BAO CAO TOM TAT

D n: No vt, gia c b knh kt hp lm ng GTNT knh tiu N22

Bo co tm tt

CHNG 1 TNG QUAN 1.1. M u 1. Ch u t : Cng ty TNHH mt thnh vin TPT thu li Sng y 2. n v iu hnh v qun l d n: Ban qun l d n u t xy dng cng trnh No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22 3. n v t vn 4. Ch nhim d n 5. Thi gian lp d n : Cng ty CP t vn v xy dng i Pht : KS Nguyn Vit Hng : T thng 11/2011 n thng 02/2012

1.2. Nhng cn c php l lp d n Cn c Lut xy dng s 16/2003/QH11 ngy 16 thng 11 nm 2003 ca Quc hi kha XI, k hp th 4; Ngh nh s 12/2009/N-CP ngy 10/02/2009 ca Chnh ph v qun l d n u t xy dng cng trnh v Ngh nh s 83/2009/N-CP ngy 15/10/2009 ca Chnh ph v sa i, b sung mt s iu Ngh nh s 12/2009/N-CP ngy 10/2/2009 ca Chnh ph v qun l d n u t xy dng cng trnh; Cn c ngh nh s 209/2004/N-CP ngy 16 thng 12 nm 2004 ca Chnh ph v qun l cht lng cng trnh xy dng; Cn c ngh nh s 49/2008/N-CP ngy 28/4/2008 ca Chnh ph v sa i, b sung mt s iu ca Ngh nh s 209/2004/N-CP v qun l cht lng cng trnh xy dng; Cn c ngh nh s 03/2008/N-CP ngy 07/01/2008 v qun l chi ph u t xy dng Cn c ngh nh s 112/2009/N-CP ngy 14 thng 12 nm 2007 ca Chnh Ph v Qun l chi ph u t xy dng cng trnh; Tiu chun ngnh 14 TCN 171 : 2006 v Thnh phn, ni dung lp Bo co u t, D n u t v Bo co kinh t k thut cc D n Thy li. Ban hnh theo quyt nh s: 3003/Q-BNN-KHCN ngy 17 thng 10 nm 2006 ca B NN&PTNT; Tiu chun ngnh 14 TCN 186 : 2006 v thnh phn, khi lng kho st a hnh trong cc giai on lp D n v thit k cng trnh Thy li. Ban hnh theo quyt nh s: 3964/Q-BNN-KHCN ngy 25 thng 12 nm 2006 ca B NN&PTNT; Tiu chun ngnh 14 TCN 195 : 2006 v thnh phn, khi lng kho st a cht trong cc giai on lp d n v thit k cng trnh Thy li. Ban hnh theo quyt nh s: 4079/Q-BNN-KHCN ngy 29 thng 12 nm 2006 ca B NN&PTNT; Tiu chun xy dng VN cc quy nh ch yu v thit k cng trnh thy li TCXDVN 285:2002.-

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-

-

Quy phm tnh ton cc c trng thy vn thit k 14TCN 10-851

Cng ty c phn t vn v xy dng i Pht


Bo co tm tt

Cng vn s 510/BNN-TL ngy 06/3/2009 v vic iu chnh tn sut ti ca cc d n kin c ho knh mng. Tiu chun thit k knh ti TCVN 4118 1985 Tiu chun thit k h s tiu cho rung la 14TCN.60-88

Cn c Quyt nh s 4890/UBND-NN ngy thng nm 2011 ca UBND Thnh ph H Ni v vic chp thun xut, iu kin b tr k hoch chun b u t d n No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22, huyn Chng M, TP H Ni. Cn c Bin bn hi ngh ngy / /2011 v vic thng nht mt s ni dung trc khi lp d n No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22, huyn Chng M, thnh ph H Ni.-

Quyt nh s Q/CTS DAN22 ca Tng Gim c Cng ty TNHH MTV TPT Thu li Sng y v vic ch nh thu gi thu: T vn kho st, lp d n u t xy dng cng trnh No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22, huyn Chng M, TP H Ni;-

Cn c vo hp ng s /2011/H-TVKSTK ngy 01 thng 11 nm 2011 gia Ban QLDA u t xy dng cng trnh No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22 v Cng ty CP t vn v xy dng i Pht v vic Kho st, lp d n gi thu: T vn kho st, lp d n u t xy dng cng trnh No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22, huyn Chng M, TP H Ni.

1.3. Gii thiu chung v d n Trm bm tiu An Vng c xy dng v a vo khai thc s dng t nmg 1997 vi 7 t my 4.000m3/h thc hin nhim v bm tiu cho 2234ha t nng nghip v t t nhin ca cc x x Thy Hng, i Yn, Lam in, Hp ng, Qung B - huyn Chng M - thnh ph H Ni. Trm bm c xy dng bn b hu sng y, thuc a bn thn An Hin, x Hong Diu, huyn Chng M, Thnh Ph H Ni v tiu ra sng y. 1.3.1. V tr a l khu vc D n. Khu vc d n thuc thn cc x D n c xy dng thuc a bn cc x Thy Hng, i Yn, Lam in, Hp ng, Qung B - huyn Chng M - thnh ph H Ni. To a l + Kinh + V Khu vc gip ranh: + Pha Bc gip th trn Chc Sn + Pha Ty gip ng tnh l 80 v Sng BiCng ty c phn t vn v xy dng i Pht

: 105o4210 : 20o5200 -:- 20o5430

2


Bo co tm tt

+ Pha ng gip Sng y + Pha Nam gip x Thng Vc 1.3.2. Tm tt nhng thng s c bn ca D n. a. a im xy dng: huyn Chng M - thnh ph H Ni. b. Hnh thc u t: Ci to, nng cp c. Mc tiu v nhim v d n: - m bo tiu nc chng ngp ng cho 1241,27ha t bao gm 1046,75ha t nng nghip, 52,88ha t ao h, 141,65ha t th c+ng x; - H tr ti bng cch tr nc trong knh bng ngun nc t knh Ty, trm bm Chi Lng II) to iu kin m bo nc ti cho din tch la v hoa mu nhm tng nng sut cy trng; - Nng cao i sng nhn dn trong vng gp phn gi vng an ninh chnh tr; - Gp phn ci thin giao thng nng thn ca khu vc; - Ci to kh hu v mi trng sinh thi. d. Cp cng trnh: Theo TCVN285-2002 y l tuyn knh tiu phc v cho 1241,27ha nn cp cng trnh l cp IV. 1.3.3. Tng hp cc ch tiu kinh t - k thut chnh ca D n. Bng 1.1. Bng tng hp cc ch tiu k thut chnh ca D n TT1 2 3 3 4 5 6

Cc thng s c bn

K hiuF P q Qk Q LkT1 Q LkT1 bk m i LkT2 Q L1 bk m i

n vha % l/s.ha m3/s m3/s m m3/s m m

Tr sIV 1241,27 10% 8,4 10,43 5765,47 390 10,43 390 4,0 1,25 0,0002 4350 1,22 162 1,4 1,25 0,0002 3

