Article
Chemistry, Analytical
Cheng Zhong, Chang Li, Peng Gao, Hui Li
Summary: Post-seismic vegetation recovery is crucial for local ecosystem and slope stability, and this study found that about 60% of landslide vegetation in the Wenchuan earthquake area reaches pre-earthquake levels within ten years and is expected to fully recover within 20 years. Vegetation recovery is significantly influenced by topographic factors, especially elevation and slope, while being minimally related to distance to epicenter, fault ruptures, and rivers.
Article
Geochemistry & Geophysics
Yu-Chun Chang, Neil C. Mitchell, Rui Quartau
Summary: Small landslides in the upper submarine slopes of volcanic islands present local hazards due to their high frequency. A study using high-resolution bathymetric data and classification schemes found differences in landslide characteristics among different volcanic islands, which are closely related to seismic activities.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geology
Katleen Wils, Mudrik R. Daryono, Nore Praet, Arianto Budi Santoso, Aan Dianto, Sabine Schmidt, Morgan Vervoort, Jyh-Jaan Steven Huang, Edi Kusmanto, Purnama Suandhi, Danny H. Natawidjaja, Marc De Batist
Summary: The study found that the two lakes in West Sumatra, Lake Singkarak and Lake Maninjau, are able to record various natural hazards such as floods, debris avalanches, earthquakes, and volcanic activity that impact the region. These lakes, in their unique tectonic setting, show specific sedimentary responses to past natural disaster events.
SEDIMENTARY GEOLOGY
(2021)
Article
Engineering, Geological
Yigen Qin, Dongli Zhang, Wenjun Zheng, Jingjun Yang, Gan Chen, Lei Duan, Shumin Liang, Hui Peng
Summary: Earthquake-triggered landslides are influenced by both seismogenic faults and topography. The dip angle of the fault has a controlling impact on the spatial distribution of the landslides. Higher dip angles result in a concentrated distribution of landslides on both sides of the fault, while lower dip angles lead to a more pronounced hanging wall effect. The topography, particularly the relative elevation differences, is closely related to the landslides, forming a single peak within a local relief range of 400-1600 m.
Article
Engineering, Geological
Xianzheng Zhang, Chenxiao Tang, Ning Li, Jiang Xiong, Ming Chen, Mingwei Li, Chuan Tang
Summary: It is recognized that post-seismic mass movements usually occur in the first few years after an earthquake. However, a major debris flow occurred in Wenchuan County in 2019, 11 years after the 2008 Wenchuan earthquake, indicating a different temporal evolution pattern. The investigation results show that active landslides mainly occurred in high-elevation areas without vegetation cover, and the debris flows were mainly initiated by run-off erosion of debris in steep channels. Additionally, more debris flows occurred in the northern part of the study area, where the relative annual rainfall and coseismic landslide density were low.
Article
Geography, Physical
Corinne Singeisen, Chris Massey, Andrea Wolter, Richard Kellett, Colin Bloom, Tim Stahl, Caleb Gasston, Katie Jones
Summary: This study analyzes three landslides triggered by the 2016 earthquake in New Zealand's South Island using 3D pixel tracking and geomorphic mapping. The results show that failure mechanisms and displacement patterns vary in different geological settings.
Article
Geosciences, Multidisciplinary
Lanxin Dai, Gianvito Scaringi, Xuanmei Fan, Ali P. Yunus, Jing Liu-Zeng, Qiang Xu, Runqiu Huang
Summary: Major earthquakes in steep orogens can lead to extensive landsliding, with most landslide bodies remaining high on slopes and prone to remobilization by subsequent rainfalls. While debris flows and fluvial transport can evacuate a small portion of coseismic debris, over 70% of it tends to stabilize on hillslopes, creating long-term geological hazards in the orogen. Uncertainties in the fate of debris throughout the earthquake cycle hinder accurate estimates based on initial landslide abundance and sediment export.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Semet Celik, Mehmet Ozyazicioglu, Remzi Sahin, Habib Uysal, F. Zehra Cakici, Ekrem Kalkan
Summary: This study examines the technical summary and forensic analysis of a landslide that led to the collapse of the ski-jumping complex in Erzurum in 2014. Various perspectives including geological, geophysical and geotechnical are considered to illuminate the true causes of this engineering failure. The study aims to provide engineers and public administrators with an example of the importance of considering critical ground conditions and well-established design principles in civil engineering projects.
