National Nature Science Foundation of China(50534070);International Science and Technology Cooperation and Communion Key Project of Ministry Science and Technology of China(2005DFA61030);Natural Science Foundation of Henan Province(200510460014);Coal Mine Gas and Fire Prevention and Control Key Laboratory Foundation of Henan Province(HKLGF200708)
Measured to control serious coal-gas outburst in coal seam were analyzed by theory and experimented in test site.A new technique to distress the coal-bed and drain methane,called hydraulic slotting,was described in de...