Fluid-Structure Coupling Creep Characteristics of Red-Bed Soft Rock in South China
文献类型：期刊论文
| 作者 | Zhang, Shuguang; Yun, Xiao; Song, Yu; Liu, Wenbo; Yang, Li |
| 刊名 | WATER
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 14期号:24 |
| 关键词 | creep characteristics fluid-structure interaction creep model red-bed soft rock seepage pressure |
| 英文摘要 | In order to study the creep characteristics and mechanism of red-bed soft rock under the water-rock interaction, fluid-structure coupling triaxial compression tests and creep tests under stepwise loading were carried out. Furthermore, the influences of seepage pressure and stress on creep deformation, long-term strength, Poisson's ratio, and seepage velocity were analyzed. According to the experimental results, the influence of seepage on the creep of soft rock cannot be ignored. The results show that the seepage leads to a decrease in triaxial strength and long-term strength, and an increase in instantaneous deformation and creep deformation. The failure mode of triaxial compression changes from shear failure to tension-shear conjugate failure, whereas the long-term strength of fluid-structure coupling creep is 60%similar to 70% of the triaxial strength. When the stress level and seepage pressure are relatively small, the Poisson's ratio of creep increases with the increase of seepage pressure, and the radial creep deformation response lags behind the axial creep deformation. However, at a high stress level and osmotic pressure, the Poisson's ratio and seepage velocity increase rapidly, and the duration of the accelerated creep is obviously shortened. Through the analysis of the influence of seepage pressure on the seepage velocity, with the increase in the seepage velocity, the seepage velocity changes and fluctuations are more obvious, which further confirms the damaging effect of seepage pressure and erosion on the internal structure. In the field monitoring of actual engineering, the rapid change of seepage velocity can be used as a precursor signal to predict the instability. Therefore, the water-rock interaction cannot be ignored in the analysis of mechanical properties and long-term stability of red-bed soft rocks. |
| 学科主题 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000902863000001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34954]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Guilin University of Technology; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Zhang, Shuguang,Yun, Xiao,Song, Yu,et al. Fluid-Structure Coupling Creep Characteristics of Red-Bed Soft Rock in South China[J]. WATER,2022,14(24). |
| APA | Zhang, Shuguang,Yun, Xiao,Song, Yu,Liu, Wenbo,&Yang, Li.(2022).Fluid-Structure Coupling Creep Characteristics of Red-Bed Soft Rock in South China.WATER,14(24). |
| MLA | Zhang, Shuguang,et al."Fluid-Structure Coupling Creep Characteristics of Red-Bed Soft Rock in South China".WATER 14.24(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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