Article
Environmental Sciences
Xinyi Guo, Bihong Fu, Jie Du, Pilong Shi, Qingyu Chen, Wenyuan Zhang
Summary: This study compared landslide susceptibility models in seismic regions with different lithological features by selecting the Jiuzhaigou and Minxian earthquakes, finding that a coupling model is suitable for both rock and loess landslides.
Article
Geosciences, Multidisciplinary
Wan-li Xie, Qianyi Guo, Jason Y. Wu, Ping Li, Hui Yang, Maosheng Zhang
Summary: This paper discusses the deformation characteristics and stability analysis of loess landslides through a case study, revealing the causes of landslides under heavy rainfall conditions and proposing the effective method of stabilization using anti-slide piles.
Article
Engineering, Geological
Jiawei Xu, Kyohei Ueda, Ryosuke Uzuoka
Summary: The response of slopes with shaking-induced cracks to subsequent rainfall and the corresponding landslide-triggering mechanisms were examined in centrifuge model tests. The failure pattern of slopes subject to both shaking and then rainfall differs from those subject to only rainfall. The detrimental effect of cracks on soil displacement was more evident under heavy post-shaking rainfall, resulting in rapid and massive landslides.
Article
Engineering, Environmental
Zhiyu Guo, Qiangbing Huang, Yue Liu, Zikan Jiang, Qingyu Xie, Daijin Yu
Summary: This study analyzed the influence of slope shape parameters and their design optimization on the stability of multi-stage slopes. Numerical analysis and sensitivity analysis revealed the correlation between slope shape parameters and the factor of safety (FS), and proposed a design optimization approach for multi-stage slopes.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Jianqi Zhuang, Penghui Ma, Jiewei Zhan, Yi Zhu, Jiaxu Kong, Xinghua Zhu, Yanqiu Leng, Jianbing Peng
Summary: This paper studies the relationships and influential factors of landslides in the densely distributed Chinese Loess Plateau (CLP). It finds that the area-volume relationship of landslides follows a power law trend and that the majority of landslides are long run-out landslides. The size of landslides increases with an increase in hypsometric integral, and factors such as loess thickness, human activities, and slope have both positive and negative effects on landslides in the CLP. The study also suggests that landslide risk will increase with climate change.
GEOMATICS NATURAL HAZARDS & RISK
(2022)
Article
Multidisciplinary Sciences
Jiaqi Wu, Fuchu Dai, Pan Liu, Zhiquan Huang, Lingchao Meng
Summary: Agricultural irrigation in the South Jingyang tableland in Shaanxi Province, China has caused the groundwater level to rise, leading to loess landslides that pose a threat to the safety of local residents. Research conducted in the area focuses on investigating the stratigraphic structure and groundwater level distribution in order to understand the formation mechanism of the landslides. By using techniques such as electrical resistivity tomography (ERT), borehole data, and laboratory tests, the groundwater level distribution and stratigraphic structure were determined and a 3D geological model was created. The results demonstrate that ERT is an effective method for reflecting the stratigraphic structure and hydrological characteristics of the area.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Chenfeng Wang, Xudong Fu, Bin Wang, Zheng Gong, Ga Zhang, Xiaoping Wang
Summary: An improved hillslope erosion dynamic model (HED) based on sediment feedback mechanism was established and evaluated using field data from the Loess Plateau of China. The power function was found to accurately reproduce soil detachment and sediment transport capacities under varying field slope conditions. HED can be integrated into distributed watershed models for predicting sediment discharge within runoff events.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Xuemeng Su, Zhengchao Zhou, Jun'e Liu, Liguo Cao, Junyang Liu, Peipei Wang
Summary: The study focused on root reinforcement of Artemisia sacrorum after land-use change to forestland and grassland in the Loess Plateau of China. Results showed that root parameters were concentrated in the topsoil layer, with tensile characteristics significantly correlated with root diameters. Artemisia sacrorum had a slope safety factor larger than 1, indicating its capability to stabilize slopes in the silt loam area of the Loess Plateau, with implications for slope stability and geological hazards in arid environments.
ECOLOGICAL MODELLING
(2021)
Article
Engineering, Geological
Jia-xu Kong, Jian-qi Zhuang, Jian-bing Peng, Peng-hui Ma, Jie-wei Zhan, Jia-qi Mu, Jie Wang, Zuo-peng Wang
Summary: Landslide scale measurement and hazard risk assessment are crucial in understanding the impact of landslides. This study utilized high-resolution terrain and orthophoto data obtained through UAV photography and field surveys to calculate sliding and deposit data for loess landslides. The results showed correlations between sliding volume and sliding area with power-law distribution, as well as the influence of sliding volume and deposit volume on certain ratios. The study also introduced the semi-ellipsoid model for landslide volume assessment, which yielded promising results.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2023)
Article
Chemistry, Multidisciplinary
Yuting Yang, Gang Mei
Summary: This paper introduces a deep transfer learning approach for efficient and effective identification of slope surface cracks to achieve fast monitoring and early warning of geohazards.
