| 深部构造应力区煤巷肩角锚杆破断机制及控制 |
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| 引用本文： | 肖同强,李怀珍,徐营,张治高.深部构造应力区煤巷肩角锚杆破断机制及控制[J].岩土力学,2013,34(8):2303-2308. |
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| 作者姓名： | 肖同强 李怀珍 徐营 张治高 |
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| 作者单位： | 1.河南理工大学 能源科学与工程学院，河南 焦作 454000；2.中国矿业大学 煤炭资源与安全开采国家重点实验室，江苏 徐州 221008； 3.中国矿业大学 矿业工程学院，江苏 徐州 221008；4.山东新巨龙能源有限责任公司，山东 菏泽 274918 |
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| 基金项目： | 国家自然科学基金青年科学基金资助(No.51204167)；河南理工大学博士基金资助(No. B2012-081)。 |
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| 摘 要： | 针对深部构造应力作用下煤巷“肩角锚杆破断”问题，建立肩角锚杆力学分析模型，分析煤帮沿顶板滑移对锚杆的作用，得到肩角锚杆的受力、变形特征，揭示深部构造应力区煤巷肩角锚杆破断机制，即在煤帮沿顶板的滑移剪切力作用下，杆体发生弯曲变形，且构造应力越大，弯曲变形越严重；肩角锚杆在煤岩层交界面处受到的剪力最大，而使得锚杆在交界面处易被剪断。针对深部构造应力区煤巷肩角锚杆破断问题，提出“控让耦合支护”围岩控制技术，并成功应用于工程实践。
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| 关 键 词： | 深部煤巷 肩角锚杆 剪切破断 控让耦合支护 |
| 收稿时间： | 2012-11-09 |
Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control |
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| XIAO Tong-qiang
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LI Huai-zhen
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XU Ying
,
ZHANG Zhi-gao.Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control[J].Rock and Soil Mechanics,2013,34(8):2303-2308. |
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| Authors: | XIAO Tong-qiang LI Huai-zhen XU Ying ZHANG Zhi-gao |
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| Institution: | 1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China; 2. State Key Laboratory of Resources and Mine Safety, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China; 3. School of Mining and Safety Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China; 4. Shandong Xinjulong Energy Limited Liability Company, Heze, Shandong 274918, China |
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| Abstract: | In deep tectonic stress area, shoulder bolt broken and failure phenomenon is prominent in coal roadway; and it’s easy to induce roof collapse accident. It is an immediate requirement to solve support failure problem. In view of “shoulder bolt breakage” in deep coal roadway under the action of tectonic stress, a mechanical analysis model of shoulder bolt is established to analyze the action of slippage of coal ribs along roof on bolts; and stress and deformation characteristics of shoulder bolt are gotten. Shoulder bolt breaking mechanism is discovered. Under slippage shear force produced by tectonic stress, bending deformation of bolt body happens; and the shear force of shoulder bolt is biggest in interface between coal seam and roof, where the bolt body is cut off easily. Focused on the problem of shoulder bolt breakage, “controlling and yielding coupling support” control technology is put forward. The research results have been successfully applied to engineering practice. |
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| Keywords: | deep coal roadway shoulder bolt shear breakage controlling and yielding coupling support |
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