厚煤顶大断面回采巷道围岩稳定性研究
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摘要
针对5201厚煤顶大断面回采巷道的支护难题,综合运用现场调研、文献检索、数值模拟、理论分析等研究方法,探析特殊地质生产条件下的巷道围岩变形特点,进而设计了巷道的综合支护方案。实践表明,该支护方案实施后,巷道顶底板移近量、两帮移近量、顶板离层值均得到了有效的控制,实现了安全高效掘进。
In view of the difficult supporting problem of 5201 thick coal roof large section mining roadway, the characteristics of surrounding rock deformation of roadway under special geological production conditions are analyzed by comprehensive application of field investigation, literature retrieval, numerical simulation, theoretical analysis and other research methods. Furthermore, the comprehensive support scheme of roadway is designed. The practice shows that after the implementation of the support scheme, the roof and floor of the roadway move closer, the two sides move closer, and the value of roof separation are all effectively controlled, and the safe and efficient tunneling is realized.
In view of the difficult supporting problem of 5201 thick coal roof large section mining roadway, the characteristics of surrounding rock deformation of roadway under special geological production conditions are analyzed by comprehensive application of field investigation, literature retrieval, numerical simulation, theoretical analysis and other research methods. Furthermore, the comprehensive support scheme of roadway is designed. The practice shows that after the implementation of the support scheme, the roof and floor of the roadway move closer, the two sides move closer, and the value of roof separation are all effectively controlled, and the safe and efficient tunneling is realized.
引文
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[4]杨双锁.煤矿回采巷道围岩控制理论探讨[J].煤炭学报,2010,35(11):1 842-1 853.
[5]宋空军,孙贺军.大断面煤巷锚杆锚索联合支护的应用[J].中国矿业,2005,14(3):61-63.
[2]孟宪锐,王鸿鹏,刘朝晖,等.我国厚煤层开采方法的选择原则与发展现状[J].煤炭科学技术,2009,37(1):39-44.
[3]徐乃忠.我国厚煤层开采的问题与方向[J].煤炭工程,2008(12):5-7.
[4]杨双锁.煤矿回采巷道围岩控制理论探讨[J].煤炭学报,2010,35(11):1 842-1 853.
[5]宋空军,孙贺军.大断面煤巷锚杆锚索联合支护的应用[J].中国矿业,2005,14(3):61-63.