Aquifer characteristics and water prevention and control in Xiaodonggou Coal Mine
In light of long deserted time of mined-out mines and their roadways,different level of accumulative water in goaf,and existing burnt-rock water in Xiaodonggou mining area,the aquifer characteristics and water control and prevention are analyzed.This paper makes use of the powerful functions of MAPGIS,such as data storage,spatial data processing and anal-ysis to output the result map and assess the water enrichment of the aquifer in the study area.It is proposed that the preven-tion and control of accumulated water in old goaf should be strengthened in normal mining,and enough water-prevention coal pillars should be retained.Initial analysis shows that the water inrush danger zones of B6 coal seam are mainly distributed in the past working face area,and after the future mining face advancing to the initial mining face area,most part of the area is water inrush danger zone.We suggest that the necessary water prevention and control measures should be taken on the min-ing face when encountering the largest accumulated water,the deep old goaf and the bottom of abandoned roadway.
mine water prevention and controlwater enrichmentgoafpermeability coefficientbrittle-plastic ratioapparent resistivity
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