Cp cng trnh Din tch tiu Mc m bo tiu H s tiu Lu lng tiu cui knh Tng chiu di tuyn Tuyn knh T1 - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 7 Tuyn knh T2 7.1 on 1: (t Km0+00 n Km0+162) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit kCng ty c phn t vn v xy dng i Pht

m m3/s m m


Bo co tm tt

TT7.2

Cc thng s c bn

K hiuQ L2 bk m i Q L3 bk m i Q L4 bk m i Q L5 bk m i LkT3 Q L1 bk m i Q L2 bk m i

n vm3/s m m

Tr s2,17 532 1,8 1,25 0,0002 4,80 1291 2,4 1,25 0,0002 8,10 1379 3,0 1,25 0,0002 9,14 986 3,0 1,25 0,0002 1025,47 1,29 687,47 1,4 1.25 0,0002 0,63 338 1,4 1,25 0,0002 86 32 14 4

on 2: (t Km0+162 n Km0+694) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 7.3 on 3: (t Km0+694 n Km1+985) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 7.4 on 4: (t Km1+985 n Km3+364) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 7.5 on 5: (t Km3+364 n Km4+350) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 8 Tuyn knh T3 8.1 on 1: (t Km0+00 n Km0+687,47) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 8.2 on 2: (t Km0+162 n Km0+694) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k 9 Cng trnh trn knh 9.1 Cng tiu+ti - Cng trn D40 - Cng trn D60 3 Cng ty c phn t vn v xy dng i Pht

m3/s m m

m3/s m m

m3/s m m

m m3/s m m

m3/s m m

Ci Ci Ci


Bo co tm tt

TT

Cc thng s c bn- Cng trn D100 - Cng hp (sa cha:11; lm li: 31; lm mi: 2 ci)

K hiu

n vCi Ci Ci Ci

Tr s4 44 6 6 1,22 2x0,75x1,4x5 5,62 2,17 2x1,0x1,4x5 5,31 3,41 2x1,1x1,8x5 4,57 4,09 2x1,65x1,6x5 4,48 4,80 2x2,0x1,6x10 4,10 8,92 2x2,0x2,2x5 3,55 7 2 H6 3,0 v 3,5 6 v 9 4350 4.0 3.0 5

9.2 Cng iu tit trn knh - Hin trng - Lm mi 1 Cng iu tit ti K0+162 + Lu lng tiu + Khu + Cao trnh y cng 2 Cng iu tit K0+693,9 + Lu lng tiu + Khu + Cao trnh y cng 3 Cng iu tit K1+168,2 + Lu lng tiu + Khu + Cao trnh y cng 4 Cng iu tit K1+584,3 + Lu lng tiu + Khu + Cao trnh y cng 5 Cng iu tit K1+990 (cm cng N22) + Lu lng tiu + Khu + Cao trnh y cng 6 Cng iu tit K4+000 + Lu lng tiu + Khu + Cao trnh y cng 10 Cu giao thng - Hin trng - Lm li + Ti trng thit k + Chiu rng mt cu + Khu cu 11 ng giao thng - Chiu di ng - Quy m cp ng nng thn B + Chiu rng nn + Chiu rng mtCng ty c phn t vn v xy dng i Pht

Qc nxBxHxL

m3/s m m m3/s m m m3/s m m m3/s m m m3/s m m m3/s m m Ci Ci

Qc nxBxHxL

Qc nxBxHxL

Qc nxBxHxL

Qc nxBxHxL

Qc nxBxHxL

H B m

m m m

Bn Bm

m m


Bo co tm tt

TT

Cc thng s c bn+ Kt cu mt

K hiu

n v

Tr sBTCT M250 dy 20cm

Tng mc u t d n (PA1-PA kin ngh) lm trn: 55.379.951.000 ng. Trong : - Chi ph xy dng cng trnh - Chi ph thit b - Chi ph Qun l d n - Chi ph t vn TXD - Chi ph khc - Chi ph n b GPMB - D phng Tng mc u t d 62.675.708.000 ng Trong : - Chi ph xy dng cng trnh - Chi ph thit b - Chi ph Qun l d n - Chi ph t vn TXD - Chi ph khc - Chi ph n b GPMB - D phng: : : : : : :

n

(PA2-PA

41.173.393.888 2.670.000.000 826.447.975 4.016.992.738 755.165.401 903.410.000 5.034.541.000 s.snh) lm trn:

: : : : : : :

47.250.403.004 2.670.000.000 912.045.763 4.402.202.247 839.855.676 903.410.000 5.697.791.669


6


Bo co tm tt

CHNG 2 IU KIN T NHIN V S CN THIT PHI U T 2.1. iu kin a hnh a hnh khu tiu: y l vng chuyn la, nn c a hnh tng i bng phng nhiu ao h. Xu th a hnh khu vc tiu ca h thng tiu trm bm An Vng c xu hng dc t Bc xung Nam, t 2 pha ng-Ty v hng ra Sng y, to thnh a hnh lng mng, cao a hnh tuyn knh N22 (tuyn T2) thay i t +6,80 n +4,5m, tuyn knh N22 (tuyn T3) thay i t +5,50 n +4,50, tuyn knh chnh trm bm An Vng (tuyn T1) c cao trung bnh +4,70. Cc tuyn knh tiu: Tuyn knh tiu N22 (tuyn T2) c chiu di 4350m c cao y t + 6,12m n +4,43m, thp hn cao khu vc hai bn t +0,7m n 0,5m, cao b tng i cao. Tuyn knh N22 (tuyn T3) c chiu di 1025m c cao y knh trung bnh +3,7m, thp hn cao khu vc hai bn trung bnh +0,5m, cao b knh tng i thp. Tuyn knh chnh trm bm An Vng c cao y knh trung bnh +3,7m, b hai bn tng i cao. 2.2. iu kin a t v a cht thu vn 2.2.1. iu kin a cht cng trnh Theo ti liu khoan kho st hin trng, kt hp vi ti liu th nghim trong phng v ti liu kho st a cht cng trnh, dc tuyn knh kho st a tng phn b t trn xung di gm cc lp nh sau: - Lp 1: St pha mu xm nu, xm vng, kt dnh cht, trng thi do cng. Ngun gc nhn to v t nhin do qu trnh o, p knh to nn. B dy trung binh 1,0 m, gp ti phn p b knh. - Lp 2: St pha mu xam nu ln hu c, kt dnh cht trng thi do mm n deo chay. y l lp co ngun gc bi tch. B dy khng u, thay i t 0,5-2,0 m. Lp ny gp lin tc trn tuyn. - Lp 3: St mu xam xanh, xam ghi, kt dnh cht trng thi do mm. y l sn phm ca bi tch c din phn b rng trong ton vng. B dy thay i nhiu t 0,5 - >5,0m. Lp ny gp nhiu trn tuyn. - Lp 4: St pha mu xm nu, xam en, ln mun hu c trng thi do mm n deo chay, ngun gc bi tch sng c b dy nhiu ch cha khng ch ht. nh gi chung: Nhn chung c im a cht cng trnh trn ton tuyn knh tng i ng u. c im chung l cc lp trn mt c trng thi cng hn v cng xung su th cng mm hn. Hu ht cc lp trn tuyn gp trong cc h khoan u c thnh phn l st v st pha, cha c h khoan no gp ct hay ct pha. V vy trong qu trnh thit k i vi cc cng trnh c ti trng ln cn ch n a tng t mng hoc chiu su mng cc cho ph hp. 2.2.2. iu kin a cht thu vn - Nc mt: Ngun nc mt ch yu trong khu vc c cung cp bi nc ma. Nc ma c lu gi trong cc ao h, ch yu l cc ao h t nhin v nhn to.Cng ty c phn t vn v xy dng i Pht

