深部高应力软岩巷道围岩失稳机理及控制技术研究  

Research on destabilisation mechanism and control technology of surrounding rock in deep high stress soft rock roadway

作　　者：杨江峰 许良全 李子建 张华 周记名 卢许佳 Yang Jiangfeng;Xu Liangquan;Li Zijian;Zhang Hua;Zhou Jiming;Lu Xujia(The 3th Engineering Co.,Ltd.,the 2nd Public Bureau of China Communications,Xi'an 710016,China;China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200135,China;China Railway 22nd Bureau Group Co.,Ltd.,Beijing 100043,China;China Railway Third Bureau Group Bridge and Tunnel Engineering Co.,Ltd.,Chengdu 610000,China;China Civil Engineering Construction Corporation,Beijing 100038,China;Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611730,China)

机构地区：[1]中交二公局第三工程有限公司,陕西西安710016 [2]中国建筑第八工程局有限公司,上海200135 [3]中铁二十二局集团有限公司,北京100043 [4]中铁三局集团桥隧工程有限公司,四川成都610000 [5]中国土木工程集团有限公司,北京100038 [6]中国水利水电第七工程局有限公司,四川成都611730

出　　处：《能源与环保》2024年第10期280-286,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：四川省科技计划项目(2021YJ0033)。

摘　　要：为探究深部软岩巷道支护技术问题,以霍州煤电临汾宏大公司隆博矿五采区轨道大巷为工程背景,通过现场勘测、X射线衍射、电镜扫描及数值模拟,研究分析了深部软岩巷道的失稳机理,得出地应力高、煤岩体强度低及支护方式不合理是导致巷道围岩变形破坏的主要影响因素。据此提出了“锚杆索+金属网+喷射混凝土+钢管混凝土支架”联合支护方案。工业实践表明,采用联合支护方案后,巷道顶底板移近量和两帮收敛量最大值分别为142、123 mm,相比原支护方案,分别减少了约67%、79%,围岩变形控制效果明显。研究结果可为深部软岩巷道的围岩稳定性控制提供参考。In order to investigate the technical problems of deep soft rock roadway supporting,taking the track roadway in the fifth mining area of Longbo Mine of Huozhou Coal and Power Linfen Hongda Company as the engineering background,the destabilisation mechanism of deep soft rock roadway was studied and analyzed through on-site investigation,X-ray diffraction,electron microscope scanning and numerical simulation,and it was concluded that the high geostress,the low strength of the coal and rock mass,and the irrational supporting method were the main influencing factors that led to deformation and destruction of the surrounding rock of the roadway.Accordingly,the joint supporting scheme of"anchor cable+metal mesh+sprayed concrete+steel pipe concrete support"was proposed.Industrial practice shows that,after adopting the joint supporting scheme,the maximum values of the roof and floor approach and the convergence of two gangs are 142 and 123 mm,which are about 67% and 79% less than that of the original supporting scheme,and the effect of deformation control of the surrounding rock is obvious.The results of this study can provide an important reference for the control of surrounding rock stability of deep soft rock roadway.

关 键 词：高应力 软岩巷道 数值模型 变形破坏 钢管混凝土支架 

分 类 号：TD353[矿业工程—矿井建设]