The Shrink-Swell Process of the Granite Residual Soil with Different Weathering Degree in a Gully System in Southern China
文献类型：期刊论文
| 作者 | Liu, Honghu2,3; Liu, Jing2; Zhang, Xianwei1; Liu, Xinyu1 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 12期号:21页码:- |
| 关键词 | water content clay minerals dry-wet cycles shrinking swelling |
| 英文摘要 | The soil shrink-swell phenomenon produces crack networks and slope instability. However, few studies have involved the continuous shrink-swell process of granite residual soils. The objective of the study is to explore the shrink-swell process of weathered granite soils and its effects on gully development in southern China. The bulk density, soil water content (SWC), shrink-swell ratio (SSR), clay mineral content, and mechanical composition, etc., of soil samples from five soil layers (at depths of 0.3 m, 3.0 m, 7.0 m, 12.0 m, and 16.0 m) along a profile in Yudu County was analyzed. After quantifying the soil properties at different soil depths, we analyzed these data statistically in an effort to identify strong parametric relationships. The results indicated that some properties such as bulk density and shear stress increased with soil depth, while other soil properties, such as plasticity index and liquid limit, were inversely related to depth. Soil cohesion, the angle of internal friction, and shear stress were closely related to the SWC. Every 1% decrease in the SWC resulted in a shear stress reduction of 6.62 kPa. The SSR values exhibited significant variation between the three dry-wet cycles and were closely related to the bulk density values of our kaolin and montmorillonite samples. As an environmental factor, the SWC can trigger changes in internal soil properties such as shear stress and the SSR. Using these data and observations made during our field survey, it can be proposed that continuous shrink-swell variation in deep granite-weathering crust can result in crack formation and gully erosion. It can be inferred that crack development velocity and gully retreat rate may be affected by the soil's shrink-swell process. Consequently, this information provides insight to understanding the mechanism of gully development in southern China. |
| 学科主题 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000883437800001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35268]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Xinong Rd. 26, Yangling 712100, China 3.Changjiang River Scientific Research Institute, Changjiang Water Resource Commission, Wuhan 430010, China |
| 推荐引用方式 GB/T 7714 | Liu, Honghu,Liu, Jing,Zhang, Xianwei,et al. The Shrink-Swell Process of the Granite Residual Soil with Different Weathering Degree in a Gully System in Southern China[J]. APPLIED SCIENCES-BASEL,2022,12(21):-. |
| APA | Liu, Honghu,Liu, Jing,Zhang, Xianwei,&Liu, Xinyu.(2022).The Shrink-Swell Process of the Granite Residual Soil with Different Weathering Degree in a Gully System in Southern China.APPLIED SCIENCES-BASEL,12(21),-. |
| MLA | Liu, Honghu,et al."The Shrink-Swell Process of the Granite Residual Soil with Different Weathering Degree in a Gully System in Southern China".APPLIED SCIENCES-BASEL 12.21(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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