| 易破碎顶板巷道锚杆支护数值分析研究 |
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| 引用本文： | 高峰.易破碎顶板巷道锚杆支护数值分析研究[J].矿业安全与环保,2010,37(6). |
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| 作者姓名： | 高峰 |
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| 作者单位： | 山西大同大学,煤炭工程学院,山西,大同,037003 |
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| 摘 要： | 易破碎顶板巷道属于软岩巷道,其支护设计的成败受到众多因素影响。为了对不同预应力条件下的巷道锚杆支护效果有更深刻的认识,以某矿易破碎顶板巷道为背景,对3种预应力水平的围岩变形特征和应力分布规律进行了数值分析。计算结果表明:高预应力方案能够显著提高围岩的强度和承载能力,有效地控制易破碎顶板巷道的围岩变形,即支护成败在很大程度上取决于预应力水平的高低,对类似巷道的设计、施工及维护有一定的指导意义。
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| 关 键 词： | 数值分析 FLAC 锚杆支护 预应力 |
Numerical Simulation Research of Bolt Support for Roadway with Friable Roof |
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| GAO Feng.Numerical Simulation Research of Bolt Support for Roadway with Friable Roof[J].Mining Safety & Environmental Protection,2010,37(6). |
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| Authors: | GAO Feng |
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| Abstract: | The roadway with friable roof belongs to soft rock roadway,and its support design was affected by many kinds of factors.To well recognize the bolt support effect under different pre-stress level,numerical analysis was made in this paper on the deformation characteristics and stress distribution law of surrounding rock in three pre-stress levels by taking a roadway with friable roof in a mine as background.The calculation results showed that the high pre-stress scheme could greatly improve the strength and b... |
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