Analysis On The Present Situation Of Mine Geological Environment In The Southern Section Of Daxinganling Mountain

The southern part of the Daxing'anling Mountains in Inner Mongolia Autonomous Region is located in the eastern part of the Autonomous Region and the middle-south part of the Daxing'anling Mountains.It is distributed from north to south in the areas south of Zhalantun-Wulanhaote Line in Hulunbeier to north of Wengniute Banner in Chifeng.This area belongs to the "three belts" of the main mineral resources and the "three basins" of the autonomous region,"the polymetallic metallogenic belt in the middle-south section of the Daxing'anling Mountains",which is an important non-ferrous metal mineral resources and building materials non-metallic mineral resources concentrated mining area in the autonomous region.Because the development and utilization of mining industry has great influence on the geological environment of mines,the problems of mine environmental geology derived from mining industry are complex and diverse.Based on the statistical analysis of the mine geological environment data in the southern part of the Daxing'anling Mountains,this paper determines that the main mine environmental geological problems in the southern part of the Daxing'anling Mountains are the occupation and destruction of land resources by mining development and utilization,which affects the landform and landscape;secondly,the mine geological hazards,in which the surface subsidence of the mining area is relatively prominent and universal.The paper establishes a mine geological environment evaluation system,first calculates the index weight by using the analytic hierarchy process after consistency checking,then calculates the evaluation result by using the fuzzy comprehensive evaluation method.Taking Lianhuashan Copper Mine as an example,the paper illustrates the operation steps and methods of the comprehensive evaluation,so as to obtain the final comprehensive evaluation result,the selected factors are reasonable and the method is feasible.According to the results of mine geological environment control in the southern part of Daxing'an Mountains during the investigation period,this paper summarizes the mine geological environment control model suitable for the study area which is easy to popularize.According to geological hazards,occupied damaged land and tailings reservoir,the paper gives the geological environment control model respectively,and the ecological restoration model according to ground subsidence,open pit mining,solid waste and tailings reservoir respectively.At the same time,the suitable monitoring mode of mine geological environment is summarized and given.