Influence Degree Evaluation Of Mine Geological Environment And Control Scheme Design

Baishan City is located in the southeast of Jilin Province,which is one of the richest areas in mineral resources of Jilin Province.For recent decades,with the high strength exploitation of mineral resources,the problems of mine geological environment in Baishan City have become more and more serious,and the occurrence of geological disasters,ecological destruction and environmental pollution in mining areas are especially intensified,which are caused by the backward of mining methods and processing technologies in small and medium-sized mines.So an important problem to be solved urgently in the development of resource-based cities is how to coordinate the relationship between mineral exploitation and ecological environment.Based on the field investigation of Shansonggang Cu(Co,Ni)mine in Baishan City,Jilin Province,the primary data was obtained,including the geological environment background and mining status of this mineral area.By studying the status of the Cu(Co,Ni)mine's geological environment,this paper summarizes the problems of mine geological environment.The main four aspects of this problem are geological disasters,the influences of water environment,topography and landscape destruction and occupations of land resource.The research area was determined to be1.3129 km~2,which was divided into 32 evaluation units,and 11 factors were selected as evaluation factors,and the evaluation systems and evaluation models were established.By respectively using hierarchical analysis process,the method of gray relational degrees and fuzzy comprehensive evaluation,Shansonggang Cu(Co,Ni)mine was evaluated.The research area was divided into two parts according to the evaluation results and actual situations of the mine.The two respective areas were the serious influenced area and the relative slight influenced area.And the serious influenced area occupies about 4.73 hm~2 of the whole research area,accounting for about 3.6%.In combination with the conditions of the field investigation,the selected evaluation factors,systems and evaluation methods are proved reliable and effective.According to the evaluation results,the corresponding countermeasures for the treatment and restoration of mine geological environmental problems are put forward.The research results provide a scientific basis for assessment and treatment of the Cu(Co,Ni)mine's geological environment of this area,and also offer theoretical reference for environmental assessment of other similar mines.