巷道锚网支护对矿震扰动的控制作用及其方案优化
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常州工学院 土木建筑工程学院

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江苏省高校大学生创新创业训练计划项目(202411055068Y);江苏省高等学校自然科学研究资助项目(20KJB440001)


Control effect and scheme optimization for bolting with wire mesh of roadway on mining microseismic disturbance
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School of Civil Engineering Architecture,Changzhou Institute of Technology,Changzhou

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    摘要:

    针对矿震扰动诱发锚固巷道冲击破坏的现状,利用FLAC2D数值模拟方法,研究了巷道锚网支护对矿震扰动下围岩变形的控制作用,分析了支护方案对控制效果的影响,提出了针对性的优化建议。结果表明:锚网支护下巷道围岩变形得到有效减小、围岩应力水平得以显著提升;矿震扰动下锚杆长度对于巷道变形的控制效果存在最优值;加密支护可以有效控制巷道围岩变形;金属网能够使得巷道表面围岩受力更均匀,防止围岩变形突增;通过优化支护结构参数、改善支护布置方案和弱化矿震扰动影响可实现对巷道锚网支护结构的抗冲防控。

    Abstract:

    In view of the present situation of anchor roadway rockbursts induced by mining microseismic disturbance, the control effect of bolting with wire mesh on surrounding rock deformation under dynamic disturbance was studied, using the FLAC2D numerical simulation method. The influence of support scheme on control effect was analyzed, and corresponding optimization suggestions were proposed. The results show that the deformations of roadway surrounding rock are effectively reduced and the stress levels are significantly improved under bolting with wire mesh. There is an optimal value for the control effect of bolt length on deformation under mining microseismic disturbance. Encrypting the bolt supporting can effectively control the deformation of roadway surrounding rock. The stress on surrounding rock of roadway surface can be more uniform by using the metal mesh, preventing the sudden increase of deformation. The anti-shock measures of bolt supporting structure of roadway can be implemented by optimizing the parameters of support structure, improving the support layout plan, and weakening the mining microseismic disturbance.

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  • 收稿日期:2025-04-23
  • 最后修改日期:2025-05-05
  • 录用日期:2025-05-06
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