Due to the influence of the strip management of the bottom drainage roadway bthrough the layer, it is not easy to grasp the sealing depth of the borehole constructed at a later stage. The method of "plugging and sealing" was proposed, but with air leakage, combined with the extraction parameters of the existing sealing process, two plugging and one sealing process came out, the drainage effect was improved by 1.5 times and the sealing material was saved by 15.4%.
白明锴. 卸压区域顺层钻孔两堵一注定点封孔位置考察与应用[J]. 煤炭与化工, 2021, 44(2): 117-120.
Bai Mingkai. Investigation and application of fixed hole sealing of plugging and injection in unloading pressure area. CCI, 2021, 44(2): 117-120.
