| 复合顶板的破坏机理与锚杆支护技术 |
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| 引用本文： | 杨峰,王连国,贺安民,高峰,许东来. 复合顶板的破坏机理与锚杆支护技术[J]. 采矿与安全工程学报, 2008, 25(3) |
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| 作者姓名： | 杨峰 王连国 贺安民 高峰 许东来 |
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| 作者单位： | 中国矿业大学,深部岩土力学与地下工程国家重点实验室,江苏,徐州,221008;中国矿业大学,理学院,江苏,徐州,221116;中国矿业大学,矿业工程学院,江苏,徐州,221116;山东科技大学,资源与环境工程学院,山东,青岛,266510 |
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| 基金项目： | 教育部科学技术研究重点项目，国家重点基础研究发展计划(973计划)，江苏省自然科学基金 |
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| 摘 要： | 为缓解翟镇煤矿复合顶板巷道支护的困难局面,通过理论分析、数值模拟并结合工程实践,对复合顶板巷道变形破坏机理及相应的锚杆支护技术进行了研究.结果表明:复合顶板的变形破坏主要是因锚杆的主动支护作用较差,加之复合顶板各岩层的节理裂隙发育,使复合顶板的初期离层量和变形量较大,顶板的稳定性持续恶化,最终导致复合顶板的大变形以至破坏.为此应提高锚杆(索)的预紧力以充分发挥锚杆(索)的主动支护作用,增强支护系统的护表功能并加强锚索支护的强度.
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| 关 键 词： | 复合顶板 破坏机理 锚杆支护 |
Failure Mechanism and Bolting Support Technique of Complex Roof |
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| YANG Feng,WANG Lian-guo,HE An-min,GAO Feng,XU Dong-lai. Failure Mechanism and Bolting Support Technique of Complex Roof[J]. Journal of Mining and Safety Engineering, 2008, 25(3) |
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| Authors: | YANG Feng WANG Lian-guo HE An-min GAO Feng XU Dong-lai |
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| Abstract: | In order to deal with the difficult situation of roadway support with compound roof in Zhaizhen coal mine,the deformation mechanism and bolting support technique for this compound roof is studied by theoretical analysis,numerical simulation,and engineering practices.The results show that two factors,poor supporting performance of bolt and well developed joint fissures in roof rocks,lead to a large amount of bed separation and large deformation,making stability of roof poorer and poorer,and at last,the large... |
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| Keywords: | compound roof deformation mechanism bolting support technique |
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