二次支护技术在高地应力软岩巷道中的应用  

Application on Secondary Support Technology in High Geostress Soft Rock Roadway

作　　者：武江海[1] 

机构地区：[1]河南理工大学土木工程学院,河南焦作454000

出　　处：《河南科技》2017年第9期82-85,共4页Henan Science and Technology

摘　　要：随着矿井开采深度不断加深,巷道所受的地应力越来越大,采用传统的支护方式已不能较好地控制围岩的破坏变形。本文通过对东回风石门表面位移的监测曲线分析一次支护后巷道围岩破坏变形机理,得出巷道变形量大的主要原因是围岩所受地应力较大、支护深度较浅和支护结构强度较低。为此,在一次支护的基础上设计注浆锚杆和注浆锚索束相结合的二次支护技术,取得了较好的支护效果。Roadway bearable ground stress is bigger and bigger with the deeper of mining depth be--comes, the de-struction of the surrounding rock deformation can't be controlled better by traditional way of support. This paper ana-lyzed the damage of surrounding rock deformation mechanism by the monitoring curve of surface displacement of eastreturn air crossdrift, drawing a conclusion that the main reason of the deformation of roadway are roadway bearablehigher ground stress,support dep--th relative shallower, support structure lower strength. So it designs secondarysupport technology of grouted bolt and grouted anchor beam combined, which have made better support effect.

关 键 词：软岩 高地应力 二次支护 注浆锚杆 注浆锚索束 

分 类 号：TD353[矿业工程—矿井建设]