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卢兴利, 刘泉声, 苏培芳, 崔文泰. 潘二矿松软破碎巷道群大变形失稳机理及支护技术优化研究[J]. 岩土工程学报, 2013, 35(zk1): 97-102.
引用本文: 卢兴利, 刘泉声, 苏培芳, 崔文泰. 潘二矿松软破碎巷道群大变形失稳机理及支护技术优化研究[J]. 岩土工程学报, 2013, 35(zk1): 97-102.
LU Xing-li, LIU Quan-sheng, SU Pei-fang, CUI Wen-tai. Instability mechanism and bracing optimization for roadway groups with soft and fractured surrounding rock in Pan'er Coal Mine[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 97-102.
Citation: LU Xing-li, LIU Quan-sheng, SU Pei-fang, CUI Wen-tai. Instability mechanism and bracing optimization for roadway groups with soft and fractured surrounding rock in Pan'er Coal Mine[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 97-102.

潘二矿松软破碎巷道群大变形失稳机理及支护技术优化研究

Instability mechanism and bracing optimization for roadway groups with soft and fractured surrounding rock in Pan'er Coal Mine

  • 摘要: 随着煤炭资源转入深部开采阶段,深井巷道尤其是巷道群的围岩稳定控制已成为重大的技术难题。基于淮南潘二矿东二采区井底车场巷道群现场工程,采用现场工程地质调查、室内试验、数值仿真和理论分析等手段,系统分析了巷道群围岩及支护结构的变形开裂特征及失稳机理,提出了预应力组合锚杆(索)-U型钢支架-分步注浆控制巷道帮顶、帮角/底角锚杆-底板预应力锚索控制底板的深部松散破碎巷道群稳定性综合控制对策和设计方案,并将研究成果应用于工程实践,通过现场监测验证了分析方法及控制对策的合理性和有效性。

     

    Abstract: Based on the roadway groups in the shaft station of the second east mining area, Pan'er Coal Mine, the characteristics of deformation and fracture of surrounding rock and bracing structure as well as their instability mechanism are analyzed by means of the engineering geological investigation, laboratory experiment, numerical simulation and theoretical analysis. An integrated multiple-step control measure and the design method for the roadway groups with soft and fractured surrounding rock are put forward, which mainly include pretension bolt and cable-steel support-grouting to control the roof and sidewalls, and at the same time side/floor corner bolt-pretension cable in the floor to control the floor. The research achievements are applied, and the in-situ monitoring results show the proposed method and the control strategy are scientific, rational and effective.

     

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