Article
Engineering, Geological
Jiang Xiong, Chuan Tang, Hai Tang, Ming Chen, Xianzheng Zhang, Qinyun Shi, Ming Chang, Lingfeng Gong, Ning Li, Mingwei Li
Summary: This study investigates the long-term changes in hillslope erosion and landslide-channel coupling by quantifying the coupling degree using a landslide-channel coupling index (LCCI) and estimating the hillslope erosion driven by landslides. The results show that the overall landslide activity and coupling degree decayed following the Wenchuan earthquake, and the hillslope erosion driven by landslides also followed a power law decay. Although the coupling degree and sediment supply to channels have decreased, strong rainfall events can still result in significant sediment delivery.
ENGINEERING GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jiang Xiong, Chuan Tang, Lingfeng Gong, Ming Chen, Ning Li, Qingyun Shi, Xianzheng Zhang, Ming Chang, Mingwei Li
Summary: The study revealed that after the Wenchuan earthquake, landslide sediment in the alpine basin was mainly transferred to the channels through specific processes, with surface runoff erosion becoming the primary transfer process later on. Analysis of a remote sensing image time series confirmed that the sediment transfer process in the alpine basin was intense during the first 5 years post-earthquake, gradually weakening thereafter and potentially requiring 20 years or longer to return to pre-earthquake levels.
Article
Geosciences, Multidisciplinary
Lan Ning, Kaiheng Hu, Zhang Wang, Hong Luo, Haokun Qin, Xiaopeng Zhang, Shuang Liu
Summary: Delivery of large volumes of sediment by debris flows can cause a hazardous chain reaction in rivers. Artificial intervention measures, such as dredging, rechanneling, and embankment construction, have shown to be effective in halting this cascading process of natural hazards.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Geological
Shenghua Cui, Xiangjun Pei, Yao Jiang, Gonghui Wang, Xuanmei Fan, Qingwen Yang, Runqiu Huang
Summary: The Daguangbao landslide, triggered by the 2008 Wenchuan earthquake, was a catastrophic mass movement with a volume of approximately 1.2 x 10(9) m(3). Laboratory tests revealed that the carbonate fault breccia on the sliding layer had a high liquefaction potential and low friction coefficient, which contributed to the initiation and movement of the landslide. Numerical calculations showed that the landslide occurred 36 seconds after the earthquake and collided with a riverbank in the 76th second, indicating that pore-water pressure during seismic shaking intensified the instability and mobility of the slope.
ENGINEERING GEOLOGY
(2021)
Article
Ecology
Ming Chen, Chuan Tang, Xiaodi Wang, Jiang Xiong, Qingyun Shi, Xianzheng Zhang, Mingwei Li, Yuting Luo, Yu Tie, Qiang Feng
Summary: This study investigated the temporal and spatial differentiation of surface recovery at post-seismic landslides in three typical regions along the fault generated by the Wenchuan earthquake. The results showed that geological factors and climate significantly influenced the surface recovery rates at post-seismic landslides, with NDVI values in different areas returning to pre-earthquake levels within 11 to 16 years after the earthquake.
ECOLOGICAL INFORMATICS
(2021)
Article
Geosciences, Multidisciplinary
Xudong Hu, Feng Yang, Kaiheng Hu, Miao Ding, Shuang Liu, Li Wei
Summary: In a seismic basin, the connectivity between earthquake-induced landslides and debris-flow channels plays a crucial role in determining the sediment volume transported into debris flows and the magnitude of the debris flows. This study developed a normalized index of sediment connectivity to analyze the evolution of landslide sediment transport capacity. By simulating two debris-flow events, the results showed a good agreement between the simulated and observed debris-flow magnitudes, indicating the suitability of the normalized landslide connectivity index for estimating the movable volume. Additionally, a negative correlation was found between the sediment connectivity index and landslide characteristics, suggesting a decay of spatial connectivity over time and a corresponding reduction in debris-flow magnitude.
Article
Geosciences, Multidisciplinary
Zibo Wang, Ruifeng Liu, Wei Liu
Summary: After the 2008 Wenchuan earthquake, the Longmen-Shan fault zone has experienced frequent seismic activity. This study used seismic data to estimate the source parameters of moderate magnitude events in the Longmen-Shan Fault zone. The results suggest that the earthquakes in this region have high energy release and potential for strong ground shaking.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Engineering, Geological
Shi-Jin Feng, Jia-Liang Shi, Yang Shen, Hong-Xin Chen, Ji-Yun Chang, Hong-Tao Wang
Summary: This paper presents an experimental study on the interface shear behavior between smooth and textured geomembranes and compacted clay liners. The shear strength was found to be mainly driven by the normal stress level and had minimal influence from the displacement rate. The residual shear strength of the textured geomembrane/compacted clay liner interface was even higher than the peak shear strength of the smooth geomembrane/compacted clay liner interface at all normal stress levels.
