A study of support strategies in deep soft rock: The horsehead crossing roadway in Daqiang Coal Mine

被引：27
|
作者：
Guo Zhibiao [1 ,2 ]
Yang Xiaojie [1 ,2 ]
Bai Yunpeng [2 ]
Zhou Feng [1 ,2 ]
Li Erqiang [1 ,2 ]
机构：
[1] China Univ Min & Technol, State Key Lab Geomechan & Deep Underground Engn, Beijing 100083, Peoples R China
[2] China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY | 2012年 / 22卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Deep well; Soft rock; Horsehead; Deformation mechanical mechanism; Coupling support;
D O I：
10.1016/j.ijmst.2012.08.012
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
Geomechanics in deep mines becomes more complex and structural support in soft rock can be very difficult. Highly stressed soft rock subject to expansion deformation is particularly difficult to control. The Tiefa Coal Industry Group Daqiang Coal Mine is used as an example. A ventilation shaft, -550 horsehead, is located in tertiary soft rock. Analysis of the reasons for deformation shows an intumescent rock, which is easily damaged. Field observations and theoretical analysis led to a design capable of stabilizing the rock. A combination of spray, anchors, anchor bolts, and soft corner coupled truss supports allowed the deformation to be controlled. This provides a model for similar designs when support of a horsehead roadway is required. (C) 2012 Published by Elsevier B.V. on behalf of China University of Mining & Technology.
引用
收藏
页码：665 / 667
页数：3
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