Bulletin of Engineering Geology and the Environment最新文献_第4页

An efficient semi-automated characterization of rock mass discontinuities from 3D point clouds based on Nutcracker Optimization Algorithm-improved probabilistic neural network

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-31 DOI: 10.1007/s10064-025-04227-w

Shuyang Han, Dawei Tong, Binping Wu, Jiajun Wang, Xiaoling Wang, Wanyu Zhang

{"title":"An efficient semi-automated characterization of rock mass discontinuities from 3D point clouds based on Nutcracker Optimization Algorithm-improved probabilistic neural network","authors":"Shuyang Han, Dawei Tong, Binping Wu, Jiajun Wang, Xiaoling Wang, Wanyu Zhang","doi":"10.1007/s10064-025-04227-w","DOIUrl":"10.1007/s10064-025-04227-w","url":null,"abstract":"<div><p>Discontinuities in rock masses significantly influence their mechanical properties and are critical for engineering applications, making it essential to thoroughly understand their geometric parameters. 3D point clouds serve as fundamental data for efficiently and accurately analyzing discontinuity orientations. In this context, a novel semi-automated method that employs a Nutcracker Optimization Algorithm-improved Probabilistic Neural Network (NOA-PNN) is proposed. The NOA enables the PNN to quickly identify the optimal smoothing factor, balancing both accuracy and efficiency. This method utilizes not only normal vectors, but also point coordinates, curvature, and density, incorporating a broader set of features to accurately identify points on discontinuities. The NOA-PNN model, trained on manually selected samples, swiftly identifies discontinuity sets while efficiently filtering out noise. Density-Based Spatial Clustering of Applications with Noise (DBSCAN) is then used to extract single discontinuities within each set. Each discontinuity is fitted to a plane using a Principal Component Analysis (PCA)-based least squares method, facilitating the measurement of their spatial geometric parameters. Validation through two cases demonstrated that the proposed method achieved an average deviation of less than 5° in both dip direction and dip angle, exhibiting potential advantages in terms of accuracy and efficiency when compared to other important studies or software. This method significantly improves computational efficiency and achieves satisfactory results with only a small number of randomly selected samples. Its low requirements for sample quality and operator expertise make it highly operable and easily adaptable for practical engineering applications.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740869","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

Shear failure and strength upscaling characterization of block-in-matrix geomaterials through the bim cell

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-27 DOI: 10.1007/s10064-025-04208-z

Minghui Ren, Hai Pu, Guangsi Zhao, Runhua Zhang, Qian Yin

{"title":"Shear failure and strength upscaling characterization of block-in-matrix geomaterials through the bim cell","authors":"Minghui Ren, Hai Pu, Guangsi Zhao, Runhua Zhang, Qian Yin","doi":"10.1007/s10064-025-04208-z","DOIUrl":"10.1007/s10064-025-04208-z","url":null,"abstract":"<div><p>The coupled effects of heterogeneous composition and block structure make it challenging to establish a generalized mechanical model for block-in-matrix (bim) geomaterials. In this study, the bim cell is introduced as a new unit to investigate the mechanical coupling behaviors of cohesive bim geomaterials. First, the structural features and experimental preparation of the bim cell are outlined, and the shear mechanical properties and failure surface of the bim cell were obtained through direct shear tests and laser scanning experiments. Additionally, a three-dimensional discrete element model of the bim cell was precisely constructed and calibrated to replicate the meso-failure process, and was applied in numerical tests of bim cells with varying block sizes. Based on experimental and numerical results, it was demonstrated that the mechanical behavior of the rock block is akin to the existence of a structural interface within the matrix, which significantly controll both the peak and residual strength mechanism. In the peak state, the mechanical effects of the block are primarily controlled by the block-matrix interface properties. Whereas in the residual state, the structural effects of the block gradually become prominent in the irregularity of shear-induced slip. Finally, the strength coupling law of the components has been discussed based on the construction of a mechanical unit. The core contribution of this paper lies in emphasizing the differences in the failure mechanisms of the bim geomaterials under different shear deformations, providing a solid meso-mechanical basis for the development of peak and residual strength models.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04208-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707178","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

