寺家庄煤矿15106工作面沿空巷道支护方案优化分析与应用  

Optimization analysis and application of roadway support plan along goaf in 15106 working face of Sijiazhuang Coal Mine

作　　者：郝晓东 HAO Xiaodong(Sijiazhuang Company,Lu'an Chemical Group,Jinzhong 045300,China)

机构地区：[1]潞安化工集团寺家庄公司,山西晋中045300

出　　处：《煤矿现代化》2022年第2期115-118,共4页Coal Mine Modernization

摘　　要：为解决15106工作回风巷原有支护下围岩变形量大的问题,采用现场钻孔窥视的方式进行基本顶破断位置的窥视分析,基于窥视结果得出基本顶在实体煤帮上方破断,基本顶在破断位置下方形成高应力区,造成实体煤帮变形量大,进一步通过模拟顶板破断后围岩应力分布确定优化方案需加强两帮支护强度,优化支护采用非对称支护方案,结合巷道变形特征进行非对称支护方案进行设计,并在支护实施后进行围岩变形观测分析。结果表明:非对称支护方案实施后,有效解决了两帮变形差异大的问题,围岩变形量大幅降低,保障了围岩的稳定。In order to solve the problem of large deformation of the surrounding rock under the original support of the 15106 working return air tunnel,the peep analysis of the basic roof breaking position was carried out by the method of on-site drilling and peeking.The basic roof forms a high-stress area under the broken position,resulting in large deformation of the solid coal bank.Further,by simulating the stress distribution of the surrounding rock after the roof is broken,the optimization plan needs to be strengthened to strengthen the support strength of the two banks,and the asymmetric support plan is adopted for the optimization support.The asymmetric support scheme is designed according to the deformation characteristics of the roadway,and the surrounding rock deformation observation and analysis are carried out after the support is implemented.The results show that after the implementation of the asymmetric support scheme,the problem of large deformation differences between the two sides is effectively solved,the deformation of the surrounding rock is greatly reduced,and the stability of the surrounding rock is ensured.

关 键 词：沿空巷道 基本顶 非对称支护 围岩变形 

分 类 号：TD353[矿业工程—矿井建设]