龙固矿井巨厚表土层高应力工作面无煤柱开采技术研究

Study on the non-coal pillar mining technology of the high stress working face under the thick overburden in Long Gu mine

龙固井田地质条件复杂,采深大,表土层厚,以至于巷帮煤体侧向支承压力分布特征及沿空巷道变形机理不同于一般条件下的矿井。本文通过对沿空侧巷道煤柱留设布置方案进行研究,提高工作面开采安全性,提高回采效率,为合理开发煤炭资源,提高煤炭资源回采率奠定基础。

Longgu Mine Geological Conditions is complex, the mining depth is larger, the overburden is thicker, which causes that the abutment pressure distribution and deformation mechanism is different in the general conditions of mine roadway along gob. In this paper, through studying the layout scheme of coal pillar in the gob-side, improved the safety of working face, and the mining efficiency, which lay the foundation for the rational development of coal resources and improve the recovery rate of coal resources.