In order to solve the problem of blocking the extraction pipe after adopting hydraulic punching anti-reflection technology of loose coal seam, the construction process of penetration drilling in No.1 Mine of Yungaishan Mine was further optimized by using a combination of partial hydraulic punching and partial non-punching method, firstly, the permeability of the drilling was increased, secondly, blocking the flower pipe after sealing the drilling was avoided. The test showed that this method can improve the extraction concentration of the penetration borehole and extend the extraction time of the borehole, and the effect was more obvious for loose coal seam.
路东升. 穿层钻孔水力冲孔工艺优化与实践[J]. 煤炭与化工, 2021, 44(2): 105-108.
Lu Dongsheng. Optimization and practice of hydraulic punching process for drilling through layers. CCI, 2021, 44(2): 105-108.
