Based on the large input but little return in the end-located drainage roadway crossing layers drilling of Sijiazhuang Mine, with low drilling content, with long drainage, mall quantity and poor drainage effect, the drilling sealing technology was analyzed, protecting coal instead of rock in end-located drainage roadway technology was studied to improve the sealing rate and reduce the cost.
张永春. 寺家庄矿以岩保煤底抽巷穿层钻孔封孔工艺研究[J]. 煤炭与化工, 2018, 41(3): 45-49.
Zhang Yongchun. Study on protecting coal instead of rock in end-located drainage roadway crossing layers drilling and sealing technology of Sijiazhuang Mine. CCI, 2018, 41(3): 45-49.
