Chemical weathering indices and how they relate to the mechanical parameters of granite regolith from southern China
文献类型：期刊论文
| 作者 | Liu, Xinyu1,2,3; Zhang, Xianwei2; Kong, Lingwei2; Wang, Gang2,3; Liu, Honghu4,5 |
| 刊名 | CATENA
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 216期号:-页码:- |
| 关键词 | Chemical weathering indices Soil erosion Granite regolith Mechanical properties Gully erosion Quantitative relationship |
| ISSN号 | 0341-8162 |
| 英文摘要 | In most cases, chemical weathering reduces the strength and stability of granite regolith and increases its water sensitivity. When combined with external agents such as climate, these alterations facilitate geomorphological evolution, such as gully erosion in hilly regions. The lack of fundamental understanding about how gully erosion forms have led to an increasing trend of gully erosion in recent years. Because the weathering-controlled properties of granite regolith have a significant effect on gully development, it is vital to assess the chemical weathering degree. However, despite extensive studies on quantifying weathering degree using chemical weathering indices, less is known about how these parameters are correlated with the mechanical properties of granite regolith. To this end, a typical weathering profile is established for granite in Jiangmen, China. This paper investigates the chemical weathering of granite, evaluates the appropriateness of previous chemical weathering indices, and correlates them with the mechanical parameters of granite regolith. Several suitable indices, including CIA, Bases/Al2O3, Bases/R2O3, ba(1), ba(3), CIW, I-mob, and PIA, are selected and correlated with the mechanical parameters. These indices apply well, with some scattering when they are correlated with the internal frictional angle of granite residual soil. This paper provides a comprehensive datset regarding the physical, mineralogical, petrographical, geochemical, and mechanical properties of granite regolith, and enhances the understanding of chemical weathering, especially its correlations with the mechanical properties of regolith. |
| 学科主题 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000831120800003 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35524]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.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, Yangling 712100, China 5.Changjiang River Scientific Research Institute, Changjiang Water Resource Commission, Wuhan 430010, China |
| 推荐引用方式 GB/T 7714 | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,et al. Chemical weathering indices and how they relate to the mechanical parameters of granite regolith from southern China[J]. CATENA,2022,216(-):-. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,Wang, Gang,&Liu, Honghu.(2022).Chemical weathering indices and how they relate to the mechanical parameters of granite regolith from southern China.CATENA,216(-),-. |
| MLA | Liu, Xinyu,et al."Chemical weathering indices and how they relate to the mechanical parameters of granite regolith from southern China".CATENA 216.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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