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《Chinese Journal of Underground Space and Engineering》 2007-04
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Three-Dimension Numerical Simulation Analysis on the Inter Section of the Tunnels

LAI Xiao-bin1,2,XU Xiao-min1,ZHANG Bo-hu1,LU Ping1(1.School of Civil Engineering,Chongqing University,Chongqing 400045,China;2.Aluminum Corporation China Limited,Zhengzhou 450041,China)  
The 3-D models of several crossing tunnels are established and analyzed in this paper.The interaction of the tunnels and the stability of the crossing point are studied.It shows that the interaction of the tunnels only lies in the district of two times of the tunnels' dimension.There are some visible stress decreasing districts at the crossing of the tunnels. It is found that the value of the stresses distribution changes greatly at the crossing of the tunnels.The stress of the sidewall near the crossing are diverse and the stresses in the curve of the tunnels are undulate.The stress concentration in the intercross can be avoided if the edge of the intercross would be weakened,which can improve the distribution of the stress.
【Fund】: 国家科技攻关计划“西部开发行动”重大项目(2004B901A02)
【CateGory Index】: TD322.4
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