Characteristics and failure mechanisms of rear reservoir-induced landslide-a case study of Shuiyunshan landslide in Xinshao, China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-27 DOI: 10.1007/s10064-025-04157-7

Weizhi Jiao, Ming Zhang, Dandan Liu, Long Yang, Mutian Liu, Guanhe Wang, Yilin Wang

{"title":"Characteristics and failure mechanisms of rear reservoir-induced landslide-a case study of Shuiyunshan landslide in Xinshao, China","authors":"Weizhi Jiao, Ming Zhang, Dandan Liu, Long Yang, Mutian Liu, Guanhe Wang, Yilin Wang","doi":"10.1007/s10064-025-04157-7","DOIUrl":"10.1007/s10064-025-04157-7","url":null,"abstract":"<div><p>The diversity of topographic and geological conditions significantly affects the kinematics and failure mechanisms of reservoir-induced landslides, especially those with rear reservoirs, which remain understudied. Taking the Shuiyunshan slow-moving landslide as a case study, this study investigates its failure mechanisms through a combination of field investigations, InSAR monitoring, and numerical simulations. The results reveal that the landslide is primarily driven by effective rainfall accumulation in a rear concave catchment area and sustained infiltration and erosion from rear reservoirs. The rear concave catchment area, which is 1.04 times the volume of the landslide body, alters the infiltration process of atmospheric rainfall. Approximately 61.9% of the rainfall generates surface runoff that accumulates in the rear reservoirs rather than discharging during rainstorms (100 mm/d). Furthermore, the distinctive geological structure featuring limestone interfacing with shale prolongs the infiltration process, while the rear reservoirs intensify groundwater recharge and weaken shale through prolonged immersion. The hydrostatic pressure and substantial hydraulic gradient exerted by the rear reservoirs significantly increase groundwater recharge within the landslide. Numerical simulations indicate that increasing the reservoir water level from 0 m to 3 m results in a decrease of approximately 16.3% in the safety factor of the most dangerous sliding surface of the landslide, highlighting the adverse impact of rear reservoirs on landslide stability. This study enhances the understanding of rear reservoir-induced landslides in mountainous regions, with implications for rural hydraulic infrastructure.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04157-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707179","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

A probabilistic framework for rainfall-induced instability in unsaturated slopes using bivariate rainfall and multivariate soil random fields

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-26 DOI: 10.1007/s10064-025-04171-9

Meaza Girma Demisa, Shuhong Wang, Qinkuan Hou, Sun Wenpan, Furui Dong, Bowen Han

{"title":"A probabilistic framework for rainfall-induced instability in unsaturated slopes using bivariate rainfall and multivariate soil random fields","authors":"Meaza Girma Demisa, Shuhong Wang, Qinkuan Hou, Sun Wenpan, Furui Dong, Bowen Han","doi":"10.1007/s10064-025-04171-9","DOIUrl":"10.1007/s10064-025-04171-9","url":null,"abstract":"<div><p>Rainfall is a critical factor in triggering landslides globally, with slope failure probability serving as a key metric for assessing landslide risks. While the spatial variability of soil properties and rainfall uncertainty significantly influence slope failure probability, limited studies have addressed these factors concurrently. Most existing research either emphasizes the spatial variability of soil properties or rainfall uncertainty, often neglecting their combined effects. To address this gap, this study introduces an integrated probabilistic framework that incorporates soil spatial variability and rainfall uncertainty into a slope model for the probabilistic slope seepage analysis based on Monte Carlo simulations. Multivariate soil random fields are employed to represent spatial variability, while rainfall uncertainty is modeled using a bivariate distribution of intensity and duration. This approach allows for the derivation of critical metrics, including the probability of slope failure under single rainfall events, annual failure probabilities, and failure probabilities over multiple years. The proposed framework was applied to a soil slope from the Sawala Laska road project in Ethiopia to demonstrate its effectiveness. Compared to traditional methods that consider only rainfall uncertainty or treat soil properties as deterministic, the framework provides a broader range of safety factor values and more precise estimates of critical rainfall durations. It also reveals that the probability of failure during a single rainfall event decreases, while annual failure probability increases gradually with more frequent rainfall events. By integrating spatial soil variability and rainfall uncertainty within a unified framework, this study advances landslide risk assessments and provides practical tools for slope stability analysis under real-world conditions.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698472","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

