Analytical study on limit support pressure of working face in underground space exploitation based on improved 3D wedge-prism model
文献类型：期刊论文
| 作者 | Ma, K.1,3; Wu, J.2,4 |
| 刊名 | GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
 |
| 出版日期 | 2021-01-03 |
| 卷号 | 7期号:1页码:11 |
| 关键词 | Resource exploitation Working face Limit support pressure Improved wedge-prism model Slice method |
| ISSN号 | 2363-8419 |
| DOI | 10.1007/s40948-020-00204-7 |
| 英文摘要 | During infrastructure construction and resource exploitation, the stability analysis of the working face and the determination of the limit support pressure are important. Herein, an improved wedge-prism model is proposed with consideration of three aspects. The inter-slice vertical force expression at any depth in the prism is derived using the slice method, and the vertical force acting on the wedge is determined. Equilibrium equations of the wedge in the limit state are formulated, and the limit support pressure of the working face is derived. A set of semi-analytical methods for calculating the limit support pressure is developed. The proposed method is verified via comparison with existing approaches. Finally, case studies are conducted to analyse the factors affecting the limit support pressure, and the following conclusions are drawn. (1) The limit support pressure increases with the tunnel depth and tunnel diameter. Compared with the tunnel depth, the tunnel diameter has a greater effect on the limit support pressure. (2) The shear-strength indices of the crossed layer have significantly greater effects on the limit support pressure than those of the covering layer. (3) The limit support pressure increases linearly with the increasing groundwater level. The research results provide guidance for infrastructure construction and mineral resource development and can be used to ensure the safety of construction and mining. |
| 资助项目 | National Key Research and Development Plan of China[2017YFC1503103] ; National Natural Science Foundation of China[51774064] ; National Natural Science Foundation of China[51974055] ; National Natural Science Foundation of China[42007234] ; China Postdoctoral Science Foundation[2019M652384] ; Fundamental Research Funds for the Central Universities[DUT20GJ216] ; Special-Funded Program on National Key Scientific Instruments ; State Key Laboratory of Water Resource Protection and Utilization in Coal Mining[SHJT-17-42.15] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z019009] |
| WOS研究方向 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000606411900001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25502]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, J. |
| 作者单位 | 1.Dalian Univ Technol, Inst Rock Instabil & Seism Res, Dalian 116024, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Liaoning, Peoples R China 4.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, K.,Wu, J.. Analytical study on limit support pressure of working face in underground space exploitation based on improved 3D wedge-prism model[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2021,7(1):11. |
| APA | Ma, K.,&Wu, J..(2021).Analytical study on limit support pressure of working face in underground space exploitation based on improved 3D wedge-prism model.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,7(1),11. |
| MLA | Ma, K.,et al."Analytical study on limit support pressure of working face in underground space exploitation based on improved 3D wedge-prism model".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 7.1(2021):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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