刀柱式采空区下方极近距离煤层开采方法研究

Study on Mining Technology in Ultra-close Multi-seams under Knife Pillar Gobs

针对王封煤矿8号、9号煤层间距只有0.75m,而且8号煤层采用刀柱开采的工程实际,提出了开采9号煤层时,采用斜交顺槽倾斜长壁的开采方法,实践证明此种方法安全、可靠、可行。

In Wangfeng Mine,the interval between seam 8 and seam 9 is 0.75m.Based on the construction practice of knife pillar mining in the seam 8,we propose to adopt inclined longwall mining in the seam 9.The practice has been proved safe,reliable,and feasible.