Application Of AHP In Mine Geological Environmentassessment In Nanchuan District In Chongqing City

As the development of economy, the environment problem is becoming moreand more serious.Scientific exploiting of mineral resources and protecting the ecological environment has become an important subject of study.In recent years, the research work of mine environment has been spread out in our country, in which the mine geological environment assessment is one of the most important content.At the present time, with the development of remote sensing technology, the data of commercial resources satellite has much higher spatial resolution and spectral resolution. It is an inevitable nationwide trend to utilize RS to monitor the distribution of mineral occurrence and solid waste and environmental problems that triggered by mineral development. At the same time, GIS has been widely used in agriculture, forestry, geological mining, resource management, environmental monitoring, disaster evaluation, etc., to provide auxiliary decision making support for social sustainable development. This article uses remote sensing and geographic information systemtechnology as the foundation to evaluate the mine geological environment on the research background of Nanchuan.On the basis of single factor evaluation, there is a comprehensive assessment of mine geological environment quality according to the different mine environment characteristics, such as distribution range, growth situation and development tendency. Square cells are used for assessment unit. Comprehensive assessment model is structured by using analytic hierarchy process(AHP) to an index system weight assignment. Importance scales should be acquired according to the expert scoring and experience data. The analyses and evaluations are carried out on the MAPGIS and ArcGIS platforms.Through the above-mentioned work, quantitative and qualitative evaluations of the mine geological environmental quality will be put out. The evaluate results are classified to find out the main environmental geological problems, so that we can make effective decisions for the protection and improvement of mine geological environment. We make it possible the protection will keep pace with the development.It is of great theoretical significance and practical value to sustainable development of Nanchuan.