Evaluation of EDZ characterization technology for URL based on field investigation at BET
文献类型：期刊论文
| 作者 | Wang, Guibin1; Wang, Ju2; Chen, Shiwan1,3; Chen, Liang2 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2024 |
| 卷号 | 143页码:11 |
| 关键词 | Excavation damage zone Acoustic emission Radar HLW geological repository EDZ characterization |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2023.105168 |
| 英文摘要 | Detailed characterization of the Excavation Damage Zone (EDZ) is an important issue for the high-level radioactive waste (HLW) geological disposal engineering, which is closely related to the long-term safety of the HLW repository. With drill -blast experiment in Beishan Exploration Tunnel (BET, a platform for the field experiment and validation of potential technologies used for China's HLW disposal engineering in crystalline rock), systematic field tests were carried out to evaluate the suitability of techniques in characterizing EDZ, and to study EDZ characteristic in crystalline tunnel. A series of investigation technologies were used to delineate EDZ and to examine the process of its formation, which includes: p -wave velocity measurement, ground penetrating radar (GPR), acoustic emission (AE) monitoring and borehole televiewer. P -wave velocity measurement along borehole reveal that wave velocity decreased significantly (more than 10%) in 30 cm to 50 cm from the excavation surface, and this zone is defined as EDZ. Clear images of borehole televiewer were obtained, which is helpful for EDZ delineation. GPR and borehole radar were also used for EDZ delineation. Strong reflection signals were detected in the range of 10 cm to 25 cm by GPR with high frequency antenna, indicating significant changes of physical properties of rock -mass in the zone, which is defined as Highly Damaged Zone (HDZ). Moreover, the formation process of EDZ induced by blast in crystalline rock tunnel was analyzed using AE monitoring. Damage process of surrounding rock was divided into blasting damage stage and progressive damage stage. AE events location show the induced cracking activities were clustering within 30 cm to 100 cm from excavation surface. With the experience from field investigation and result analysis, the feasibility and suitability of the techniques for EDZ characterization is evaluated. Finally a specialized EDZ characterization technique system is proposed for underground research laboratory construction in crystalline host rock in Beishan area. |
| 资助项目 | State Administration of Science, Technology and Industry for National Defence, PRC[FZ1402] ; National Natural Science Foundation of China-Youth Foud[41902301] ; Open research fund of state key laboratory of geo-mechanics and geotechnical engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z018023] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001166245900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40698]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Shiwan |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China 2.Beijing Res Inst Uranium Geol, CNNC Key Lab Geol Disposal High level Radioact Was, Beijing 100029, Peoples R China 3.Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guibin,Wang, Ju,Chen, Shiwan,et al. Evaluation of EDZ characterization technology for URL based on field investigation at BET[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2024,143:11. |
| APA | Wang, Guibin,Wang, Ju,Chen, Shiwan,&Chen, Liang.(2024).Evaluation of EDZ characterization technology for URL based on field investigation at BET.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,143,11. |
| MLA | Wang, Guibin,et al."Evaluation of EDZ characterization technology for URL based on field investigation at BET".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 143(2024):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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