Kuqa County Yushuling Coal Mine Co., Ltd.
College of Energy Science and Engineering,Henan Polytechnic University

为解决沿空巷道窄煤柱围岩控制难题，综合应用了理论分析、数值模拟、工程应用等方法，揭示了沿空巷道窄煤柱变形失稳机理，当煤柱尺寸较小时，煤柱内部煤体近乎进入残余破坏阶段，采动应力大部分转移至开采帮侧煤体内部，当护巷煤柱尺寸较大时，护巷煤柱表现出良好的承载性能，导致转移至开采帮侧煤壁内的采动应力有所减小，基于此，确定110505轨道顺槽采用切顶护巷协同支护技术，现场应用后，试验顺槽围岩整体可控，实现了沿空巷道110505轨道顺槽的稳定控制。

In order to solve the problem of surrounding rock control of narrow coal pillar in gob-side entry, the methods of theoretical analysis, numerical simulation and engineering application were comprehensively applied to reveal the deformation and instability mechanism of narrow coal pillar in gob-side entry. When the size of coal pillar was small, most of the coal body inside the coal pillar almost entered the residual failure stage, and most of the mining stress was transferred to the coal inside the mining side. When the size of coal pillar was large, the coal pillar of roadway protection showed good bearing performance, which leaded to the decrease of mining stress transferred to the coal wall of mining side. Based on this, it was determined that the cooperative support technology of roof cutting and roadway protection was adopted in No. 110505 track crossheading. After field application, the surrounding rock of the test crossheading was controllable as a whole. Therefore, the stability control of No.110505 track crossheading along goaf roadway was realized.

李亚锋1，徐亚龙2. 沿空巷道窄煤柱变形失稳机理与切顶护巷协同技术研究[J]. 煤炭与化工, 2024, 47(1): 22-25.

Li Yafeng1, Xu Yalong2. Research on deformation instability mechanism of narrow coal pillar in gob-side entry and collaborative technology of roof cutting and roadway protection. CCI, 2024, 47(1): 22-25.