IMPACT ASSESSMENT OF GEOLOGICAL ENVIRONMENT OF DAYE MINING AREA IN SOUTHEASTERN HUBEI PROVINCE

Geo-environmental problems of mining cities have been increasing in China. It is necessary to assess mine geo-environment impact(MGEI)in these mining cities for instructing the mine development and protecting environment. RS data is adopted to assess MGEI in the Daye mining area in southeastern Hubei Province. A MGEI index system is established by considering geo-environment background, geo-environment problems and mining activities. The fussy comprehensive assessment method is employed to assess the geo-hazard susceptibility before mining and the MGEI after mining respectively. The result indicates that:(1)Under the natural state, the high, medium, relatively low and low easy-happening areas of geological hazard take up 3.29%, 12.55%, 24.53% and 59.62%,respectively.(2)Under the mining state, the severely, less severely, relatively slightly and slightly impacted areas of mine geo-environment take up 13.63%, 22.96%, 33.95% and 29.46%,respectively. The assessment result can be applied in mine planning and comprehensive geo-environment reclamation.