Innovative insights into micropile seismic response: Shaking table tests reveal critical dependencies and liquefaction mitigation

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-25 DOI: 10.1007/s10064-025-04225-y

Saba Ghassemi, Seyed Saeid Ekraminia, Masoud Hajialilue-Bonab, Hamid Reza Tohidvand, Mohammad Azarafza, Reza Derakhshani

{"title":"Innovative insights into micropile seismic response: Shaking table tests reveal critical dependencies and liquefaction mitigation","authors":"Saba Ghassemi, Seyed Saeid Ekraminia, Masoud Hajialilue-Bonab, Hamid Reza Tohidvand, Mohammad Azarafza, Reza Derakhshani","doi":"10.1007/s10064-025-04225-y","DOIUrl":"10.1007/s10064-025-04225-y","url":null,"abstract":"<div><p>This study presents a novel investigation into the seismic response of micropiles through shaking table tests, diverging from the predominant reliance on numerical analyses in assessing micropiles in liquefiable sites. Three models of shaking table tests were conducted using Iai scaling rules for physical modelling in 1-g conditions. The investigation reveals a significant dependency of micropile efficiency on the frequency of input motions. During the 2 Hz test, the entire model experienced liquefaction; however, in the 3 Hz test, there was a remarkable 29% reduction in excess pore water pressure. Additionally, the study explores the impacts of varying distances between micropiles and examines how liquefaction influences the induced peak accelerations at different depths within the soil media. Notably, recorded accelerations on the surface decreased by up to 76% in the free field tests during liquefaction. This comprehensive exploration advances our understanding of micropile behaviour under seismic conditions, offering valuable insights for soil improvement projects.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04225-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688594","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

Cracking behavior and deterioration of strength characteristics of silty clay under drying-wetting cycles 淤泥在干燥-湿润循环条件下的开裂行为和强度特性退化

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-21 DOI: 10.1007/s10064-025-04215-0

Mei Dong, Yunpeng Deng, YuHan Fu

{"title":"Cracking behavior and deterioration of strength characteristics of silty clay under drying-wetting cycles","authors":"Mei Dong, Yunpeng Deng, YuHan Fu","doi":"10.1007/s10064-025-04215-0","DOIUrl":"10.1007/s10064-025-04215-0","url":null,"abstract":"<div><p>The strength of clay subject to drying-wetting cycles is influenced by multiple factors, rendering the prediction of its variation trend challenging. To investigate the variation in strength characteristics of cohesive soil subjected to drying-wetting cycles, silty clay was obtained from the Liangzhu archaeological site to prepare remolded soil sample. Subsequently, saturated consolidated undrained triaxial tests of control group, crack inhibition group, varied dry water content group and different overconsolidation ratio (OCR) group were carried out under different drying-wetting cycles. A thorough analysis of the test results reveals that the number of drying-wetting cycles does not affect the soil's critical state or phase transformation state. The strength of soil exposed to drying-wetting cycles is influenced by a combination of factors, including cracks formed during drying, overconsolidation, and hysteresis phenomenon. Specifically, cracks will destroy the integrity of the soil and thus reduce its strength, while overconsolidation and hysteresis contribute to an enhancement in soil strength. As the number of drying-wetting cycles increases, the prominence of cracks in the soil becomes more pronounced. Additionally, as the dry water content decreases, the deviatoric stress, excess pore water pressure, and effective stress path of soil continue to evolve in the direction of increasing OCR. This research enriches the study of the strength characteristics of clay under drying-wetting cycles, providing a foundation for the preventive protection of earthen sites in humid environments in geotechnical engineering.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668378","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

Dimensional consistency-based modeling of disc cutter wear in hard rock tunneling utilizing integrated multivariate analysis

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-20 DOI: 10.1007/s10064-025-04221-2

