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

Field, experimental and numerical study for landslide mitigation in Himachal Pradesh, India: Case study

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-12 DOI: 10.1007/s10064-025-04207-0

Ayush Kumar Tiwari, Eedy Sana, Ashutosh Kumar, Kala Venkata Uday

{"title":"Field, experimental and numerical study for landslide mitigation in Himachal Pradesh, India: Case study","authors":"Ayush Kumar Tiwari, Eedy Sana, Ashutosh Kumar, Kala Venkata Uday","doi":"10.1007/s10064-025-04207-0","DOIUrl":"10.1007/s10064-025-04207-0","url":null,"abstract":"<div><p>Landslides frequently disrupt road networks in the mountainous region of Himachal Pradesh, India causing traffic delays and disconnecting the supplies of essential commodities within the affected regions. Therefore, it is essential to establish a comprehensive investigation mechanism to identify the triggering factors and develop effective mitigation strategies through well-defined design protocols. This paper presents a detailed investigation on a shallow landslide that destroyed newly built bridge and blocked rural road connectivity of 14 villages to Mandi town of Himachal Pradesh, India on 14th August 2020. We analyzed geophysical, geotechnical, geological and hydrological data to better understand the characteristics of the landslide. This provided the basis of suggesting suitable mitigation measures based on two-dimensional finite element-based numerical modelling. The results obtained revealed that the anthropogenic activity was the primary cause of the landslide with excessive rainfall acted as the triggering factor. Weak layers and discontinuities in the slope materials and soil conditions increased the landslide risk. The results of numerical modelling suggested that the slope had low safety factors under saturated conditions indicating the importance of water table location in changing the effective stress regime within the soil. Mitigation measures were proposed that included grouted soil nails indicating the factor of safety more than 1 for all the possible loading scenario. The findings of this study provide a comprehensive understanding of landslide characteristics and necessary procedure for mitigating slopes in the Himalayan region. The study can assist in developing effective strategies to reduce the occurrence and impact of landslides in the region.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602416","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 and zoning of seismic landslide hazards in Sichuan, China, using a SCM-ANFIS model under different ground motion

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-11 DOI: 10.1007/s10064-025-04172-8

Jie Wang, Chong Xu, Zhuojuan Xie, Yu Li, Lifang Zhang, Yuejun Lv

{"title":"Assessment and zoning of seismic landslide hazards in Sichuan, China, using a SCM-ANFIS model under different ground motion","authors":"Jie Wang, Chong Xu, Zhuojuan Xie, Yu Li, Lifang Zhang, Yuejun Lv","doi":"10.1007/s10064-025-04172-8","DOIUrl":"10.1007/s10064-025-04172-8","url":null,"abstract":"<div><p>The distribution and intensity of seismic landslides are directly influenced by factors such as earthquake magnitude, epicentral distance, and focal depth; therefore, evaluating seismic landslide hazards should be based on a comprehensive assessment of seismic hazards. In this study, we focused on Sichuan Province, an area characterized by a high susceptibility to significant seismic activity and a propensity for landslides triggered by earthquakes. Initially, we used the potential source model, activity parameters, ground motion prediction equations, and calculation methodologies outlined in the current GB18306-2015, “Seismic Ground Motion Parameter Zonation Map of China” to determine the distribution of peak ground acceleration (PGA) for basic ground motion, rare ground motion and extremely rare ground motion (with a 50-year exceedance probability of 10%, 2% and 0.5%) in Sichuan Province. We then applied a hybrid machine learning model that combines high predictability and tractability, known as the Subtractive Clustering Method-based Adaptive Neural Network Fuzzy Inference System (SCM-ANFIS). The model used earthquake landslide databases from Wenchuan, Lushan, Jiuzhaigou, and Luding, along with 12 relevant factors, including topography and seismic geology. We established a coseismic landslide hazard assessment framework and evaluated seismic landslide probabilities under three levels of ground shaking in Sichuan Province, resulting in the creation of a hazard zoning map. Finally, we assessed the sampling methodology, adaptability, and limitations of the model while also exploring its potential applications. This research can significantly improve disaster prevention and management and inform infrastructure development in Sichuan Province. Future efforts will focus on enhancing data breadth and precision.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594779","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

