锚索密集支护在深井大断面交叉点的应用  

Application of intensive supporting with anchor cable in large cross section intersection of deep mine

作　　者：刘文[1] LIU Wen(Shandong Energy Xinwen Mining Group Material Supply and Marketing Co.,Ltd.,Xintai,Shandong,271233)

机构地区：[1]山东能源新汶矿业集团物资供销有限责任公司,山东新泰271233

出　　处：《煤炭科技》2020年第5期112-115,共4页Coal Science & Technology Magazine

摘　　要：密集锚索及其与锚杆支护间的协同作用,能形成更大范围、更高强度的组合拱,大幅提高了深井大断面交岔点巷道的围岩整体性和支护强度,减小上覆岩层对交岔点两帮和牛鼻子的垂直压力,对交岔点围岩控制起着关键作用;对拉锚杆、对拉锚索改善了牛鼻子岩柱的结构和强度,保证了岩柱对交岔点顶板的支撑和减垮作用;墙基、底角锚杆是简便、有效的底鼓控制措施。现场应用效果表明,基于密集锚索的支护技术围岩控制效果理想,能较好地解决深井大断面交岔点的支护问题。The intensive anchor cable and its synergistic effect with bolt supporting can form a larger range and higher strength composite arch,greatly improve the integrity and supporting strength of surrounding rock of large cross-section intersection roadway in deep mine,reduce the vertical pressure of overlying strata on the two sides of the intersection and the nose of the intersection,which plays a key role in the control of surrounding rock at the intersection.The results showed that the structure and strength of the ox-nose-like pillar were improved,and the support and collapse reducing effect of the rock pillar on the roof of the intersection were ensured.Wall foundation and floor angle anchor are simple and effective measures to control floor heave.The field application results showed that the surrounding rock control effect of the supporting technology based on dense anchor cable is ideal,which can better solve the supporting problem of large cross-section intersection in deep mine.

关 键 词：深井 大断面交岔点 密集锚索 协同作用 

分 类 号：TD353[矿业工程—矿井建设]