摘要
为控制21101工作面底鼓强烈,巷道变形量大的问题,根据巷道变形破坏特征对其破坏原因进行分析,利用数值模拟手段提出底反拱+强化锚索控底技术方案,并运用于工程实践,研究结果表明:21101工作面巷道底鼓类型为挤压流动型底鼓,采用帮底互控支护技术提高了支护—围岩承载结构的稳定性和承载能力,保证巷道的正常使用。
For the control of 21101 working face the bottom drum is strong, the problem of large roadway deformation is analyzed according to the characteristics of deformation and failure of roadway, and the technical scheme of bottom reverse arch ＋ reinforced anchor cable controlled by numerical simulation is put forward, and applied in engineering practice, the results show that： the bottom drum type of roadway in 21101 face is extruded flow type bottom drum., the support technology is used to improve the stability and bearing capacity of support-surrounding rock bearing structure and ensure the normal use of roadway.
出处
《煤矿现代化》
2018年第2期20-22,共3页
Coal Mine Modernization
关键词
工作面
底鼓
帮底互控支护
变形观测
数值模拟
working face
Bottom drum
bottom Mutual control support
Deformation observation
Numerical simulation
