施工技术
施工技術
시공기술
Construction Technology
2015年
19期
106-109
,共4页
隧道工程%浅埋黄土%沉降%裂缝%施工技术%监测
隧道工程%淺埋黃土%沉降%裂縫%施工技術%鑑測
수도공정%천매황토%침강%렬봉%시공기술%감측
tunnels%shallow-buried loess%settlement%cracks%construction%monitoring
以兰山隧道洞口V级围岩浅埋段施工为例，对采用三台阶临时仰拱法进洞施工中产生的沉降、裂缝较大等问题进行了原因分析，并提出了加密临时仰拱、增加临时竖撑及斜撑、洞口两侧施作反压墙等一系列措施。通过以上措施的及时施作，有效控制了围岩的变形及裂缝的发展，确保了隧道安全进洞。
以蘭山隧道洞口V級圍巖淺埋段施工為例，對採用三檯階臨時仰拱法進洞施工中產生的沉降、裂縫較大等問題進行瞭原因分析，併提齣瞭加密臨時仰拱、增加臨時豎撐及斜撐、洞口兩側施作反壓牆等一繫列措施。通過以上措施的及時施作，有效控製瞭圍巖的變形及裂縫的髮展，確保瞭隧道安全進洞。
이란산수도동구V급위암천매단시공위례，대채용삼태계림시앙공법진동시공중산생적침강、렬봉교대등문제진행료원인분석，병제출료가밀림시앙공、증가림시수탱급사탱、동구량측시작반압장등일계렬조시。통과이상조시적급시시작，유효공제료위암적변형급렬봉적발전，학보료수도안전진동。
Based on the shallow?buried loess tunnel portal construction of the Lanshan tunnel in surrounding rock of grade V, this paper introduces the construction problems of larger settlement and cracks by using three?bench and temporary inverted arch construction method. After analyzing the causes, this papers proposed the solutions, including encryption temporary inverted arch, increasing brace, building backpressure wall and other measures. Through the above measures, it is effective to restrain the development of settlement and cracks, ensuring the safety of breaking into a shallow?buried loess tunnel.
