Remote Sensing-based Geological Environmental Assessment Of The Mine Concentration Area In Mozhugongka County,Tibet Area

Mine development activities inevitably destroy the original ecological balance in the natural world.The environmental deterioration caused by mining cannot be ignored.The geological disasters and ecological damage caused by mining seriously endanger the lives and property of the people and constrain the sustainable development of the society and economy.The metal mineral reserves in Mozhugongka County in Tibet are huge.Due to the remote location,the recovery and treatment of the mine environment is lagging behind by factors such as transportation and technology.In addition,the natural conditions in the area are fragile and the environmental carrying capacity is low.Natural restoration is extremely difficult.The use of remote sensing technology to mine the geological environment in this area is conducive to the planning,improvement,and treatment of the mine's geological environment in the future.This paper takes the Mine concentration area in Mozhugongka County in Tibet as the research area,and uses the 2016 SPOT7 remote sensing image as the data source to establish the interpretation marks for mining land occupation and various disasters,pollution,and restoration and management,and to extract related information.Field verification in the field identified the major factors and locations of the environmental problems in the area and traced the source of the problem.At the same time,a large number of geological,environmental,and disaster data were collected and reference was made to the current published With regard to the research literature on the evaluation of geological environment of mines,12 assessment indicators covering the five elements of physical geography,basic geology,mineral development activities,mine environment and geological disasters that can determine the geological environmental quality of the mine have been selected to suit this The mine geological environment evaluation index system in the region and the related industry standards quantify and classify the evaluation indicators.In order to ensure the objectivity of the evaluation results,the combination of the analytic hierarchy process and the rough set is used to determine the weights of the evaluation indicators.Finally,the elements are adopted.Index weighted comprehensive evaluation model and grid method evaluation method,rating results It is divided into three levels: “severe area”,“more severe area” and “lighter area”,and establishes the criteria for grading evaluation results,forming a mine geological environment evaluation system in the area,and conducting evaluation and research on it.The evaluation results are in line with the field verification actual conditions,and have some degree of objectivity.Through the evaluation of the mine geological environment in this area,it is concluded that the areas with serious,relatively serious and light geological environment in the study area account for 6%,13% and 71% of the total area of the study area.The overall geological environment quality of the mine should belong to The severity level was analyzed and the reasons for the more serious geological environment in the mining area of the mine were analyzed and reasonable suggestions were put forward.