Analysis method of radon release during underground cavern excavation
文献类型：期刊论文
| 作者 | Zhang, Chuanqing3,4; Li, Lingyu3,4; Tao, Zhigang1,2; Xie, Qiming3,4 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 154页码:13 |
| 关键词 | Underground engineering Radon release characteristics Rock fracture Size effect DFN-CDEM |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2024.106062 |
| 英文摘要 | Radon release during underground engineering excavation is mainly from the newly generated fracture surfaces of the rock mass rupture, and the accurate prediction of radon release depends on the quantitative characterization of the rock mass rupture. To examine the correlation between radon release and rock mass rupture, a series of triaxial compression radon release tests were carried out and the effective radon exhalation rate (J(eff)) was defined, a linear function of rock fracture area and radon release was developed. Based on the continuous-discontinuous element method (CDEM), a quantitative equation between rock fracture degree (D) and radon release by numerical model for triaxial compression tests was obtained. Subsequently, a synthetic rock mass (SRM) method combining discrete fracture network (DFN) model and CDEM was used to analyze the scale dependence of radon release from rock mass rupture, and the representative element volume (REV) size of the radon release from rock mass rupture was determined. Radon release increases exponentially with increasing sample size. Radon release increases and then decreases with the increase of joint dip angle, however, radon release increases with the increase of joint trace length amplification factor. Additionally, an underground powerhouse excavation model to derive the evolution of radon release from the surrounding rock with the number of excavation layers was established. The results of this research can provide a basis for radon pollution control during underground engineering excavation. |
| 资助项目 | Key Projects of the Yalong River Joint Fund of the National Natural Science Foundation of China[U1865203] ; Open Research Fund of State Key Laboratory of Geo-mechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z020007] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001314146700001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42534]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Lingyu |
| 作者单位 | 1.State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China 2.China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Chuanqing,Li, Lingyu,Tao, Zhigang,et al. Analysis method of radon release during underground cavern excavation[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2024,154:13. |
| APA | Zhang, Chuanqing,Li, Lingyu,Tao, Zhigang,&Xie, Qiming.(2024).Analysis method of radon release during underground cavern excavation.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,154,13. |
| MLA | Zhang, Chuanqing,et al."Analysis method of radon release during underground cavern excavation".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 154(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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