Evaluation and Division of the Geological Environment of Gangxia Rare Earth Mine Based on MapGIS
WANG Ting-Ru
2016, 45(02):
168-171.
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1065 )
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In order to conduct comprehensive evaluation of the geological environment of the typical monomer mine with small distribution area and specified minerals,taking the Gangxia rare earth mine of Ganzhou city,Jiangxi province as the research example,based on filed geological investigation,large amounts of information of Gangxia rare earth mine are obtained,such as the topography and hydrogeology conditions,formation lithology,geological structure,mining methods and intensity and mining exploitation and utilization status etc,besides that,they are analyzed in detail.The landform information and regional importance information are extracted and the geological environment evaluation units are divided based on MapGIS software.Based on MapGIS software,the grey correlation degree model,matter-element model and BP neural network model are adopted to conduct comprehensive evaluation and division of the geological environment of Gangxia rare earth mine respectively,the average geological evaluation results of the above models are obtained,the results show that:①the serious region area of geological environment of Gangxia rare earth mine is 1.222 1 km2,which is the 24.8% of the total area of the study area approximately,they are distributed in heap leaching mining region,tailings stacking region,in-situ leaching mining region with steep terrain slope;②the more serious region area of geological environment of Gangxia rare earth mine is 1.504 0 km2,which is the 30.6% of the total area of the study area approximately,they are distributed in the in-situ leaching mining region with slower terrain slope and bigger mining intensity;③the minor region area of geological environment of Gangxia rare earth mine is 2.190 7 km2,which is the 44.6% of the total area of the study area approximately,they area distributed in the in-situ leaching mining region with slower terrain slope and smaller mining intensity and virgin mining region.The above research results can provide reference for the geological environmental settlement and resources exploitation and utilization in the mining area.
