摘要
正令煤业1214工作面巷道埋深大,帮部煤层软弱,帮部变形量大。综合分析地质条件和巷道原支护效果后,基于锚杆、锚索协同支护理论,提出优化支护方案;并以数值模拟为手段,结合现场经验,对比研究各优化方案的优劣,得到最佳支护形式,使锚杆、锚索在预应力和布置形式上,达到协同,有利于提高支护结构的整体性、协同性,有效控制巷道变形。
In the Zhengling Coal Mine,the roadway in the 1214 working face is buried deeply,and the strength of the side coal seam is weak,which causes a large amount of deformation at the side coal seam.The geological conditions and the original support results were comprehensively analyzed,and an optimized plan was proposed based on the bolt-cable synergetic support theory.Through numerical simulation methods and combined with construction experience,the pros and cons of optimization plans were compared,and the best support plan was obtained.This plan makes the bolt and cable synergetic in the form of pre-stress and arrangement,which is beneficial to improve the integrity and coordination of the supporting structure,and the roadway deformation is effectively controlled.
作者
王永文
胡迎春
张书鹏
单仁亮
WANG Yongwen;HU Yingchun;ZHANG Shupeng;SHAN Renliang(Shanxi Fenxi Mining Industry Group Corporation Ltd.,Jiexiu 032000,China;School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《建井技术》
2021年第1期34-40,44,共8页
Mine Construction Technology
基金
国家自然科学基金项目(51474218)。
关键词
工作面巷道
锚杆
锚索
协同支护
数值模拟
working face roadway
bolt
anchor cable
synergetic support
numerical simulation
