1301综采面回风巷过断层破碎带支护技术研究

Study on Support Technology of Return Air Roadway Passing Through Fault Fracture Zone in 1301 Fully Mechanized Face

玉溪煤矿1301综采工作面回风巷在掘进过程中揭露断层破碎带,巷道变形明显,通过采用现场围岩原位实测的方法对巷道破坏严重的原因进行综合分析,在此基础上提出了加大支护强度+注浆+喷射混凝土的联合支护方式。现场监测结果表明,在该优化方案支护下巷道围岩变形较小,满足矿井的正常安全生产。

In the process of excavation,the return air roadway of 1301 fully mechanized coal face in Yuxi Coal Mine exposed the fault fracture zone,and the roadway deformation was obvious.Through the method of in-situ measurement of the surrounding rock,the causes of the roadway damage were comprehensively analyzed.On this basis,the combined support mode of increasing the support strength+grouting+shotcreting was put forward.The field monitoring results show that the surrounding rock deformation of the roadway under the support of the optimization scheme is small,which meets the normal safety production of the mine.