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针对西部某矿松软低透煤层,以含瓦斯煤层水力致裂裂隙内流场为研究对象,基于现场试验,结合理论分析等方法研究了低透气性煤层水力致裂裂隙内流场驱替机理。结果表明:水力压裂技术能够有效提高煤岩体的透气性及钻孔瓦斯抽采效果。
Aimed at the soft and low permeability coal seam in a western part of China, the flow field in the hydraulic fracturing fissure in the coal seam containing gas was studied. Based on the field test and the theoretical analysis, the displacement mechanism of flow field in a hydraulic fracture with low permeability was studied. The results show that the hydraulic fracturing technology can effectively improve the permeability of coal and rock and the effect of gas drainage in boreholes.