基于流-固耦合的露天矿山边坡地下连续墙变形特性研究  

Research on the Deformation Characteristics of Diaphragm Wall of Mine Slope Based on the Fluid-solid Coupling Theory

作　　者：姚鹏飞[1,2] 高永涛[1,2] 金爱兵[1,2] 杨艳青[1,2] 柏天航[3] 陈银萍[1,2] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与环境工程学院,北京100083 [3]昆士兰大学采矿与冶金学院

出　　处：《矿业研究与开发》2015年第6期49-53,共5页Mining Research and Development

摘　　要：岩土体的物理力学参数及地下水位差异是地下连续墙力学性能的主要影响因素。采用FLAC3D流-固耦合分析模块,模拟分析边坡土体弹性模量、内聚力及地下水位等因素对地下连续墙受力弯矩和位移等变形特征的影响。研究结果表明:相比边坡土体内聚力,弹性模量与排水疏干程度是墙体受力弯矩与内力的主要影响因素。在保持边坡稳定前提下,边坡含水能够有效减少墙体的弯矩及位移。设置地下连续墙后,边坡止水效果明显,并且能够保持稳定。The mechanical parameters of rock and soil as well as the differences in underground water levels are two major factors for the mechanical properties of diaphragm wall.The FLAC3Dfluid-solid coupling module was applied to simulate and analyze the bending moment and deformation characteristics of diaphragm wall under different conditions of elastic modulus of soil bulk,cohesion and underground water levels.The research showed that the elastic modulus of the soil and the drainage dewatering of the slope were the major factors impacted on the bending moment and displacement of diaphragm wall compared to the cohesion.Under stable slope,the underground water of slope was benefit to the diaphragm wall.After building the diaphragm wall,the effect was obvious on shutting off underground water and remaining the slope stable.

关 键 词：地下连续墙 边坡稳定性分析 变形特性 流-固耦合 

分 类 号：TD854.6[矿业工程—金属矿开采]