| 高应力大变形软岩巷道“三壳”围岩控制机理及应用 |
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| 引用本文： | 王羽扬,刘勇,王沉,康向涛,冷光海.高应力大变形软岩巷道“三壳”围岩控制机理及应用[J].中国安全生产科学技术,2019,15(7):100-106. |
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| 作者姓名： | 王羽扬 刘勇 王沉 康向涛 冷光海 |
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| 作者单位： | (1.贵州大学 矿业学院，贵州 贵阳 550025； 2.贵州省复杂地质矿山开采安全技术工程中心，贵州 贵阳 550025) |
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| 基金项目： | * 基金项目: 贵州省本科高校一流专业建设项目（SJZY2017006）；贵州省科技计划项目（黔科合平台人才［2018］5781号、黔科合SY字［2013］3107号)；贵州省教育厅青年科技人才成长项目（黔科合KY字［2018］115）；贵州大学引进人才科研基金项目（贵大人基合字2016-56） |
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| 摘 要： | 为解决土城煤矿14运输上山软岩巷道变形量大、锚杆索失效严重等技术难题，通过现场调研、室内试验、理论分析、数值模拟及工业性试验等方法，揭示了围岩变形特征以及巷道失稳破坏机理，提出了“三壳”围岩控制理论。基于以上研究，设计了“锚杆锚索+灌浆+钢管混凝土支架”的复合支护方案，建立了基于“三壳”围岩控制理论的“三壳”支护结构体力学模型，计算出设计方案的极限承载能力为2.54 MPa，随后采用 FLAC3D数值模拟软件对设计方案进行模拟分析，验证了方案合理性。最后，该复合支护得到成功运用，现场监测结果表明:巷道顶底板以及两帮变形量均低于100 mm，巷道未发生明显变形，支护效果良好。
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| 关 键 词： | 高应力 大变形 软岩巷道 “三壳”支护 钢管混凝土支架 |
Control mechanism and application of “Triple shell” surrounding rock in high stress and large deformation soft rock roadway |
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| WANG Yuyang,LIU Yong,' target="_blank" rel="external">,WANG Chen,' target="_blank" rel="external">,KANG Xiangtao,' target="_blank" rel="external">,LENG Guanghai.Control mechanism and application of “Triple shell” surrounding rock in high stress and large deformation soft rock roadway[J].Journal of Safety Science and Technology,2019,15(7):100-106. |
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| Authors: | WANG Yuyang LIU Yong " target="_blank">' target="_blank" rel="external"> WANG Chen " target="_blank">' target="_blank" rel="external"> KANG Xiangtao " target="_blank">' target="_blank" rel="external"> LENG Guanghai |
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| Affiliation: | (1. Mining College, Guizhou University, Guiyang Guizhou 550025, China;2. Guizhou Engineering Center for Safe Mining Technology Under Complex Geologic Condition, Guiyang Guizhou 550025, China) |
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| Abstract: | In order to solve the technical difficulties such as serious deformation of No. 14 uphill soft rock roadway and bolt (cable) failure in Tucheng mine, the deformation characteristics of surrounding rock and the instability failure mechanism of roadway were revealed through site investigation, laboratory test, theoretical analysis, numerical simulation and industrial tests, and the “Triple Shell” surrounding rock control theory was put forward. On the basis of the research mentioned above, a comprehensive supporting scheme with “bolt(cable) + grouting + concrete filled steel tube support” was designed, and a “Triple shell” supporting structure mechanical model based on the “Triple shell” surrounding rock control theory was established. The extreme carrying capacity of the design scheme was calculated, which was 2.54 MPa, then the numerical simulation software FLAC3D was used to verify the rationality of the scheme through the simulation analysis. Finally, the comprehensive supporting scheme was successfully applied, and the actual monitoring results at site presented the good support effect, i.e. the deformation at roof, floor and both side walls of roadway were all less than 100 mm, and no obvious deformation was discovered. |
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| Keywords: | high stress large deformation soft rock roadway “Triple shell” support concrete filled steel tube support |
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