Research On The Mine Geological Environment Evaluation Of Panzhihua

Panzhihua City is rich in mineral resources,complete in minerals,large in reserves,and has a long history of mining.It is a mining city established from mining of mineral resources.While the exploitation of mineral resources has brought economic benefits to Panzhihua City,it has also brought a series of geological environmental problems to the mines,such as the frequent occurrence of geological disasters in mines and the pressure and damage of land,hindering the sustainable development of mineral resources.Therefore,based on high-resolution satellite remote sensing technology,the study of geological environment evaluation of mines in Panzhihua City is not only the need to promote the sustainable development of the mining industry,but also the inherent requirement for the Ministry of Land and Resources to provide scientific support for mine management.This paper has collected basic geological and geographic data of Panzhihua City,remote sensing image data of Pleiades-1 satellite in 2017,vector data of mining rights and exploration rights of Panzhihua City,and DEM data of Panzhihua City of 30m×30m.Using ENVI5.1 software technology,Pleiades-1 satellite remote sensing image was preprocessed,and a complete set of remotely interpreting signs of mine geological disaster,land pressure occupation and damage was established in Panzhihua City.According to the sign of remote sensing interpretation,the combination of indoor remote sensing interpretation and field investigation was used to comprehensively analyze and study the geological environment problems of major mines in Panzhihua City.Based on a comprehensive analysis of the geological environmental problems and characteristics of the mines in Panzhihua City,the study area was divided into 200 m × 200 m evaluation cell grids.Selecting the slope,the distance from the fault,the distance from the river system,the lithology of the formation,the rainfall amount,the vegetation coverage,the distance from the highway,the development land occupation,the mining scale and the mining method,ten index factors constitute the evaluation index system.Evidence weight model was used to evaluate the geological environment of the mine in Panzhihua City.The zoning map of the geological environment of the mine in Panzhihua City was obtained,and the evaluation results of the district were analyzed.The evaluation results show that the geological environment of the mine in Panzhihua City can be divided into three districts: good quality district,middle quality district and poor quality district.The mine geological environment with good quality and medium quality is mainly distributed in the mining area of the Hongye coal mine in Yanbian County.The poor geological environment of the mine is located in the Baoding coal mining area in Renhe District,Panzhihua City,the Zhujiabaobao Iron Mine in the Eastern District,the Hongge Iron Mine in the Yanbian County,the Baima Iron Mine in the Yiyi County,and the granite mining area.The zoning results of mine geological environmental assessment in Panzhihua City are in good agreement with the field investigations in the field,which provides an important scientific basis for guiding Panzhihua City to develop sustainable use of mineral resources and mine ecological environment protection.