Cohesion variation during instability evolution of disaster medium in mud inrush of mountain tunnel
文献类型：期刊论文
| 作者 | Yang, Teng; Zhang, Qing-song; Zhang, Xiao; Li, Xiang-hui; Zhang, Jia-qi; Sun, Yu-xue; Li, Zhuang |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:11页码:2519-2531 |
| 关键词 | Cohesion Disaster medium Graded soil Structure model Void ratio Shear test |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-019-5651-0 |
| 文献子类 | Article |
| 英文摘要 | Mud inrush in mountain tunnel is an independent geological hazard type different from water inrush, landslide and debris flow. The intrinsic factor of mud inrush is the instability failure of disaster medium. Its essence is that when the cohesion decreases gradually with the increase of void ratio to the point where the movement of soil particles cannot be restricted, soil particles and groundwater form slurry and gush out. Thus, accurate calculation of cohesion with variable void ratios is crucial for analyzing the reliability of disaster medium. In this study, the disaster medium was regarded as graded soil and a structural model was established wherein soil particles were simplified as cubes and the inter-particle pores were represented by the clearance between cubes. On the basis of the structure model of disaster medium, a function between the soil particle distance and void ratio was derived. Cohesion is equivalent to the resultant force between soil particles per unit area; thus, a cohesion function was derived in which the void ratio is the main variable. This function considers the influence of gradation characteristics on cohesion variation and is generally applicable to various types of disaster medium. A series of direct shear tests were carried out to determine the cohesion variation for different types of disaster medium with variable void ratios. By comparing the variation of cohesion obtained through direct shear tests with those deduced by the proposed cohesion function, we verified the validity and general applicability of the cohesion function. It is of great significance because the cohesion function can accurately predict the variation of cohesion by using the void ratio, and effectively evaluate the possibility of mud inrush according to the initial mechanical properties of disaster medium. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000495245200005 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46610]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.11 |
| 推荐引用方式 GB/T 7714 | Yang, Teng,Zhang, Qing-song,Zhang, Xiao,et al. Cohesion variation during instability evolution of disaster medium in mud inrush of mountain tunnel[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(11):2519-2531. |
| APA | Yang, Teng.,Zhang, Qing-song.,Zhang, Xiao.,Li, Xiang-hui.,Zhang, Jia-qi.,...&Li, Zhuang.(2019).Cohesion variation during instability evolution of disaster medium in mud inrush of mountain tunnel.JOURNAL OF MOUNTAIN SCIENCE,16(11),2519-2531. |
| MLA | Yang, Teng,et al."Cohesion variation during instability evolution of disaster medium in mud inrush of mountain tunnel".JOURNAL OF MOUNTAIN SCIENCE 16.11(2019):2519-2531. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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