Bulletin of Engineering Geology and the Environment最新文献_第9页

Comparative effects of biochars from different feedstocks on the desiccation process of loess

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-17 DOI: 10.1007/s10064-025-04153-x

Yao Geng, Pengju Qin, Yu Lu, Yifei Sun, Jun Zhang, Xiaoqiang Dong

{"title":"Comparative effects of biochars from different feedstocks on the desiccation process of loess","authors":"Yao Geng, Pengju Qin, Yu Lu, Yifei Sun, Jun Zhang, Xiaoqiang Dong","doi":"10.1007/s10064-025-04153-x","DOIUrl":"10.1007/s10064-025-04153-x","url":null,"abstract":"<div><p>Biochar is widely used for the improvement of soil in farmlands. However, the effect of biochar from different feedstocks on property changes during loess desiccation remains unclear. In this study, four types of biochar, including sludge biochar (SBC), wood biochar (WBC), cow dung biochar (CDBC), and corn straw biochar (CSBC), were mixed with loess from the top layer of the wheat field at concentrations of 0%, 5%, and 10%. Their impacts on loess soil evaporation, cracking, CO<sub>2</sub> emissions and electrical resistivity during desiccation were evaluated and microstructural changes after desiccation were analyzed. The results showed significant improvements in water retention with the addition of biochar, especially with CSBC, which prolonged the drying time. The addition of biochar suppressed cracks formed during loess desiccation, with CSBC having the most significant effect, reducing the crack intensity factor (CIF) by 70.47% and 89.01% for CSBC5 and CSBC10, respectively. The mean CO<sub>2</sub> concentration during desiccation decreased for only three specimens (CSBC5, SBC5 and CDBC10). The CO<sub>2</sub>–C fluxes after the addition of biochar were not lower than those of pure loess. The addition of biochar reduced soil resistivity and altered the pore size distribution (PSD) of loess. Biochar from different feedstocks improves water retention and inhibits cracking to varying degrees during loess desiccation, with 5% CSBC proving to be the most effective in optimizing soil properties. The electrical resistivity effectively characterizes the macroscopic and microscopic variations in loess.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the effects of characterization methods selection on the landslide susceptibility: a comparison between logistic regression (LR), naive bayes (NB) and radial basis function network (RBF Network)

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-15 DOI: 10.1007/s10064-025-04097-2

Hui Shang, Lixiang Su, Yang Liu, Paraskevas Tsangaratos, Ioanna Ilia, Wei Chen, Shaobo Cui, Zhao Duan

{"title":"Assessment of the effects of characterization methods selection on the landslide susceptibility: a comparison between logistic regression (LR), naive bayes (NB) and radial basis function network (RBF Network)","authors":"Hui Shang, Lixiang Su, Yang Liu, Paraskevas Tsangaratos, Ioanna Ilia, Wei Chen, Shaobo Cui, Zhao Duan","doi":"10.1007/s10064-025-04097-2","DOIUrl":"10.1007/s10064-025-04097-2","url":null,"abstract":"<div><p>Landslides are natural disasters that are difficult to control without continuous monitoring. Xiji County is located in the southern mountainous area of Ningxia Hui Autonomous Region, where geological and ecological conditions are complex and the number and extent of landslides hinder local economic development. To address this, a comprehensive landslide inventory was created, comprising 529 historical landslides and an equal number of non-landslide points. Thorough analysis of these datasets ensured an unbiased assessment. The data was randomly divided into training (70%) and validation (30%) sets. Using 15 spatial datasets, including elevation, slope, curvature, distance to various features, rainfall, land use, lithology, and maximum ground acceleration, a system for landslide susceptibility evaluation was established with 12 influential indices. The frequency ratio method was applied to analyze the relationship between landslides and each index. Three evaluation models (LR, NB, and RBF Network) were built, utilizing different landslide characterization methods (landslide point and landslide polygon), resulting in six result maps for landslide susceptibility evaluation. Statistical analysis of frequency ratios in susceptibility class intervals ensured model rationality. The NB model based on landslide polygons showed optimal performance with high success rate (AUC = 0.965), prediction rate (AUC = 0.886), consistency (FRA = 0.873). This methodology and landslide susceptibility map provide decision-making support for researchers and local governments in mitigating future geological hazards.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stabilization of expansive soil through MICP and jute fiber reinforcement: strength and shrink-swell analysis

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-15 DOI: 10.1007/s10064-025-04159-5

