靳晓光,王兰生,李晓红
JIN Xiao guang 1;WANG Lan sheng 2;LI Xiao hong 1 (1.Key Laboratory of South West Resourse Development and Environment Hazard Control Engineering of MOE;

• 1:重庆大学西南资源开发与环境灾害控制工程教育部重点实验室
• 2:成都理工学院
• 3:重庆大学西南资源开发与环境灾害控制工程教育部重点实验室 重庆400044
• 4:四川成都610059

摘要(Abstract)：

围岩二次应力场是地下工程开挖后地应力释放并重新进行调整形成的 ,其分布和大小与工程地质条件及施工状况有关 ,并且直接影响着施工安全和支护措施的优化。本文利用适于现场操作的改进型应力恢复法现场测试围岩的二次应力场 ,结合数值模拟研究其沿隧道轴线及横断面方向的变化 ,分析其与原始地应力场、围岩类别、断裂构造、浅表生改造、地下水状态及施工状况等因素的相关性 ,不仅为地下工程围岩二次应力场研究提供了资料 ,而且为隧道信息化施工及时提供了信息
With underground engineering excavated,geo stress released and being regulated,surrounding rock quadratic stress field was formed.The distribution and magnitude of quadratic stress field relates to engineering geological condition and it affects safety construct and supporting measures directly.Quadratic stress field of surrounding rock was measured in site by using suitable for measuring and improved stress restoring method,combined numerical modeling,the variability features of surrounding rock quadratic stress field along the tunnel axis and cross section were researched in this paper.The dependence between surrounding rocks quadratic stress and geo stress field,surrounding rock class,fracture tectonic,epigenetic surface formation,the state of underground water and construction,was analyzed.It has submitted data to research of quadratic stress field in underground engineering and information immediately to information construction in tunnel.

关键词(KeyWords)： 应力;恢复法;相关性因素;二郎山隧道
stress;restoring method;dependence factors;Erlang mountain tunnel

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 靳晓光,王兰生,李晓红
JIN Xiao guang 1;WANG Lan sheng 2;LI Xiao hong 1 (1.Key Laboratory of South West Resourse Development and Environment Hazard Control Engineering of MOE;

参考文献(References)：

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