7


Bo co tm tt

- Nc ngm: L vng ng bng nn mc nc ngm nng v kh di do, hu ht cc ging khi su trn 5m u c nc, nhiu ging c nc su 3m. 2.3. iu kin kh tng thy vn 2.3.1. c im kh tng Nm vng ng bng Bc b nn vng nghin cu mang cc c trng in hnh ca kh hu ng bng Bc b, l kiu kh hu nhit i gi ma, c ma ng lnh, cui ma m t v nhiu ma phn, ma h nng v c nhiu ma. - Nhit : nhit trung bnh trong nm khong 23,7oC, trong cao nht ln ti trn 37,50C v thp nht l 16,90C. - m: m tng i trung bnh nhiu nm t 85.4%, m cao nht thng 4: 89,3%, thp nht 82,3%. - S gi nng: trong nm trung bnh l 1700 gi, nm cao nht l 1700 gi, nm thp nht 1460 gi. - Lng bc hi: Lng bc hi hng nm nm ca vng d n li kh ln, bnh qun t 856mm. - Lng ma: Ti vng d n c 2 trm o ma l trm Ba Th v trm H ng, hai trm o ma ny u c lit ti liu ma t 1960 n 2010 v ti liu ma t nm 1985 n 2010, tin cy lm ti liu nghin cu v tnh ton cc ch tiu thit k . Lng ma bnh qun nhiu nm l 1798,08mm. - Gi: Tc gi trung bnh vng ny khng ln, bnh qun khong 1.6 1.8m/s, Hng gi thnh hnh vo ma H l ng Nam cn ma ng l ng Bc. 2.3.2. c im thu vn Sng Tch, sng Bi, sng y l nhng con sng nh hng n vic ti, tiu v phng chng l ca lu vc t Bi hu y. - c im dng chy ma l ca sng y: Sng y c chiu di 241km, on chy qua a phn huyn Chng M t Phng Cu n Ba Th di 32km. Lng sng y hp v nng, bi sng rng. Trong trng hp khng c phn l mc nc sng y ty thuc vo lng nc do ma ca lu vc, thc cht (nu khng phn l) v ma ma on sng y t thng ngun (x Ht Mn Phc Th) n Ba Th ch nh mt tuyn knh tiu t nhin ln nhn nc ni ng m ca tiu l ng ba Ba Th. - c im dng chy ma kit ca sng y: Mun dng chy trung bnh nhiu nm ca sng y t thng 1 n thng 3 (l thi im kit nht trong nm) ti Ba Th khong 7l/s/km2, ngy kit nht ch t 1.031l/s/km2. 2.4. Ti nguyn thin nhin 2.4.1. Ti nguyn t v th nhng. Tng din tch t t nhin ca cc x thuc d n l 3734,31ha trong t nng nghip 2654,82ha. Theo o c t bn din tch t ca cc a phng nm trong lu vc tiu ca d n l 1241,27ha, c tng hp trong bng sau:


8


Bo co tm tt

Bng: Thng k din tch cc loi t thuc lu vc tiu ca d n theo khu vcTT 1 2 3 4 5 6 Khu vc Thy Hng + TT Chc Sn i Yn Lam in Hp ng Qung B Hong Diu Tng t nng nghip 182,44 151,98 226,39 182,84 157,47 145,63 1.046,75 Ao, thuy san 15,85 6,92 4,49 10,80 14,04 0,78 52,88 Th c ng xa 31,01 16,04 22,62 15,58 55,77 0,63 141,65 Tng 229,30 174,94 253,50 209,22 227,27 147,04 1.241,27

y l vng c thm canh la nc kh cao. Hu nh ton b t canh tc vng d n hng v u c bn phn hu c, phn ho hc v t nhiu u c s dng thuc tr su. Kt qu kho st ngoi thc a v iu tra tnh hnh sn sut nng nghip cho thy cy trng vng ny cho n nay cha c biu hin g ca s nhim c do bn qu nhiu phn ho hc thuc tr su hoc do mi trng t b nhim. 2.4.2. Phng hng quy hoch v pht trin ti nguyn thin nhin vng d n Theo Quy hoch chuyn i c cu sn xut nng nghip n nm 2010 v tm nhn 2020 huyn Chng M, din tch t nng nghip thuc vng d n l vng t ph sa tng i mu m, thch hp vi nhiu loi cy trng c gi tr kinh t cao, trong tng lai tp trung thm canh tng nng sut cy trng, ch trng vo pht trin cy la, cy u tng v ng,...a nng sut cy trng ln cao nhm n nh lng thc. Bn cnh , phi chuyn i mt s din tch t nng nghip sang cc mc ch phi nng nghip nh t , t pht trin v lng ngh, t cho cc mc ch chuyn dng. 2.5. Hin trng cng trnh khu vc d n Ton b lu vc tiu ca khu vc d n hin ti c 1 trm bm An Vng. Hin nay ton b s trm bm ny v c bn p ng tt nhim v tiu cho khu vc ph trch, tuy nhin h thng knh mng cha p ng c vi quy m ca trm bm, dn n nh hng ti hiu qu phc v tiu. 2.5.1. Hin trng khu u mi trm bm An Vng Trm bm c xy dng t nm 1997 vi 7 t my trc ng 24 HT-90 cng sut 4000m3/h, qua nhiu nm hot ng v cng c tu sa nhiu nhng cng sut ca trm bm theo nh gi s b ch t khong 85%, hin ti kt cu nh my vn m bo trm bm hot ng bnh thng. 2.5.2. Hin trng h thng tuyn knh tiu v cng trnh trn knh * Tuyn knh: Tuyn knh chnh trm bm An Vng (tuyn T1) c tng chiu di 1862m, on t trm bm n cu qua knh L=1472m c d n v ang thi cng, on cn li c chiu di 390m thuc phm vi nghin cu d n, don knh ny mt ct rng, y knh b bi lng t 0,5-:-1,0m, b phi c ng b tng v mi knh kin cCng ty c phn t vn v xy dng i Pht

9


Bo co tm tt

tng xy, b tri l b t, b st l nghim trng l nguyn nhn gy bi lng lng knh, nh hng vic ti nc t lu vc pha trn v trm bm. Tuyn knh N22 (tuyn T2&T3): Hu ht hai bn tuyn knh l rung, mt s on c cc trang tri chn nui gia cm, cc vn cy n qu v cc ao nui c. Tnh trng ch tc dng chy khin cho tuyn knh nc khng lu thng, ph dng, bo rc v cc sinh vt ph du pht trin gy nhim, i mu v bc mi hi thi. Mi knh c di v cy ci mc um tm, mt s on b st xung lng knh, mt ct knh bin dng, theo chiu ngang c on b st l rt rng, nhng rt nng ch khong 1,0m do hin tng bi lp, in hnh nh on u tuyn c chiu di khong 1,3km, on gia b knh dc ng, y l on c dn c sinh sng pha bn phi c chiu di khong 700m, on cui c di mc um tm hai bn b knh, hin tng bo rc lp y c lng knh, nhn qua khng phn bit c y l knh hay lm cy. Tuyn knh T2 ngoi nhim v tiu l chnh, th v ma kh cn c nhim v tr nc ti cho din tch t hai bn, v vy vic bi lng lng knh, b knh st l khng nhng nh hng n vn tiu nc m cn nh hng n vic tr nc phc v sn xut. B knh dc hai bn knh l b t, ngi dn kt hp lm ng giao thng, do mt ng hp khong t 2,0-:-2,5m, g g, mt s on st b knh c nguy c st l. V ma ma l do ng dc b knh nh, g gh, trn trt nn cng tc qun l vn hnh cng trnh m bo vn thng tc dng chy, chng ngp ng gp rt nhiu kh khn. Mt s hnh nh hin trng tuyn knh