Zhao Cui, Lihui Wang, Cuixia Su, Yilan Kang, Qian Zhang

{"title":"Dimensional consistency-based modeling of disc cutter wear in hard rock tunneling utilizing integrated multivariate analysis","authors":"Zhao Cui, Lihui Wang, Cuixia Su, Yilan Kang, Qian Zhang","doi":"10.1007/s10064-025-04221-2","DOIUrl":"10.1007/s10064-025-04221-2","url":null,"abstract":"<div><p>Disc cutter wear significantly impacts the stable and safe operation of Tunnel Boring Machines (TBMs) in hard rock tunneling,\u0000necessitating integrated analysis of its numerous related variables. This study began by examining multiple mechanisms related to disc cutter wear, comprehensively summarizing the key factors of wear mechanisms and converting them into four categories of practical engineering variables: load, yield property, relative motion distance, and hard mineral particle content. The correlation of individual variables with wear behavior was accurately assessed by controlling the stability of other variables. Especially, to account for the combined effects of operational and geological strength variables on load-type variables, the concept of dynamic cutting pressure was introduced, which showed a stronger correlation with wear behavior than that of individual variables alone. Following the principle of dimensional consistency, an integrated wear prediction\u0000model was developed. Validation with data from another tunneling project confirmed the model's accuracy and applicability. This study provides an accurate wear prediction method utilizing readily accessible practical engineering variables during construction, thereby offering a crucial reference for determining the optimal timing for disc cutter replacement and enhancing TBM operational reliability. </p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655284","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

Fully remote assessment of rockfall incidents based on crowdsourced imagery

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-20 DOI: 10.1007/s10064-025-04218-x

Pavlos Asteriou, Dimitrios Zekkos, John Manousakis

{"title":"Fully remote assessment of rockfall incidents based on crowdsourced imagery","authors":"Pavlos Asteriou, Dimitrios Zekkos, John Manousakis","doi":"10.1007/s10064-025-04218-x","DOIUrl":"10.1007/s10064-025-04218-x","url":null,"abstract":"<div><p>This paper presents a fully remote approach for the assessment of rockfall incidents that is based on leveraging data that become available online with the goal to develop three dimensional (3D) models, document in detail the rockfall trajectory immediately following the incident and conduct rockfall analyses fully remotely. Such an approach can reduce the effort necessary to collect data and learn from incidents. The approach is well suited following natural disasters, where a wealth of field performance data may become available online through social media platforms and local news media. The steps to implement this approach involve: datamining the internet for crowdsourced data and particularly Unmanned Aerial Vehicle (UAV) footage of the incident, reconstructing the site morphology in the three-dimensional space by applying the Structure-from-Motion method, extracting insights from the crowdsourced data and conducting three-dimensional rockfall trajectory back-analysis. We demonstrate the approach through two incidents that occurred in Greece, where different amounts of crowdsourced data became available. We evaluate the proposed approach, discuss its limitations and benefits, and provide insights based on these two incidents. This paper shows that in both cases, the proposed approach enabled the rapid extraction of critical, perishable insights such as block detachment positions, block size, and fragment distribution. Also, the proposed approach allowed for the collection of all the input necessary to conduct detailed three-dimensional trajectory analyses. This supports the creation of high-precision inventories of both past and future incidents. Implementing this approach can enhance risk assessment accuracy, and inform mitigation strategies. The proposed approach allows the evaluation of geohazards globally fully remotely and possibly without the need for on-site visits. </p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04218-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655363","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

Assessing river-blocking risks of ancient landslide in mountainous regions: insights from a slow-moving, high-position reactivated ancient landslide in the Southeast Tibetan Plateau 评估山区古滑坡阻断河流的风险：从青藏高原东南部一处缓慢移动、高位再活化的古滑坡中获得的启示

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-20 DOI: 10.1007/s10064-025-04222-1

Xinfu Xing, Changbao Guo, Tanfang Zhu, Peng Xin, Hao Yuan, Yiqiu Yan, Congyan Ran