ENVIRONMENTAL GEOTECHNICS
(2023)
Article
Engineering, Geological
Chen Chen, Limin Zhang
Summary: Numerous incidents and failures of earth slopes, dykes, levees and embankment dams are caused by internal erosion, especially under extreme rainfall, storm surges, waves, and flash floods induced by global climate change. This study conducted laboratory tests to investigate the development of internal erosion and changes in hydraulic conductivity under one-way cyclic seepage, as well as the post-erosion stress-strain behavior. The results showed that the erosion development is significantly influenced by the initial grain size distribution and the pattern of imposed cyclic hydraulic gradient, and the cyclic seepage promotes the loss of fine particles and leads to larger hydraulic conductivity.
Article
Engineering, Multidisciplinary
W. J. Lu, B. Li, J. F. Hou, X. W. Xu, H. F. Zou, L. M. Zhang
Summary: This study investigates the vibratory penetration of large-diameter steel cylinders in the Hong Kong-Zhuhai-Macao Bridge (HZMB). Based on geological surveys, field monitoring, and drivability analysis, the vibratory penetration rate, installation accuracy, and dynamic responses of the steel cylinders at both the eastern and western artificial islands are analyzed. A modified method is proposed to calculate the vibratory soil resistance for open-ended thin-wall cylinders under unplugged conditions to consider the scale effects and provide more accurate results for engineering practice.
Article
Engineering, Geological
M. Kamali Zarch, L. M. Zhang, S. M. Haeri, Z. D. Xu
Summary: The rheological behavior of dilute soil-water mixtures, containing clay, silt, and sandy particles, is still not well understood. To investigate this, experiments were conducted using a narrow-gap rotational viscometer to evaluate the interactions between colloidal and non-colloidal particles and the possibility of flow regime change. Results showed that the Bingham model could describe the bulk rheological behavior of dilute mixtures and that the viscosity and yield stress played important roles. It was also found that the flow regime change in dilute mixtures was mainly influenced by flow boundary conditions.
CANADIAN GEOTECHNICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Haojie Wang, Lin Wang, Limin Zhang
Summary: This study proposes a transfer learning-based approach for landslide susceptibility assessment, which improves prediction accuracy in data-limited regions by training models in data-rich regions and transferring knowledge through model transfer and fine-tuning.
Article
Geosciences, Multidisciplinary
Haojie Wang, Limin Zhang, Lin Wang, Ruilin Fan, Shengyang Zhou, Yejia Qiang, Ming Peng
Summary: This paper presents an integrated machine learning method for co-seismic landslide detection, combining multi-source data, pixel-based and object-based treatments, and ML techniques. Two case studies in China demonstrate the outstanding performance and generic nature of the proposed method in high-resolution co-seismic landslide detection.
Review
Engineering, Environmental
Jia Liu, Wen-yan Li, Hong-xin Chen, Shuang-qiang Li, Li-heng Yang, Kai-ming Peng, Chen Cai, Xiang-feng Huang
Summary: This review discusses the stabilization mechanisms of nanoparticle-stabilized surfactant foam (NP-SF) and the effects of nanoparticle properties on foam stability. Different types of nanoparticles, such as SiO2 and nano zero-valent iron, have been used to stabilize foam for remediation of petroleum-contaminated soils. Additionally, the efficiency and recyclability of Al2O3/Fe3O4 nanoparticles in diesel and crude oil remediation can be enhanced by applying a magnetic field. This review provides a theoretical basis and practical guidelines for developing functional NP-SF for remediation of petroleum-contaminated soils.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Computer Science, Interdisciplinary Applications
Ming-Qing Peng, Shi-Jin Feng, Hong-Xin Chen, Zhang-Long Chen
Summary: This paper presents a new analytical model for forecasting the one-dimensional transient transport of organic pollutants in a typical landfill composite liner. The model considers the coupling effect of molecular diffusion, thermodiffusion, advection, and linear adsorption processes. The results show that thermodiffusion significantly influences pollutant migration in the composite liner.
