Evaluation of roof water filling intensity zoning for coal seam of Dongsheng coalfield based on AHP
Water filling intensity of coal seam roof is one of the basic indexes for water hazard prevention and control in min-ing areas.In order to reveal the overall law of the water filling intensity of coal seam roof in Dongsheng coalfield,each min-ing area in the coalfield were selected as the research area,and the main influential factor of the water filling intensity was the thickness of the fractured zone in each aquifer of the coal seam roof.The weights were determined using Analytic Hierar-chy Process(AHP),and the spatial composite superposition of GIS was applied to evaluate the water filling intensity in dif-ferent zones.The results indicate that the overall performance pattern of water filling intensity gradually increases with the increase of coal seam burial depth from northeast to southwest in the coalfield.The zoning results of water filling intensity obtained through Analytic Hierarchy Process are roughly the same as the distribution results of water inflow in various min-ing areas of the coalfield.Our achievement can provide regional reference for the prevention and control of water disasters in Dongsheng coalfield mines.
万方数据
维普
