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Hydraulic property variations with depth in a loess mudstone landslide
Wei Liu1, Gaochao Lin2, Qingpeng Liu1
1Institute of Transportation, Inner Mongolia University, Hohhot, 010070, Inner Mongolia, China.
Scientific Reports
|May 14, 2024
Summary
Investigating loess-mudstone landslides reveals distinct soil water characteristic curves (SWCC) for loess and mudstone. SWCC in landslides shows patterns influenced by soil type and mudstone content, crucial for understanding landslide triggers.
Area of Science:
- Geotechnical Engineering
- Earth Sciences
- Soil Mechanics
Background:
- Landslides, particularly loess-mudstone landslides, are significant geohazards in loess-distributed areas.
- Moisture is a critical factor triggering these landslides, impacting soil stability and safety.
Purpose of the Study:
- To investigate the hydraulic properties of soils in an active loess-mudstone landslide.
- To analyze the soil water characteristic curves (SWCC) and their relationship with landslide dynamics.
Main Methods:
- Soil water characteristic curves (SWCC) were determined and fitted using the van Genuchten model.
- Experimental analyses included X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size distribution (PSD), and geotechnical tests.
- Hydraulic properties of loess, mudstone, and their mixtures were examined.
Main Results:
- Distinct SWCC distributions were observed for loess and mudstone.
- Loess SWCC showed similar patterns at various depths due to landslide activity.
- Loess-mudstone mixtures exhibited transitional SWCC, with increased water retention correlating to higher mudstone content.
Conclusions:
- The study provides insights into the hydraulic behavior of soils within loess-mudstone landslides.
- Findings align with geological observations, enhancing understanding of landslide mechanisms.
- Results are valuable for predicting and mitigating landslide risks in loess regions.
Keywords:
Hydraulic propertyLoess-mudstone landslideSoil water characteristic curveWater retention capacityMore Related Videos
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