Article
Engineering, Geological
Danqing Song, Han Du
Summary: Due to the complexity of geological conditions and external disturbances, the process of open-pit landslide instability is extremely complicated. In this study, an accurate landslide geological section was established by detailed field investigation, remote sensing image interpretation, and field borehole data. A two-dimensional discrete-element model was used to investigate the failure evolution, deformation behavior, and dynamic characteristics of the landslide. The results showed that the evolution of the landslide can be divided into three stages: initial deformation, accelerated deformation, and deceleration and stabilization. The numerical simulation obtained consistent results with field investigation and remote sensing interpretation, providing a reference for the study and prevention of open-pit mine landslides.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
Article
Engineering, Geological
Min Xia, Guang Ming Ren, Feng Tian
Summary: In this study, evidence of an ancient, large-scale river-damming landslide in the southeastern Tibetan Plateau, China, was revealed using various methods. The landslide had a estimated volume of 3.5 x 10(7) m(3) and formed a dam over 170 m in height. Lacustrine sediments were found on both banks upstream of the landslide dam, indicating blockage of the Jinsha River. The landslide was likely triggered by a strong earthquake related to activity on the Xiongsong-Suwalong fault in the Late Holocene.
Article
Engineering, Geological
Wen-Jie Xu, Lin Wang, Kai Cheng
Summary: This study investigates the formation process of landslide dams triggered by earthquakes and proposes a 3D modeling method using the discrete element method. The analysis explores the relationship between the triggering and failure modes of rock slides and the geological structure. Additionally, the simulation provides detailed insights into the formation of barrier lakes.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Environmental Sciences
Li Wei, Hualin Cheng, Zili Dai
Summary: In this study, the geomechanical properties of landslide in Enshi County were obtained through field surveys, and the Shaziba landslide was simulated using particle flow and discrete element models. The simulation results showed that the landslide movement lasted approximately 1000 s, with a maximum average velocity of 7.5 m/s and an average runout distance of about 1000 m. The simulated morphology of the landslide deposits matched well with the field data. Additionally, the influence of effective modulus on the calculation results was analyzed.
Article
Engineering, Geological
Wen-Jie Xu, Qiang Xu, Guang-Yu Liu, Hui-Ya Xu
Summary: The study introduces a method to address challenges in selecting contact parameters for DEM simulation and develops a program named CoSim-DEM for landslide modeling. By simulating two landslides in Tibet, the method's effectiveness is validated for future rapid assessment of landslide hazards.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Kai Gu, Fulin Xiang, Chun Liu, Bin Shi, Xing Zheng
Summary: Distributed fiber optic sensing (DFOS) is a novel technology for continuously monitoring deformation in loose sediment. The accuracy of the results depends on the mechanical coupling between the sediment and fiber-optic cable. However, assessing this coupling behavior is challenging in both laboratory and in-situ tests.
ENGINEERING GEOLOGY
(2023)
Article
Environmental Sciences
Chun Liu, Bin Shi, Kai Gu, Tiansheng Zhang, Chaosheng Tang, Yue Wang, Suping Liu
Summary: Recent findings suggest that land subsidence in the south Yangtze River delta area has not ceased despite the rise in groundwater levels. Laboratory tests and simulations have revealed significant compressive strain in the aquitard above the exploited aquifer, which is influenced by the negative pore water pressure. This highlights the potential compression of aquitards during draining and recharging cycles.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Xin Wang, Shibiao Bai
Summary: This research compares landslide susceptibility maps obtained from unclassified landslides directly and the spatial superposition of different types of landslide susceptibility map. It explores the interpretability using cartographic principles of the two methods of map-making. Various background factors were used to assess rainfall and seismic landslide susceptibility, and the accuracy of the models was verified using confusion matrix and ROC curve. The study found high accuracy for the coupling model and significant differences in results between the two methods of evaluating landslide susceptibility.
Article
Geosciences, Multidisciplinary
Wanyu Jiang, Guan Chen, Xingmin Meng, Jiacheng Jin, Yan Zhao, Linxin Lin, Yajun Li, Yi Zhang
Summary: The damage caused by rainfall-induced landslides has increased globally. Urbanisation has led to the expansion of residential areas in mountainous areas, accelerating slope instability. However, the limited data records in mountainous zones have resulted in low-precision landslide rainfall thresholds. This study uses the Bailong River Basin in western China as a case study to establish a high-precision rainfall threshold curve and a regional landslide early warning model based on Bayes' theorem, the frequency method, and deep learning techniques. The research findings provide effective support for early warning and risk management of geological disasters in mountainous areas with limited data.
