金属矿山节理化岩体巷道锚杆支护加固机理模拟研究

摘要

论文通过数值模拟手段分析研究锚杆支护对金属矿山节理化岩体巷道的加固机理,研究了锚杆支护前后岩体结构应力场和位移场的变化规律,从而判断锚杆的加固效果.模拟结果表明:锚杆加固支护极大增强了节理巷道围岩自身的承载能力,改善了巷道围岩的受力情况,限制了巷道岩体围岩的变形量,为锚杆支护在节理岩体中的应用提供了理论支持.%The paper analyzes the reinforcement mechanism of jointed rock mass roadway in metal mine by means of numerical simulation analysis, study the variation of the rock structure stress field and displacement field before and after the bolt support, with these we can determine the reinforcing effect of anchors. Simulation results show that Bolt reinforced support greatly enhanced the carrying capacity of joints surrounding rock, improve the force conditions of the surrounding rock, limit the deformation of the surrounding rock with roadway rock. All of these provide theoretical support for Bolt support in jointed rock mass.