H1&2-Lng knh bi lng, b knh st l gy ch tc dng chy


10


Bo co tm tt

H3&4-Lng knh bi lng, cy ci, c di mc hai bn b c nguy c lm st l b knh * Cng trnh trn knh: Trn tuyn c tng cng 114 cng trnh, trong trn tuyn knh T2 c s lng 105 ci, mt cc cng trnh trn tuyn nhiu, tuy nhin hu ht cc cng trnh ny xung cp. Gm 6 cng iu tit xung cp hoc quy m nh; 7 cu giao thng, 2 ci xung cp; cng ti+tiu 101 ci xung cp. Mt s hnh nh hin trng cng trnh trn tuyn

H5&6-Cng iu tit xung cp

H7&8-Cng iu tit xung cp, khng cn ca vanCng ty c phn t vn v xy dng i Pht

11


Bo co tm tt

* Nhn xt chung v hin trng d n: - V tuyn knh: Tuyn knh b st l, bi lng, b knh nh hp, giao thng qun l rt kh khn. Cn phi c gii php no vt m bo mt ct knh thit k, gia c b knh chng ln chim, to thun li cho cng tc qun l vn hnh v ci thin iu kin giao thng trong khu vc. - V cc cng trnh trn knh: + Cng iu tit: Cn xy dng li m bo khng cn tr n tiu thot nc, ng thi dng mc nc h tr ti. + Cu giao thng: Mt s cu h hng, xung cp cn c nng cp m bo cho cng tc qun l vn hnh cng nh m bo giao thng i li ca nhn dn. + Cng tiu+ti: b h hng cn nng cp ci to v m rng theo qui m tiu mi. + Mt s v tr cha c cng cn b sung m bo tiu nc v ma ma. - V tnh trng ngp ng: Do b hn ch nng lc ca trm bm, tuyn knh b st l, bi lng, khu cc cng trnh trn knh v cao trnh y knh tiu chnh khng m bo do vy m hng nm trong lu vc tiu thng xuyn b ng ngp vi nhng trn ma va. Cn no vt, gia c mi, b knh mt ct thit k, chng st l, gim bi lng m bo tiu thot nc, chng ngp ng, to thun li cho cng tc qun l vn hnh cng nh ci thin iu kin giao thng trong khu vc c bit v ma ma. 2.6. S cn thit phi u t Qua nh gi hin trng d n, ch ng trong cng tc tiu ng v m bo trm bm hot ng t hiu qu cao th vic u t no vt, ci to, nng cp tuyn knh tiu trm bm An Vng nhm hn ch ti a cc tn ti ang c v m bo tiu trit cho ton b din tch lu vc vo ma ma l, ng thi h tr ti cho mt phn din tch t sn xut nng nghip ca khu vc, t ci thin i sng nhn dn trong vng d n p ng c cc yu cu canh tc v sn xut ca nhn dn, to iu kin cho nn kinh t ca cc x trong khu vc d n ni ring v huyn Chng M ni chung tng bc pht trin l vic rt cn thit v cp bch, l thc hin ng ch trng, ng li, chnh sch ca ng, Nh nc cng nh lnh o thnh ph H Ni v p ng lng mong mi ca nhn dn trong khu vc d n.


12


Bo co tm tt

CHNG 3 MC TIU, NHIM V V QUY M D N 3.1. Mc tiu ca d n - m bo tiu ch ng cho phn din tch thuc d n ca trm bm An Vng, chng ngp ng, gim thiu n mc thp nht nhng ri ro thin tai do ngp lt gy ra; - H tr ti (1 phn) bng cch tr nc trong knh t ngun nc knh Ty ca trm bm Chi Lng II, to iu kin m bo nc ti cho din tch la v hoa mu nhm tng nng sut cy trng; - Nng cao i sng kinh t v ci thin c s h tng giao thng ca nhn dn trong khu vc d n, tng nng sut cc loi cy v gi tr sn phm bnh qun trn 1ha t 62 triu ng n 69 triu ng; - Gp phn ci thin giao thng nng thn ca khu vc; - Ci to kh hu v mi trng sinh thi, to cnh quan trong khu vc d n. 3.2. Nhim v ca d n Trn c s mc tiu ca d n ra d n cn m bo cc nhim v c th nh sau: - No vt, gia c tuyn knh tiu N22 vi chiu di 5765,47m v cc cng trnh trn knh m bo tiu nc cho din tch lu vc l 1241,27ha; - Nng cp, gia c b knh kt hp lm ng giao thng bn b hu tuyn knh vi chiu di 4350m, to iu kin thun li cho qu trnh qun l vn hnh h thng, ng thi pht trin giao thng nng thn; - To hnh lang bo v cng trnh, chng ln chim. 3.3. Quy m d n - Cp cng trnh: Cng trnh cp IV - Din tch tiu ca d n: 1241,27ha - H s tiu thit k: qtiu= 8,4 l/s/ha. - Lu lng tiu: 10,43l/s.ha - Tng chiu di tuyn: 5765,47mS h thng tiu An VngKhu tiuTuyn T2 L=4350m

Khu tiuTuyn T3 L=1025,47m

on 1 L=162m

on 2 L=532m

on 3 L=1291m

on 4 L=1379m

on 5 L=986mTuyn T1 L=390m Tuyn knh ang thi cng L=1472m

on 1 L=687,47m

on 2 L=338m

Khu tiu

Khu tiu

Tuyn hu S.y

TB An Vng 7*4000m3/h


13


Bo co tm tt

Quy m c th nh sau: 3.3.1. Tuyn knh:TT on knh Tuyn T1 1 1 2 3 4 5 on 1 Tuyn T2 on 1 on 2 on 3 on 4 on 5 Tuyn T3 on 1 on 2 Tng cng Km0+00-:-Km0+390 Km0+00-:-Km0+162 Km0+162-:-Km0+694 Km0+694-:-Km1+985 Km1+985-:-Km3+364 Km3+364-:-Km4+350 Km0+00-:Km0+687,47 Km0+687,47-:Km1+025,47 L trnh Chiu di L (m) 390,00 390,00 4350,00 162,00 532,00 1291,00 1379,00 986,00 1025,47 687,47 338,00 5765,47 1241,27 145,00 258,00 572,00 964,00 1087,77 8,4 8,4 8,4 8,4 8,4 8,4 10,43 1,22 2,17 4,80 8,10 9,14 Cm cng N22 Din tch (ha) H s tiu q (l/s.ha) Lu lng tiu Q (m3) Ghi ch

1 2

153,50 75,00 1241,27

8,4 8,4

1,29 0,63

3.3.2. Cng trnh trn knh: Tng cng 114 ci - Ci to, nng cp 6 cng iu tit trn tuyn (trong c 1 cm cng knh N22). - Ci to, nng cp 2 cu giao thng trn tuyn. - Ci to, b sung: 44 cng hp, 57 cng trn. - Lm mi 2 cng hp, 7 cng trn. 3.3.3. ng giao thng - ng giao thng nng thn loi B - Chiu di L = 4350m - Chiu rng mt ng Bm=3m, l Bl=0,5m, nn Bn=4,0m - Kt cu mt: BTCT M250 dy 25cm.


