Numerical Analysis on Slope Stability under Variations of Reservoir Water Level

Liao, Hongjian; Ying, Jie; Shi-hang, Gao; Sheng, Quan Z.

doi:10.1007/3-540-28680-2_39

Cited by 10 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically in coastal regions, slope failures may have a number of contributing factors such as (i) sudden increase and=or decrease (i.e., drawdown) of water level with the tidal waves, tsunamis, rain, high groundwater, and other meteorological factors which all cause an increase in saturation in coastal slopes; (ii) physical disturbance of slope by wave impacts (TRB 1996;Liao et al 2005); and (iii) erosion of the toe from wave and wind actions.…”

Section: Introductionmentioning

confidence: 99%

Ocean Rise Instability in Coastal Clay Slopes and Possible Countermeasures: A Centrifuge Modeling Study

Pamuk

Zimmie

Adalier

et al. 2014

Marine Georesources & Geotechnology

View full text Add to dashboard Cite

Increase in saturation in natural clayey slopes along coastal zones as a result of tsunamis or storm surges may cause flow slides or failures. One of the common treatments is to increase the overall stability by soil replacement and=or re-compaction, which is often difficult to implement, expensive, and, most importantly, damages the natural vegetation. In this paper, remedial effectiveness of a relatively economical and environmentally friendly method involving insertion of geotextile strips with drainage capability into natural clayey slopes is evaluated through a series of centrifuge tests. The test results demonstrate the effectiveness of the employed technique to increase the stability of slopes and their drainage capability as well as to reduce the deformations under surcharge loadings.

show abstract

Section: Introductionmentioning

confidence: 99%

Ocean Rise Instability in Coastal Clay Slopes and Possible Countermeasures: A Centrifuge Modeling Study

Pamuk

Zimmie

Adalier

et al. 2014

Marine Georesources & Geotechnology

View full text Add to dashboard Cite

show abstract

“…When the water levels of a reservoir landslide change, the internal seepage field near the average water storage level is frequently disturbed by frequent alternation between wetting and drying, and structure and mechanical strength deteriorate continuously; this effect, in turn, increases the possibility of reservoir landslides [10,11]. Therefore, the corresponding law of water distribution and the migration characteristics of landslides must be studied with regard to hydrodynamic conditions [12].…”

Section: Introductionmentioning

confidence: 99%

Water Distribution Characteristics of Slopes Based on the High-Density Electrical Method

Liu

Xiong

et al. 2023

Water

View full text Add to dashboard Cite

Measuring the water content of slopes is essential because the distribution and migration of water within slopes are important factors of landslide instability. In this study, the relationship between the resistivity, volumetric temperature water content and temperature of landslide soil was modelled. The model was validated by indoor landslide model tests and field tests in Baijiabao to investigate the effect of reservoir water levels on the water content of landslide slopes. Test results showed that, as the reservoir levels rose, the water content of the landslide soil increased. Moreover, a good correspondence between the measured results and the inversion results based on the resistivity data was obtained by using the high-density electrical method in combination with the developed model of the relationship between resistivity, volumetric water content and temperature, indicating that the proposed method is reliable and practicable in hydrodynamic landslide monitoring.

show abstract

“…Meanwhile, stability problems of partially submerged slopes are of great concern [10][11][12][13][14]. Studies in this field of research can be roughly grouped into three categories: designing engineering geological models [2,5,8,[15][16][17][18], material property studies [19,20] and formulating mathematical models [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction

Zou

et al. 2017

Remote Sensing

View full text Add to dashboard Cite

Forty-six ancient Tibetan star-shaped towers and a village are located on a giant slope, which would be partially flooded by a nearby reservoir currently under construction. Ground survey, boreholes, and geophysical investigations have been carried out, with results indicating that the slope consists of loose deposit with a mean thickness of approximately 80 m in addition to an overlying bedrock of micaceous schist and phyllite. Ground survey and Interferometric Synthetic Aperture Radar (InSAR) indicated that the slope is experiencing some local deformations, with the appearance of cracks and occurrence of two small landslides. Through using borehole logs with the knowledge of the regional geological background, it can be inferred that the loose deposit is a result of an ancient deep-seated translational landslide. This landslide was initiated along the weak layer of the bedding plane during the last glaciation in the late Pleistocene (Q 3 ) period, which was due to deep incision of the Dadu River at that time. Although it has not shown a major reaction since the ancient Tibetan star-shaped towers have been built (between 200 and 1600 AD), and preliminary studies based on geological and geomorphological analyses incorporated with InSAR technology indicated that the landslide is deformable. Furthermore, these studies highlighted that the rate of deformation is gradually reducing from the head to the toe area of the landslide, with the deformation also exhibiting relationships with seasonal rainstorms. The state of the toe area is very important for stabilizing a landslide and minimizing damage. It can be expected that the coming impoundment of the reservoir will increase pore pressure of the rupture zone at the toe area, which will then reduce resistance and accelerate the deformation. Future measures for protection of the slope should be focused on toe erosion and some bank protection measures (i.e., rock armor) should be adopted in this area. Meanwhile, some long-term monitoring measures should be installed to gain a deep understanding on the stability of this important slope.

show abstract

Numerical Analysis on Slope Stability under Variations of Reservoir Water Level

Cited by 10 publications

References 5 publications

Ocean Rise Instability in Coastal Clay Slopes and Possible Countermeasures: A Centrifuge Modeling Study

Ocean Rise Instability in Coastal Clay Slopes and Possible Countermeasures: A Centrifuge Modeling Study

Water Distribution Characteristics of Slopes Based on the High-Density Electrical Method

A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction

Contact Info

Product

Resources

About