穿断层破碎带巷道围岩破坏特征及其控制

The failure characteristics and control of roadway surrounding rock in fault rupture zone

以晋华宫矿12#层307盘区集中轨道上山穿越断层破碎带围岩控制为工程背景,根据巷道穿过的围岩的岩性和破坏特性将12#层307盘区集中轨道上山穿过的断层的岩层初步分为Ⅲ、Ⅳ、Ⅴ三大类,支护时选其中强度最低的Ⅴ类岩(粉砂质泥岩)为支护研究对象。通过结构补偿锚索将钢支架-锚索进行耦合支护,形成一个支护整体来控制围岩的变形,发挥主-被动支护各自的优点。工业实践表明:所采用的支护形式能够断层破碎带的围岩的变形,达到设计要求。

taking 12#layer 307 panel jinhuagong coal mine concentration track up the hill through the fault fracture zone of surrounding rock control as the engineering background,according to the surrounding rock of roadway through the characteristics of lithology and damage will be 12#layer 307 panel on track up the hill through the preliminary divided intoⅢ,Ⅳ,of fault rockⅤthree categories,supporting the selection with the lowest strengthⅤclass rock(silty mudstone)for supporting the research object.The steel timber-anchor cable is coupled with the structural compensation anchor cable to control the deformation of surrounding rock as a whole.Industrial practice shows that the supporting form adopted can deform the surrounding rock of the fractured zone and meet the design requirements.