深埋隧洞渗流与应力耦合分析  

Analysis of Coupled Seepage and Stress Fields in Deep Tunnel

作　　者：张继勋[1,2] 盛亮[2] 任旭华[2] 于牧萍[3] 

机构地区：[1]水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学水利水电学院,南京210098 [3]河海大学土木与交通学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2012年第4期20-23,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金面上项目(50978083);水文水资源与水利工程科学国家重点实验室开放基金(2011491211);中央高校科研业务经费项目(2009B07714)

摘　　要：富水区深埋隧洞工程,在建设过程中面临着与浅部隧洞明显不同的岩石力学问题,高水压力和高地应力是这类工程遇到的两大难题.地下水的渗流一方面对地下洞室的排水及周围地下水位有很大影响,另一方面地下水渗流对洞室围岩的力学、物理和化学性能产生影响.以有效应力原理为基础,应用渗透系数和孔隙度随体积应变改变而改变的动态演化模型,通过ABAQUS提供的接口,编制了用户子程序,从而实现了渗流与应力完全耦合,分析了渗流场与应力场的相互影响程度,为工程设计和施工提供了理论支撑.The main problems of engineering geology, including the high geostress and high external water pressure in construction of deep tunnel in rich water area. The groundwater seepage has great influence on the underground drainage and the surrounding groundwater level~ on the other hand; it also influences the me-chanical, physical and chemical properties of the surrounding rocks. This paper is based on effective stress principle and applies the dynamic evolution model of permeability and porosity changes with the change in vol- umetric strain. And then the huge commercial 3D-FEM software of ABAQUS is utilized and through its inter- face user subroutine programm to fully couple seepage and stress. The interaction between the seepage field and stress field of deep underground engineering is analyzed, so as to provide a theoretical support, for engi-neering design and construction.

关 键 词：深埋隧洞 渗流场 应力场 耦合分析 

分 类 号：TV139.16[水利工程—水力学及河流动力学]