Geological Environmental Impact Assessment And Impact Degree Division Of Daxian Coal Mine

The extensive development of mineral resources not only can provide people with the necessary energy consumption and the improvement of material life,but also greatly promote the local socio-economic development.But the mining of large-scale mining also brought an unavoidable environmental problems,mining activities are caused by the geological environment caused by pollution and damage,people’s production and life poses a serious threat.Daxian is located in the eastern Sichuan,the territory of low mountains,hilly landforms,rich in coal resources,a large number of coal mines distributed in the geological environment fragile areas,so high strength,unreasonable and other mining methods easily lead to geological problems.Therefore,it is very important for Daxian to carry out investigation,research and evaluation of coal mine geological environment,and to develop mineral resources reasonably and to effectively protect the geological environment.The main work of the paper is as follows:(1)Based on the distribution of mine in Daxian County,the development and utilization of mineral resources and the geological environment conditions of mining area,the geological environment problems caused by mining and the distribution characteristics and influencing factors of geological disasters in the study area were analyzed.(2)Identifing pollution,damage Daxian mine geological environment of the root causes,select the topography,vegetation coverage,geotechnical characteristics,collapse,debris flow,ground subsidence,soil erosion,occupation damage,wastewater discharge 9 evaluation Index to establish a reasonable evaluation system of mine geological environment impact.The weight of the evaluation factor is determined by the analytic hierarchy process(AHP),and then the evaluation method of fuzzy mathematics is used to evaluate the geological environment of Daxian mine comprehensively.(3)On the basis of the results of geological and environmental impact assessment of coal mines,the geological environment impact degree of each coal mine in the study area is divided into three serious areas,which are serious,seriousand slight according to the principle of zoning.(4)According to the different degree of influence of the three districts were proposed with a strong targeted control measures.The study has a certain reference value for Daxian mine and other similar mine geological environment management in China.