关键词: 矿山, 地质灾害, 稳定性分析, 综合评价, 防治措施

Abstract: The main geological hazard types include mining subsidence,unstable rock masses,earth surface crack,landslide,solid waste residue in Chimashan copper mineAfter giving a brief overview of the basic profile and geological conditions of the mine,the paper focus on analysis of their causes,status,harm as well as failure mode,and the stability factors are also calculated for the unstable rock masses and potential landslide at present conditionsThe overall goal,basic principle and scheme of the treatment engineering are proposed by comprehensive evaluation of the strata lithology,surrounding environment and stability degree of those hazard bodies in prevention areaThe comprehensive prevention engineering measures include slope surface shaping,cutting slope and unloading,backfilling and back pressuring,blast demolishing,retaining and reveting,intercept dam enclosuring,draining and waterproofing,ecology restoring and engineering monitoring,and the engineering arrangement and detail structure parameters of the control measures are also introducedAccording to the stability calculating results of treated slopes,the safety factors can meet the requirement of the specificationsThrough the implementation of the scheme,not only the security risks of geological hazards can effectively be eliminated,but also the ecological environment can all be restored in the mineThe prevention mode can provide reference for the geological environment protection and hazard treatment of the similar closed mine.

Key words: Mine, Geological hazard, Stability analysis, Comprehensive assessment, Prevention measure