深部大断面软岩巷道围岩控制技术研究  

Surrounding Rock Control Technology for Deep and Large Section Soft Rock Roadways

作　　者：魏成杰 WEI Chengjie(Shuiyu Coal Industry Co.,Ltd.,Shanxi Fenxi Mining Industry Group,Lvliang 032302,Shanxi,China)

机构地区：[1]山西汾西矿业集团水峪煤业有限责任公司,山西吕梁032302

出　　处：《能源与节能》2025年第3期151-153,251,共4页Energy and Energy Conservation

摘　　要：针对深部大断面软岩巷道围岩控制难度大的问题,以11302运输巷为工程背景,在分析运输巷现场地质条件、围岩变形原因的基础上,提出综合锚杆、长注浆锚索、钢筋网、喷浆、滞后浅部注浆方式控制围岩变形,并给出围岩支护方案。采用的支护方案通过增加锚杆、锚索长度提升了支护强度,并确保锚索锚固端位于稳定岩层中,用打设底板锚杆、注浆方式解决底鼓,在巷帮、拱顶深部(锚索注浆)及浅部注浆以实现软岩改造,让围岩与支护体系相互配合控制围岩变形。现场应用后,11302运输巷顶底板、两帮最大移近量分别为122、115mm,围岩变形量整体较小,可满足后续使用需求。In response to the difficulty of controlling the surrounding rock of deep and large section soft rock roadways,taking 11302 transportation roadway as the engineering background,based on the analysis of the geological conditions and deformation reasons of the surrounding rock at the transportation roadway site,a comprehensive method of anchor rod,long grouting anchor cable,steel mesh,spraying,and delayed shallow grouting was proposed to control the deformation of the surrounding rock,and a surrounding rock support scheme was given.The adopted support scheme improved the support strength by increasing the length of anchor rods and cables,and ensured that the anchorage end of the anchor cable was located in a stable rock layer.Floor heaving was solved by installing floor anchor rods and grouting.Soft rock transformation was achieved by grouting in the deep and shallow parts of the roadway and arch top(anchor grouting),allowing the surrounding rock and support system to cooperate and control the deformation of the surrounding rock.After on-site application,the maximum displacement of the roof and floor,as well as the two sides of the 11302 transportation roadway,were 122 mm and 115 mm respectively.The overall deformation of the surrounding rock was relatively small,which can meet the subsequent usage needs.

关 键 词：深部开采 大断面巷道 软岩巷道 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]