APPLIED SCIENCES-BASEL
(2021)
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
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
Multidisciplinary Sciences
Rong Zhang, Bin Wang
Summary: Vertical joints are generated at the top of the loess slope due to unloading and collapsibility of the loess, posing a significant risk for landslides. This study uses laboratory tests, numerical simulation, and theoretical analysis to analyze the influence of vertical joints on loess slope stability. The strength characteristics and failure modes of samples containing vertical joints are analyzed. Finite element numerical analysis is used to calculate the impact of different lengths and slope distances of vertical joints on slope safety coefficient and sliding surface position. The research provides insights for calculating the safety coefficient and evaluating slope stability of loess slopes with vertical joints.
SCIENTIFIC REPORTS
(2023)
Article
Water Resources
Yuanxiao Xu, Guofeng Zhu, Qiaozhuo Wan, Leilei Yong, Huiying Ma, Zhigang Sun, Zhuanxia Zhang, Dongdong Qiu
Summary: The study focused on the impact of terrace construction on soil moisture in the Yangpota Mountain terraces in Zhuanglang County, Loess Plateau Hilly Area. Results showed that terraces had higher soil moisture compared to slope farmland and natural vegetation surfaces, with abandoned terraces having higher soil moisture than those in use. Additionally, differences in crop types and evaporation were found to play an important role in soil moisture levels due to variations in root systems and water requirements.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Engineering, Geological
Jiaxu Kong, Jianqi Zhuang, Jianbing Peng, Penghui Ma, Jiewei Zhan, Jiaqi Mu, Jie Wang, Dan Zhang, Jia Zheng, Yuting Fu, Shibao Wang, Chenhui Du
Summary: This study analyzed the formation mechanism of landslides during freeze-thaw periods in the Chinese Loess Plateau (CLP). Through triaxial tests, resistivity experiments, and CT technology, the evolution process of microstructure and strength was examined. The results showed that freeze-thaw cycles significantly weaken the strength of the soil, leading to landslides.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Geological
Yuxuan Zhu, Fuchu Dai, Xin Yao
QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
(2020)
Article
Green & Sustainable Science & Technology
Nauman Ijaz, Fuchu Dai, Lingchao Meng, Zia Ur Rehman, Hongqiu Zhang
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Environmental Sciences
Nauman Ijaz, Fuchu Dai, Zia Ur Rehman
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Environmental Sciences
Fuchu Dai, Qinghua Guo
Article
Engineering, Environmental
Yuxuan Zhu, Fuchu Dai
Summary: The study investigated the kinetic and fragmentation characteristics of the Xuzha rock avalanche in China. It found that the avalanche originated from a steep slope, causing a tributary of the Jinsha River to be dammed, and experienced intensive fragmentation during transport. Simulation results showed that the avalanche lasted about 80 s, had a maximum velocity of 73 m/s, and matched well with field observations, indicating that dynamic fragmentation and fine particle fluidization were the reasonable explanations for its high mobility.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Engineering, Geological
Zhiqiang Zhao, Fuchu Dai, Hong Min, Xinbin Tu
Summary: This study conducted a field infiltration experiment in northwest China to monitor the infiltration process in thick unsaturated loess. The results showed an increase in volumetric water content and a decrease in matric suction with the arrival of the wetting front, forming preferential flow and a transient perched water table. The research helps understand the migration of irrigation water in thick unsaturated loess and the recharge mechanism of the deep groundwater table.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Zhihong Zhang, Yanchen Guo, Fuchu Dai, Siyuan Zhao, Aijun Yao
Summary: This study presents detailed field investigations of the Xiaguiwa landslide, revealing the development of deep-seated buckling deformation during rapid slope failure. The results have important implications for understanding the characteristics of rapid large landslides in the high-relief region of the Tibetan Plateau.
QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
(2022)
Article
Geography, Physical
Lianji Liang, Zhourui Zhang, Fuchu Dai
Summary: Numerous damming landslides have occurred at the southeastern margin of the Tibetan Plateau due to tectonic activities, river erosion, and climate change. This study investigates a Late Pleistocene paleo-landslide damming event in the Induba area and determines that it originated from an inclined counter rock mass and was likely triggered by paleo-earthquakes or a combination of earthquakes and rainfall. The study also provides insights into the formation of old dammed landslides and the evolution of river valley landforms in the region.
