贺西矿沿空留巷综合支护方案设计及应用

Design and Application of Comprehensive Support Scheme for Gob Side Entry Retaining in Hexi Mine

针对贺西煤矿3302(2)工作面回风巷沿空留巷的顶板支护难题,综合运用现场调研、力学理论分析、矿压观测等研究手段,建立了沿空留巷围岩结构模型并分析围岩变形机理,基于沿空留巷的非对称围岩条件,设计出巷道初始支护方案及后期补强支护方案,成功进行了现场应用,巷道围岩变形量得到有效控制。

Aiming at the roof support problem of the return air roadway as the gob side entry in 3302(2) working face of Hexi coal mine, the surrounding rock structure model of gob side entry retaining is established and the deformation mechanism of surrounding rock is analyzed by comprehensively using the research methods of field investigation,mechanical theory analysis and ground pressure observation. Based on the asymmetric surrounding rock conditions of gob side entry retaining, the initial support scheme and later reinforcement support scheme of roadway are designed, and the field application is successful, The deformation of roadway surrounding rock is effectively controlled.