Variations in hydraulic properties of collapsible loess exposed to wetting and shearing

Wang, Jiading; Zhang, Dengfei; Zhang, Yongshuang; Hui, Chen; Ma, Weiqian

doi:10.1007/s11440-021-01427-y

Cited by 9 publications

(1 citation statement)

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“…Furthermore, the values are greater than the typical permeability coefficient values reported for intact Malan loess in the literature, which is around 0.2 mm/min 55 . This observation can be primarily attributed to stress release resulting from landslides and subsequent erosion 4 , 56 , leading to a looser structure of the loess and reducing differences along the depth. This finding aligns well with other experimental results obtained in this study.…”

Section: Test Results and Discussionmentioning

confidence: 99%

Hydraulic property variations with depth in a loess mudstone landslide

Liu,

Lin,

Liu

et al. 2024

Sci Rep

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In areas where loess is distributed, landslides represent a significant geohazard with severe implications. Among these events, loess-mudstone landslides are particularly prevalent, posing substantial risks to the safety and property of local residents, and moisture plays a pivotal role as a key factor in causing these disasters. In this study, the hydraulic properties of the soils along the longitudinal section of an ongoing loess-mudstone landslide are investigated through the variation of soil water characteristic curves, which are subsequently fitted by utilizing van Genuchten model. Moreover, a comprehensive experimental investigation was conducted on the loess, mudstone, and loess-mudstone mixtures to facilitate analysis, including X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) observation, particle size distribution (PSD) analysis, along with fundamental geotechnical tests for parameter determination. It is found that mudstone and loess have distinct SWCC distribution. The SWCC of loess at various depths exhibits a similar distribution pattern due to the occurrence of landslide. The SWCC distribution of loess-mudstone mixture displays a transitional trend between the SWCC of mudstone and that of loess, and the water retention capacity increases as the mudstone content increases. The experimental findings have demonstrated notable agreement between each other and exhibited a satisfactory level of concurrence with the observed phenomena in geological surveys.

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Section: Test Results and Discussionmentioning

confidence: 99%