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《Coal Mining Technology》 2009-04
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Technology Practice of Mining over Floor Limestone with Pressurized Water

WU Yu-hua1,ZHAO Kai-quan1,SUN Ben-kui2 (1.Wanbei Coal & Power Group Co.,Ltd,Suzhou 234000,China;2.Qianyingzi Colliery,Wanbei Coal & Power Group,Suzhou 234116,China)  
For occurrence of confined water in floor limestone of 6 Coal Seam in Hengyuan Mine,this paper put forward applying additional geological exploration,optimization design for mining section and mining face,face exploration and test,local reinforcement with grunting into floor,pressure-relief by dewatering,changing floor aquifer by grunting from surface station to forming a set of water prevention methods including exploration,prediction,underground geophysical prospecting,evaluation,measure,inspection,monitoring and prevention.The application of these methods has eliminated effectively floor flood.
【CateGory Index】: TD745
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