Fracturing evolution of red sandstone: insights from three-point bending experiment and numerical simulation considering material inhomogeneity and internal discontinuities

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-11 DOI: 10.1007/s10064-025-04204-3

Xiangxin Liu, Bin Gong, Zhengzhao Liang, Zhengnan Zhang, Xun You

{"title":"Fracturing evolution of red sandstone: insights from three-point bending experiment and numerical simulation considering material inhomogeneity and internal discontinuities","authors":"Xiangxin Liu, Bin Gong, Zhengzhao Liang, Zhengnan Zhang, Xun You","doi":"10.1007/s10064-025-04204-3","DOIUrl":"10.1007/s10064-025-04204-3","url":null,"abstract":"<div><p>To reveal the various propagation paths of micro-cracks under the continuous process of stress buildup, stress shadow, and stress transfer, three-point bending experiments and numerical simulations were carried out by considering material inhomogeneity and internal discontinuities. The characteristics of red sandstone fracturing evolution were analyzed from the aspects of acoustic emission (AE) energy index, infrared radiation (IR) changes, fracture surface roughness, stress fields and so on. The test results indicate that four stages are divided in the gradual process of energy release of red sandstone fracturing under three-point bending test, the rough fracture surfaces of crack were extremely small, tensile crack makes the largest proportion. IR and AE perform some significant precursor information of rock fracturing, <i>e.g.</i>, a large amount of high-temperature debris scattered in infrared thermography, the maximum value of AE accumulative energy and the concentration effect of AE events location. Different tensile stress level has different features, macroscopic fracture morphology happens in a low level, and micro-cracks appears in the weakness of crystal surfaces in a high level. It needs to be emphasized that five different modes, pass through, crack-tip blunting, extended-back, crack-forking and passing round, were concluded in terms of the repeated process of stress buildup, stress shadow & stress transfer. These achievements contribute to the better understanding of the failure mechanisms of red sandstone.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04204-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583503","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

Effect of hydroxypropyl methylcellulose (HPMC) modified microbial induced carbonate precipitation on strength and water stability of loess

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-11 DOI: 10.1007/s10064-025-04200-7

Xingyu Wang, Hong Sun

{"title":"Effect of hydroxypropyl methylcellulose (HPMC) modified microbial induced carbonate precipitation on strength and water stability of loess","authors":"Xingyu Wang, Hong Sun","doi":"10.1007/s10064-025-04200-7","DOIUrl":"10.1007/s10064-025-04200-7","url":null,"abstract":"<div><p>Loess exhibits high sensitivity to water, rendering it susceptible to strength loss and structural destruction under hydraulic effects of rainfall, irrigation and groundwater. As an emerging soil improvement technology, microbial induced carbonate precipitation (MICP) stands out for its cost-effectiveness, efficiency, and environmental sustainability. In this study, hydroxypropyl methylcellulose (HPMC) was innovatively introduced into the MICP process to improve the strength and water stability of loess, and a set of unconfined compressive strength (UCS), direct shear, laser particle size analysis, X-ray diffraction (XRD) and scanning electron microscopy (SEM) tests were conducted. The results show that HPMC-modified MICP is able to generate a novel structural matrix combining organic and inorganic elements, significantly enhancing the strength, stiffness, and ductility of loess. HPMC protects loess from water erosion by forming viscous membranes on the surfaces of soil particles and calcium carbonate crystals. Increasing HPMC content can augment membrane viscosity, which is conducive to stabilizing the loess structure, but it has the negative effect of reducing inter-particle friction through increasing membrane thickness. As the HPMC content increased to 0.6%, the strength loss of loess under high water content decreased. These findings are expected to provide critical support for the engineering application of HPMC-modified MICP in loess improvement.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583502","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

Application of a geomorphic restoration method for landslide susceptibility mapping along the rapidly uplifting section of the upper Jinsha river, South-Western China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-11 DOI: 10.1007/s10064-025-04213-2

