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Recent Research on Reservoir Landslide Stability

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

Deadline for manuscript submissions: closed (15 June 2024) | Viewed by 5418

Special Issue Editors


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Guest Editor
School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, China
Interests: reservoir landslide; fiber optic sensing; multi-fields monitoring; stability analysis; early warning

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Guest Editor
School of Civil Engineering, Wuhan University, Wuhan, China
Interests: soil failures; discrete element method; multi-phases coupling; reliability evaluation; risk assessment
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Guest Editor Assistant
School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
Interests: reservoir landslide; optical fiber sensors; structural health monitoring; machine learning

Special Issue Information

Dear Colleagues,

In comparison with other forms of landslides, reservoir landslides exhibit more severe consequences. This is primarily attributable to the fact that reservoir landslides not only pose a direct threat to infrastructure but are frequently accompanied by secondary disasters such as debris flows, impulse water waves, and floods. Consequently, comprehending the evolution mechanisms of reservoir landslides and conducting stability analyses assumes crucial significance.

This Special Issue will be focusing on the theme of “Recent Research on Reservoir Landslide Stability”, with the aim of providing a platform for exchanging views and experiences. The topic contains the formation and evolution mechanism of reservoir landslides; monitoring and early warning methods; and stability analysis, reliability evaluation, and risk assessment. All fundamental and applied studies associated with the above topics are welcome to submit.

This Special Issue aims to coordinate the efforts of scientists in promoting reservoir landslide reduction for the benefit of human society and the natural environment.

Dr. Lei Zhang
Dr. Jiayan Nie
Guest Editors

Dr. Heming Han
Guest Editor Assistant

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Keywords

  • reservoir landslide
  • monitoring
  • evolution mechanism
  • early warning
  • stability analysis
  • risk assessment

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Published Papers (4 papers)

