摘要
为解决区段巷道受多重采动应力影响,而引起的巷帮围岩锚固体整体外移等非线性大变形剧烈矿压问题,以鑫顺煤业15#煤为研究背景,采用现场调研、数值模拟、力学建模及现场测试的方法,分析厚煤层综放面的覆岩破断结构模型,并确定断裂线位置,求解出最小煤柱留设宽度,再利用FLAC3D模拟出区段煤柱的最优留设宽度。研究表明,最终确定15102轨道顺槽煤柱宽度可优化为22 m,为后续区段焊拉留设提供了理论及技术参考。
To address the problem of nonlinear large deformation and severe mine pressure caused by the overall external displacement of the anchor solid of the surrounding rock of the roadway side due to the influence of multiple mining dynamic stresses in the section roadway,taking the 15#coal of Xinshun Coal Industry as the research background,the methods of on-site investigation,numerical simulation,mechanical modeling and on-site testing were adopted to analyze the overburden fracture structure model of the fully mechanized face of thick coal seams and determine the position of the fracture line.The minimum coal pillar reserved width was solved,and by using FLAC3D the optimal reserved width of the coal pillar in the section was simulated.Research shows that the final width of the coal pillar in the 15102 track chute can be optimized to 22 m,providing theoretical and technical reference for the subsequent section coal width.
作者
王腾飞
WANG Tengfei(Zuoquan Xinshun Coal Industry,Shanxi Coal Import and Export Group)
出处
《现代矿业》
2025年第9期73-78,84,共7页
Modern Mining
关键词
煤柱宽度
巷道支护
数值模拟
断裂线
coal pillar width
roadway support
numerical simulation
fracture line