Sun Xiaohui, Liu Guoqing, Zhao Tong, Tang Li, Han Xudong, Peng Wei

{"title":"Application of a geomorphic restoration method for landslide susceptibility mapping along the rapidly uplifting section of the upper Jinsha river, South-Western China","authors":"Sun Xiaohui, Liu Guoqing, Zhao Tong, Tang Li, Han Xudong, Peng Wei","doi":"10.1007/s10064-025-04213-2","DOIUrl":"10.1007/s10064-025-04213-2","url":null,"abstract":"<div><p>The upper reaches of the Jinsha River are located in the area of rapid uplift of the Tibetan Plateau, which has strong geological structure activities, huge relief of terrain, complex climate characteristics and frequent landslides. Therefore, the susceptibility mapping of landslide disaster in the upper reaches of Jinsha River is of great practical significance to ensure the safety of local people’s property and the safe development of hydraulic resources. However, the landslides in the study area are mainly large to giant landslides, which have a great effect on the change of the original geomorphic features after the occurrence of landslides. The landslide susceptibility mapping based on the geomorphic features after the occurrence of landslides will inevitably reduce the reliability of the evaluation results. In order to deal with landslide disaster more effectively, this study proposed a landslide susceptibility mapping method based on geomorphic restoration. Firstly, high-resolution remote sensing images and field investigation are used to obtain geomorphic feature data, and the damaged geomorphic features are restored and reconstructed. Then, the influence factor system of landslide susceptibility mapping, which includes 14 influencing factors such as lithology, is established, and the landslide susceptibility model is established by using support vector machine (SVM) model. The results show that the classification of slope units based on geomorphic recovery method is more reasonable, and the landslide susceptibility model has higher prediction accuracy. In conclusion, geomorphic restoration plays a key role in accurately mapping landslide susceptibility, and can provide valuable reference for regional disaster prevention and mitigation.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583597","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

Adaptive threshold multimodal fusion for rock prediction in complex geological environments while drilling

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-10 DOI: 10.1007/s10064-025-04152-y

Jun Bai, Sheng Wang, Qiang Xu, Kun Lai, Shiyi Xu, Jie Zhang, Yuanzhen Ju, Ziwen He

{"title":"Adaptive threshold multimodal fusion for rock prediction in complex geological environments while drilling","authors":"Jun Bai, Sheng Wang, Qiang Xu, Kun Lai, Shiyi Xu, Jie Zhang, Yuanzhen Ju, Ziwen He","doi":"10.1007/s10064-025-04152-y","DOIUrl":"10.1007/s10064-025-04152-y","url":null,"abstract":"<p>This paper presents an intelligent prediction method for rock mass classification based on multimodal drilling parameter fusion. The method is specifically applied to coal-bearing sandstone-mudstone formations, which are significantly influenced by tectonic activity and exhibit complex drilling data variations. We propose a novel decision level fusion approach-Adaptive Threshold Reclassification Decision-Level Fusion (ATRDF), which integrates the distinct physical characteristics of various drilling signals into a confidence-based decision-making process. By leveraging key drilling parameters, such as rotational speed (RPM), rate of penetration (ROP), Torque, weight on bit (WOB), and Vibration signals, the ATRDF method constructs a multimodal fusion model. This model uses key drilling parameters as features and rock mass classification as the target label. Experimental results demonstrate that the proposed method significantly enhances prediction accuracy, achieving an 89% classification accuracy under three complex geological conditions. Furthermore, we employ interpretable AI tools including SHAP and Grad-CAM to elucidate the decision-making process based on one-dimensional and two-dimensional signal features. This paper also investigates the optimization of confidence thresholds and decision logic within the ATRDF framework, providing valuable insights into its fusion process and underlying mechanisms.</p>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04152-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580978","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

Three-dimensional landslide surface deformation retrieved by SISTEM method: a case study at Qingjiang river in Changyang County, China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-10 DOI: 10.1007/s10064-025-04202-5

Yigui Peng, Bin Zeng, Jie Dou, Jingjing Yuan, Dong Ai, