| 高应力极软破碎岩层巷道高强度耦合支护技术研究 |
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| 引用本文： | 王卫军,彭刚,黄俊.高应力极软破碎岩层巷道高强度耦合支护技术研究[J].煤炭学报,2011,36(2):223-228. |
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| 作者姓名： | 王卫军 彭刚 黄俊 |
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| 作者单位： | 湖南科技大学 煤矿安全开采技术湖南省重点实验室 能源与安全工程学院,湖南 湘潭411201 |
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| 基金项目： | 国家自然科学基金项目（51074071）；湖南省科技计划重点项目（2009FJ2005）；湖南省高校科技创新团队支持计划资助 |
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| 摘 要： | 从控制围岩集中应力转移和缩小围岩破碎区范围出发，分析了牛马司矿业公司水井头煤矿-300 m东大巷的变形破坏特征，得出该巷道围岩失稳机制，指出原支护方式的主动让压、支护强度低是导致巷道剧烈变形的主要原因。通过现场测试和数值模拟，提出了采用高强度锚杆、强力锚索、注浆加固围岩的高阻让压和高强度支护技术，根据现场监测数据和耦合支护原理，确定了合理的各支护环节的支护时间:U型钢支护在锚杆支护32 h后进行；注浆支护在Ｕ型钢支护10 d后进行。
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| 关 键 词： | 高应力 极软岩层 高阻让压、高强度支护 |
| 收稿时间： | 2010-08-23 |
Research on High-strength Coupling Support Technology of High Stress Extremely Soft Rock Roadway |
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| Abstract: | Starting from the control of concentrated stress in surrounding rocks transfer and reducing the area of rock crushing,analyzed the characteristics of deformation and failure in Shuijingtou Coal Mine -300 m east roadway of Hunan Niumasi Mining Company,obtained the roadway failure mechanism,pointed out that the main reason of leading to severe deformation is initiative to pressure and low intensity support with the original support method.Through field testing and numerical simulation,advanced the support technology as “High resistance pressure allowing and high-strength” by using high strength bolting,strong anchor,grouting surrounding rock,according to the field monitoring data and coupling support principle,determined a reasonable coupling support time which related to all links of the support:U-shaped steel support is 32 h after surrounding rocks bolting,grouting support is 10 d after U-shaped steel support. |
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| Keywords: | high stress extremely soft rock high resistance pressure allowing high-strength support |
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