Article
Geochemistry & Geophysics
Xuan Zhang, Chun Zhu, Zinan Li, Wansheng Ling, Faming Zhang
Summary: This research focused on the Langjia landslide in Qinghai Province of China to explore the failure mechanism and mode of deep relaxation rockslide in cold and arid areas of the plateau. The main precondition for the landslide was found to be deep relaxation tension cracks, triggered by strong weathering and disintegration of argillaceous cemented conglomerate on the sliding surface. The influence of rainfall, snow melting, and temperature accelerated the development of cracks and weathering process, leading to the formation of a sliding surface of mud rock with gravel.
Article
Engineering, Geological
Emir Ahmet Oguz, Ivan Depina, Vikas Thakur
Summary: Uncertainties in parameters of landslide susceptibility models can hinder accurate predictions of landslide occurrences. This study introduces a new three-dimensional probabilistic landslide susceptibility model to address this issue, showing better performance in predicting landslides compared to conventional models.
Article
Engineering, Geological
Bastian Van den Bout, Luigi Lombardo, Ma Chiyang, Cees van Westen, Victor Jetten
Summary: The research introduces an iterative method for finding progressive slope failure surfaces while considering lateral forces due to weight of the fractured failure material. The method performed well in predicting smaller failures, but ellipsoid sampling methods proved to be more robust for larger slope failures. Comparison with other free and open-source methods showed complex variation in failure surface patterns for the 2009 Messina event, highlighting the potential of the method to provide catchment-scale deterministic failure volume and geometry for future disasters.
ENGINEERING GEOLOGY
(2021)
Article
Construction & Building Technology
Yuke Wang, Musen Han, Bin Li, Yukuai Wan
Summary: This paper proposes a new type of permeable polymer material for grouting anti-seepage reinforcement of dam slopes. The analysis shows that this method can greatly improve the stability of the slope, with good reinforcement effects for medium and low slopes.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
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
Environmental Sciences
Fei Zhang, Tianhong Yang
Summary: The mining of open-pit mines has a significant impact on the surrounding environment and safety. This study examines the different deformation mechanisms and sensitivity of parameters of a large bedding slope in the Fushun West open-pit mine. The findings provide insights into the fundamental reasons for deformation features and suggest measures to improve slope stability and prevent failure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Geological
Kewei Feng, Gang Wang, Duruo Huang, Feng Jin
Summary: The Material Point Method (MPM) was improved in this study to simulate coseismic slope stability and liquefaction-induced embankment failure under earthquake loading. The results demonstrate the advantage of MPM in handling liquefaction-induced large deformations, with the potential to quantitatively assess risks and consequences associated with seismic slope failure and soil liquefaction.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Katherin Rocio Cano Bezerra da Costa, Ana Paola do Nascimento Dantas, Andre Luis Brasil Cavalcante, Andre Pacheco de Assis
Summary: This study presents a probabilistic approach for analyzing the contribution of physical and hydraulic parameters to slope stability under unsaturated and transient conditions. The proposed model incorporates multiple stochastic variables to estimate the probability of failure and demonstrate the variations in failure probability during a rain event. The results highlight the need to transition from deterministic analyses to more robust probabilistic analyses, considering the most significant number of stochastic variables.
Letter
Geosciences, Multidisciplinary
Yukuai Wan, Xinyue Gao, Di Wu, Lei Zhu
Summary: This paper investigates the reliability analysis of slopes under a nonlinear failure criterion by generating two-dimensional random fields using Karhunen-Loeve (KL) expansion method. The simplified Bishop's method with a nonlinear failure criterion is used to calculate factor of safety based on the generated random fields. Monte Carlo simulation is then utilized to estimate the slope's reliability. Example analyses are conducted to validate the proposed method. The effect of the nonlinearity coefficient m on the failure probability of slopes is also examined, showing that the failure probability obtained using the nonlinear failure criterion is higher than that calculated using the linear Mohr-Coulomb criterion.
Article
Engineering, Geological
Wenmin Yao, Changdong Li, Changbin Yan, Hongbin Zhan
Summary: The study proposes a hybrid framework for slope reliability based on Bayesian sequential updating technology, integrating prior knowledge, multiple estimation methods, and model uncertainties to estimate slope reliability with limited geotechnical data. Through experiments with three slope examples, the framework is shown to provide reliable and accurate estimations of slope reliability.
Article
Engineering, Environmental
Amin Falamaki, Ali Shafiee, Amir Hossein Shafiee
Summary: This study evaluates the probabilistic stability of a failed dump site in Iran, finding that both pre-construction and post-construction slopes are stable under static and seismic loads. Excessive water infiltration is identified as the main cause of instability.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Wengang Zhang, Xuanyu Meng, Luqi Wang, Fansheng Meng, Yankun Wang, Pengfei Liu
Summary: This paper comprehensively considers multiple disaster-causing factors and geological variations, studies the long-term evolution trend of bank slopes with weak interlayers in reservoirs, calculates the reliability using the limit equilibrium method combined with the random field, and discusses the long-term effects of dry-wet cycles on reservoir bank landslides and the sensitivity analysis of the statistical parameters of the random field. The results show that the earthquake activity has the greatest impact on the failure probability of landslides, followed by the vertical fluctuation range of parameters and the coefficient of variation of the internal friction angle. The increase in failure probability under the action of dry-wet cycles is mainly caused by the reduction of parameters in the weak interlayer. The reliability evaluation method of reservoir bank slopes can be applied to predict the long-term stability of coastal banks.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Engineering, Geological
Pourya Kargar, Abdolreza Osouli, Timothy D. Stark
Summary: This paper explores the 3D failure mechanism and sequence of the 2014 Oso Landslide in Washington, revealing the occurrence of two separate retrogressive slides. The analysis, based on field reconnaissance and 3D limit equilibrium slope stability analyses, sheds light on the complexities of the slope topography and features that contributed to the initiation and direction of the landslide movement.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Meng Lu, Jianguo Zheng, Jie Zhang, Hongwei Huang
Summary: This study aims to assess the probability of slope failure induced by rainfall during a given exposure time. It is found that slope failure events in different years are not entirely statistically independent, contrary to the Poisson assumption. The method based on the Poisson assumption tends to overestimate the failure probability of the slope during an exposure time, but it is still quite accurate when the annual failure probability is small and the exposure time is short. Method 1 is theoretically most stringent but computationally most expensive, Method 2 is computationally most efficient when the failure probability is large, and Method 3 is computationally most efficient when the failure probability is small.
Article
Engineering, Geological
Dawit Asmare, Chalachew Tesfa
Summary: This research aimed to apply and validate a rating system to produce a landslide hazard zonation map of the study area. The findings showed that the area is highly susceptible to landslides and needs special attention during rainy seasons. The study area was divided into low, moderate, and high hazard zones based on the analysis.
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
(2022)
