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Water
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Stability of Reservoir Bank Slope and Landslides under Hydrodynamic Action
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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 2807

Special Issue Editors

Prof. Dr. Faming Zhang

E-Mail Website
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
Dr. Xuan Zhang

E-Mail Website
Guest Editor Assistant
College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing, China
Interests: costal engineering; hydrodynamics; wave and current interaction; sediment transport
Dr. Menglong Dong

E-Mail Website
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

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

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

Published Papers (3 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 696
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
(This article belongs to the Special Issue Stability of Reservoir Bank Slope and Landslides under Hydrodynamic Action)
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24 pages, 17355 KiB  
Article
A Case Study for Stability Analysis of a Toppling Bank Slope with Fault Fracture Zones Developed under the Action of Bridge Loads and Reservoir Water
by Xiaokai Li, Xiaolong Zhang, Faming Zhang, Jian Huang, Shixiong Tang and Zhiqing Liu
Water 2024, 16(3), 494; https://doi.org/10.3390/w16030494 - 2 Feb 2024
Viewed by 801
Abstract
The mountainous areas of Southwest China have the characteristics of valley deep-cutting, a large topographic gradient, complex geological structures, etc. With the development of infrastructure construction in the area, the construction of bridges across valleys has gradually increased, and the phenomenon of slope [...] Read more.
The mountainous areas of Southwest China have the characteristics of valley deep-cutting, a large topographic gradient, complex geological structures, etc. With the development of infrastructure construction in the area, the construction of bridges across valleys has gradually increased, and the phenomenon of slope failure occurs more and more frequently. As the weak interlayer, the fault fracture zones have a significant influence on the geological structure and stability of slopes, while the complexity of the mechanism of the deformation and failure of slopes increases with the combination of the development of the fracture zones and toppling deformation. This paper took the toppling bank slope of bridge foundations developed with fault fracture zones in Lancang River as the research object. Through an on-site field survey and geological survey technologies, it identified the distribution range of the fracture zones on the bank slope and determined the characteristics of the rock mass in the fracture zones. A stability evaluation model for the bank slope of the bridge foundations was established using the limit equilibrium method and discrete element method. Based on the two-dimensional limit equilibrium analysis, the potential failure modes of the bank slope were explored, and the stability of the bank slope under bridge loads was calculated. Through the three-dimensional geological model of the bank slope, including the fracture zones and toppling bodies, the three-dimensional discrete element numerical simulation method was adopted to simulate and calculate the deformation and failure process of the bank slope under different bridge loads and working conditions. According to the calculation results, the influence of bridge loads and reservoir water on the stability of the bank slope was analyzed from the perspectives of displacement, plastic zone, stability coefficient, and other factors. The formation process of the plastic zone and the development of the sliding surface were revealed, the incentive mechanism of bridge loads and reservoir water on the deformation and failure of the bank slope was analyzed, and the influence of fault fracture zones on the stability of the bank slope and the development of toppling deformation was determined. The results indicate that the fault fracture zones are important geological structures that affect the deformation and failure of the bank slope as a weak interlayer. Under the influence of bridge loads and reservoir water, the stability of the bank slope is affected by the quality of the rock mass and the development of the fault fracture zones, resulting in the unmet need for safety requirements and maybe leading to instability. Based on the calculation results of the stability evaluation prediction model for the bridge foundation bank slope and the engineering geological conditions, the bridge scheme has been selected. Full article
(This article belongs to the Special Issue Stability of Reservoir Bank Slope and Landslides under Hydrodynamic Action)
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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 915
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
(This article belongs to the Special Issue Stability of Reservoir Bank Slope and Landslides under Hydrodynamic Action)
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