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巷道稳定性控制技术研究是深井软岩支护研究的重点,寻求安全、经济、快速的深井巷道支护技术对于矿山安全生产具有重要意义。龙固煤矿井底车场交岔点和北区回风大巷所处岩层应力状态复杂,为保证其稳定性进行了巷道二次支护,一次支护采用锚、网、索、喷支护。二次支护结构为锚、注、喷支护,矿压监测结果表明,二次支护结构和围岩提高了整体承载力并逐步趋向于稳定,巷道表面位移变形量和收敛速率逐渐趋于稳定,锚杆受力变化曲线斜率很小,巷道稳定性控制达到预期结果。
Research on roadway stability control technology is the focus of research on soft rock support in deep wells. It is of great significance to seek safe, economical and fast support technology for deep mine roadway for mine safety production. The stress state of the rock formation at the intersection of Longgu coal mine floor and the return wind lanes in the north is complex, and the secondary support of roadway is carried out to ensure its stability. The primary support is anchored, netted, cabled and sprayed. The results show that the secondary support structure and the surrounding rock increase the overall bearing capacity and gradually tend to be stable. The displacement and convergence rate of the surface of the roadway tends to gradually decrease Stability, the slope of the anchor force variation curve is very small, and the stability control of the roadway achieves the expected result.