| 深部层状岩体巷道承载特性的物理模拟试验研究 |
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| 引用本文： | 苏士龙,史新帅,张 力.深部层状岩体巷道承载特性的物理模拟试验研究[J].中国矿业,2020,29(1). |
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| 作者姓名： | 苏士龙 史新帅 张 力 |
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| 作者单位： | 华晋焦煤有限责任公司;;中国矿业大学深部岩土力学与地下工程国家重点实验室,中国矿业大学深部岩土力学与地下工程国家重点实验室,中国矿业大学深部岩土力学与地下工程国家重点实验室 |
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| 摘 要： | 为研究深部高应力条件下层状岩体巷道的承载特性及失稳机理,采用物理相似模拟试验方法,并借助高速摄像机、静态电阻应变仪、位移计等手段,研究了不同支护方式(无支护、锚杆支护、锚杆索支护)层状岩体巷道的变形破坏特征和应力演化规律;同时,从压力拱的角度分析了层状岩体巷道的成拱特性。研究结果表明:无支护条件下,巷道围岩变形破坏严重,顶板大面积垮落,呈现倒V型破坏区,无法形成有效的压力拱结构;采取锚杆支护和锚杆索支护后,巷道围岩应力状态得到改善,能够形成有效的压力拱,围岩变形量减小。研究成果为类似地质条件巷道支护设计提供了依据。
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| 关 键 词： | 层状岩体 承载特性 失稳机理 相似模拟试验 变形破坏特征 |
| 收稿时间： | 2018/12/20 0:00:00 |
| 修稿时间： | 2019/9/3 0:00:00 |
Physical simulation test study on bearing characteristics ofdeep roadway in layered rock mass |
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| SU Shilong,SHI Xinshuai and ZHANG Li.Physical simulation test study on bearing characteristics ofdeep roadway in layered rock mass[J].China Mining Magazine,2020,29(1). |
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| Authors: | SU Shilong SHI Xinshuai and ZHANG Li |
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| Affiliation: | Shanxi Coking Coal Group Investment Co,Ltd;China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology;PR China,State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology |
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| Abstract: | In order to reveal the reveal the bearing characteristics and failure mechanism of layered rock roadway under the condition of high stress, physical similarity simulation tests were established, and combing with the means of high-speed camera, static resistance strain gauge and displacement gauge, the deformation and failure characteristics and stress evolution law of layered rock roadway under different support modes were systematically studied. From the angle of pressure arch, the arching characteristics of layered rock roadway are also analyzed. The results show that under the condition of no support, the surrounding rock of roadway is seriously deformed and can not form an effective pressure arch structure. When bolt or cable support is adopted, the stress state of surrounding rock of roadway is improved, effective pressure arch can be formed, and the deformation of surrounding rock decreases. The research results can provide a basis for roadway support design under similar geological conditions. |
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| Keywords: | layered rock mass bearing characteristics failure mechanism similarity simulation tests deformation and failure characteristics |
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