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在煤炭的开采过程中,不可避免地会遇到断层和褶皱构造,给煤矿的生产和安全带来很大影响。因为断层带岩石破碎,地表水和含水层中的水会沿着断层带涌入井下,断层破碎带又是瓦斯良好的通道,常常在此处积聚很多瓦斯;而褶皱构造,特别是在背斜的轴部,因岩层受到拉伸应力的作用,裂隙比较发育,若再遇到煤层顶板岩性为粉砂质泥岩、高岭石泥岩、条带细沙岩等,围岩的破碎情况将更为严重,易发生大块矸石冒落。当采掘工作面通过这些地质单元时,对顶板的稳定性、整体性将有较大影响。给采掘和支护工作带来很大的困扰,不仅要防水、防瓦
In the process of coal mining, fault and fold structures are inevitably encountered, which has a great impact on the production and safety of coal mines. Because of the fragmentation of the fault rock, surface water and water from the aquifer can be poured downhole along the fault zone, which in turn is a well-gasized channel, often accumulating much gas here; and fold structures, especially in anticlines Of the shaft, due to tensile stress by the role of the rock layer, the fracture is more developed, if you encounter the roof of the coal seam lithology silty mudstone, kaolinite mudstone, striped fine sandstone, broken rock will be more For serious, prone to large gangue collapse. When mining face through these geological units, the roof stability, integrity will have a greater impact. To dig and support work has brought a lot of trouble, not only to waterproof, anti-watt