Liu Xuesheng, Zhang Yu, Fan Deyuan, Zhao Yongqiang, Gao Yudong, Pei Hongxi, Shi Zhihan
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
State Key Laboratory of Disaster Prevention and Ecology Protection in Open-pit Coal Mines, Shandong University of Science and Technology, Qingdao, 266590, China.
Sci Rep. 2025 Apr 30;15(1):15173. doi: 10.1038/s41598-025-98452-8.
The energy evolution of surrounding rock under mining influence has a crucial impact on its stability. Taking the I010402 transportation roadway of Shuangma as the engineering background, the energy evolution law of surrounding rock in mining roadway was obtained by FLAC3D. The energy influence range and value of elastic energy and dissipated energy at both sides of the roadway gradually increase with the mining. The energy value at the face end reaches its maximum, with the dissipated energy release area forming a butterfly-shaped distribution and the elastic energy accumulation area forming a trapezoidal accumulation pattern. Subsequently, the surrounding rock of the roadway is divided into energy consumption zone, energy supply zone, and unaffected zone based on the range of two energies. Then, the types of surrounding rock deformation and failure are identified from two aspects: energy level K and energy release rate V. When K ≥ 1 and V ≥ 1, the surrounding rock of the roadway undergoes impact instability; when V < 1, the surrounding rock of the roadway undergoes large deformation failure. Furthermore, "Multi-Level pressure yielding" and "Relief-Support" control technology are proposed for the two types of failure, and field verification has been carried out in Shuangma and Xinjulong.
采动影响下巷道围岩能量演化对其稳定性具有关键影响。以双马I010402运输巷为工程背景，通过FLAC3D得出回采巷道围岩能量演化规律。巷道两侧的弹性能和耗散能的能量影响范围及数值随开采逐渐增大。工作面端头处能量值最大，耗散能释放区域呈蝶形分布，弹性能积聚区域呈梯形积聚形态。随后，根据两种能量的范围将巷道围岩划分为能量消耗区、能量供应区和未受影响区。然后，从能量水平K和能量释放率V两个方面识别巷道围岩变形破坏类型。当K≥1且V≥1时，巷道围岩发生冲击失稳；当V＜1时，巷道围岩发生大变形破坏。此外，针对这两种破坏提出了“多级卸压让压”和“卸压-支护”控制技术，并在双马和新巨龙进行了现场验证。
