Mine Geological Environment Survey And Evaluation Based On RS And GIS

Mineral resource is a important constituent part of economic development and social construction,but overdevelopment must unavoidably result in disadvantageous effect on environment and threaten the lives and property of people.Mining geoenvironmental monitoring and impact assessment are conductive to promote the rational exploitation,economical use of mineral resources and geological environment remediation.The research of this thesis is based on the project “Survey the environment of mine in Shandong” of China Aero Geophysical Survey & Remote Sensing Center for Land and Resources,it takes Jiaodong region in Yantai city as study area.I started the project,first of all,by collecting geographical data,remote sensing image,mining right data,etc.;Then use the domestic satellite images to extract information of the regional environment background and mining exploitation area.In the meantime,I apply the weight-of-evidence method to predict the risk zonation of mine geohazards;Finally based on the aforementioned indicator information to evaluate the quality of geological environment.The following results have been achieved:(1)Image preprocessing based on multi-source remote sensing images according to the request of the project,extract information of the landform and vegetation cover;(2)According to the theory of object-oriented classification,I apply the image segmentation and information extraction method to domestic satellite images,finally summarized a procedure of mine area information extraction;(3)Based on the relationship between geological hazards and evidence data,the paper introduce weight-of-evidence method to calculate the contribution value of evidence data to the happen of geological hazards,the posterior probability map of geological hazards is made to extract information of the risk area of geological hazards.(4)I build evaluation fishnet to statistics the indicator level information related to mine environment,then using AHP method to analyze the impact of each factors on mine environment.Finally,combing the grading standard of mine environment evaluation index,I evaluated the mine environment by using the zoning of mine environment quality(good,nether good,median and inferior).Through the above research results,RS and GIS can play an important role in monitoring mineral resource exploration and combing corresponding method to evaluate mine environment is reasonable and comprehensive.