{"title":"Assessing river-blocking risks of ancient landslide in mountainous regions: insights from a slow-moving, high-position reactivated ancient landslide in the Southeast Tibetan Plateau","authors":"Xinfu Xing, Changbao Guo, Tanfang Zhu, Peng Xin, Hao Yuan, Yiqiu Yan, Congyan Ran","doi":"10.1007/s10064-025-04222-1","DOIUrl":"10.1007/s10064-025-04222-1","url":null,"abstract":"<div><p>The high-position landslide disasters are frequent in Qinghai-Tibet Plateau, which is susceptible to the river blockage induced by the reactivated ancient landslides. However, accurately assessing these characteristics in high-position ancient landslides presents significant challenges due to the limited comprehensive investigations in the mountainous terrains in plateau. The risk assessment process for high-position landslides in plateau mountainous area is proposed in this study. The movement dynamics of the Peilong ancient landslide, located in the southeastern Tibetan Plateau, is analyzed as an example of high-position ancient landslides. The assessment is conducted by the integration of Interferometric Synthetic Aperture Radar (InSAR) with unmanned aerial vehicle (UAV) surveys and extensive field investigations. It explores the rapid runout behavior of landslides under conditions of severe earthquakes and heavy rainfall. The results from the temporal monitoring by InSAR technique indicates that rainfall is the primary trigger of displacement development of Peilong ancient landslide, rather than snowmelt infiltration due to rising temperatures. And landslide displacements occur with a lag behind rainfall. The likelihood of river obstruction is closely related to the trajectory of the landslide debris, with an elevated risk of blockage occurring near river channels. Additionally, terraces with gentle inclines are identified as critical areas susceptible to blockage in V-shaped river channels, while the central and adjacent regions of U-shaped channels are primary zones at risk. These findings enhance our understanding of the movement patterns of slow-moving, high-position ancient landslides, highlighting critical zones for targeted river blockage mitigation in mountainous landscapes.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655364","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

A rainfall model test for investigating the initiation mechanism of the catastrophic loess landslide in Baqiao, Xi’an, China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-19 DOI: 10.1007/s10064-025-04220-3

Zhenjiang Meng, Fan Zhang, Jianbing Peng, Chong Xu, Chenyun Kang, Penghui Ma, Zhongjie Fan, Yanqiu Leng, Chao Li, Yidi Cao

{"title":"A rainfall model test for investigating the initiation mechanism of the catastrophic loess landslide in Baqiao, Xi’an, China","authors":"Zhenjiang Meng, Fan Zhang, Jianbing Peng, Chong Xu, Chenyun Kang, Penghui Ma, Zhongjie Fan, Yanqiu Leng, Chao Li, Yidi Cao","doi":"10.1007/s10064-025-04220-3","DOIUrl":"10.1007/s10064-025-04220-3","url":null,"abstract":"<div><p>Due to the significant decrease in strength of loess after encountering water, loess landslides induced by rainfall are very catastrophic and widely distributed in the Chinese Loess Plateau. On September 17, 2011, a catastrophic loess landslide induced by rainfall occurred in Baqiao district, Xi'an, Shaanxi Province, China, resulting in 32 casualties and bringing great fear to the local residents. This landslide event was characterized by three individual landslides. Field investigations, geological exploration and model experiments were conducted to reveal its initiation and movement mechanisms. The results show that 1) Multiple groups of fissures in the ring-cut adits were found at a location 3 m inward from the slope surface. The minimum opening width of these fissures is 0.5 cm, and the maximum is 4 cm. The fissures develop nearly vertically and have good extensibility and connectivity. 2) the whole process of rainfall-induced landslides can be divided into 3 stages: rainfall infiltration and weight increase; crack expansion and slope deformation; slope collapse and creep deformation. 3) The volumetric water content, pore water pressure and vertical stress variation of the soil in our model all increase first and then decrease. Specifically, these three parameters increase slowly during the pretest and stabilization periods and increase fast shortly before the landslide occurrence. The volumetric water content of the soil on the side containing joints increases faster, verifying that the joints act as preferential channels that accelerate rainwater infiltration. The results of the study provide an important scientific foundation for future research on rainfall-induced loess landslides and their deep-seated mechanisms, and fill the gaps in research related to large-scale physical modeling experiments. </p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645516","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