穿层钻孔水力修复技术在义安矿应用研究

Research of Stress Distribution and Drilling Optimization of Hydraulic Punching in Floor Roadway

针对穿层钻孔水力冲孔后,由于煤体垮塌将抽放花管掩埋导致的有效预抽时间偏短问题,通过在义安矿进行穿层钻孔水力修复试验。在考察修复效果的同时还对适合义安井田"三软"煤层的修复顺序、修复压力等修复工艺进行了考察。

For wear layer borehole hydraulic punching due to coal collapse would draw flowers tube buried leads to an effective pre pumping time is too short, the in Yi＇ an mine wear layer borehole hydraulic repair test, test in the study of repairing effect at the same time also for Yi＇an mine ＂Three Soft＂ coal seam repair order, repair pressure repair process were investigated.