Shantanu Paul, Tisha Sikder, Mumtahmina Mim

{"title":"Stabilization of expansive soil through MICP and jute fiber reinforcement: strength and shrink-swell analysis","authors":"Shantanu Paul, Tisha Sikder, Mumtahmina Mim","doi":"10.1007/s10064-025-04159-5","DOIUrl":"10.1007/s10064-025-04159-5","url":null,"abstract":"<div><p>Expanding on the challenges of expansive soils to civil infrastructure, this research delves into the synergistic application of microbially induced calcium carbonate precipitation (MICP) through bio-stimulation and natural fiber reinforcement to mitigate soil swell-shrink behavior and enhance soil strength. This research diverges from traditional methods by addressing their economic and environmental limitations. The dual strategy of bio-stimulation with natural fiber reinforcement was assessed through laboratory tests, including unconfined compression, 1D swell, linear shrinkage tests, and microstructural analysis. This methodology involved preparing solutions to foster bacterial growth and strategically adding jute fibers to enhance the soil matrix. Results revealed significant improvements in soil strength (up to 186%), and reductions in swell strain (up to 85%) and swell pressure (up to 90%), with the optimal jute fiber content at 1.5%. Additionally, a significant increase in calcium carbonate content (163–176%) highlighted bio-stimulation's role in soil stabilization. SEM analysis showed that bio-stimulation and jute fiber reinforcement transformed the soil microstructure, enhancing cohesion and reducing deformability. These outcomes highlight the promise of combining bio-stimulated MICP with natural fiber reinforcement as an eco-friendly and efficient approach to soil stabilization. They also add to the growing body of knowledge on tackling the issues posed by expansive soils in civil engineering applications.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-scale mechanical behaviors of rock mass based on synthetic rock mass

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-14 DOI: 10.1007/s10064-025-04136-y

Wen-Jie Xu, Kaleem Ullah Jan Khan

{"title":"Multi-scale mechanical behaviors of rock mass based on synthetic rock mass","authors":"Wen-Jie Xu, Kaleem Ullah Jan Khan","doi":"10.1007/s10064-025-04136-y","DOIUrl":"10.1007/s10064-025-04136-y","url":null,"abstract":"<div><p>The mechanical behaviors of rock mass containing discrete fracture networks (DFNs) are always a challenging topic in rock engineering. A methodology is presented that incorporates the generation of synthetic rock mass (SRM) and investigates its mechanical behavior using a GPU-based discrete element method (DEM) software, CoSim-DEM. This approach considers factors such as fracture intensity, variations in domain size, and other relevant parameters. The particle size ratio (PSR), which means the ratio of the particle size to the characteristic scale of the sample, is used to analyze the influence of the element/particle size on DEM numerical results. When the PSR is less than 0.1, it has little influence on the numerical results for both rock and rock mass samples. The numerical tests indicate that both fracture intensity and sample size significantly affect the failure and mechanical behaviors of rock mass samples. Based on a generated SRM, rock mass samples with different sizes are generated and used for numerical uniaxial tests. The results indicate that the rock mass exhibits an obvious scale-dependent characteristic, with the representative elementary volume (REV) being approximately 1.5 times the maximum size of the fractures. This study may provide a novel approach to the study of rock mass mechanics and the development of numerical test methods.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using drilling noise and vibration signals for rock layer identification: a study on layered rock samples with weak interlayers

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-14 DOI: 10.1007/s10064-025-04139-9

Xiaolei Yue, Dan Huang, Zhongwen Yue, Jian Zhao

{"title":"Using drilling noise and vibration signals for rock layer identification: a study on layered rock samples with weak interlayers","authors":"Xiaolei Yue, Dan Huang, Zhongwen Yue, Jian Zhao","doi":"10.1007/s10064-025-04139-9","DOIUrl":"10.1007/s10064-025-04139-9","url":null,"abstract":"<div><p>While-drilling identification technology is a crucial part of intelligent mining development. The results provide a scientific basis for real-time adjustment of support parameters, promotes safe and efficient mining. Noise and vibration generated during the rock drilling process vary significantly between different rock materials, offering a new method for identifying rock characteristics. This study used a digital drilling test system to conduct experiments on layered rocks with weak interlayers, monitoring drilling parameters and borehole sound pressure and vibration acceleration in real time. Time-domain and frequency-domain features of borehole sound pressure and vibration signals were analyzed to identify rock characteristics in weak interlayer areas. The results show that these methods can clearly identify the location of weak interlayers. The spectral characteristics of different rock materials are significantly different, indicating a strong correlation between borehole sound and vibration characteristics and the mechanical properties of the rock. Comparing sound and vibration identification results with drilling parameters at weak interlayers verified the accuracy of the identification, providing a basis for lithology identification using multiple parameters. This study shows the importance of drilling noise and vibration parameters in enhancing while-drilling parameters in the digital drilling process.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial prediction of InSAR-derived hillslope velocities via deep learning

