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。
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.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2011年第A02期1212-1216,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市科技攻关计划项目(CSTC
2010AC6078)
关键词
浅埋暗挖
安全影响
支护类型
地表沉降
shallow excavation
safety influence
different supports
ground settlement
