Study On Evaluation And Governance Of Mine Geological Environment In Gaoyang Coal Mine

Shanxi Province is a big province of coal resources.For a long time,the exploitation of coal resources has made great contributions to the economic development of the whole province.The rich mineral resources support the rapid economic development of the whole province,and at the same time have caused serious damage to the ecological environment.Mining and the construction of tailings ponds not only occupy a large amount of land,but also destroy the original vegetation,which leads to the pollution of air,water and soil environment and the destruction of ecological environment in mining areas.At the same time,they pose a threat to the living environment of surrounding residents and seriously restrict the sustainable development of economy.Therefore,it is necessary to pay attention to the treatment of mine ecological environment,carry out the investigation and evaluation of mine geological environment in an all-round way,and provide scientific basis for the restoration and treatment of mine geological environment.In this paper,the geological environment of Gaoyang coal mine was investigated and studied.On the basis of fully collecting meteorology,hydrology,topography,geomorphology and previous exploration and research work,the geological disasters,aquifers,topography and landscape,and the destruction of land resources were evaluated by data collection,field investigation,etc.,and the causes of geological environment problems were deeply analyzed by AHP,and the model of mining environmental geological problems in Levin coal mine was established.The main conclusions are as follows:(1)The geological environment problems of Levin coal mine mainly include geological disasters such as collapse,landslide,ground collapse and ground fissures caused by mining,destruction of water resources and water environment,destruction of topography and landscape,occupation and destruction of land resources;(2)The field investigation was carried out on geological disasters,land occupation and damage,topography and landscape damage,etc.the investigation route spacing and control point density were determined according to the complexity of geological environment conditions in the investigation area and the types of mine geological environment problems.The survey area is 53.29 km ~2,There are 284 field survey points.Among them,there are 26 collapse points,5 landslide points,1 debris flow point,103 ground collapse and ground fissure points,34 human engineering points,78 hydrological points,6 geological points,6soil investigation points,and 25 topographic and geomorphic points;(3)According to the survey results,the comprehensive evaluation index system of mine geological environment in the study area was established,by evaluating the impacts of mine geological disasters,aquifer water resources,topography and landscape and land resources respectively,and superimposing the zoning results of each factor,the survey area is divided into "severe areas" with an area of 19.06 km ~2,"relatively severe areas" with an area of2.78km~2 and "light areas" with an area of 31.45km~2,and reasonable prevention and control measures are put forward.(4)According to the evaluation results of mine geological environment,the development trend of mine geological environment problems such as geological disasters,aquifer damage,topography and landscape impact and land resources damage are analyzed and studied,and the sustainable development mode of geological environment suitable for the actual situation of Gaoyang coal mine development is put forward.The main contents include:key treatment of geological disasters,aquifer treatment,comprehensive treatment of mine waste water and slag,rational development and planning of land use,prohibition of advanced mining and destructive mining,realization of coordinated development of mine mining and environmental protection,improvement of ecological environment in coal mining area,and harmonious development of human and nature.