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-14 DOI: 10.1007/s10064-025-04161-x

Jun He, Hakan Tanyas, Ashok Dahal, Da Huang, Luigi Lombardo

{"title":"Spatial prediction of InSAR-derived hillslope velocities via deep learning","authors":"Jun He, Hakan Tanyas, Ashok Dahal, Da Huang, Luigi Lombardo","doi":"10.1007/s10064-025-04161-x","DOIUrl":"10.1007/s10064-025-04161-x","url":null,"abstract":"<div><p>Spatiotemporal patterns of earth surface deformation are influenced by a combination of static and dynamic environmental characteristics specific to any landscape of interest. Nowadays, these patterns can be captured for larger areas using Interferometric Synthetic-Aperture Radar (InSAR) technologies and yet, their spatial prediction has been poorly investigated so far. Here, we initially compute the InSAR-derived line-of-sight hillslope velocities (V<sub>LOS</sub>) and calculate their mean (ranging from 0 to ~ 30 mm/y) and maximum (ranging from 0 to ~ 60 mm/y) values per Slope Units (SUs). These separately constitute the response variables to be modelled through a series of deep learning routines: <i>i</i>) a basic neural network (Multi-Layer Perceptron), <i>ii</i>) a Graph Convolutional Network implemented to capture spatial dependence among neighbouring SUs, and <i>iii</i>) an Edge-Featured Graph Attention Network sensitive not only to the interdependence brought by the SU positions in space but also to reciprocal terrain characteristics. We assessed the model performance for both models via Mean Absolute Error (MAE), r-squared (R<sup>2</sup>), and Pearson Correlation Coefficient (PCC). The Edge-Featured Graph Attention Network model produced the best performance. The result for the first model targeting the mean V<sub>LOS</sub> are 4.75 mm/y, 0.63, and 0.79 for MAE, R<sup>2</sup>, and PCC, respectively. As for the second model, targeting the maximum V<sub>LOS</sub>, these are 19.52 mm/y, 0.55 and 0.75. We also showcased interpretable multivariate models, where the contribution of each predictor to the InSAR velocities is summarized and interpreted. This represent a clear example where InSAR-derived hillslope velocities are accurately estimated at regional scales, thus setting up the scene for further advances towards space-time regional deformation modelling. </p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04161-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rainfall thresholds for shallow landslides considering rainfall temporal patterns

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-14 DOI: 10.1007/s10064-025-04144-y

Binru Zhao, Roberto J. Marin, Wen Luo, Zhaoyuan Yu, Linwang Yuan

{"title":"Rainfall thresholds for shallow landslides considering rainfall temporal patterns","authors":"Binru Zhao, Roberto J. Marin, Wen Luo, Zhaoyuan Yu, Linwang Yuan","doi":"10.1007/s10064-025-04144-y","DOIUrl":"10.1007/s10064-025-04144-y","url":null,"abstract":"<div><p>Recent advancements in rainfall observation and forecasting have enabled the real-time identification of rainfall temporal patterns, thereby enhancing the prediction of landslides by accounting for their temporal dynamics. However, conventional landslide prediction methodologies rely on average rainfall characteristics, such as intensity (I) and duration (D), overlooking the influence of rainfall temporal details. To overcome this limitation, this study proposes an innovative approach to defining rainfall thresholds that integrate rainfall temporal patterns. These thresholds are designed to provide probabilistic estimations of landslide occurrences for rainfall events characterized by constant intensity and duration, while considering the temporal dynamics. Investigating the impact of rainfall temporal patterns on landslide occurrences reveals that the initiation of landslides is primarily influenced by the infiltrated rainfall rather than the total rainfall amount. Specifically, rainfall temporal patterns characterized by fewer high-intensity values tend to result in greater infiltration, thereby increasing the likelihood of landslide triggering. Furthermore, rainfall concentrated in the early and middle stages of an event is associated with a higher probability of landslide occurrence. This study's findings underscore the importance of incorporating rainfall temporal patterns into landslide early warning systems, thereby facilitating more effective risk mitigation strategies.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of stress difference and microfabric on the strength of deep granite

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-13 DOI: 10.1007/s10064-025-04148-8