COMPUTERS AND GEOTECHNICS
(2023)
Review
Engineering, Geological
Marcin Chwala, Kok-Kwang Phoon, Marco Uzielli, Jie Zhang, Limin Zhang, Jianye Ching
Summary: This paper reviews the historical developments of geotechnical risk and reliability over the past six decades, highlighting the natural origin of the ground and the lack of sufficient data as key features in geotechnical engineering. It proposes methods like random field theory and compilation of databases to address these issues. The paper emphasizes the importance of reliability-based design as probabilistic methods offer a pathway to tackle big data and implement data-centric geotechnics.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2023)
Article
Computer Science, Interdisciplinary Applications
K. S. Yin, T. Xiao, H. Y. Luo, H. F. Zou, L. M. Zhang
Summary: Deep cement mixing (DCM) is an effective ground improvement technique that involves injecting dry cement or cement slurry into the ground. This study focuses on the spatial variation of unconfined compressive strength (UCS) in DCM clusters in a marine clay area. Variograms and random field modeling were used to analyze the spatial variability and autocorrelation structure of UCS data. The study compares the spatial magnitude, uniformity, and variability of site-wide UCS before and after the construction of DCM clusters.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Shao-Jie Wu, Shi-Jin Feng, Qi-Teng Zheng, Xiao-Lei Zhang, Hong-Xin Chen
Summary: Aeration is an effective technology for shortening the landfill stabilization phase. A comprehensive 3D multi-field model is developed to understand the waste stabilization process under aeration. The model considers nitrification and denitrification processes, leachate solute transport, and time-dependent deformations. The results show that most organic carbon is discharged via gas, while nitrogen is mainly dissolved in leachate as nitrate. The stabilization process can be divided into three stages based on selected indicators, providing a practical way to evaluate landfill stabilization state.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Construction & Building Technology
Hong-Xin Chen, Qin-Pei Xue, Zhi-Peng Ma, Liang Gao, Shi-Jin Feng
Summary: In this study, a geopolymer cutoff wall backfill (GCWB) without Ordinary Portland Cement (OPC) and bentonite was developed, and its macroscopic properties and barrier performance were evaluated. The optimal material ratio with the highest unconfined compressive strength was determined to be 30FA1.2M12S, and the one with the lowest hydraulic conductivity was 40FA1.2M12S. After cured for 28 days, GCWB achieved unconfined compressive strength of 6.62 MPa and hydraulic conductivity of 4.83 x 10-11 m/s. The chemical compatibility of GCWB was favorable in Na2SO4 and CaCl2 solutions. Under dry-wet cycles, the hydraulic conductivity of GCWB increased sharply after the 1st cycle and tended to be stable in subsequent cycles. Therefore, GCWB showed desirable barrier performance and durability, indicating its potential as an antifouling cutoff wall material.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Geosciences, Multidisciplinary
H. Y. Luo, L. M. Zhang, L. L. Zhang, J. He, K. S. Yin
Summary: Landslides are destructive hazard processes causing significant loss of life and damage to buildings. This review summarizes the progress in assessing building vulnerability to landslides over the past two decades and presents future needs. The review analyzes a literature dataset on vulnerability to landslides, presents building failure mechanisms and damage classification systems, and compares different types of building vulnerability models.
EARTH-SCIENCE REVIEWS
(2023)
Editorial Material
Engineering, Geological
Peng Cui, Manchao He, Paul Tapponnier, Limin Zhang, Zhenhong Li, Wenping Gong, Gordon G. D. Zhou, Jian Guo
ENGINEERING GEOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Hong-Xin Chen, Shi-Jin Feng, Zhang-Wen Zhu, Liang Gao, Zhang-Long Chen, Shu-Rui Wang
Summary: This study proposes an analytical solution to describe the self-weight consolidation of a two-layer soil under variable load and semi-permeable boundary condition. The solution is validated against field tests, analytical solutions, and numerical simulations. The study investigates the influence of boundary drainage capacity, self-weight, load rate, and soil layering features. It is found that the consolidation ratio difference between complete pervious and semi-permeable boundary conditions decreases with increasing semi-permeability coefficient. The excess pore pressure is affected by the self-weight, with the maximum pressure appearing below the middle depth, especially at the early stages. The dissipation of excess pore pressure is hindered when the soil layer with lower consolidation coefficient is at the bottom. A design curve for the time of consolidation completion is provided, which can serve as a useful reference in engineering practices for two-layer soil consolidation.
COMPUTERS AND GEOTECHNICS
(2023)