南关煤业受动压影响巷道钢管混凝土支架支护应用研究

南关煤业西翼轨道巷、西翼皮带巷和西翼回风巷属于典型的受动压影响的大变形难维护的巷道，为保证煤矿的安全生产，巷道开挖后处于频繁返修的状态，需要投入大量的人力物力。为解决南关煤业三条大巷存在的支护问题，在分析巷道围岩条件、原岩应力和原有支护变形特征的基础上，提出了基于钢管混凝土支架的复合支护方案，在3209工作面采动影响区域进行了现场对比试验。试验结果表明，与其他加固方式相比，钢管混凝土支架支护段围岩变形得到了有效控制，所设计的钢管混凝土支架支护方案适用于南关煤业动压巷道支护。

Study on application of concrete filled steel tube support in Nanguan Coal Mine roadway affected by dynamic pressure

Nanguan Coal Mine West Wing track Lane, West Wing belt lane and West Wing return air roadway are typical large deformation and difficult to maintain roadway under dynamic pressure. In order to ensure the safety production of coal mine, roadway excavation is in a state of frequent repair, which requires a lot of manpower and material resources for repair. In order to solve the support problems of three main roadways in Nanguan coal mine, based on the analysis of surrounding rock conditions, original rock stress and deformation characteristics of original support, a composite support scheme based on concrete-filled steel tube support is proposed. Field comparative test is carried out in the mining affected area by 3209 working face. The test results show that, compared with other reinforcement methods, the deformation of surrounding rock in the support section of concrete-filled steel tube support has been effectively controlled, and the designed support scheme of concrete-filled steel tube support is suitable for dynamic pressure roadway support in Nanguan coal mine.