Article
Computer Science, Interdisciplinary Applications
Fei Wang, Wei Li, Xinli Hu, Ziwei Cao, Yunfei Gao
Summary: The undrained shear test is crucial in understanding the deformation and failure mechanisms of rock and soil, but it has its limitations. This paper proposes a tailored numerical simulation approach to complement the test, and validates its effectiveness and accuracy through specific cases.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Environmental Sciences
Ruian Wu, Zhihua Yang, Changbao Guo, Yongshuang Zhang, Deguang Song, Haishan Ma, Xiang Li, Jiawei Ni
Summary: This study evaluates and models the reactivation characteristics and potential risks of the ancient Woda landslide in the upper Jinsha River in China. The results show that the landslide is currently experiencing creep, but accelerated deformation is also occurring locally. The simulations predict that the landslide could form a dam and block the river, causing significant backwater areas and peak flood discharges.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Green & Sustainable Science & Technology
Xulei Chen, Fengwei Gu, Zhichao Hu, Feng Wu, Weiwen Luo, Kai Guo
Summary: This study calibrates the soil parameters for wheat grown after rice in the lower reaches of the Yangtze River using the EEPA model and EDEM software. The results show a high similarity between the actual values and simulation values, providing technical support for the simulation and optimization of growing wheat after rice seeding equipment in the region.
Article
Geosciences, Multidisciplinary
Yanqian Pei, Haijun Qiu, Dongdong Yang, Zijing Liu, Shuyue Ma, Jianyong Li, Mingming Cao, Waili Wufuer
Summary: Global warming promotes glacier retreat, snow melting, and permafrost thawing, thereby increasing landslide activity in alpine mountain regions. However, our understanding of the effects of climate change on landslides is restricted by the sparse nature of landslide records. In this study, using a reconstructed landslide inventory and a set of downscaled meteorological data, we assessed the interaction between landslides and climate change over the past 20 years in the Taxkorgan River basin and projected the future impacts of climate change on landslide activity. The results showed an exponential increase in the number of landslides under global warming, with the warm season experiencing the highest occurrence and the high-elevation region being more susceptible to landslides.
Article
Chemistry, Multidisciplinary
Chiara Martinello, Claudio Mercurio, Chiara Cappadonia, Viviana Bellomo, Andrea Conte, Giampiero Mineo, Giulia Di Frisco, Grazia Azzara, Margherita Bufalini, Marco Materazzi, Edoardo Rotigliano
Summary: The quality of landslide inventories used for calibration greatly affects the quality of the model and its prediction image in statistical landslide susceptibility evaluation. This research proposes a two-step susceptibility modeling procedure to verify and solve the limitations caused by the incompleteness and mapping inaccuracy of regional-scale inventories. By applying this procedure to the Torto River basin in Italy, it was found that the limitations of the initial models were largely solved by the recalibrated models, suggesting the proposed procedure as a suitable modeling strategy for regional susceptibility studies.
APPLIED SCIENCES-BASEL
(2023)
Article
Green & Sustainable Science & Technology
Yanlin Li, Aijun Yao, Yifei Gong
Summary: This paper reports a massive ancient anti-dip river-damming landslide on the Jinsha River and reveals its potential mechanism through field investigation, theoretical analysis, and software replication. The findings are significant for understanding landslide formation and prevention.
Article
Construction & Building Technology
Guang-wei Liu, Dan-qing Song, Zhuo Chen, Ju-wen Yang
ADVANCES IN CIVIL ENGINEERING
(2020)
Article
Engineering, Geological
Danqing Song, Zhuo Chen, Yutian Ke, Wen Nie
ENGINEERING GEOLOGY
(2020)
Article
Green & Sustainable Science & Technology
Han Du, Danqing Song, Zhuo Chen, Heping Shu, Zizheng Guo
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Energy & Fuels
Han Du, Danqing Song, Zhuo Chen, Zizheng Guo
ENERGY SCIENCE & ENGINEERING
(2020)
Article
Multidisciplinary Sciences
Zhuo Chen, Danqing Song, Lihu Dong
Summary: This paper describes a recent landslide event in Liucheng village in Tianquan County, Sichuan Province, China, and investigates the deformation characteristics of the landslide. Anti-sliding piles were used to stabilize the landslide and ensure the safety of human life and property. Analysis of monitoring data shows that the anti-sliding piles effectively increase the stability of the landslide, providing valuable reference for similar slope engineering projects.
