山东煤炭科技2024，Vol.42Issue(12)：29-34,6.DOI:10.3969/j.issn.1005-2801.2024.12.007
哈密矿区弱胶结巷道锚杆(索)动载拉伸破坏预防方法
Preventive Method for Dynamic Load Tensile Failure of Anchor Rod(Cable)in Weakly Cemented Roadway of Hami Mining Area
摘要
Abstract
Aiming at the control problem of roadway surrounding rock with weak cementation and complex conditions in Hami Mining Area,by methods such as theoretical modeling and mechanical analysis and so on,the types of roadway anchor rod(cable)tensile failure and their prediction and control method of dynamic load tensile failure of anchor rod(cable)are proposed.The research shows that there are two main tensile failure types for roadway anchor rod(cable)with weak cementation and complex conditions:high stress"static load"and mining"dynamic-static load";Establish a local structural spatial model of"support-surrounding rock",obtain the roadway rock mass is affected by dynamic vibration velocity and the anchor rod dynamic load impact force,and determine the judging basis for anchor rod tensile failure under"dynamic-static load"condition;Considering the action principle of the"support-surrounding rock"in the roadway and the two working states of limited deformation and given deformation,a control strategy for anchor rod tensile fracture is proposed with the core of"increasing the diameter of the anchor rod or increasing the support density,controlling the reasonable timing and strength of secondary support".The research provides theory and methods for quantitative optimization design of roadway support parameters.关键词
巷道/锚杆(索)/拉伸破坏/控制方法Key words
roadway/anchor rod(cable)/tensile failure/control method分类
矿业与冶金引用本文复制引用
吴晓军..哈密矿区弱胶结巷道锚杆(索)动载拉伸破坏预防方法[J].山东煤炭科技,2024,42(12):29-34,6.基金项目
国投哈密能源开发有限责任公司项目(ZMXJ-HMNY-FY24JSGLB0003) （ZMXJ-HMNY-FY24JSGLB0003）
