北祖煤业9211工作面覆岩导水裂隙带及离层发育规律研究
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摘要
为有效分析确定北祖煤业9211工作面覆岩导水裂隙及离层的发育规律,结合9211工作面的具体情况,建立覆岩导水裂隙带和覆岩离层模拟模型,对导水裂隙带及离层的发育规律进行模拟分析。结果表明,9211工作面导水裂隙带最大发育高度约为280 m,已与含水层导通,工作面充分采动时,覆岩含水层与下方岩层间存在较大的离层区域,离层空间成为补水区域,因此在9211工作面回采作业前,应加强覆岩含水层的探放水作业。
In order to effectively analyze and determine the development lawof the hydraulic fractures and separation of the overlying strata of the 9211 working face, the theoretical analysis and numerical simulation were combined to study the specific conditions of the 3101 working face to establish the overburden hydraulic fracture zone and overlying rock. The simulation model of the separation layer was used to simulate the development of the water-crushing fissure zone and the separation layer. The results showed that the maximum development height of the hydraulic fracture zone of the 9211 working face was about 280 m, which connected with the aquifer. When the working face was fully exploited, there was a large separation zone between the overburden aquifer and the lower rock. The separation space in the hydration area, the exploration and release operation of the overburden aquifer should be strengthened before the recovery mining of 9211 working face.
In order to effectively analyze and determine the development lawof the hydraulic fractures and separation of the overlying strata of the 9211 working face, the theoretical analysis and numerical simulation were combined to study the specific conditions of the 3101 working face to establish the overburden hydraulic fracture zone and overlying rock. The simulation model of the separation layer was used to simulate the development of the water-crushing fissure zone and the separation layer. The results showed that the maximum development height of the hydraulic fracture zone of the 9211 working face was about 280 m, which connected with the aquifer. When the working face was fully exploited, there was a large separation zone between the overburden aquifer and the lower rock. The separation space in the hydration area, the exploration and release operation of the overburden aquifer should be strengthened before the recovery mining of 9211 working face.
引文
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