Model test study on surrounding rock deformation and failure mechanisms of deep roadways with thick top coal |
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| Affiliation: | 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China;2. Post-Doctoral Scientific Research Station, Yankuang Group Company Limited, Zoucheng, Shandong 273500, China;1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;2. School of Engineering and ICT, The University of Tasmania, Hobart TAS7001, Australia;3. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;1. School of Mines, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou 221116, China;2. State Key Laboratory of Coal Resources and Mine Safety, China University of Mining and Technology, Xuzhou 221116, China;3. No.1 Coal Mine, Yangquan Coal Industry Group Co., Ltd, Yangquan 045008, China;1. Key Laboratory for Geo-mechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China;2. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China;3. School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China;1. Geotechnical & Structural Engineering Research Center of Shandong University, Jinan 250061, China;2. Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education (Anhui University of Science and Technology), Huainan 232001, China;3. Longkou Coal Electricity Co., Ltd., Longkou 265700, China;4. Yankuang Group Co., Ltd., Post-doctoral Research Center, Zoucheng 273500, China;1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China;2. Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of Ministry of Education, School of Civil Engineering and Architecture, Wuhan University, Wuhan, Hubei 430072, China;3. Gubei Coal Mine, HuaiZhe Mining-Electricity Industry Limited Liability Company, Huainan, China;4. Jinan AoKe, Mine Engineering Technology Co., Jinan, China |
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| Abstract: | The deep roadway with thick top coal is a typical roadway difficult to support in deep mining project, and resolving this sophisticated problem to control the stability of surrounding rock is of great significance in safety production of coal mines. In order to explore the surrounding rock deformation and failure mechanisms of such deep roadways, with Zhaolou coal mine in Juye mining area of China as the engineering background, a large-scale geomechanical model test was carried out. The displacement and stress evolution laws of surrounding rock supported by the pressure relief anchor box beam system were researched. Meanwhile, the related results validate and analyze main failure characteristics and mechanisms of the surrounding rock by comparing with field test. |
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| Keywords: | Deep roadway with thick top coal Pressure relief anchor box beam Geomechanical model test Field test Deformation and failure mechanism |
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