Research And Application Of Evaluation System Of Rare Earth Mining Status Based On Remote Sensing

As a non-renewable mineral resource,rare earth has become a"vitamin"in industrial development due to its unique physical characteristics.As a precious strategic resource,its rational development and utilization are of great significance to my country’s modern industrial development process.But because of its special value,the phenomenon of random mining or even illegal mining has occurred in the development of rare earths,which is undoubtedly a great waste of resources.Remote sensing technology has the characteristics of rapidity,multiple timeliness,and large range.With the continuous development and improvement of its spatial and temporal accuracy,it has gradually become an effective means of mineral resources supervision and investigation.Based on the characteristics of rare earth development,this paper builds a complete evaluation system of rare earth mining status,selects 6 counties in Jiangnan,Jiangxi as research areas,explores the extraction of rare earth development status and other information based on remote sensing to extract research areas and further realizes the evaluation of rare earth mining status The application has achieved the following results:Through searching and studying domestic and foreign literatures and combining the characteristics of rare earth development,for the first time,a complete evaluation system for rare earth mining conditions was established,including an evaluation structure of 11 factors in 4 aspects,based on the combined weight formed by the combination of AHP method and evidence right method Combined with the comprehensive evaluation method as the evaluation model.The method of evaluating rare earth mining status based on remote sensing is explored.This article selects 6 counties in Gannan as the research area.Based on the collected data of mining rights and high-resolution remote sensing images in the research area in 2018,the research area was extracted through human-computer interactive interpretation and computer extraction technologies in 2018.Rare earth development status and other information,and carried out detailed statistical analysis to lay the foundation for the evaluation work.In this paper,the AHP method was used to conduct multi-scale evaluation of the rare earth mining situation in southern Jiangxi,and the characteristics of its scale effect were analyzed.Through the Moran index and the standard deviation mean,the optimal evaluation scale suitable for the study area was 1434×1434m~2.Through the establishment of the evaluation system and method of rare earth mining status,taking Gannan as the research area,starting from the optimal evaluation scale obtained,and using MATLAB programming to obtain the combination weight value,the ultimate realization of the rare earth mining status evaluation example based on remote sensing technology The research and analysis and verification of the evaluation results through field investigation data have achieved good results.