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:Chongqing University
• 2:Chongqing 400044
• 3:China
• 4: 2.Chengdu University of Technology

Abstract：

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.

Key Words： stress;restoring method;dependence factors;Erlang mountain tunnel

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Authors: 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;

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