| Support technology for mine roadways in extreme weakly cemented strata and its application简 |
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| 作者姓名： | Meng Qingbin Han Lijun Qiao Weiguo Lin Dengge and Fan Jiadong |
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| 摘 要： |
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| 收稿时间： | 5 September 2013 |
Support technology for mine roadways in extreme weakly cemented strata and its application |
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| Meng Qingbin,Han Lijun,Qiao Weiguo,Lin Dengge and Fan Jiadong.Support technology for mine roadways in extreme weakly cemented strata and its application[J].Mining Science and Technology,2014,24(2):157-164. |
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| Affiliation: | 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. 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. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China;2. Jiangsu Jianzhu Institute, Xuzhou 221116, China;3. Shanxi Electric Power Exploration & Design Institute, Taiyuan 030001, China;1. Department of Petroleum and Mining Engineering, Shahid Bahonar University of Kerman, Kerman, Iran;2. Department of Mining Engineering, Shahid Bahonar University of Kerman, Kerman 7618849381, Iran;1. Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China;2. School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China |
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| Abstract: | For the engineering geology conditions of bad mine roadway roof and floor lithology in extremely weak cemented strata, the best section shape of the roadway is determined from the study of tunnel surrounding rock displacement, plastic zone and stress distribution in rectangular, circle arch and arch wall sections, respectively. Based on the mining depth and thickness of the coal seam, roadway support technology solutions with different buried depth and thickness of coal seam are proposed. Support schemes are amended and optimized in time through monitoring data of the deformation of roadway, roof separation, I-beam bracket, bolt and anchor cable force to ensure the long-term stability and security of the roadway surrounding rock and support structure. The monitoring results show that mine roadway support schemes for different buried depth and section can be adapted to the characteristics of ground pressure and deformation of the surrounding rock in different depth well, effectively control the roadway surrounding rock deformation and the floor heave and guarantee the safety of construction and basic stability of surrounding rock and support structure. |
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| Keywords: | Extreme weakly cemented strata Mining gateway Support technology |
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