针对二次采动影响下区段煤柱破坏严重巷道难以控制的难题，以小纪汗煤矿11215工作面为工程背景，采用理论分析和数值模拟方法，分析了该工作面面临的二次采动下覆岩空间结构经历“O”形变化为“厂”形的接替过程，揭示了二次采动影响下巷道围岩的破坏机制，提出了差异化巷道围岩支护技术，并采用现场监测方法验证措施的可靠性。

研究结果表明：①采动影响下煤柱变形破坏的控制是确保巷道断面快速掘进和安全回采的重要保障;②应力叠加与高强度开采的耦合作用、巷道断面与支护参数匹配不合理及回采推进速度的不协调是导致煤柱失稳的主要因素；③采用长锚索、高预应力锚索+钢带联合差异化控制，有效控制了11213工作面剩余段围岩的强烈变形，基本满足了巷道的使用要求。但由于采动应力的影响，回采过程中回采帮侧顶板下沉0.3 m，煤柱帮侧顶板下沉0.15 m，顶板最大下沉量约0.42 m，但采取措施巷道围岩完整性较好，不会影响运输及工作面回采，该技术也为类似工作面安全开采提供了有益参考。

In view of the difficulty of controlling the roadway with severe coal pillar destruction under the influence of secondary mining, the No.11315 working face of Xiaojihan coal mine was taken as the engineering background, and the secondary mining faced by the working face was analyzed by using theoretical analysis and numerical simulation methods. The spatial structure of the overlying rock underwent the succession process of “O” shape changing to “厂” shape, which revealed the destruction mechanism of the surrounding rock affected by secondary mining, and proposed the differentiated surrounding rock support technology of the roadway, and adopted on-site monitoring and the reliability of measures was verified by field monitoring. The results show that: ①The control of coal pillar deformation and destruction under the influence of mining is an important guarantee to ensure the rapid excavation and safe recovery of roadway section. ②The coupling effect of stress superposition and high-strength mining, the unreasonable matching of roadway section and supporting parameters, and the incongruity of mining advance speed are the main factors leading to the instability of coal pillars. ③The strong deformation of the surrounding rock in the remaining section of No.11213 working face is effectively controlled by the combination of long anchor cable, high pre-stressed anchor cable and steel belt, which basically meets the use requirements of the roadway. However, due to the influence of mining stress, the roof on the side of the mining side sinks 0.3 m, the roof on the side of the coal pillar sinks 0.15 m, and the maximum roof subsidence is about 0.42 m. But the integrity of the surrounding rock of the roadway is good, which will not affect the transportation and the mining of the working face. This technology also provides a useful reference for the safe mining of similar working faces.