An analysis method for evaluating the safety of pressure water conveyance tunnel in argillaceous sandstone under water-weakening conditions
文献类型：期刊论文
| 作者 | Yang, Fanjie2,3; Zhou, Hui2,3; Zhang, Chuanqing2,3; Lu, Jingjing2,3; Lu, Xinjing1; Geng, Yijun1 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 97页码:15 |
| ISSN号 | 0886-7798 |
| 关键词 | Pressure water conveyance tunnel Cretaceous argillaceous sandstone Engineering safety Analysis method Water-weakening |
| DOI | 10.1016/j.tust.2019.103264 |
| 英文摘要 | In a pressure water conveyance tunnel with surrounding rock of argillaceous sandstone, the water-weakening properties of argillaceous sandstone pose a major challenge to engineering safety. In addition to the conventional features of fluid-solid coupling, the argillaceous sandstone has two additional features during inside-to-outside seepage in pressure water conveyance tunnels: (1) water infiltration significantly weakens the mechanical properties of the rock and (2) variation in the rock stress tempts an observable effect on permeability due to variation in rock microstructures. In this investigation, an analysis method was proposed for the safety of pressure water conveyance tunnels in argillaceous sandstone under water-weakening conditions. Three parts were included to propose this method such as, experimental, numerical calculation, and safety evaluation. Firstly, we studied the water-weakening mechanical properties and permeability characteristics of argillaceous sandstone based on laboratory tests. Subsequently, based on the test results, we carried out simulation calculations considering the water-weakening mechanical properties and permeability characteristics of argillaceous sandstone. Next, we evaluated tunnel safety by the relevant evaluation criteria based on the calculation results. The rationality of this method was verified by successfully simulating a permeability test on large-size cylindrical specimens of argillaceous sandstone. Finally, we adopted the method to evaluate the engineering safety of pressure water conveyance tunnels with surrounding rocks composed of Cretaceous argillaceous sandstone in the Lanzhou water-source construction project. The obtained results play an important role in guiding the design and construction of the engineering. Compared with the traditional empirical strength reduction method, the proposed method provided a better option for the accurate evaluation of the safety of pressure water conveyance tunnels in argillaceous sandstone during operation. |
| 资助项目 | National Program on Key Basic Research Project of China (973 Program)[2014CB046902] ; National Key R&D Program of China[2018YFC0809601] ; Key projects of the Yalong River Joint Fund of the National Natural Science Foundation of China[U1865203] ; National Natural Science Foundation of China (NSFC)[51404240] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000514214800013 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23679]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhou, Hui |
| 作者单位 | 1.Yellow River Engn Consulting Co Ltd, Zhengzhou 450003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Fanjie,Zhou, Hui,Zhang, Chuanqing,et al. An analysis method for evaluating the safety of pressure water conveyance tunnel in argillaceous sandstone under water-weakening conditions[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2020,97:15. |
| APA | Yang, Fanjie,Zhou, Hui,Zhang, Chuanqing,Lu, Jingjing,Lu, Xinjing,&Geng, Yijun.(2020).An analysis method for evaluating the safety of pressure water conveyance tunnel in argillaceous sandstone under water-weakening conditions.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,97,15. |
| MLA | Yang, Fanjie,et al."An analysis method for evaluating the safety of pressure water conveyance tunnel in argillaceous sandstone under water-weakening conditions".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 97(2020):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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