| Stability control of surrounding rocks for a coal roadway in a deep tectonic region简 |
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| 引用本文： | Xiao Tongqiang,Wang Xiangyu and Zhang Zhigao. Stability control of surrounding rocks for a coal roadway in a deep tectonic region简[J]. 矿业科学技术学报(英文版), 2014, 24(2): 171-176. DOI: 10.1016/j.ijmst.2014.01.005 |
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| 作者姓名： | Xiao Tongqiang Wang Xiangyu and Zhang Zhigao |
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| 摘 要： |
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| 收稿时间： | 2013-09-08 |
Stability control of surrounding rocks for a coal roadway in a deep tectonic region |
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| Affiliation: | 1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;2. School of Mining and Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China;3. Shandong Xinjulong Energy Limited Liability Company, Heze 274918, China;1. School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China;2. University of Queensland, Sustainable Minerals Institute, Julius Kruttschnitt Mineral Research Centre, Qld 4068, Australia;1. School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China;2. Tangshan Research Institute, China Coal Technology and Engineering Group Corp., Tangshan 063012, China;3. School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China;1. State Key Laboratory of Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China;2. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266510, China;1. State Key Laboratory of Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221116, China;2. School of Mechanics & Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China;3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China;4. School of Civil Engineering, Xuzhou Institute of Technology, Xuzhou 221008, China;5. School of Mines, China University of Mining & Technology, Xuzhou 221116, China |
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| Abstract: | In order to effectively control the deformation and failure of surrounding rocks in a coal roadway in a deep tectonic region, the deformation and failure mechanism and stability control mechanism were studied. With such methods as numerical simulation and field testing, the distribution law of the displacement, stress and plastic zone in the surrounding rocks was analyzed. The deformation and failure mechanisms of coal roadways in deep tectonic areas were revealed: under high tectonic stress, two sides will slide along the roof or floor; while the plastic zone of the two sides will extend along the roof or floor, leading to more serious deformation and failure in the corner of two sides and the bolt supporting the corners is readily cut off by the shear force or tension force. Aimed at controlling the large slippage deformation of the two sides, serious deformation and failure in the corners of the two sides and massive bolt breakage, a “controlling and yielding coupling support” control technology is proposed. Firstly, bolts which do not pass through the bedding plane should be used in the corners of the roadway, allowing the two sides to have some degree of sliding to achieve the purpose of “yielding” support, and which avoid breakage of the bolts in the corner. After yielding support, bolts in the corner of the roadway and which pass through the bedding plane should be used to control the deformation and failure of the coal in the corner. “Controlling and yielding coupling support” technology has been successfully applied in engineering practice, and the stability of deep coal roadway has been greatly improved. |
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| Keywords: | Tectonic stress Coal roadway Bedding plane Controlling Yielding coupling support |
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