摘要
选取受动压影响的祁南煤矿82采区五中车场巷道为试验巷道,构建了不等压条件下巷道破坏的力学模型,得出了巷道内表面的位移解;其次根据数值模拟结果,选取锚网索+锚注联合支护方式对82采区五中车场巷道进行支护,并进行了现场观测.结果表明,动压使巷道围岩深部应力向更深处转移,扩大了巷道围岩的塑性屈服范围,加大了巷道围岩变形,严重影响了巷道稳定;锚喷索+锚注联合支护方案能明显提高破碎围岩的整体强度,改善岩体的性质,更好地控制了巷道的变形.
Selecting the dynamic-pressured fifth middle yard roadway of 82 coal mining area in Qinan coal mine as the test roadway,we have performed the theoretical calculation and numerical simulation of the roadway,obtained displacement solution to the surface of roadway.We first construct the model of failure roadway under the condition of unequal pressure.According to the simulation results,selecting the cable anchor and bolt-grouting combined support as the support method supported the fifth middle yard roadway of 82 coal mining area for field observation.Numerical simulation and actual roadway observation show that the dynamic pressure enable the stress in deep surrounding rock transfer to the deep area,which increases the deformation of surrounding rocks and seriously affects the stability of the roadway;cable anchor and bolt-grouting combined support can improve the overall strength of the surrounding rock evidently to improve the mechanical property of the rock and can control the deformation of roadway.
出处
《采矿与安全工程学报》
EI
北大核心
2010年第4期537-542,共6页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(50874103)
江苏省自然科学基金项目(BK2008135)
国家重点基础研究发展计划(973)项目(2010CB202210)
中国矿业大学青年科研基金项目(0K061024)
江苏省"333工程"项目
江苏省"六大高峰人才"项目
关键词
动压软岩巷道
理论计算
锚注支护
数值模拟
soft rock roadway affected by dynamic pressure
theoretical calculation
bolt-grouting support
numerical simulation
作者简介
作者简介：唐芙蓉（1972-），女，江苏省响水县人，讲师，博士，从事固体力学方面的研究．E-mail：jcran@curet．edu．cn.Tel：0516-83883149