QUATERNARY INTERNATIONAL
(2022)
Article
Geography, Physical
Lianji Liang, Xiufu Qiao, Fuchu Dai, Ning Zhong, Hanchao Jiang
Summary: Soft-sediment deformation structures (SSDSs) are widely developed in lacustrine sediments in tectonically active regions, containing valuable information on regional fault activity. This study identified multiple SSDSs in Late Pleistocene lacustrine sediments in northeastern Pamir, showing deformation mechanisms related to liquefaction, fluidization, and thixotropic behaviors. AMS radiocarbon dating data revealed formation periods of the SSDSs, indicating a possible relation to seismic activities and enhancing understanding of fault activity in the region.
QUATERNARY INTERNATIONAL
(2021)
Article
Engineering, Civil
Nauman Ijaz, Weimin Ye, Zia Ur Rehman, Fuchu Dai, Zain Ijaz
Summary: Numerous laboratory-based solutions have been proposed for stabilizing unsaturated expansive soil by recycling lignosulphonate. However, practical assessments are required for treating rainfall-induced surficial failure in unsaturated expansive soil slopes. The stability of LS-treated surficial layer requires consideration of the hydro-mechanical effect. Among LS-based stabilizers, composite cementing admixture (CCA) provides the safest critical factor of safety for slope stability while mitigating the heave problem.
TRANSPORTATION GEOTECHNICS
(2022)
Article
Geography, Physical
Siyuan Zhao, Zhiliang He, Jianhui Deng, Hua Li, Fuchu Dai, Yunjian Gao, Fei Chen
Summary: Giant landslides frequently occur in the valleys of the Tibetan Plateau, blocking rivers and impacting fluvial processes. The Qianjincun landslide in the Nu River is the highest natural dam among all completely river-blocking landslides. It formed in one of the deepest valleys in the world and the dammed lake was breached around the end of the Dali glaciation. Analysis shows a correlation between dam formation and high relief. Understanding the feedback between giant landslides and fluvial processes can help assess disaster risks in high-relief areas effectively.
Article
Geosciences, Multidisciplinary
Siyuan Zhao, Fuchu Dai, Jianhui Deng, Hong Wen, Hua Li, Fei Chen
Summary: This study investigated landslides in the Sichuan-Tibet Engineering Corridor using geomorphological and geological analyses. The results showed that landslides occurred preferentially in high-elevation river valley regions and were controlled by soft rock types and geological features such as faults and rivers. The susceptibility of landslides varied across different river catchments and was strongly influenced by lithology, elevation, relief, slope, and distance to faults.
Article
Multidisciplinary Sciences
Jiaqi Wu, Fuchu Dai, Pan Liu, Zhiquan Huang, Lingchao Meng
Summary: Agricultural irrigation in the South Jingyang tableland in Shaanxi Province, China has caused the groundwater level to rise, leading to loess landslides that pose a threat to the safety of local residents. Research conducted in the area focuses on investigating the stratigraphic structure and groundwater level distribution in order to understand the formation mechanism of the landslides. By using techniques such as electrical resistivity tomography (ERT), borehole data, and laboratory tests, the groundwater level distribution and stratigraphic structure were determined and a 3D geological model was created. The results demonstrate that ERT is an effective method for reflecting the stratigraphic structure and hydrological characteristics of the area.
SCIENTIFIC REPORTS
(2023)
Article
Geochemistry & Geophysics
Jiaqi Wu, Fuchu Dai, Pan Liu, Zhiquan Huang, Daixuan Wu
Summary: The South Jingyang tableland in Shaanxi Province, China, has experienced a continuous rise in groundwater table due to agricultural irrigation, leading to a series of loess landslides. This study investigated the distribution of the groundwater table using boreholes, electrical resistivity tomography (ERT), and laboratory tests. By analyzing the relationship between apparent resistivity and water content at different depths, the distribution of the groundwater table was determined. The study found that the groundwater table elevation is higher in the southern study area compared to the northern area, gradually decreasing from south to north. This research provides valuable information for understanding the formation mechanism of landslides.
Article
Engineering, Geological
Zhao Zhi-qiang, Dai Fu-chu, Min Hong, Tan Ye
Summary: The combination of multiple irrigation events significantly promotes downward water percolation through the wetting front superposition effect, leading to decreased infiltration capacity with depth. Below 5.6 meters in depth, the velocity of infiltration is lower than the hydraulic conductivity of the soil, driven solely by gravity, with moisture content and matric suction almost unchanged.
ROCK AND SOIL MECHANICS
(2021)
