soil slopes
Recently Published Documents


TOTAL DOCUMENTS

395
(FIVE YEARS 115)

H-INDEX

33
(FIVE YEARS 7)

CATENA ◽  
2022 ◽  
Vol 210 ◽  
pp. 105865
Author(s):  
J.H. Yang ◽  
H.Q. Liu ◽  
J.P. Zhang ◽  
A.E. Rahma ◽  
T.W. Lei

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhongnian Yang ◽  
Jianhang Lv ◽  
Wei Shi ◽  
Chao Jia ◽  
Chu Wang ◽  
...  

AbstractThis paper presents an experimental investigation on the effect of freeze–thaw cycling on expansive soil slopes with different initial moisture contents. Clay soil from Weifang, China, was remolded and selected to build the expansive soil slope for the indoor slope model tests. A total of five freeze–thaw cycles were applied to the three expansive soil slopes with different moisture contents ranging from 20 to 40%. Variations of the crack developments, displacements, soil pressures and moisture contents of the expansive soil slope with different initial moisture contents during the freeze–thaw cycling were reported and discussed. The results indicate that higher moisture contents can slow the development of cracks and that the soil pressure increases with decreasing temperature. The soil pressure of slope decreases after freeze–thaw cycle, and the change amplitude of soil pressure after freeze–thaw is proportional to water content. The slopes with a moisture content of 20% and 30% shrinks during freezing and expands during thawing, which was named ES-FSTE Model, while the slope with a 40% moisture content shows the opposite behavior. During freeze–thaw cycles, moisture migrates to slope surface. As initial moisture contents increase, the soil heat transfer rate and bearing capacity decreases after five freeze–thaw cycling.


Author(s):  
P. G. D. S. Jayawickrama ◽  
D. M. H. H. Jayawardana ◽  
M. N. C. Samarawickrama ◽  
D. I. Fernando

2021 ◽  
pp. 145-155
Author(s):  
Ammavajjala Sesha Sai Raghuram ◽  
B. Munwar Basha ◽  
Arif Ali Baig Moghal

2021 ◽  
Author(s):  
Manyu Wang ◽  
Yong Liu ◽  
Lu Yang ◽  
Jing Wu ◽  
Guilin Niu

In recent years, more considerable attentions are paying on the hazards of large-scale landslides induced by heavy rainfall. However, the heterogeneity in hydraulic properties of soils may affect the seepage pattern of water infiltrated into soil slopes. Inspired by this fact, this paper aimed to evaluate the effect of the spatial variability in hydraulic conductivity on failure mechanism of an unsaturated soil slope subjected to rainfall infiltration, being implemented in the framework of a transient coupled hydro-mechanical analysis. The concept of random field was adopted to model the spatial randomness of saturated hydraulic conductivity ks following a uniform distribution. The finite element method was then incorporated to conduct Monte Carlo simulations. The resultant findings show that the mode of shallow slope failure is more likely to occur than the deep one due mainly to the highly variable distribution of ks near slope surface. Note that the decrease in the effective stress of soils resulting from the increase of pore water pressure is the most critical reason for the occurrence of slope failure. In addition, from the random element analyses results, it indicates that the value of Qari calculated by performing a deterministic analysis based on arithmetic average value kari gives a prediction of flow rate on average, but the calculated Qmax based on maximum value kmax provides a more conservative assessment on total flow rate across soil slope, which can offer useful suggestions for practitioners to take available measures to drain in advance.


Sign in / Sign up

Export Citation Format

Share Document