Numerical Simulation Analysis of Reservoir Bank Fractured Rock-Slope Deformation and Failure Processes

Maihemuti, Balati; Wang, Enzhi; Tumaerbai, Hudan; Xu, Qinqin

doi:10.1061/(asce)gm.1943-5622.0000533

Cited by 36 publications

(16 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, numerical simulation methods have been widely applied to predict the rate and scope of bank collapse under the action of waves [30]. The discrete element method is commonly used to simulate the wave loads acting on the bank slope [31], as proposed by Cundall [32]. Based on the structural characteristics of the rock mass at the bank collapse site and wave elements during failure, three models were developed to explore the influence mechanism of the wave cyclic load on bank collapse.…”

Section: Laboratory Testingmentioning

confidence: 99%

Influence of Wind-Generated Wave Action on Mountain Reservoir Bank Collapse: A Case Study at the Lancang River, Western China

2022

View full text Add to dashboard Cite

Slopes facing reservoir water often collapse, affecting reservoir capacity. It is important to understand the factors affecting such collapses and predict the locations of collapse after impoundment for practical purposes. However, the mechanism of bank collapse in mountainous areas after reservoir impoundment remains unclear. To address this issue, field geotechnical property surveys, laboratory tests, and numerical simulations were employed to evaluate bank collapse susceptibility. The results showed that (i) bank collapse mainly occurs in slopes with a small cohesion and internal friction angle of less than 30°; (ii) the main effects of wave action on bank collapse are scour, erosion, and cyclic impact on the bank slope: wave erosion occurs in the bank slope with a wave height of less than 1.0 m, cohesion of less than 90 kPa, and slope angle of less than 30°, and wave impaction mainly occurs at the area with a wave height of more than 2.0 m and a slope angle of more than 30°; (iii) for valley reservoirs, softening of water on the slope rock and soil mainly reduces cohesion, which commonly occurs within 30 days; the cyclic action of wave impact load mainly damages the structure and reduces the internal friction angle. The influence of waves on bank collapse is mainly related to the wave height and wave velocity. The antiwave impact broken energy of rock and soil is an important index to evaluate whether bank collapse occurs in the long term, which is related to the strength, structure, and impact resistance. The present research is helpful to better understand the mechanism and evolution process of reservoir bank collapse.

show abstract

Section: Laboratory Testingmentioning

confidence: 99%

Influence of Wind-Generated Wave Action on Mountain Reservoir Bank Collapse: A Case Study at the Lancang River, Western China

2022

View full text Add to dashboard Cite

show abstract

“…He et al [23] developed a predictive model for the dynamic incremental displacement considering the impact of the groundwater level. Maihemuti et al [24] surveyed the impact of the velocity of the periodic reservoir water level changes on the landslide stability. Sun et al [25,26] used a genetic algorithm to consider the deformation and failure mechanism of the landslide affected by rainfall and reservoir water level.…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area

et al. 2021

View full text Add to dashboard Cite

The stability of the reservoir bank landslide is affected by a variety of external factors, and the fluctuation of reservoir water level is one of the important influencing factors. The Erdaohe landslide is a typically colluvial landslide in the Three Gorges Reservoir area with periodic reservoir water level fluctuations. According to landslide displacement data, the displacement of the Erdaohe landslide exhibits the significantly stepwise feature. Its failure mechanism was analyzed using strength reduction method by the FLAC3D package in the case of reservoir water level changes. The results indicate that the hydrodynamic pressure has an important impact on the initialization of the landslide failure. When reservoir water level rises rapidly or maintains constant at the lower level, the landslide stability would be higher. When the reservoir water level decreases rapidly or maintains constant at the higher level, the landslide stability will be smaller. When the reservoir water level was in the lowest elevation, the factor of safety (FS) reached the minimum value of 1.11. Findings in this paper can provide guidelines for the risk assessment of colluvial landslides.

show abstract

“…Many researchers carried out a series of simulations on the slope instability and damage by these methods and software achieving significant results. Maihemuti et al used the three-dimensional rapid Lagrangian analysis program (FLAC3D, 4.0) of geotechnical engineering to numerically simulate the deformation and failure process of the bank slope rock and obtained the deformation mechanism of the E20 bank slope [27]. Li et al combined C++ programming technology and finite difference method and realized the three-dimensional numerical simulation of slope through the intelligent inversion analysis of the structural parameters of the soil slope [28].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of NPR Anchorage Monitoring of Bedding Rock Landslide in Open‐Pit Mine

Zhang

Yang

Cui

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

Nanfen open-pit iron mine is the largest single open-pit mine in Asia. Because of the lag of the extension project, the section has slowly spread in the shape of "V," and disasters such as landslides occur frequently. In this study, first, the NPR anchor cable monitoring, which shows supernormal mechanical characteristics and can realize the monitoring and early warning target for the whole landslide process and early warning curve of bedding rock "2016-1101 landslide" in the lower wall of Nanfen open-pit mine, was analyzed, revealing the failure process of the bedding rock landslide and the force evolution characteristics of the NPR anchor cable. en, based on the Fish language in FLAC3D and 3DEC software, the mechanical model of the NPR anchor cable was constructed, and numerical simulation was performed on the whole process of "16-1101 landslide" induced by accumulation of old landslide body. e results of this study indicate that the stress monitoring curves and failure characteristics of the NPR anchor cables in the whole process of landslide by the two numerical simulation methods are basically consistent with the field measurement results, providing a theoretical and practical basis for the mechanistic analysis and numerical simulation of other similar slopes.

show abstract

Numerical Simulation Analysis of Reservoir Bank Fractured Rock-Slope Deformation and Failure Processes

Cited by 36 publications

References 17 publications

Influence of Wind-Generated Wave Action on Mountain Reservoir Bank Collapse: A Case Study at the Lancang River, Western China

Influence of Wind-Generated Wave Action on Mountain Reservoir Bank Collapse: A Case Study at the Lancang River, Western China

Failure Mechanism of Colluvial Landslide Influenced by the Water Level Change in the Three Gorges Reservoir Area

Numerical Simulation Analysis of NPR Anchorage Monitoring of Bedding Rock Landslide in Open‐Pit Mine

Contact Info

Product

Resources

About