综放工作面进风巷水力压裂切顶卸压技术的研究与应用

Research and Application of Hydraulic Fracturing Top Relief Technique in Intake Tunnel of Fully-mechanized Mining Face

针对因综放工作面的悬顶面积大极易造成上下隅角瓦斯聚集而直接影响正常回采和安全生产的问题,通过水力压裂切顶泄压在81303工作面进风巷进行试验。试验表明:采用水力压裂切顶卸压技术,能够破坏顶板的完整性,实现顶板的有序垮落,消除了悬顶造成的隐患,为工作面的高效生产创造了条件。

In view of the problem that the gas accumulation in the upper and lower corners is easily caused by the large hanging area of the fully mechanized top coal caving face,which directly affects the normal mining and safety production,the hydraulic fracturing top pressure relief is tested in the inlet roadway of 81303 working face.The test results show that the hydraulic fracturing top relief technology can destroy the integrity of the roof,realize the orderly collapse of the roof,eliminate the hidden dangers caused by the hanging roof,and create conditions for the efficient production of the working face.