焦作矿区山西组二1煤层构造煤发育,据井下观测和测井曲线识别,二1煤层中I、Ⅱ类构造煤分布于煤层的下部,Ⅲ、Ⅳ类构造煤分布于煤层上部和顶部.通过分析煤岩层的力学性质、煤岩水敏性以及水文地质条件对瓦斯抽采水力压裂工艺的影响,认为二1煤层与底板岩石力学性质差异不大且结合紧密,压裂缝易沟通二者；煤岩水敏曲线表明水敏性弱；通过计算得到的底板安全隔水层厚度小于实际隔水层的厚度,安全水头压力值大于实际承受的水头压力值,基于此地质条件建立了以顶板+Ⅲ类+Ⅳ类构造、I类+Ⅱ类构造煤、I类+Ⅱ类构造煤+底板的三种压裂抽采储层类型.%The coal seam Ⅲ in the Shared Formation, Jiaozuo mining area has well developed tectonically deformed coal. According to underground observation and logging traces identification, tectonically deformed coal types I and II are distributed in lower part of the coal seam, while types Ⅲ and IV in upper and top parts. Through analysis of coal and rock mechanical properties, water sensitivity and hydrogeological condition impact on the gas drainage hydraulic fracturing, considered that the difference between mechanical properties of coal Ⅲ and floor rock is not large, but also closely integrated, thus their fractured fissures can be easily linked; the coal and rock water sensibility curves have demonstrated that their water sensibilities are weak. The estimated floor safe thickness of aquifuge is less than actual aquifuge thickness, safe water head pressure larger than actual bearing pressure. Thus three fracturing drainage reservoir types of roof + type III + type IV deformed coals, type I + type II deformed coals and type I + type II deformed coals + floor have been established.
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