鑫顺煤业15号煤煤仓上部卸载硐室围岩加固技术研究

Study on reinforcement technology of surrounding rock of unloading chamber in No.15 coal bunker of Xinshun Coal Industry

为保证15号煤煤仓上部卸载硐室围岩的稳定,通过对卸载硐室的地质条件进行具体分析,并对围岩的变形量和塑性区分布进行数值模拟,决定采用"全断面长锚索+关键部位组合锚索+破碎带注浆"支护技术,结合卸载硐室的支护原理对卸载硐室断面1-1的加固方案进行具体设计,并对支护后的巷道进行矿压监测。结果表明,加固方案实施后,顶底板的最大移近量为94 mm,两帮最大移近量为55 mm,锚索受力均匀,保证了巷道围岩的稳定。

In order to ensure the stability of the surrounding rock of the unloading chamber in the upper part of No.15 coal bunker, the geological conditions of the unloading chamber were analyzed in detail, and the deformation and plastic zone distribution of the surrounding rock were numerically simulated. The long anchor cable + key part combination anchor cable+ fracture zone grouting" support technology, combined with the support principle of unloading chamber, the concrete design of the unloading chamber section 1-1 was designed, and the roadway after support was carried out. The results showed that after the reinforcement scheme,the maximum displacement of the top and bottom plates was 94 mm, the maximum displacement of the two sides was 55 mm, and the anchor cable was evenly stressed, which ensured the stability of the surrounding rock of the roadway.