| 典型锚杆支护巷道软弱夹层顶板力学模型研究 |
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| 引用本文： | 刘安秀,曹朋,陈斌.典型锚杆支护巷道软弱夹层顶板力学模型研究[J].煤,2011,20(6). |
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| 作者姓名： | 刘安秀 曹朋 陈斌 |
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| 作者单位： | 中国矿业大学矿业工程学院,江苏徐州,221116 |
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| 基金项目： | 2010年江苏省高等学校大学生实践创新训练计划项目(S2010002) |
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| 摘 要： | 分析了当前锚杆支护巷道的几种力学模型的优缺点,在此基础上详细探究了含软弱夹层巷道锚杆支护的预应力围岩强化组合梁理论,锚杆对巷道顶板起到悬吊作用、组合拱作用、加固作用等,锚杆的预应力越大,岩石的围压越大,围岩强化作用越明显,使巷道受力从类似单轴受压向三轴受压转换越明显。借助岩石力学的本构理论,推导出巷道预应力围岩强化组合梁的本构模型和本构方程,进一步分析了软弱夹层位于锚杆锚固区内、锚杆锚固区边缘、锚杆锚固区外等三种条件下的锚杆支护情况。
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| 关 键 词： | 锚杆 软弱夹层 组合梁模型 力学模型 |
Typical Roadway Bolting Weak Interlayers Roof Mechanical Model Research |
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| LIU An-xiu,CAO Peng,CHEN Bin.Typical Roadway Bolting Weak Interlayers Roof Mechanical Model Research[J].Coal,2011,20(6). |
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| Authors: | LIU An-xiu CAO Peng CHEN Bin |
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| Affiliation: | LIU An-xiu,CAO Peng,CHEN Bin(Mining Engineering College of China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | Outlined several tunnel bolting classical theory based on the details in this soft sandwich containing a combination rock bolting beam theory to explain the weak interlayer in anchoring area,soft rock at anchor Anchor at the edge,soft rock,etc.outside in the three anchoring bolting the situation and stressed the establishment of the roadway surrounding rock constitutive model of composite beams. |
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| Keywords: | rock bolt weak interlayers composite beams model mechanics model |
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