14


Bo co tm tt

CHNG 4 PHN TCH LA CHN CC GII PHP K THUT 4.1. Phn tch la chn phng n cng trnh. 4.1.1. Phn tch la chn phng n mt ct knh Phng n mt ct knh c t ra trong khi nghin cu, chng ti d kin 2 phng n mt ct knh: + Knh c mt ct ch nht + Knh c mt ct hnh thang Vi hai phng n mt ct knh c xut nghin cu thy rng: + Phng n knh c mt ct ch nht c u im l din tch chim t, gim chi ph n b nhng khi lng xy lt ln gi thnh xy dng cao. + Phng n mt ct knh hnh thang c u im l li v thy lc, c tnh thm m, khi lng xy lt nh nhc im l din tch chim t ln. Tuy nhin sau khi tnh ton thy rng mt ct knh thc t ln hn nhiu so vi mt ct thit k v vy m khng nh hng n vic chim t ca knh, nn khng phi tn chi ph gii phng n b. V vy phng n mt ct knh hnh thang c la chn lm phng n thit k cho tuyn knh. 4.1.2. Phn tch la chn phng n kt cu gia c knh a) Gii php kt cu knh - Tuyn knh T1 chn kt cu ng b vi tuyn knh trm bm An vng thc hin, y ch yu phn tch v la chn kt cu tuyn knh T2, T3. - Trn c s mt ct knh c la chn l mt ct knh hnh thang, xut 2 gii php kt cu knh: *) xut phng n: + Phng n 1: Gia c mi knh bng xy M100. + Phng n 2: Gia c mi knh knh bng lt khan trong khung BTCT M200 Tin hnh tnh ton khi lng v chi ph xy lp ca 2 phng n nh sau: + Phng n 1: 55.379.951.000 ng + Phng n 2: 62.675.708.000 ng *) Phn tch nh gi u nhc im ca tng phng n: - Phng n 1: Phng n ny c din tch n b t nh phng n 2. Tuy nhin phng n ny thi cng nhanh do cng tc xy n gin, rt ngn thi gian thi cng, gim c h s nhm mi knh, tng kh nng tiu thot nc. Phng n ny c chi ph u t thp hn phng n 2. - Phng n 2: Phng n ny c din tch n b t nh phng n 1, kt cu khung b tng ct thp vng chc, tuy nhin do thi cng kt cu BTCT trc tip trn mi nghing do vy thi gian thi cng s ko di, mt khc nu cng tc lt khng m bo k thut v lu di d sinh ra cc l hng trn mi v t trong miCng ty c phn t vn v xy dng i Pht

15


Bo co tm tt

knh s b xi do nh hng n n nh mi knh. Hn na phng n ny c chi ph u t ln hn phng n 1. T nhng phn tch nh gi trn kin ngh la chn Phng n 1: Gia c mi knh bng kt cu xy M100 lm phng n chn. 4.2. Thng s k thut cc hng mc cng trnh. 4.2.1. Tuyn knh - Cn c vo iu kin a hnh, a cht tuyn knh ; - Cn c vo iu kin chu tc ng ca ma l ; - Cn c vo kt qu tnh ton la chn Bk v htk ; - Cn c vo lu lng thit k, mc nc yu cu, tnh ton kch thc mt ct knh theo bi ton li nht v thy lc. S dng phn mm tnh ton thy lc cng trnh EHIDPro-V4.0 ca trng i hc thy li lp tnh ton, kt qu tnh ton cc ch tiu thit k cho bng sau : Bng: Cc thng s thit k knhTuy n on knh o n T n Ch tiu Max T1 1 Km0+0 0 Km0+3 90 TK Min Max 1 Km0+0 0 Km0+1 62 TK Min Max 2 Km0+1 62 Km0+6 94 TK Min Max T2 3 Km0+6 94 Km1+9 85 TK Min Max 4 Km1+9 85 Km3+3 64 TK Min Max 5 Km3+3 64 Km0+0 0 Km4+3 50 Km0+687 ,47 TK Min T3 6 Max Q (m3/ s) 12,5 2 10,4 3 4,17 1,46 1,22 0,49 2,60 2,17 0,87 5,77 4,80 1,92 9,72 8,10 3,24 10,9 6 9,14 3,65 1,55 0,0 2 2 1,2 5 1,4 0 0,0 2 2 1,2 5 3,0 0 0,0 2 2 1,2 5 3,0 0 0,0 2 2 1,2 5 2,4 0 0,0 2 2 1,2 5 1,8 0 0,0 2 2 1,2 5 1,4 0 n i (104 ) m Bk (m) htk (m) 2,5 1 2,3 0 1,4 2 1,0 6 1,0 0 0,6 0 1,3 0 1,2 0 0,7 4 1,7 6 1,6 5 0,9 9 2,1 2 1,9 5 1,2 0 2,2 5 2,1 0 1,2 8 1,0 9 V (m/ s) 0,7 6 0,5 7 0,5 1 0,3 8 0,5 8 0,4 3 0,7 1 0,5 3 0,8 1 [V] 0,9 7 2,6 0 0,3 0 0,7 8 1,3 0 0,3 0 0,8 3 1,5 0 0,3 0 0,8 9 1,9 5 0,3 0 0,9 4 2,2 5 0,6 0,8 4 0,6 2 0,5 1 0,3 0 0,9 5 2,4 0 0,3 0 0,7 8 Hk (m)

0,0 2

2

0;1, 5

4,0 0


16

D n: No vt, gia c b knh kt hp lm ng GTNT knh tiu N22TK Min Max 7 Km0+687 ,47 Km1+25, 47 TK Min 1,29 0,52 0,76 0,63 0,25 0,0 2 2 1,2 5 1,4 0 1,0 0 0,6 2 0,7 6 0,7 0 0,4 2

Bo co tm tt1,3 0 0,3 8 0,4 3 0,3 0 0,7 3 1,0 0,3 2 0,3 0

4.2.2. Cng trnh trn knh a. Cng tiu, cng tiu+ti nc: Bng: Thng k v tr qui m cc cng tiu+ti trn knhSTT 1 2 Loi cng trnh Cng hp Cng trn D40 D60 D100 Tng cng: Tng cng 44 57 Sa cha 11 Lm li 31 50 32 14 4 81 B sung 2 7 7 Ghi ch

101

11

9

b. Cng iu tit trn knh: Bng: Thng k v tr qui m cc cng iu tit trn knhST T 1 2 3 4 5 6 L trnh K0+162 nh gi hin trng xung cp Kch thc hin trng B(m) H(m) 2,00 2,20 2,00 2,20 2,20 1,40 1,60 1,40 1,60 1,60 Kt qu kim tra Khng m bo Khng m bo Khng m bo Khng m bo Khng m bo Khng m bo Hnh thc ci to Cng hp Cng hp Cng hp Cng hp Cng hp Cng hp Kch thc thit k n*B(m) 2*0,75 2*1,0 2*1,1 2*1,65 2*2,0 2*2,0 H(m) 1,4 1,4 1,8 1,6 1,6 2,2 L(m) 5,0 10,0 5,0 5,0 10,0 5,0

K0+693,9 khng c ca van K1+168,2 xung cp K1+584,3 xung cp K1+990 K4+0 Ca van hng 2 ca, hng

c. Cu giao thng Bng: V tr qui m cc Cu giao thng trn tuynTT1 2 3 4 5 5 5

V tr cuK0+488,6 K0+905 K2+280 K2+450 K2+650,1 K3+364 K4+363,6

nh gi hin trngCn tt xung cp xung cp Cn tt Cn tt Cn tt Cn tt

Kch thc hin trngB (m) 4,40 3,00 3,10 3,00 3,10 7,00 4,40 L (m) 5,60 4,00 8,40 9,50 8,80 8,00 5,60