Liangjie Gu, Jun Zhao, Yangyi Zhou, Yan Zhang, Zhaofeng Wang

{"title":"Effect of stress difference and microfabric on the strength of deep granite","authors":"Liangjie Gu, Jun Zhao, Yangyi Zhou, Yan Zhang, Zhaofeng Wang","doi":"10.1007/s10064-025-04148-8","DOIUrl":"10.1007/s10064-025-04148-8","url":null,"abstract":"<div><p>A multitude of subterranean engineering projects are established within granite bodies, where the mechanical properties of granite are predominantly influenced by the existing stress environment and inherent microfabric. As the depth of engineering projects increases, the characteristic stress differential becomes more pronounced, indicating a discernible distinction from the stress conditions encountered in shallow engineering applications. To elucidate the influence mechanism of microfabric and stress disparity on granite strength, a quantitative analysis is conducted on the microfabric of five types of granites. The results show that the strength of granite is primarily determined by initial damage, structural coefficient, biotite content, and quartz content. With an increase in stress differential, the impact of initial damage and biotite content on granite strength diminishes, while the influence of quartz content and structural coefficient on granite strength begins to intensify. A subjective and objective comprehensive evaluation model is established to quantify the weight ratio of microfabric on granite strength. The coupling mechanism of stress difference and microfabric on the granite strength is revealed from the rock fracture directional development induced by the increase of stress difference. The results can be used as a guide to understand the granite strength characteristics according to the lithofacies and true three-dimensional stress environment, and provide an effective theoretical basis for the safe construction of deep granite engineering.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lateral residual stress effect on the swelling pressure of compacted expansive soil and microscopic mechanism

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-13 DOI: 10.1007/s10064-025-04162-w

Zhang-Jun Dai, Zi-Hang Liu, Ze-Cheng Chi, Wei Wang, Kang Huang, Shan-Xiong Chen

{"title":"Lateral residual stress effect on the swelling pressure of compacted expansive soil and microscopic mechanism","authors":"Zhang-Jun Dai, Zi-Hang Liu, Ze-Cheng Chi, Wei Wang, Kang Huang, Shan-Xiong Chen","doi":"10.1007/s10064-025-04162-w","DOIUrl":"10.1007/s10064-025-04162-w","url":null,"abstract":"<div><p>In pipeline engineering in expansive soil areas, swelling pressure is frequently determined by laboratory tests as an essential design parameter. During the processes of filling and rolling, lateral residual stress exists in the soil, which significantly influences the swelling pressure. In this study, a series of expansion and residual stress tests is conducted on compacted expansive soil s with different initial dry densities and moisture contents. The variation rules of the swelling pressure for different specimen preparation methods are compared. The effects of the initial conditions on the lateral residual stress are analyzed. The range of initial conditions for the influence of lateral residual stress on swelling pressure is investigated. In addition, based on the Mercury Intrusion Porosimetry (MIP), the change rule of the soil microstructure under different initial conditions is obtained. A microcosmic mechanism for the lateral residual stress acting on the vertical swelling pressure is proposed. The results demonstrate that the lateral residual stress increases with increasing dry density and decreases with increasing moisture content. Based on the variation range of the initial specimen condition, the influence of the lateral residual stress on the swelling pressure can be distinguished using slash (<span>({omega }_{0}text{=}112.5{rho }_{0}-157.75)</span>). When the lateral residual stress exceeds the range of approximately 130–170 kPa, the swelling pressure is influenced, and the greater the lateral residual stress, the greater the effect.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discrete element simulation of shallow soil landslides with weak interlayer due to the mechanism of unsaturated seepage

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-02-13 DOI: 10.1007/s10064-025-04102-8

Haitao Yu, Zhibin Liu, Yasen Tang, Yongfeng Deng, Tingyi Luo

{"title":"Discrete element simulation of shallow soil landslides with weak interlayer due to the mechanism of unsaturated seepage","authors":"Haitao Yu, Zhibin Liu, Yasen Tang, Yongfeng Deng, Tingyi Luo","doi":"10.1007/s10064-025-04102-8","DOIUrl":"10.1007/s10064-025-04102-8","url":null,"abstract":"<div><p>A hybrid discrete-continuum numerical method was employed to study the shallow red-bed soil landslides that frequently occurred in Southwest China. This study used a clay slope with weak interlayer in Guangxi, China, as a geological model to simulate water infiltration driven by differences in water content in particles. The landslide’s kinematic behavior was performed by the discrete element software MatDEM. Results indicate that the spatial variability of the wetting front is caused by the thickness difference of the soil layer. The water content of the weak interlayer particles increases nonlinearly with time, and the bond between particles decays exponentially with the increase of its water content. In red-bed soil slopes, both higher initial water content and higher recharge boundary water content promote landslide initiation. After triggering the landslide, the soil particles at the foot of the slope and in the weak interlayer move first, and the maximum velocity and kinetic energy of the particles show a trend of first increase and then decrease. During the dynamic process, the sliding body may have an extrusion effect on the underlying soil layer, resulting in a new sliding surface. This study evaluates the effectiveness and potential of this discrete-continuum hybrid numerical approach for revealing the disaster-causing mechanism of rainfall-induced landslides in red-bed areas.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 3","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0