【摘要】 以某南方富水石灰石矿为工程背景,研究了注浆帷幕的止水效应。取该石灰石矿某典型边坡横剖面,建立了FLAC^3D流固分析数值模型,研究了开挖和渗流作用下边坡应力、边坡变形及孔隙水压力的变化特征。数值模拟分析结果表明:边坡应力、边坡水平位移和孔隙水压力均随着高程的降低而减小;在同一高程下,边坡开挖侧的孔隙水压力相对较小,说明注浆帷幕可有效减少水的渗入量,这对于露天矿业的安全开采和控制周边环境具有重要意义。更多还原

【Abstract】 With a hydrous limestone mine in South China as the engineering background, a study has been carried out on the water-proof effect of the grouting curtain. With a typical cross section of a limestone mine slope as the research sample, a numerical model of FLAC^3D fluid-solid analysis has been established, followed by a study on the variation characteristics of slope stress, slope deformation and pore water pressure under excavation and seepage. The numerical results show that the slope stress, horizontal displacement and pore water pressure decrease with the decrease of elevation. At the same elevation, the pore water pressure on the excavation side of the slope is relatively small, which indicates that the grouting curtain can effectively reduce the water infiltration, a great significant indicator for the safe mining of open pit mining and the control of surrounding environment.更多还原