高地应力下地下洞室群开挖过程的数值模拟  

Numerical Simulation for Excavation of Underground Caverns Under High Geostress Conditions

作　　者：陈景涛[1] 朱进明 苏国韶[3] 

机构地区：[1]武汉理工大学理学院,湖北武汉430070 [2]中电武汉电子广场,湖北武汉430022 [3]广西大学土木建筑工程学院,广西南宁530004

出　　处：《华中科技大学学报（城市科学版）》2009年第4期5-9,共5页Journal of Huazhong University of Science and Technology

基　　金：国家自然科学基金(50809017)

摘　　要：采用适用于高地应力下硬岩的弹-脆-塑性本构模型,对某水电站地下洞室群的开挖过程进行了数值模拟,得到了高地应力下地下洞室群开挖过程中位移场、应力场和塑性区的演化过程。比较发现,数值模拟结果和实测位移及松动圈较为一致,表明数值计算的方法和结果正确可信,为高地应力条件下硬岩地下工程的计算、设计、优化和围岩稳定性分析提供了科学依据。The elastic-brittle-plastic constitutive model, which can be used in the analysis of hard rock underground engineering under high geostress conditions, is used in the numerical simulating excavation of hydro- power station underground caverns. The evolvement of displacement, stress and plastic zone with excavating is obtained. The calculating result agrees with the measured results and that shows the method of numerical simulation is right. The numerical simulating result can he used in the calculation, design, optimization and stability analysis of hard rock underground engineering under high geostress conditions.

关 键 词：高地应力 地下洞室 开挖过程 数值模拟 

分 类 号：TU452[建筑科学—岩土工程]