| 高地应力破碎软岩巷道底臌特性及综合控制对策研究 |
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| 引用本文： | 刘泉声,肖虎,卢兴利,崔文泰.高地应力破碎软岩巷道底臌特性及综合控制对策研究[J].岩土力学,2012,33(6):1703-1710. |
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| 作者姓名： | 刘泉声 肖虎 卢兴利 崔文泰 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071；2. 山东科技大学 土木建筑学院，山东 青岛 266510 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(No.kzcx2-yw-116) |
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| 摘 要： | 高地应力破碎软岩巷道底臌问题，由于其地质条件的复杂性，是煤矿开采的技术难题之一。通过总结分析高地应力破碎软岩巷道底臌的变形破坏特性，研究了底臌治理对策。研究结果表明，底板围岩呈现出挤压剪切流变特性，在支护对策上应将支护体系视为完整体系，在加强修复固结、应力转移和扩大承载圈的同时强调调动帮、顶部的间接控制作用。提出了以底板超挖、高强度预应力锚索、深孔注浆、底脚、拱角锚杆和回填为技术支撑的综合治理对策，通过FLAC3D建立的三维数值分析模型，分析了在综合治理对策下围岩位移场及塑性区的变化，验证了该方法的有效性。将综合治理对策应用到淮南潘二煤矿东二采区主要大巷，取得了良好的支护效果。
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| 关 键 词： | 软岩巷道 底臌 高地应力 围岩 控制对策 |
| 收稿时间： | 2010-12-16 |
Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures |
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| LIU Quan-sheng
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XIAO Hu
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LU Xing-li
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CUI Wen-tai.Research on floor heave characteristics of broken soft rocks with high geostress and its comprehensive control measures[J].Rock and Soil Mechanics,2012,33(6):1703-1710. |
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| Authors: | LIU Quan-sheng XIAO Hu LU Xing-li CUI Wen-tai |
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| Institution: | 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, Shandong 266510, China |
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| Abstract: | The problem of floor heave of high geostress broken and soft rock roadways,because of its complex geological conditions,is one of the technical problems of coal mining.Deformation and failure characteristics of floor heave of high geostress broken soft rock are analyzed;and the control measures are studied.The results show that,surrounding rock shows compressive shear rheological properties,supporting system should be regarded as a complete system;it focuses on not only surrounding rock repair,stress transfer and enlarged load ring,but also on exploiting the indirect effect of other parts of the supporting system.Comprehensive control measures integrating overcutting floor,high-strength cable,deep-hole grouting,bottom corner rockbolt,side bottom rockbolt and backfill are put forward.Numerical analysis model is established by using FLAC3D;the changes of surrounding rock displacement field and plastic zones are analyzed while using the method;the validity of the method is verified.Comprehensive control measures applied to main roadways of Donger coal mining area,Paner mine,Huainan,makes a good supporting effect. |
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| Keywords: | soft rock roadways floor heave high geostress surrounding rocks control measures |
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