| 管式锚杆提高破碎软弱围岩支护效果的理论与实践 |
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| 引用本文： | 赵喜斌,刘成禹,张继奎.管式锚杆提高破碎软弱围岩支护效果的理论与实践[J].隧道建设,2009,29(1):1-6. |
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| 作者姓名： | 赵喜斌 刘成禹 张继奎 |
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| 作者单位： | 1. 中国中铁隧道集团有限公司 2. 福州大学岩土工程与工程地质研究所 |
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| 摘 要： | 在管式锚杆注浆对破碎、软弱围岩力学性质改善及提高锚杆锚固力分析的基础上，建立管式锚杆支护条件下的力学模型，通过管式锚杆支护与普通喷锚支护塑性区范围大小的对比分析，揭示了管式锚杆提高破碎、软弱围岩支护效果的机理。理论分析及工程实践表明，管式锚杆对提高破碎、软弱围岩支护效果，控制围岩变形有十分明显的作用，是一种特别适宜于破碎、软弱围岩洞室支护的有效方法。此外，文章还对管式锚杆的特点及施工要点进行了分析和论述。
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| 关 键 词： | 管式锚杆软弱围岩锚固力机理施工 |
| 收稿时间： | 2008-07-01 |
| 修稿时间： | 2008-08-28 |
Theory and Practice of Tubular Rock Bolt in Improving Supporting
Effects in Fractured and Weak Surrounding Rock |
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| ZHAO Xibin,LIU Chengyu,ZHANG Jikui.Theory and Practice of Tubular Rock Bolt in Improving Supporting
Effects in Fractured and Weak Surrounding Rock[J].Tunnel Construction,2009,29(1):1-6. |
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| Authors: | ZHAO Xibin LIU Chengyu ZHANG Jikui |
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| Institution: | 1. China Railway Tunnel Group Co., Ltd.2. Geotechnical Engineering and Engineering Geology Institute of Fuzhou University |
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| Abstract: | Based on analysis of grouted tubular rock bolts used in improving the mechanical property of fractured and weak surrounding rock and enhancing the anchoring force of rock bolts,the mechanical model of tunnel with shotcrete and tubular rock bolt support is created.The comparative analysis between plastic zone formed by tubular rock bolt support and that formed by common rock bolt support demonstrates the mechanism of improving supporting effect of tubular rock bolt in fractured and weak surrounding rock.The ... |
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| Keywords: | tubular rock bolt weak surrounding rock anchoring force mechanism construction |
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