基于Midas的某大型矿山排土场稳定性模拟计算  

Stability simulation calculation of a large mine dump based on Midas

作　　者：崔世新 史建松 CUI Shi-xin;SHI Jian-song(Tianjin North China Geological Exploration General Institute,Tianjin 300170,China;North China Engineering Investigation Institute Co.,Ltd.,Shijiazhuang 050021,China;Technological Innovation Center for Mine Groundwater Safety of Hebei Province,Shijiazhuang 050021,China;Technology Innovation Center for Groundwater Disaster Prevention and Control Engineering for Metal Mines Ministry of Natural Resources,Shijiazhuang 050021,China)

机构地区：[1]天津华北地质勘查总院,天津300170 [2]华北有色工程勘察院有限公司,河北石家庄050021 [3]河北省矿山地下水安全技术创新中心,河北石家庄050021 [4]自然资源部金属矿山地下水灾害防治工程技术创新中心,河北石家庄050021

出　　处：《地下水》2024年第5期189-191,共3页Ground water

摘　　要：排土场是矿山采矿排弃物集中排放的场所,是一种巨型人工松散堆垫体。如果排土场边坡发生失稳,将导致矿山土场灾害和重大工程事故,影响到矿山的正常生产,并使矿山蒙受巨大的经济损失。本文以某大型矿山排土场边坡为例,在系统分析其工程地质条件的基础上,进行了等级划分、分区评价、模拟计算等工作。研究结果表明,该排土场边坡等级为一级,将其划分为四个区域,其中A区的边坡高度最大、潜在危害最严重。采用Midas软件,计算了三条典型剖面的稳定系数,其中A-A’剖面稳定系数为1.401,B-B’剖面稳定系数为1.385,C-C’剖面稳定系数为1.404,均处于稳定状态。但是,需要加强局部的变形监测和极端地质条件下的稳定性分析。A waste dump is a place where mining waste is concentrated and discharged,and it is a giant artificial loose cushion.If the slope of the waste dump is unstable,it will lead to disasters and major engineering accidents in the mine,affect the normal production of the mine,and cause huge economic losses to the mine.This article takes the slope of a large mining waste dump as an example,and based on a systematic analysis of its engineering geological conditions,conducts grading,zoning evaluation,simulation calculation,and other work.The research results indicate that the slope level of the waste dump is Level 1,and it is divided into four areas,with Zone A having the highest slope height and the most serious potential hazards.Using Midas software,the stability coefficients of three typical profiles were calculated,among which the A-A′profile stability coefficient was 1.401,the B-B′profile stability coefficient was 1.385,and the C-C′profile stability coefficient was 1.404,all in a stable state.However,it is necessary to strengthen local deformation monitoring and stability analysis under extreme geological conditions.

关 键 词：排土场 稳定系数 MIDAS 剪切应变 数值模拟 

分 类 号：TD854.7[矿业工程—金属矿开采]