Danh may
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31Php kim tra nh sau:
Do khi lng o v t chng ti khng kim tra thc a. Dng phng php bt im cng trnh v tuyn kim tra a hnh. C th, chng ti dng 30 im cng trnh bt ln bn . Kt qu bt im cng trnh t cht lng cho bng 9.
Bng thng k cht lng kim tra bn a hnh
Bng 9
S th tTn bn vS im cng trnhKhong cao u(m)im cng trnh t %mS
1/2h1/2h-hh-2hSai s v tr im M(m)
1Kim bi3010,06723100,050,04
Qua kim tra mt s im cng trnh bt ln bn v thy rng im cng trnh ph hp vi a hnh. Sai s u nm trong gii hn cho php. Cht lng bn a hnh t yu cu k thut s dng trong bo co tng kt.D- Phng php o lin kt cng trnh.
Theo phng n c ph duyt, cng trnh cn xc nh cao v ta l cc l khoan, trm quan trc im l, u, cui tuyn a vt l,v.v.
1. Tuyn a vt l: Phng n thm d thi cng 7 tuyn a vt l, ly con ng quc l 12b lm trc b gc vung cho cc tuyn I n tuyn VI cn tuyn XIV, XV o theo ng mn.
Phng php xc nh: Dng my kinh v c gn a bn xc nh phng hng tng tuyn, kt hp my v mia dc chiu di xc nh ca tuyn trc. Khi c im tuyn trc dng my v mia b gc vung xc nh tuyn ngang.
km tra lch ca tuyn, sau khi xc nh tuyn xong, chng ti dng ng sn khng ch hai u tuyn tnh ta .
chnh xc ca tuyn trc tng ng ng sn th c, cc im tuyn ngang tng ng im chi tit. Kt qu o c p ng kp thi cho b mn a vt l.2. Xc nh cng trnh ch yu v th yu:
im cng trnh c xc nh ch yu bng phng php cc. Cc im ng my l im ng sn, c bit c im phi ng cc ph o. Cc im cng trnh u c tnh ra ta v cao thy chun. Kt qu c thng k bng 10.
Bng thng k cht lng im cng trnh
Bng 10
S th tTn cng trnhim khi tnhPhng php xc nhPhng php o khong cchPhng php caoKhong cch ti cng trnh
1LK3SCc""100.0
2LK4Sng sn""271.0
3LK5ng snCc""26.0
4LK6""""103.0
5LK7""""130.0
6LK8""""148.0
7LK9Gii tch3ng sn""188.0
8LK11ng snCc""105.0
9LK12""""105.0
10LK13""""70.0
11LK14""""150.0
12DDL145(h ga)""""148.0
13.TIX-9""""190.0
14.+2 TXVI""""208.0
15.0 TXVI""""256.0
16 4 TXV""""125.0
17CT +9 TXIV""""122.0
180 TXIIA""""160.0
19TVIIB""""360.0
20TVIIC""""100.0
21TVIIB""""50.0
22OTVIB""""112.0
23OTVIA""""19.0
24CT +3A""""153.0
25OTIIIA""""100.0
26OTIA""""42.0