深部高地应力软岩大断面巷道支护技术OA
Support technology for large section roadway in deep high geostress soft rock
为解决2902下顺槽岩巷段深部高地应力软岩巷道受施工条件、施工技术水平等限制,巷道成型质量差,支护难度大等问题,通过对巷道围岩地质力学参数测试,测试分析出巷道围岩强度、围岩岩性、地应力参数.并基于测试分析结果提出深部高地应力软岩巷道控制原则,确定支护方式为"锚网索+套36U型棚+锚索梁+复喷+注浆"复合支护技术,结合巷道的关键支护参数,对其进行了全面研究.由现场观测可知,采取复合支护技术后,巷道顶板的最大下沉量为24 mm,在掘进17 d后巷道顶…查看全部>>
In order to solve the problems of poor formation quality and difficult support of the deep high geostress soft rock roadway in the 2902 lower trough rock roadway section,which is limited by construction conditions and technical level,the strength,surrounding rock properties,and geostress parameters of the roadway surrounding rock were tested and analyzed through testing the geological and mechanical parameters of the roadway surrounding rock.Based on the tes…查看全部>>
李方见;吉升阳;刘纪芳
河南能源集团永煤集团陈四楼煤矿,河南商丘 476600河南航天工业有限责任公司,河南郑州 450000永城职业学院,河南商丘 476600
矿山工程
深部软岩高地应力软岩巷道巷道支护
deep soft rockhigh geostresssoft rock roadwayroadway support
《陕西煤炭》 2024 (7)
118-122,5
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