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深埋软岩巷道破坏机理与控制技术研究
引用本文:李向阳,韩立军,宗义江.深埋软岩巷道破坏机理与控制技术研究[J].矿冶工程,2012,32(6):21-25.
作者姓名:李向阳  韩立军  宗义江
作者单位:中国矿业大学 深部岩土力学与地下工程国家重点实验室, 江苏 徐州 221008
摘    要:基于闫布煤矿主下山巷道的地质条件和破坏特征, 分析了巷道围岩变形破坏机理, 提出了巷道围岩稳定性控制对策及支护备选方案。采用数值模拟方法对5种不同方案进行了优化选择和耦合设计, 提出了由初次高性能锚网喷支护、二次注浆及底板锚注支护形成的耦合支护方案, 并给出了详细的技术参数。通过耦合支护进行修复加固, 可实现与巷道围岩的共同承载, 提高支护结构的整体性和承载能力。工程试验结果表明: 该耦合支护技术有效地控制了巷道变形, 技术经济效益十分显著, 为矿井的安全高效生产创造了条件。

关 键 词:深埋巷道  软岩  地应力  耦合支护  破坏机理  
收稿时间:2012-06-24

Failure Mechanism and Control Technology for Deeply Buried Soft Rock Roadway
LI Xiang-yang,HAN Li-jun,ZONG Yi-jiang.Failure Mechanism and Control Technology for Deeply Buried Soft Rock Roadway[J].Mining and Metallurgical Engineering,2012,32(6):21-25.
Authors:LI Xiang-yang  HAN Li-jun  ZONG Yi-jiang
Affiliation:State Key Lab of Deep Rock and Soil Mechanics and Underground Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China
Abstract:Based on the geological condition and deformation characteristics of roadway in Yanbu Coal Mine, some stability control measures and alternative support schemes for the surrounding rock were proposed after an analysis of failure mechanism of the roadway deformation. Then the proposed five schemes were optimized with numerical simulation method. An integrated support plan composed of initial bolt-shotcreting, secondary grouting, as well as floor bolting was proposed with the detailed technical parameters. This integrated support plan can realize a joint load-bearing on the surround rock and roadway, enhancing the integrity and bearing capacity of support structure. The practical application results showed that the deformation of roadway was effectively controlled with this integrated supporting technology, resulting in remarkable technical and economic benefits, safe and more efficient production as well.
Keywords:deeply-buried roadway  soft rock  geo-stress  coupling support  failure mechanism  
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