Experimental Study on Mechanical Properties of Highly Swelling Soft Rocks in the Yanji Basin, Northern China
文献类型：期刊论文
| 作者 | Zhao, Rong2; Wu, Xiong2; Zhu, Ge3; Wang, Xiaolei1; Mei, Aoshuang4; Zhang, Xiao2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2022-01-07 |
| 页码 | 17 |
| 关键词 | Swelling soft rocks Mechanical properties Optimum moisture content Yanji Basin |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-021-02754-y |
| 通讯作者 | Wu, Xiong(wuxiong@cugb.edu.cn) |
| 英文摘要 | The swelling characteristics of swelling soft rocks (SSRs) in the Yanji Basin, Northeastern China, have posed huge challenges to the construction of local highways. Based on the geological background, the swelling properties and strength characteristics of undisturbed and reconstructed SSRs, especially the constitutive relationship, are studied, which is of great significance to engineering practice. In this study, X-ray diffraction and scanning electron microscopy were used to determine SSRs' mineral composition and microstructural characteristics. Swelling test, shear test, and unconfined compression test were used to identify the relationship between different water content of SSRs and free swell ratio (delta(e)), swelling pressure (P-e), stress-strain characteristics, and strength, respectively. The results showed that (1) the mixed layer content of illite-montmorillonite in SSRs reached 95%. (2) delta(e) and P-e were negatively linearly and exponentially related to the initial moisture content (omega(s)), respectively. Rapid and intense swelling mainly occurred at the initial swelling stage. (3) omega(s) were negatively linearly related to the shear stress (tau), cohesion (c) and the angle of internal friction (phi). In addition, SSRs with lower omega(s) suffered "strain softening" failure, while SSRs with higher omega(s) suffered "strain hardening" failure. (4) delta(e) and the moisture content after swelling were both linearly related to the logc and log phi. Furthermore, the optimum moisture content (21-26%) of SSRs of the Yanji Basin's project was determined for the first time. These results have already been applied to engineering practice in the Yanji Basin and other regions where SSRs are widely distributed. |
| WOS关键词 | SHEAR-STRENGTH ; EXPANSIVE SOIL ; BEHAVIOR ; PRESSURE ; PREDICTION ; HIGHWAY ; CYCLES ; MODEL ; DRY |
| 资助项目 | National Natural Science Foundation of China[42002253] ; Inner Mongolia Science and Technology Major Project[2020ZD0020-1] ; Open Project Program of the Shandong Provincial Lunan Geo-engineering Exploration Institute[LNY2020-Z01] ; Natural Science Foundation of Hebei Province[E2020402087] ; National Key Research and Development Program of China[2018YFC0406404] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000740190000002 |
| 出版者 | SPRINGER WIEN |
| 资助机构 | National Natural Science Foundation of China ; Inner Mongolia Science and Technology Major Project ; Open Project Program of the Shandong Provincial Lunan Geo-engineering Exploration Institute ; Natural Science Foundation of Hebei Province ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/169316]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wu, Xiong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100083, Peoples R China 2.China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China 3.China Geol Survey, Dept Hydrogeol & Environm Geol, Beijing 100011, Peoples R China 4.China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Rong,Wu, Xiong,Zhu, Ge,et al. Experimental Study on Mechanical Properties of Highly Swelling Soft Rocks in the Yanji Basin, Northern China[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022:17. |
| APA | Zhao, Rong,Wu, Xiong,Zhu, Ge,Wang, Xiaolei,Mei, Aoshuang,&Zhang, Xiao.(2022).Experimental Study on Mechanical Properties of Highly Swelling Soft Rocks in the Yanji Basin, Northern China.ROCK MECHANICS AND ROCK ENGINEERING,17. |
| MLA | Zhao, Rong,et al."Experimental Study on Mechanical Properties of Highly Swelling Soft Rocks in the Yanji Basin, Northern China".ROCK MECHANICS AND ROCK ENGINEERING (2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
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