断面尺寸对巷道围岩稳定性影响数值模拟研究  

Numerical Simulation of Influence of Section Size on Stability of Roadway Surrounding Rock

作　　者：焦世雄 王文才[1] Jiao Shi-xiong;Wang Wen-cai(College of Mining,Inner Mongolia University of Science and Technology,Inner Mongolia Baotou 014010;Datong Coal Group Baidong Coal Industry Co.,LTD.,Shanxi Datong 037029)

机构地区：[1]内蒙古科技大学矿业学院,内蒙古包头014010 [2]同煤集团白洞煤业有限公司,山西大同037029

出　　处：《山东煤炭科技》2018年第12期2-4,共3页Shandong Coal Science and Technology

摘　　要：为研究巷道断面对围岩稳定性的影响,采用数值模拟手段分析不同断面尺寸巷道对围岩塑性区、应力场和围岩变形量的影响。由数值模拟结果可知:巷道断面由4.8m×3.5m刷大到11m×8.2m后,巷道两帮及底板岩体处于剪胀变形的范围扩大,顶板应力集中范围向两帮转移,巷道周围最大主应力集中程度增加14%,集中应力位置向深部稳定岩层转移。In order to study the influence of roadway section on surrounding rock stability,numerical simulation was used to analyze the influence of roadway with different section size on surrounding rock plastic zone,stress field and surrounding rock deformation.The results of numerical simulation show that after the roadway section is brushed from4.8m×3.5m to11m×8.2m,the rock mass on both sides of the roadway and the floor is in the range of dilatancy and deformation,the stress concentration range of the roof is shifted to both sides,the maximum principal stress concentration around the roadway increases by14%,and the position of the concentrated stress is shifted to the deep stable rock strata.

关 键 词：大断面 围岩 稳定 模拟 

分 类 号：TD325.1[矿业工程—矿井建设]