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Research

23 pages, 13925 KiB  
Article
Research Trends and ‘Space-Sky-Ground-Underground’ Monitoring Technology Analysis of Landslide Hazard
by Gang Cheng, Haoyu Zhang, Ye Wang, Bin Shi, Lei Zhang, Jinghong Wu, Qinliang You, Youcai Li and Peiwei Shi
Water 2024, 16(14), 2005; https://doi.org/10.3390/w16142005 - 15 Jul 2024
Cited by 1 | Viewed by 919
Abstract
Landslide is a typical geological disaster distributed in most countries worldwide. Due to long-term natural weathering and human engineering disturbances, the instability of landslides is prone to occur. Once monitoring and disposal methods are implemented inappropriately, they can lead to landslide hazards, seriously [...] Read more.
Landslide is a typical geological disaster distributed in most countries worldwide. Due to long-term natural weathering and human engineering disturbances, the instability of landslides is prone to occur. Once monitoring and disposal methods are implemented inappropriately, they can lead to landslide hazards, seriously threatening the safety of people’s lives and property. For a long time, extensive research on landslide monitoring has been conducted from various countries, providing crucial technical support for reducing the incidence and severity of landslide hazards. However, considering the complex geological conditions of actual landslides and the direct impact of internal and external factors such as rainfall, storms, and earthquakes, the early warning accuracy of landslide hazards is still relatively low. Therefore, based on advanced research achievements, it is significant to carry out research on the current status and development trends of landslide monitoring technology. Based on the Web of Science core database, this study quantitatively analyzes the advanced research achievements in global landslide monitoring in the past decade using bibliometric analysis. A systematic analysis of landslide monitoring technology development is conducted according to each study’s publication time, keywords, and countries. On this basis, a multi-dimensional monitoring system for landslides was proposed, which utilizes the complementary advantages of multi-dimensional monitoring technology to achieve all-round, high-precision, and real-time monitoring of landslides. Finally, taking the Xinpu landslide in the Three Gorges Region of China as an example, a multi-source and multi-field-monitoring experiment was conducted. The application of landslide multi-field-monitoring technology provides an essential reference for monitoring, early warning, as well as the scientific prevention and control of landslide hazard. Full article
(This article belongs to the Special Issue Recent Research on Reservoir Landslide Stability)
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14 pages, 9032 KiB  
Article
Combining InSAR Technology to Uncover the Deformation Factors and Mechanisms of Landslides in the Baihetan Hydropower Station Reservoir Area
by Shuang Zhang, Jie Meng and Guobin Fu
Water 2024, 16(11), 1511; https://doi.org/10.3390/w16111511 - 24 May 2024
Viewed by 930
Abstract
With the operation of the world’s second-largest hydropower facility, Baihetan Hydropower Station, the risk of landslide deformation has increased. To address these potential threats, we employed Interferometric Synthetic Aperture Radar (InSAR) technology for a large-scale landslide investigation and comprehensively revealed the deformation mechanisms [...] Read more.
With the operation of the world’s second-largest hydropower facility, Baihetan Hydropower Station, the risk of landslide deformation has increased. To address these potential threats, we employed Interferometric Synthetic Aperture Radar (InSAR) technology for a large-scale landslide investigation and comprehensively revealed the deformation mechanisms of landslides near the dam site. Our research indicates that the alternating geological features of soft and hard rock layers are the primary causes of landslides, especially the fracturing phenomena of vast amounts of mudstone upon contact with moisture. This leads to the reservoir’s left bank’s dip-slope being susceptible to slip and tensional failure, while the reservoir’s right bank’s reverse slope is more prone to plastic flow and tensional damage. Rapid water level changes and altered rainfall patterns are key factors that trigger landslide instability. Furthermore, we also explored the relationship between fault zones, seismic activity, and landslides, particularly noting the fully coupled state of the southern end of the Daliangshan fault zone, which might further exacerbate landslide deformation. Full article
(This article belongs to the Special Issue Recent Research on Reservoir Landslide Stability)
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21 pages, 12329 KiB  
Article
Research on Performance Test of the Optic-Electric Sensors for Reservoir Landslide Temperature Field Monitoring
by Gang Cheng, Zhenxue Wang, Ye Wang, Bin Shi, Tianbin Li, Jinghong Wu, Haoyu Zhang and Qinliang You
Water 2023, 15(17), 3125; https://doi.org/10.3390/w15173125 - 31 Aug 2023
Viewed by 1414
Abstract
In recent years, with the superposition of extreme climate, earthquakes, engineering disturbance and other effects, global landslide disasters occur frequently. Due to reservoir landslides being mostly in a multi-field coupling environment, the temperature field will impact the deformation and seepage fields, thereby affecting [...] Read more.
In recent years, with the superposition of extreme climate, earthquakes, engineering disturbance and other effects, global landslide disasters occur frequently. Due to reservoir landslides being mostly in a multi-field coupling environment, the temperature field will impact the deformation and seepage fields, thereby affecting the stability of the reservoir landslide. The variation in the landslide’s surface temperature also directly affects the stress and deformation of deep rock masses. If hidden dangers are not detected in time, and corresponding measures are implemented, it is easy to cause landslide instability. In order to clarify the temperature measurement performance of different optic-electric sensors and the application characteristics of layout techniques, laboratory calibration tests of temperature sensors under different adhesives and attachment materials are carried out in this paper. It was found that the test data of the iron bar had the best effect among the four attachment materials overall. Therefore, the bar with a high-stiffness material should be preferred when selecting a pipe fitting as the fiber Bragg grating (FBG) temperature attachment in the borehole. However, considering the high requirements for the durability of sensors and layout techniques in on-site monitoring, the long-term stability of the adhesives used in actual monitoring needs to be improved. At the same time, it was found that the platinum 100 (PT100) temperature sensor has relatively higher testing accuracy (A: 0.15 + 0.002 × |t|; B: 0.30 + 0.005 × |t|), a larger temperature measurement range (−200~+850 °C) and better temperature measurement stability when compared to conventional sensors. Moreover, its resistance value has a good linear relationship with temperature. Finally, the Xinpu landslide in the Three Gorges Reservoir area was selected as the research object for on-site monitoring. There was a high correlation between the on-site monitoring results with the laboratory calibration test results. Therefore, through the performance test of optic-electric sensors in reservoir landslide temperature fields, more accurate solutions can be provided for selecting sensors and designing layout techniques to monitor the underground temperature field of landslides under different geological conditions. Thereby, grasping the real-time state information of the reservoir landslide temperature field is achieved accurately, providing an important reference for early warning, prediction, prevention and the control of reservoir landslide disasters. Full article
(This article belongs to the Special Issue Recent Research on Reservoir Landslide Stability)
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19 pages, 6689 KiB  
Article
Damage Evolution and Failure Mechanism of Red-Bed Rock under Drying–Wetting Cycles
by Tao Wen, Yankun Wang, Huiming Tang, Junrong Zhang and Mingyi Hu
Water 2023, 15(15), 2684; https://doi.org/10.3390/w15152684 - 25 Jul 2023
Cited by 7 | Viewed by 1390
Abstract
The rock mass on the bank slope of the Three Gorges Reservoir (TGR) area often suffers from a drying–wetting cycle (DWC). How the DWCs significantly affect the mechanical properties and the stability of the rock mass is worth comprehensively investigating. In this study, [...] Read more.
The rock mass on the bank slope of the Three Gorges Reservoir (TGR) area often suffers from a drying–wetting cycle (DWC). How the DWCs significantly affect the mechanical properties and the stability of the rock mass is worth comprehensively investigating. In this study, the influence of the DWC on the mechanical properties of red-bed rock, mainly purplish red argillaceous siltstone, is explored in detail. Triaxial compression tests were conducted on siltstones that were initially subjected to different DWCs. The results show that DWCs lead to a decrease in mechanical properties such as peak stress, residual stress, and elastic modulus, while an increase in confining pressure (CP) levels leads to an increase in these mechanical properties. Significant correlations are found between the energy parameters and the DWC or the CP. Notably, the total absorption energy (TAE) demonstrates a positive correlation with the CP, but the capability of siltstones to absorb energy shows a negative correlation with DWC. Moreover, the study also examines the damage evolution laws of rocks under different DWCs by proposing a damage variable (DV). Results demonstrate that the effect of the CP on the DV is more pronounced than that of DWCs. A novel brittleness index (BI) was also proposed for estimating rock brittleness through damage strain rate analysis. The effectiveness of the proposed BI is validated by evaluating the effects of DWCs and CP on rock brittleness. Finally, the failure mechanism of the rocks under water–rock interaction is revealed. The weakening of mechanical properties occurs due to the formation of microcracks in response to DWCs. These findings provide valuable guidance for the long-term stability assessment of bank slope engineering projects under DWCs. Full article
(This article belongs to the Special Issue Recent Research on Reservoir Landslide Stability)
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