神东矿区无煤柱开采关键技术及应用研究

为了进一步提高煤炭资源回收率，减少矿井掘进队伍数量，降低巷道掘进进尺，提高掘进率，消除由于区段煤柱留设带来的采空区遗煤自燃隐患和集中压力影响，神东矿区研究应用无煤柱开采技术，通过理论设计和现场实践应用相结合的方法，持续优化施工工艺，研究得出了适合神东矿区开采条件的柔模混凝土和切顶卸压沿空留巷工艺，研发了沿空留巷液压支架、内嵌式锚索、恒阻锚索等关键创新设备，应用结果表明在神东矿区近水平、浅埋深条件下采用沿空留巷和沿空掘巷无煤柱开采工艺是完全可行的，有限提高了掘进效率，缓解了接续紧张，保证了顶板安全。

Research on the key technology and application of no pillar mining in Shendong Mining Area

In order to further improve the recovery rate of coal resources, reduce the number of driving teams in production mines, reduce the driving footage and driving rate of roadways, and eliminate the hidden danger of coal spontaneous combustion and the impact of concentrated pressure caused by the coal pillars in the goaf, Shendong mining area vigorously promotes the innovation and application of the mining technology without coal pillars, and innovates the soft mold concrete construction technology and the roof cutting and pressure relief construction technology The key innovative equipment, such as hydraulic support, embedded anchor cable and constant resistance anchor cable, has been researched and developed for the gob side entry retaining process. The various pillar free mining technology methods, such as gob side entry retaining, gob side entry digging and filling mining, have been improved, the efficiency of pillar free mining has been improved, significant economic benefits have been created, and good mining results have been achieved. In this paper, the pillar free mining in Shendong mining area has been studied The key technology and application of the system are introduced.