Safety Influence of Shallow Excavation Tunnel under Different Supports

doi:10.3969/j.issn.1674-0696.2011.supp2.021

Journal of Chongqing Jiaotong University(Natural Science) ›› 2011, Vol. 30 ›› Issue (S2): 1212-1216.DOI: 10.3969/j.issn.1674-0696.2011.supp2.021

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Safety Influence of Shallow Excavation Tunnel under Different Supports

LIANG Bo，JIANG Bo-lin

School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China

Received:2011-06-12 Online:2011-12-30 Published:2015-01-22

不同支护措施对浅埋暗挖隧道安全性的影响

梁波，蒋博林

重庆交通大学土木建筑学院，中国重庆400074

作者简介:梁波(1964—)，男，四川隆昌人，教授，博士生导师，主要从事岩土与地下工程的教学与研究。E-mail:liang_laoshi@126.com。
基金资助:
重庆市科技攻关计划项目(CSTC，2010AC6078)

Abstract

Abstract: Firstly，this paper constructed numerical simulation models of Shallow Excavation Tunnel during its different construction procedure，and analyzed the displacement and movement rules of stratum under different supports． Secondly，the influence of different supporting methods on safety of Shallow Excavation Tunnel was studied． Finally，the simulation result shows that all supports measures decreased the stratum collapse and ground settlement． Furthermore，it was also concluded that pre-support and augment of strength of grouting material have limit contribution to reduce ground settlement and horizontal influence area．

Key words: shallow excavation, safety influence, different supports, ground settlement

摘要： 结合浅埋暗挖隧道施工过程，在确定施工方法的前提下，对采用的不同支护措施引发地层的变形特征与运动规律进行了数值模拟分析，研究了不同支护措施对浅埋暗挖隧道安全性的影响。分析表明: 各种支护措施均降低了地层的下陷和地表的沉降，初期支护效应明显; 但如果单纯依靠超前支护或者依靠大幅度提高超前支护注浆材料强度，来控制和降低洞室周围土体的地表沉降和横向影响范围，效果并不显著。

关键词: 浅埋暗挖, 安全影响, 支护类型, 地表沉降

CLC Number:

U455.4

LIANG Bo，JIANG Bo-lin. Safety Influence of Shallow Excavation Tunnel under Different Supports[J]. Journal of Chongqing Jiaotong University(Natural Science), 2011, 30(S2): 1212-1216.

梁波，蒋博林. 不同支护措施对浅埋暗挖隧道安全性的影响[J]. 重庆交通大学学报（自然科学版）, 2011, 30(S2): 1212-1216.

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Safety Influence of Shallow Excavation Tunnel under Different Supports

不同支护措施对浅埋暗挖隧道安全性的影响

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