本文采用三维有限元方法模拟了秦岭隧道二线平行导洞穿过fq7断层破碎带的施工过程, 分析了开挖过程中隧道围岩的变形规律与特征、围岩应力分布及其变化规律、围岩中破坏区分布 范围,这些成果对于指导隧道施工具有重要意义。研究还表明三维有限元方法在隧道和地下工程 中有着广泛的应用前景。
Abstract
This paper presents a simulatio n of the ex cav atio n of Qinling tunnel g oing th ro ug h fq7w eak zone by 3D finite element method. It a nalyses the defo rmatio n, st ress di st ribution and the f ractured zo ne of the sur ro unding ro ck in the ex cava tio n process. The resul ts set up a scientific basis for safe co nst ructio n o f the tunnel.
Key words
tunnel /
fault f ractured zone /
3D fini te element method /
simulatio n
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参考文献
1 Qi ao C. Th e s tabili ty study on th e underground mine in joint ed rock s by 3D-FEM. Thi rd Asi a-Pacif ic mining conf erence and exhibi tion. Manil a, 1992: 215～ 233 2 金丰年等. 隧道开挖的三维有限元计算.岩石力学与工程学报, 1996, 15( 3): 193～ 200 3 耿克勤等. 拱坝和坝肩岩体的力学和渗流的耦合分析实例,岩石力学与工程学报, 1997, 16( 2): 125～ 131 4 Hoek E.& Brow n E. T. , Underground excavati ons in rock. Lond on: IM M, 1980
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