Influences of water on the microstructure and mechanical behavior of the Xigeda formation
文献类型：期刊论文
| 作者 | Fu, Xiaodong1,2; Du, Yuxiang3,4; Sheng, Qian1,2; Zhang, Zhenping5; Huang, Juehao1,2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2022 |
| 卷号 | 81期号:1页码:17 |
| ISSN号 | 1435-9529 |
| 关键词 | Xigeda formation Water content Microstructure Mechanical behavior Strength |
| DOI | 10.1007/s10064-022-02567-5 |
| 英文摘要 | As a typical hard soil and soft/weak rock, the Xigeda formation is a set of Cenozoic lacustrine semi-rock discontinuously distributed in south-western China. Engineering practice shows that water exerts a significant influence on the mechanical properties of the Xigeda formation. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and triaxial compression tests were conducted by means of in situ sampling of the Xigeda formation in Zhaizi village along the Jiasha River. The mineral composition and microstructure were determined, the deformation and failure mechanisms were investigated, and influences of the water content on both deformation and strength indices were discussed. The results show that (a) the Xigeda formation has a characteristic weakly cemented structure, which differs from that of soil and rock, and this cemented structure is easily damaged under saturated conditions; (b) with increasing water content, both average modulus and shear strength of the Xigeda formation decrease significantly, and influence of water content on peak strength is much greater than that on residual strength; and (c) in the range of tested conditions (w =17.79 similar to 30.83%, sigma(3) = 200 similar to 800 kPa), both the peak and residual strengths meet the Mohr-Coulomb criterion. The results can provide an experimental basis and mechanism informing engineering practice in the Xigeda formation. |
| 资助项目 | Youth Innovation Promotion Association CAS[2021325] ; National Natural Science Foundation of China[52179117] ; International Partnership Program of Chinese Academy of Sciences[131551KYSB20180042] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000742027500002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/30780]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Fu, Xiaodong |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Jianghan Univ, Hubei Key Lab Blasting Engn, Wuhan 430056, Hubei, Peoples R China 4.Jianghan Univ, Hubei Wuhan Inst Explos Sci & Blasting Technol, Wuhan 430056, Hubei, Peoples R China 5.Shenyang Univ Technol, Sch Architecture & Civil Engn, Shenyang 110870, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu, Xiaodong,Du, Yuxiang,Sheng, Qian,et al. Influences of water on the microstructure and mechanical behavior of the Xigeda formation[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(1):17. |
| APA | Fu, Xiaodong,Du, Yuxiang,Sheng, Qian,Zhang, Zhenping,&Huang, Juehao.(2022).Influences of water on the microstructure and mechanical behavior of the Xigeda formation.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(1),17. |
| MLA | Fu, Xiaodong,et al."Influences of water on the microstructure and mechanical behavior of the Xigeda formation".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.1(2022):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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