The Stability Analysis of Nantong Coal Mine Waste Dump, Chongqing and Prevention Measures

Abstract

Coal mine waste dump often occur landslide and collapse disasters, the prevention measures and stability analysis of the waste dump must be studied.Firstly,the major factors that can cause landslide in Nantong coal mine waste dump,Chongqing were analyzed,secondly,the stability of four geological cross sections were analyzed by the limiting equilibrium method and FLAC numerical simulation method,the conclusions from two methods are same,and the conclusion is the safety factors of cross sections A and C are smallest and landslide and debris flow disasters will occur easily when face with a long heavy rainfall.thirdly, according to the main factors that can cause waste dump landslide easily and combine with the analysis results of limit equilibrium method and discrete element numerical simulation seven prevention measures were proposed, these measures can provide references for similar waste dump.