Stability of Reservoir Bank Slope and Landslides under Hydrodynamic Action

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 2371

Special Issue Editors


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Guest Editor
School of Earth Sciences and Engineering, Hohai University, Nanjing, China
Interests: high-slope stability; rock engineering; landslide mechanism; geological hazards evaluation; hydropower engineering geology

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Guest Editor Assistant
College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing, China
Interests: costal engineering; hydrodynamics; wave and current interaction; sediment transport

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Guest Editor Assistant
School of Earth Sciences and Engineering, Hohai University, Nanjing, China
Interests: engineering geology; slope stability; underground engineering; geological engineering

Special Issue Information

Dear Colleagues,

The fluctuation of the reservoir water level is one of the main factors inducing the deformation, instability, and landslide of reservoir bank slopes. Especially for large reservoirs, during the storage process and operation stage, the groundwater dynamics in the bank slope change frequently, which may directly or indirectly lead to the instability and damage of the bank slope, affecting the safe operation of the reservoir. Meanwhile, the foundations on both sides of cross river bridges are often located on the bank slopes of reservoirs, and the stability of the bank slopes directly affects the safety of the bridge. Therefore, the stability evaluation and prediction of bank slopes during reservoir water level changes is currently one of the important research fields in engineering geology and hydrogeology. In addition, the stability of the coast bank under hydrodynamic forces and the stability of excavated high slopes under rainfall are all key concerns in the field of modern slope engineering. This topic will focus on (but is not limited to) innovative and valuable research results in the stability analysis methods and mechanism research of water-related slopes under hydrodynamic action, including monitoring technology, experimental analysis, numerical analysis, and typical case analysis. This Special Issue aims to collate works focused on the following areas:

(1) Evaluation of bank slope stability under changes in reservoir water level;
(2) Hydrodynamic mechanism of rainfall induced landslides;
(3) Evaluation and prediction of landslide stability related to water;
(4) Wave propagation law caused by landslides in large reservoirs;
(5) The influence of wave action on reservoir bank reconstruction;
(6) The stability of bank slope under the joint action of bridge load and reservoir hydrodynamics of a cross river bridge;
(7) Stability of excavated slope in mountainous areas under rainfall.

Prof. Dr. Faming Zhang
Guest Editor

Dr. Xuan Zhang
Dr. Menglong Dong
Guest Editor Assistants

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Keywords

  • reservoir bank slope
  • water-induced landslide
  • hydrodynamics
  • costal bank stability
  • stability evaluation
  • geological hazards

Published Papers (2 papers)

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Research

26 pages, 22627 KiB  
Article
Rainfall–Mining Coupling Effects on Slope Failure Mechanism and Evolution Process: A Case Study of Open-Pit to Underground Mining
by Qihang Li, Yunmin Wang, Xiaoshuang Li and Bin Gong
Water 2024, 16(5), 740; https://doi.org/10.3390/w16050740 - 29 Feb 2024
Cited by 1 | Viewed by 870
Abstract
This research examines how rainfall and mining affect the slope damage resulting from the transition from open-pit mining to underground mining. Using an unmanned aerial vehicle (UAV), the Huangniu slope of the Dexing Copper Mine was fully characterized, and experiments were conducted on [...] Read more.
This research examines how rainfall and mining affect the slope damage resulting from the transition from open-pit mining to underground mining. Using an unmanned aerial vehicle (UAV), the Huangniu slope of the Dexing Copper Mine was fully characterized, and experiments were conducted on rock samples from appropriate sites. First, the mechanical properties of the samples were measured. Then, the parameters of the similarity simulation experiments were derived based on the similarity theory. Subsequently, the rainfall, rock slope, data acquisition, and monitoring systems were designed. Finally, the rock mass failure with different slope angles was analyzed, and the deformation and damage patterns under the coupling effect were obtained. The results show that rainfall increases pore water pressure and moisture content. Rainfall and slope-slip water have more of an impact on the open-pit platform. The pore water pressure values on the upper rock mass rise faster than inside it. In the open-pit mining stage, the rock mass shifts slightly to the upper left. In the room mining stage, vertical fractures and goaf sinking occur. The fractures above the mine form a semi-ellipse. In the pillar mining stage, overlying rock displacement is evident and fractures persist. In the continuous pillar mining stage, the overlying rock collapses. The 65° slope model was the most damaged, while the 55° slope model was the least damaged. The results also suggest that the UAV guides sample selection. Full article
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23 pages, 9791 KiB  
Article
Deformation Characteristics and Stability Prediction of Mala Landslide at Miaowei Hydropower Station under Hydrodynamic Action
by Jingqing Lv, Zhigang Shan, Fei Yin, Liang Chen, Menglong Dong and Faming Zhang
Water 2023, 15(22), 3942; https://doi.org/10.3390/w15223942 - 13 Nov 2023
Viewed by 1054
Abstract
In recent years, with the completion of the construction of large-scale hydropower projects in China, a series of engineering geological problems that occurred during the operation of the hydropower station have become an important issue affecting the normal operation of hydropower stations. Landslides [...] Read more.
In recent years, with the completion of the construction of large-scale hydropower projects in China, a series of engineering geological problems that occurred during the operation of the hydropower station have become an important issue affecting the normal operation of hydropower stations. Landslides on reservoir slopes triggered especially by water storage and other factors related to the construction of hydropower stations seriously affect the normal operation of the hydropower station and lead to other geological disasters. Research indicates that many reservoir-area landslides are triggered by hydrodynamic forces resulting from water level fluctuations in hydroelectric power stations. The Mala landslide of Miaowei Hydropower Station in the Lancang River Basin of China is taken as the engineering example to study the influence of hydrodynamic forces on the deformation characteristics and stability trends of the landslide. This paper explores the formation mechanism and influencing factors of the Mala landslide by conducting a field investigation of the Mala landslide and analyzing the monitoring data. Additionally, this paper also discusses the impacts of water storage, rainfall, and engineering construction on landslide induction. It is considered that the evolution of the Mala landslide from the initial stage of water storage to the current state mainly includes four stages: small-scale bank collapse stage, creep deformation stage, accelerated sliding stage, and uniform sliding stage. Moreover, the changes in the trend of landslide stability are analyzed using the two-dimensional finite element method. The research results provide a valuable reference for understanding the formation mechanism and predicting the deformation of reservoir landslides, which has considerable engineering practical significance. Full article
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