Kch thc Lm miB (m) L (m) Gi nguyn 3,00 6,00 3,50 9,00 Gi nguyn


17


Bo co tm tt

d. ng giao thng ng giao thng c xy dng dc b knh phc v vic pht trin giao thng trong vng v phc v cho cng tc qun l vn hnh tuyn knh. ng giao thng c xy dng vi qui m ng nng thn B. ng giao thng c lm t u n cui tuyn T2, bn b phi, vi chiu rng mt 3m, l mi bn rng 0,5m, kt cu BT M250. Ti cc v tr giao vi ng hin trng c ni vut m bo m quan v giao thng thun tin, an ton. Bng: Tng hp cc thng s k thut c bn ca d n TT1 2 3 3 4 5 6

Cc thng s c bnCp cng trnh Din tch tiu Mc m bo tiu H s tiu Lu lng tiu cui knh Tng chiu di tuyn Tuyn knh T1 - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k Tuyn knh T2 on 1: (t Km0+00 n Km0+162) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k on 2: (t Km0+162 n Km0+694) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k on 3: (t Km0+694 n Km1+985) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k on 4: (t Km1+985 n Km3+364)

K hiuF P q Qk Q LkT1 Q LkT1 bk m i LkT2 Q L1 bk m i Q L2 bk m i Q L3 bk m i

n vha % l/s.ha m3/s m3/s m m3/s m m

Tr sIV 1241,27 10% 8,4 10,43 5765,47 390 10,43 390 4,0 1,25 0,0002 4350 1,22 162 1,4 1,25 0,0002 2,17 532 1,8 1,25 0,0002 4,80 1291 2,4 1,25 0,0002 18

7 7.1

m m3/s m m

7.2

m3/s m m

7.3

m3/s m m

7.4



Bo co tm tt

TT

Cc thng s c bn- Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k on 5: (t Km3+364 n Km4+350) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k Tuyn knh T3 on 1: (t Km0+00 n Km0+687,47) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k on 2: (t Km0+162 n Km0+694) - Lu lng thit k - Chiu di knh - Chiu rng y knh - H s mi knh - dc thit k Cng trnh trn knh Cng tiu+ti - Cng trn D40 - Cng trn D60 3 Cng trn D100 - Cng hp (sa cha:11; lm li: 31; lm mi: 2ci)

K hiuQ L4 bk m i Q L5 bk m i LkT3 Q L1 bk m i Q L2 bk m i

n vm3/s m m

Tr s8,10 1379 3,0 1,25 0,0002 9,14 986 3,0 1,25 0,0002 1025,47 1,29 687,47 1,4 1,25 0,0002 0,63 338 1,6 1,25 0,0002 86 32 14 4 44 6 6 1,22 2x0,75x1,4x5 5,62 2,17 2x1,0x1,4x10 5,31 19

7.5

m3/s m m

8 8.1

m m3/s m m

8.2

m3/s m m

9 9.1

Ci Ci Ci Ci Ci Ci Ci Qc nxBxHxL m3/s m m m3/s m m

9.2 Cng iu tit trn knh - Hin trng - Lm mi 1 Cng iu tit ti K0+162 + Lu lng tiu + Khu + Cao trnh y cng 2 Cng iu tit K0+693,9 + Lu lng tiu + Khu + Cao trnh y cngCng ty c phn t vn v xy dng i Pht

Qc nxBxHxL


Bo co tm tt

TT3

Cc thng s c bnCng iu tit K1+168,2 + Lu lng tiu + Khu + Cao trnh y cng Cng iu tit K1+584,3 + Lu lng tiu + Khu + Cao trnh y cng Cng iu tit K1+990 (cm cng N22) + Lu lng tiu + Khu + Cao trnh y cng Cng iu tit K4+000 + Lu lng tiu + Khu + Cao trnh y cng Cu giao thng - Hin trng - Lm li + Ti trng thit k + Chiu rng mt cu + Khu cu ng giao thng - Chiu di ng - Quy m cp ng nng thn B + Chiu rng nn + Chiu rng mt

K hiuQc nxBxHxL

n vm3/s m m m3/s m m m3/s m m m3/s m m Ci Ci

Tr s3,41 2x1,1x1,8x5 4,57 4,09 2x1,65x1,6x5 4,48 4,80 2x2,0x1,6x10 4,10 8,92 2x2,0x2,2x5 3,55 7 2 H6 3,0 v 3,5 6,0 v 9,0 4350 4,0 3,0

4

Qc nxBxHxL

5

Qc nxBxHxL

6

Qc nxBxHxL

10

H B m

m m m

11

Bn Bm

m m

4.3. Bin php thi cng xy dng 4.3.1. Cng tc t. * o t: khi lng o t cng trnh l khng ln, t o ch yu l bc lp hu c knh v o h mng cng trnh trn knh bin php ch yu dng my o t 0,8 m3 n 1,25m3 o thi ra hai bn b knh pha ngoi v kt hp t o chuyn t ra cc bi thi. Dng bin php th cng o ti nhng v tr khng th dng my o v kch thc h mng qu nh. * p t: gm p knh v p hon tr li cng trnh trn knh. Khi lng t p mt phn tn dng t o mng, mt phn mua ti m t gn nht. Bin php dng t hp t, my i, my m 9T v m cc p knh. Cng trnh trn knh dng my m cc v m th cng thi cng p t hon tr h mng. * No vt knh:Cng ty c phn t vn v xy dng i Pht

20


Bo co tm tt

Tuyn knh chnh thi cng c gii kt hp th cng, tuyn knh nhnh thi cng bng bin php th cng l chnh. t o c vn thi ln b knh. 4.3.2. Cng tc xy lt. Cng tc xy lt tuyn: chn khay, mi knh u l kt cu xy nn vic thi cng ch yu l th cng. Cng trnh trn knh c xy c bng bin php th cng Cc BTCT v cc tre c ng bng ba ng cc tun th ng quy trnh quy phm. 4.3.3. Lp t thit b. Phng n lp t thit b ca van van bng bin php th cng, vn hnh, chy th v bn giao u phi tun th theo quy trnh quy phm v hng dn ca nh cung cp thit b. 4.4. T chc xy dng Trong qu trnh thi cng vn phi m bo cho tuyn knh tiu phc v tr nc h tr ti cho din tch t canh tc v vy cn phi tnh ton, phn on thi cng khng nh hng n vic tr nc ti. ng thi tp trung thi cng y nhanh tin hon thin c bn cng tc no vt, gia c mi knh trong ma kh ma ma c th tin hnh bm tiu. Thi cng knh theo nguyn tc chia on, i vi cng tc no vt c th thi cng ton tuyn. D kin thi gian bt u thi cng t nm 2013 n 2014. Bng: Dn dng v trnh t thi cng Thi gian Nm Ma Bin php dn dng Trnh t thi cng

Kh 2013

Ma

Kh 2014 Ma

- No vt lng knh - Thi cng o chn khay knh, gia cc chn, bt mi v thi cng chn Chia on, p quy dc knh v khay, mi knh. dn dng bng lng knh - Thi cng cm cng N22 v cc cng tiu trn knh - Thi cng cng iu tit Thi cng cc cng trnh trn knh (ch Dn dng bng knh yu l cc cng ti+cp vo knh) - Thi cng o chn khay knh, gia cc chn, bt mi v thi cng chn Chia on, p quy dc knh v khay, mi knh. dn dng bng lng knh - Thi cng cu giao thng v cc cng tiu trn knh - Thi cng cng iu tit Thi cng hon thin ton b tuyn Dn dng bng knh knh


