215102工作面坚硬顶板水力压裂技术研究

Study on Hydraulic Fracturing Technology of Hard Roof in the 215102 Working Face

针对岳南煤业15^(#)煤层顶板岩层不易垮落的问题,提出采用水力压裂的方法解决,在回采巷道垂直走向布置两类水力压裂孔。通过现场试验,水力压裂后工作面初次来压、周期来压步距及来压峰值均有所降低,顶板岩层可以及时垮落。

In view of the problem that the 15^(#)coal seam roof strata of Yuenan Coal Industry is not easy to collapse,the method of hydraulic fracturing is proposed to solve the problem,and two kinds of hydraulic fracturing holes are arranged in the vertical direction of the mining roadway.Through the field test,after hydraulic fracturing,the initial pressure,periodic pressure step distance and peak pressure of the working face are all reduced,and the roof strata can collapse in time.