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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。
Aiming at the problem of short pre-pumping time shortened due to the collapse of the coal body after the hydraulic piercing of the borehole drilled borehole, the hydraulic repairing test of the borehole through the borehole in the Yian Mine is carried out. While examining the remediation effect, the repairing process suitable for the coal mine of Yi’an Mine and the “three soft” coal seams was also investigated.