SCIENTIFIC REPORTS
(2021)
Article
Construction & Building Technology
Chao Hu, Fei Ye, Wenxi Fu, Zhuo Chen
ADVANCES IN CIVIL ENGINEERING
(2020)
Article
Environmental Sciences
Zhuo Chen, Danqing Song, Mukhiddin Juliev, Hamid Reza Pourghasemi
Summary: Three statistical models and two methods were used to analyze ten conditioning factors related to landslides, with the hybrid models showing significantly improved predictive capability compared to single models. The NSCI and WCLPM hybrid techniques are promising methods for landslide susceptibility assessment.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Zhuo Chen, Hongfu Zhou, Fei Ye, Bin Liu, Wenxi Fu
Summary: Through the study of the Baige landslide event, it was found that deep-seated gravitational slope deformations play a crucial role in the evolution process of landslides, while river downcutting and earthquakes also have impacts on the evolution of landslides.
Article
Chemistry, Multidisciplinary
Danqing Song, Zhuo Chen, Lihu Dong, Wencheng Zhu
Summary: The dynamic response characteristics of rock mass slopes subjected to seismic excitation were systematically investigated using time-domain and frequency-domain analyses. Factors such as topographic and geological conditions, weak bedded structural planes, and ground motion direction were found to influence the dynamic response characteristics of the slope. Additionally, the impacts of slope surface, elevation, and structural plane on the seismic response characteristics were clarified through numerical simulations.
APPLIED SCIENCES-BASEL
(2021)
Article
Geosciences, Multidisciplinary
Xiangang Jiang, Qin Huang, Zongliang Zhang, Luis E. Vallejo, Xiaoqing Chen, Wanyu Zhao, Hongyan Deng, Xingrong Liu, Danqing Song, Zhuo Chen
Summary: Clay content has a significant influence on the crack evolution process of clay-sand mixture. When clay content is greater than 50%, the crack development process can be divided into three stages; when clay content is less than 50%, the characteristics of the crack development process are short length, dense crack spacing, no main cracks, and no obvious stages. The addition of clay can increase the tensile strength of the mixture and restrain crack development. The water content of samples decreases nonlinearly with drying time, and the residual water content increases with clay content.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Geological
Shuai Zhang, Chao Hu, Shuang Zheng, Zhuo Chen
Summary: The improved SRM method developed in this paper not only analyzes the stability and deformation of the slope, but also simulates the progressive process of slope failure and obtains the real deformation of the slope. The results show that the slope usually experiences a large displacement before failure, and the deformation is stepwise. Compared with SRM and LDSRM, the improved method shows significantly different results in horizontal displacement calculation when the slope is in a critical failure state.
INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Danqing Song, Zhuo Chen, Lihu Dong, Wencheng Zhu
Summary: The study systematically investigates the dynamic response characteristics of rock slopes containing weak structural planes under seismic waves in the time domain, frequency domain, and time-frequency domain. The results show that slopes containing structural planes have dynamic amplification effects and the frequency of waves is related to the dynamic response of slopes. Structural planes significantly influence the seismic failure mechanism of slopes and multi-domain coupling analysis can provide comprehensive insights for seismic design.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Engineering, Civil
Danqing Song, Xiaoli Liu, Zhuo Chen, Jundong Chen, Jianhua Cai
Summary: The excavation of tunnels has a significant impact on the stability and deformation characteristics of rock slopes. The deformation of the slope is controlled by discontinuities, and the supporting structure can reduce deformation, influence shear strain distribution, and is controlled by specific discontinuities in terms of mechanical properties.
KSCE JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Danqing Song, Zhuo Chen, Lihu Dong, Gaojie Tang, Kelu Zhang, Heng Wang
GEOMATICS NATURAL HAZARDS & RISK
(2020)
