Shizhuyuan Pheasant Tail Mine Disasters, Geological And Governance Programs

Located in Chenzhou City of Hunan province, Shizhuyuan nonferrous metals deposit is well-known as the museum of nonferrous metals. Yejiwei mine is the important part of Shizhuyuan deposit. With the going on of production, the land collapse and the other karst geological disaster are always happening for the developing of covering karst which seriously affect the normal producing.Based on the predecessor's work, through the careful and thorough hydrogeology,disaster geology and engineering-geology investigation, acquisition of a great amount of geological information, the article is beginning with the problems which predecessor can't solve, applying the method and theory of disaster-geology , geohydrology , environgeology, engineering-geology and engineering mechanics, using computer to deal with data and simulate relevant maps.It research the cause of ore district geological disaster from the following aspects:1. The connection between water bursting in mine tube with surface water, karst water, crack water and mine tailings water;2. The relation between land collapse with hidden karst, geological structure, , sediments of quaternary and rainfall;3. The relation between workshop with land collapse;4. Stability analysis of potential landslide in concentrator.The study suggested that the resource of water bursting in mine tube are surface water> karst water and crack water etc. Niujiaoneng stream is the main resource of surface water; the land collapse is caused by the destroy the balance of underwater hydrodynamic conditions for water bursting in mine tube at 400m sublevel. The distortion of workshop is the result of the base nonuniform sinking by land collapse. It thinks that the landslide is unstable state by the ways of origin historical analysisand limit equilibrium methods.The measures of management are discussed which are based on the different causes of geological disaster in ore district.