Field Study on the Soil Water Characteristics of Shallow Layers on Red Clay Slopes and Its Application in Stability Analysis

2019 ◽  
Vol 44 (5) ◽  
pp. 5107-5116 ◽  
Author(s):  
Yonghui Chen ◽  
Bingyi Li ◽  
Yuntao Xu ◽  
Yunpeng Zhao ◽  
Jie Xu
Keyword(s):  
Stability Analysis ◽  
Field Study ◽  
Soil Water ◽  
Red Clay ◽  
Water Characteristics ◽  
Clay Slopes

Soil-water characteristics and shear strength in constant water content triaxial tests on Yunnan red clay

2013 ◽  
Vol 20 (5) ◽  
pp. 1412-1419 ◽  
Author(s):  
Shao-kun Ma ◽  
Mao-song Huang ◽  
Ping Hu ◽  
Chao Yang
Keyword(s):  
Shear Strength ◽  
Water Content ◽  
Soil Water ◽  
Triaxial Tests ◽  
Red Clay ◽  
Water Characteristics

scholarly journals Soil-water characteristics of weathered crust elution-deposited rare earth ores

2021 ◽  
Vol 31 (5) ◽  
pp. 1452-1464
Author(s):  
Zhong-qun GUO ◽  
Jian-rong ZHOU ◽  
Ke-fan ZHOU ◽  
Jie-fang JIN ◽  
Xiao-jun WANG ◽  
...  
Keyword(s):  
Rare Earth ◽  
Soil Water ◽  
Water Characteristics ◽  
Weathered Crust

Measurement of Soil Suction and Soil-Water Characteristics of Bentonite-Sand Mixtures

2010 ◽  
Author(s):  
Pan Hu ◽  
Qing Yang ◽  
Maotian Luan
Keyword(s):  
Soil Water ◽  
Vapor Phase ◽  
Unsaturated Soils ◽  
Characteristic Curve ◽  
Phase Method ◽  
Soil Suction ◽  
Compacted Bentonite ◽  
Water Characteristics ◽  
Wide Range ◽  
High Level

The soil-water characteristic curve (SWCC) is a widely used experimental means for assessing fundamental properties of unsaturated soils for a wide range of soil suction values. The study of SWCC is helpful because some properties of unsaturated soils can be predicted from it. Nowadays, much attention has been paid to the behaviours of highly compacted bentonite-sand mixtures used in engineering barriers for high level radioactive nuclear waste disposal. It is very important to study the various performances of bentonite-sand mixtures in order to insure the safety of high-level radioactive waste (HLW) repository. After an introduction to vapor phase method and osmotic technique, a laboratory study has been carried out on compacted bentonite-sand mixtures. The SWCC of bentonite-sand mixtures has been obtained and analyzed. The results show that the vapor phase method and osmotic technique is suitable to the unsaturated soils with high and low suction.

Stability of Red-Clay Slopes Subjected to Different Durations of Rainfall

2017 ◽  
pp. 533-540 ◽  
Author(s):  
Kaixi Xue ◽  
Binod Tiwari ◽  
Beena Ajmera ◽  
Yanxiang Hu
Keyword(s):  
Red Clay ◽  
Clay Slopes

scholarly journals Field Test Research on Red Clay Slope under Atmospheric Action

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Kaisheng Chen
Keyword(s):  
Internal Friction ◽  
Water Content ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Friction Angle ◽  
Internal Friction Angle ◽  
Red Clay ◽  
Failure Characteristics ◽  
Clay Slopes

By embedding water content sensors and pore water pressure sensors inside the red clay slope on-site in Guiyang, Guizhou, shear tests were performed on soil samples at different depths of the slope under different weather. The changes of water content, pore water pressure, and shear strength index of the slope inside the slope under the influence of the atmosphere were tracked and tested, and the failure characteristics and evolution of the red clay slope were analyzed. It is believed that the depth of influence of the atmosphere on red clay slopes is about 0.7 m, rainfall is the most direct climatic factor leading to the instability of red clay slopes, and the evaporation effect is an important prerequisite for the catastrophe of red clay slopes. The cohesion and internal friction angle of the slope soil have a good binary quadratic function relationship with the water content and density. The water content and density can be used to calculate the cohesion and internal friction angle. Failure characteristics of red clay slopes: the overall instability failure is less, mainly surface failure represented by gullies and weathering and spalling, and then gradually evolved into shallow instability failure represented by collapse and slump. The damage evolution law is as follows: splash corrosion and surface corrosion stage⟶ fracture development stage⟶ gully formation stage⟶ gully development through stage⟶ local collapse stage⟶ slope foot collapse stage.

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