21


Bo co tm tt

CHNG 5 NHU CU DIN TCH T XY DNG, PHNG N N B GPMB 5.1. Nhu cu din tch t 5.1.1. t s dng lu di Tng nhu cu din tch t ca cng trnh l 9,16ha. Phm vi gia c mi hu nh nm trong phm vi cng trnh c, ch mt phn nh do iu kin m bo v k thut nn cn phi thu hi mt s v tr v ton b l t sn xut nng nghip, sau khi c kch thc mt ct tng v tr chng ti thng k tnh ton c din tch t cn phi thu hi vnh vin xy dng cng trnh l 5120,36m2. 5.1.2. t s dng tm thi trong thi gian xy dng t s dng tm thi ca d n ch yu l kho bi ln tri phc v thi cng. D n c khi lng cng tc xy lp trung bnh do trong qu trnh thi cng phi kt hp vn giao thng cht ch khng lm nh hng n giao thng cng cng ca khu vc v din tch t trng dng tm thi lm khu iu hnh, kho bi cha vt liu thi cng l 2500m2. 5.2. Tn tht do xy dng d n 5.2.1. Tng s dn b nh hng v s dn phi di di Trong xy dng d n khng c tn tht s dn b nh hng phi di di, y l iu kin rt thun li trong c qu trnh thc hin xy dng d n. 5.2.2. Cc tn tht v rung t, nh ca, cc cng trnh, c s h tng v.v V c bn mt ct knh thit k mi nm trong phm vi ranh gii mt ct c, mt s phm vi iu chnh cc b m bo v mt k thut nn s phi thu hi khong 5120,36m2 xy dng cng trnh, cn trong phm vi cng trnh khng nh hng n nh ca, cc tuyn ng sn xut ct qua knh s c hon tr sau khi thi cng, cc cng trnh khc trong phm vi xy dng khng c. 5.2.3. Cc nh hng i vi cc danh lam, thng cnh, di tch vn ho D n khng gy nh hng n cc danh lam, thng cnh ca khu vc 5.2.4. Khung chnh sch n b, gii phng mt bng, di dn v ti nh c Trong qu trnh xy dng d n nu c vn pht sinh phi n b th Ch u t phi hp vi chnh quyn a phng khu vc c d n i qua ln k hoch nCng ty c phn t vn v xy dng i Pht

22


Bo co tm tt

b v gii phng mt bng theo ng chnh sch ca nh nc v a phng, khng gy tn tht cho i tng c n b. 5.2.5. Phng n n b, gii phng mt bng, di dn v ti nh c Phng n n b c xy dng ngay sau khi d n c ph duyt v i vo giai on thit k BVTC - DT s c ln phng n tnh ton chi tit c th. 5.2.6. Vn phng chng chy n, an ninh quc phng, Vn phng chng chy n, an ninh quc phng c t ln hnh u, trnh tn tht khng ng c trong qu trnh thc hin xy dng d n. Cc cp c thm quyn phi phi hp ln k hoch c th nhm m bo thc hin tt nhim v ny. CHNG 6 NH GI TC NG MI TRNG 6.1. Hin trng mi trng sinh thi vng D n. Knh tiu N22 trm Bm An Vng l knh t c chiu di 5,7km, knh b st l mnh, mt ct knh b bin dng nhiu so vi thit k. dc knh b bin i, nhiu ch b dc ngc. B knh nhiu ch b st l, nt n v thp, khng m bo tiu thot nc theo yu cu. S bi lng v c mc lm thu hp mt ct v tng h s nhm xy ra trn ton tuyn. Do rc thi, hm lng cht hu c trong nc cao, nc trong knh b ng v nh hng ln n mi trng xung quanh khu vc, m bo ly nc th thng phi vt rc trn knh bng th cng gim nh hng ca rc thi v mi trng cng nh tng kh nng tiu tha nc ca knh 6.2. Tc ng mi trng trong thi gian xy dng. No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22 khng i qua khu vc dn c nn trong thi gian xy dng d n khng gy nh hng ln n mi trng xung quanh, dn c xung quanh. 6.3. Tc ng mi trng sau khi thc hin d n. Sau khi thc hin xy dng d n mt mt l nhm m bo vn tiu thot nc, mt khc m bo tr mt phn nc cung cp nc ti cho sn xut. Do vy tuyn knh N22 sau khi c no vt, gia c mi, b kt hp lm ng giao thng dc tuyn s to ra c mi trng cnh quan hai bn b knh c bit l ti nhng khu vc trc y thng xuyn tp trung nhiu rc thi s khng cn b ng gy nhim, thc y v to iu kin thun li cho nhn dn khu vc d n trong sn xut v sinh hot.v.v.. Gim bt vic tu b no vt cc tuyn knh hng nm. 6.4. D kin k hoch v chi ph gim st mi trng. Trong qu trnh xy dng d n phi c bin php tiu ng c th, vt rc thi ngay t u thng lu v khong gia knh tiu trnh tnh trng rc thi ng gy tc hi xu n mi trng xung quanh. C d kin kinh ph c th trong thi gian xy dng d n v nhn cng vt rc, kinh ph vn chuyn, x l rc thi sau vt kinh ph chng ng ngp v hn hn do cha xy dng xong d n.Cng ty c phn t vn v xy dng i Pht

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CHNG 7 KHI LNG XY LP CHNH V TNG MC U T

7.1.

Khi lng xy lp chnh Bng: Bng tng hp khi lng cng tc chnh

TT 1 2 3 4 5 6 7 8 9 10 11 12 12 13 14 15 15 16 17 18 19 20 21 22 23

Hng mc B tng cc loi BT lt M100 xy M100 lt khan Ct cc loi Dm lt cc loi Vn khun Thp trn cc loi Thp hnh cc loi Bao ti nha ng 2 lp Nilon lt Vi a k thut ng cng D40 ng cng D60 ng cng D100 ng nha D50 thot nc Cc BTCT M300 Cc tre cc loi o t p t My ng m V0 My ng m V1 My ng m V5 Ph d cu kin b tng Ph d quy, ng thi cng

n v m m m m m m 100m Tn Tn m m m m m m m m m m m b b b m m

PA.1 3.847,90 145,00 13.599,20 0,00 1.310,70 2.707,29 78,05 76,06 37,91 1.603,02 13.179,50 0,00 234 84 24 2.278,65 160,00 349.848,46 42.597,34 27.871,29 28 20 14 527,95 20.059,49

PA.2 6.273,28 145,00 4.483,03 8.018,01 708,65 6.172,51 328,86 156,55 37,91 1.599,10 13.179,50 36.372,40 234 84 24 333,45 160,00 349.848,46 42.597,34 27.871,29 28 20 14 527,95 20.059,49

7.2. Tng mc u t d nCng ty c phn t vn v xy dng i Pht

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Bng: Tng mc u t d n phng n 1-PA kin nghTT Hng mc Chi ph trc thu () Thu VAT () Chi ph sau thu ()

1 2 3 4 5 6 7

Chi ph xy dng Chi ph thit b Chi ph Qun l d n Chi ph t vn TXD Chi ph khc Chi ph n b GPMB D phng Tng mc u t Lm trn

