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通过对水力压裂机理的分析 ,进行煤体高压水力压裂注水参数研究试验 ,从而解决综采放顶煤二分层开采由于顶板压力减小造成的顶板滞后垮落、易产生大块等难题 ,取得了明显的效果
Through the analysis of the mechanism of hydraulic fracturing, the hydraulic pressure fracturing parameters research and test of high pressure coal seam is carried out to solve the problem that the roof lagging and caving caused by the decrease of roof pressure in double-layered mining of fully mechanized top coal caving and easy to produce large blocks and other problems , Achieved remarkable results