Study Of Method For Eco-environmental Effective Assessment In Coal Mining Areas

Eco-nvironmental effective assessment has been one of eco-environmental protection measures. But eco-environmental problems prominent increasingly, and its effective factors are complex in coal mining areas. Effective assessment methods are still under exploration, so analysis of eco-environmental problems in coal mining areas, establishment of universal eco-environmental effective assessment method and index system is of significance on eco-environment protection in coal mining areas.Based on comprehensive analysis of eco-environmental characteristics in coal mining areas in the thesis, the main effective factors for ecological damage which are caused by mining coal are given. They are ecological damage, ecological pollution, relocation, combined with ecological conditions, technical level, socio-economic indicators, through quality comprehensive evaluation means, the index system applied to eco-environmental effective assessment in coal mining areas is established which includes 3 layers 7 factors 28 assessment indexes. Effective degree that every assessment index causes is given after its qualitaty - quantitaty - non-quantitaty conversion. Using the hierarchy analysis method, every assessment index coefficience of specific areas is attained. Through establishing quality comprehensive evaluation model, the comprehensive quantitative analysis and assessment for eco-environmental effect in coal mining areas is taken.Using the established eco-environmental effective assessment model and index system, the eco-environmental effective assessment in New River coal mining areas is done. we draw out the correlations between 28 assessment indexes and eco-environmental function and the two greatest effective indexes on the eco-environment in the mining areas, which are surface subsidence, eco-environment return, and obtain the comprehensive ecological effective assessment valueΔE <0.1, which shows that eco-environment is hardly destructed after mining in the New River Mine, which is consistent with practice.