41.173.393.888 2.670.000.000 826.447.975 4.016.992.738 755.165.401 903.410.000 5.034.541.000 55.379.951.0 02 55.379.951.0 00 Bng: Tng mc u t d n phng n 2-PA So snhChi ph trc thu () Thu VAT () Chi ph sau thu ()

37.430.358.080 2.427.272.727 751.316.341 3.651.811.580 697.542.519

3.743.035.80 8 242.727.273 75.131.634 365.181.158 57.622.882

TT

Hng mc

1 2 3 4 5 6 7

Chi ph xy dng Chi ph thit b Chi ph Qun l d n Chi ph t vn TXD Chi ph khc Chi ph n b GPMB D phng Tng mc u t Lm trn

42.954.911.822 2.427.272.727 829.132.512 4.002.002.043 775.297.033

4.295.491.18 2 242.727.273 82.913.251 400.200.204 64.558.643

7.3. Ngun vn u t.

47.250.403.004 2.670.000.000 912.045.763 4.402.202.247 839.855.676 903.410.000 5.697.791.669 62.675.708.3 59 62.675.708.0 00

D n No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22 c u t bng vn ngn sch thnh ph H Ni. 7.4. C ch dng vn, tng tin u t v phn k u t. C ch dng vn c ngh phn theo dng vn t ngn sch trung ng bng vn u t XDCB hng nm, tng tin phn k ngun vn c b tr trong vng 2 nm, v chia thnh cc gi thu khc nhau, c th l: Theo nm: - Nm th nht: 60% kinh ph . - Nm th hai: 40% kinh ph . Theo gi d kin nh sau: - Gi 01 : Kho st xy dng, lp thit k BVTC-DT - Gi 02 : Xy lp knh v cc cng trnh trn knh


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CHNG 8 HIU QU KINH T V X HI CA D N

8.1.

Phn tch nh gi hiu qu kinh t.

Sau khi d n c thc hin s em li hiu qu kinh t rt ln, c th: + Nng cao hiu qa tiu, gim thiu thit hi v ma mng (gim din tch ngp lt) cho ton b din tch 1241,27ha t, trong c 1.046,75ha t canh tc ca cc x trong khu vc d n. + Nng cao hiu qu tr nc h tr ti cho mt phn din tch t sn xut, gp phn to iu kin cho vic chuyn i c cu cy trng, thm canh nng sut, a dng ho sn phm v thc y pht trin sn sut.8.2.

Phn tch v nh gi hiu qu x hi.

- Gp phn gi vng n nh x hi, pht trin kinh t ca cc x thuc huyn. - Ci to iu kin mi trng sinh thi trn ton tuyn knh. - To iu kin thun li cho vic pht trin mng li ng giao thng nng thn trong vng, m bo cng tc qun l h thng knh c thun li v hiu qu.8.3.

nh gi hiu qu tng hp ca D n.

nh gi hiu qu tng hp ca d n nh chng ta bit phn trn phn tch nh gi hiu qu v kinh t, hiu qu v x hi ca d n. Tin hnh tnh ton cc ch tiu kinh t ca d n vi phng n chn, kt qu tnh ton c th nh sau: 1. Gi tr thu nhp rng NPV = 10.365 triu ng 2. Gi tr thu nhp rng NPV/K = 2,25 3. H s ni hon kinh t EIRR = 15,05% 4. B/C=2,34 T kt qu trn nhn thy vic u t d n hon ton kh thi v cho hiu qu kinh t cao.


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CHNG 9 KT LUN V KIN NGH

9.1.

S cn thit phi u t.

ch ng trong cng tc tiu ng v m bo trm bm hot ng t hiu qu cao th vic u t no vt, ci to, nng cp tuyn knh tiu trm bm An Vng nhm hn ch ti a cc tn ti ang c v m bo tiu trit cho ton b din tch lu vc vo ma ma l, ng thi h tr ti cho mt phn din tch t sn xut nng nghip ca khu vc, t ci thin i sng nhn dn trong vng d n p ng c cc yu cu canh tc v sn xut ca nhn dn, to iu kin cho nn kinh t ca cc x trong khu vc d n ni ring v huyn Chng M ni chung tng bc pht trin l vic rt cn thit v cp bch, l thc hin ng ch trng, ng li, chnh sch ca ng, Nh nc, cng nh lnh o thnh ph H Ni v p ng lng mong mi ca nhn dn trong khu vc d n.9.2.

Tng mc u t.

Tng mc u t ca d n c tnh ton da trn cc s v ch chnh sch ca nh nc, cc thng t ch p dng, nh mc v n gi vt liu. Khi lng xy lp c tnh ton da trn bn v thit k c s. Tng mc u t ca d n theo phng n chn l 55.379.951.000 ng c phn b theo c cu nh sau: 41.173.393.888 1 Chi ph xy dng: 2.670.000.000 2 Chi ph thit b: 826.447.975 3 Chi ph Qun l d n: 4.016.992.738 4 Chi ph t vn TXD: 755.165.401 5 Chi ph khc: 903.410.000 6 Chi ph n b GPMB: 5.034.541.000 7 D phng: 55.379.951.000 Tng cng (1++7):9.3.

Tin u t.

Tin u t ca d n ph thuc vo ngun vn v phn b ngun vn ca cc cp c thm quyn. D tnh tin u t ca d n c phn b theo tin thc hin d n v c phn b trong 2 nm.9.4.

Hiu qu ca D n.

D n i vo vn hnh khai thc mang li hiu qu kinh t cao, gii quyt chng ng cho phn ln din tch t nng nghip v khu dn c cc x Thy hng+TT Chc Sn, Lm in, Hong Diu, Hp ng, i Yn v Qung B. ng thi tr nc h tr ti cho din tch t nng nghip trong khu vc. Qua tnh ton hiu qu kinh t cho ta thy cc ch s kinh t EIRR, B/C, NPV u m bo v d n mang li hiu qu kinh t thc s.Cng ty c phn t vn v xy dng i Pht

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9.5.

Cc bc thc hin v phn giao nhim v.

d n trin khai thun li ch u t phi tin hnh phn giao nhim v cho cc c quan y t cch php nhn nhm m bo thc hin tt cng tc t vn, qun l d n, xy dng cng trnh theo ng tin trnh v m bo trin khai theo ng trnh t thc hin u t theo ng php lut ca nh nc, lut xy dng v cc thng t hng dn thc hin.9.6.

Nhng vn cn tn ti cn nghin cu giai on sau.

Do thi gian hn ch nn n v lp d n u t cn c nhng vn cha nghin cu k v xut trong d n. Trong qu trnh nghin cu giai on sau cn iu tra nh gi chnh xc v hin trng v tnh ton chnh xc s lng cc cng trnh trn tuyn, gii php x l nn mng v kt cu cng trnh trn knh nhm gim chi xy dng v thun li cho cng tc qun l vn hnh.v.v 9.7. Kin ngh. Vi tnh hnh thc t nh vy th vic u t xy dng d n: No vt, gia c b knh kt hp lm ng giao thng nng thn knh tiu N22 l cn thit v cp bch. Knh ngh Ch u t, cc cp c thm quyn xem xt thm nh trnh UBND thnh ph sm ph duyt D n thc hin cc bc tip theo, a d n sm pht huy hiu qu, p ng lng mong mi ca nhn dn trong vng d n, tng thm lng tin ca nhn dn vo ch trng, chnh sch ng n ca ng v Nh nc. Xin chn thnh cm n! N V T VN CNG TY CP T VN V XD I PHT


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