气候变化领域集成服务门户(CCPortal): Slope stability analysis of the Rangamati District using geotechnical and geochemical parameters

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DOI	10.1007/s11069-021-04750-5
	Slope stability analysis of the Rangamati District using geotechnical and geochemical parameters
	Islam M.S.; Begum A.; Hasan M.M.
发表日期	2021
ISSN	0921030X
起始页码	1659
结束页码	1686
卷号	108 期号:2
英文摘要	Landslide and human mortality have been a common phenomenon in the Rangamati district over the past several years. This study examined the geotechnical properties (e.g., grain size analysis, plasticity index, liquid limit index) and geochemical properties (e.g., erodibility index, weathering index, K factor value, redness rating) of the soil in order to determine the causes and vulnerability of the landslide. Three types of soils (sand, silt and clay) have been classified based on grain-size distribution for geotechnical and geochemical analyses. The geotechnical properties of the soils examined indicate that most soils are sandy loams, of poor quality and plastic in nature. Geochemical properties show that the weathering index is higher for the clayey soil which is about 3.65 and the erosion index is higher found in the silty soil of ~ 6.7. The stability index is very low (~ 0.06), and the K factor value is higher 0.046 for the non-cohesive sandy soil which indicates high susceptibility of landslide. Numerical analysis based on geotechnical properties of the soil indicates that the steep slopes are even stable at the dry condition, while it is in risk at wet condition. A bio-engineering approach was proposed which showed that local plants could withstand and render stable in the barred slope in a few years. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Erodibility indices and elemental composition Grain size analysis Rangamati Weathering indices
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206296
作者单位	Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh; Department of Geography and Environment, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
推荐引用方式 GB/T 7714	Islam M.S.,Begum A.,Hasan M.M.. Slope stability analysis of the Rangamati District using geotechnical and geochemical parameters[J],2021,108(2).
APA	Islam M.S.,Begum A.,&Hasan M.M..(2021).Slope stability analysis of the Rangamati District using geotechnical and geochemical parameters.Natural Hazards,108(2).
MLA	Islam M.S.,et al."Slope stability analysis of the Rangamati District using geotechnical and geochemical parameters".Natural Hazards 108.2(2021).