侧向支承应力作用下6.0 m小煤柱巷道加固技术研究

为了解决塔山煤矿三盘区6.0m小煤柱巷道围岩稳定性控制难题，利用数值模拟与现场实测研究相结合的方案，对8311工作面回采过程中煤柱应力的变化规律和侧向支承应力作用下小煤柱巷道加固技术进行了研究，提出了对穿锚索加固小煤柱配合顶板支护方案，有效的降低了6.0m小煤柱巷道的围岩控制技术难度。数值模拟研究表明，随工作面与测站相对位置变化，小煤柱先后承受超前支承应力与侧向支承应力作用，煤柱应力逐渐增大。通过现场工业性试验，采用对穿锚索加固小煤柱配合顶板支护方案后，巷道中央顶板的最大收敛量为241 mm，两帮移进量最大为521 mm，能够满足巷道服务期间的安全生产要求。研究结果表明，采用对穿锚索加固小煤柱配合顶板支护方案，解决侧向支撑压力作用下小煤柱巷道的维护难度是可行的。

Study on Stress Distribution and Reinforcement Technology of 6.0m Coal Pillar Roadway

Aiming at the problems that the surrounding rock of 6.0m small coal pillar roadway in the third panel area of Tashan Coal Mine of Tongmei Group is complicated and difficult to control the stability of surrounding rock, the FLAC3D numerical calculation and analysis method is used to simulate and study the change of coal pillar stress during the mining process of 8311 working face Based on the support scheme for small coal pillars reinforced with roofing cables and roof support, the results of on-site monitoring and analysis show that the surrounding rock control effect of this support scheme is good, which can meet the safety production requirements of the roadway during the service period.