Study On Evaluation Index System Of Comprehensive Benefits Of Water And Soil Conservation In Coal Mining Area

Through the investigation of Binchang mining area in shaan, combine withcomprehensive benefits of water and soil conservation evaluation theory, and base on thecharacteristics of soil erosion in coal mine area, we establish the comprehensive benefits ofwater and soil conservation evaluation system in coal mining area. Then study on the changelaw of comprehensive benefits of water and soil conservation in2006-2010and presentsituation of comprehensive benefits of water and soil conservation in2010. The main resultsare as follows:(1) Analyze corresponding theory of soil and water loss in coal mining area.The presentsituation, the causes, characteristics and the harm of soil erosion and the prevention measuresof soil and water conservation measures coal mining area are summarized.(2)Construct evaluation index system and select the evaluation method of comprehensivebenefits of water and soil conservation in coal mining area. From the potential force, stress,influence, state and response, DPSIR model are applied to select primary25evaluation indexof comprehensive benefits of water and soil conservation in coal mining area. Select the indexby using grey relation degree, and then construct evaluation index system and FuzzyComprehensive Evaluation model.(3) AHP and Entropy Weight Method are adopted to determine the weight of a evaluationfactors. Secondary Fuzzy Comprehensive Evaluation method are used to evaluate thecomprehensive benefits of water and soil conservation in Binchang mining area in2010. Thepresent situation indicates that the membership degree of comprehensive benefits of water andsoil conservation in Binchang mining area belongs to LevelⅡ(good), is0.5563. Thecontribution value of social benefits and economic benefits is bigger than ecological benefits,which is beneficial to improve comprehensive benefits of water and soil conservation, butecological benefits restrict it.(4) Make trend evaluation on comprehensive benefits of water and soil conservation inBinchang mining area in2006-2010. According to that, we know the overall situation ofcomprehensive benefits of water and soil conservation in Binchang mining area increased yearby year, its comprehensive benefits rise from the general standard to good. Through theanalysis of the three benefit we find that the comprehensive benefits of water and soilconservation in Binchang mining area increase gradually, achieve the medium-sized standard， soil and water conservation system are in benign cycle, ecological construction still need to befurther strengthened.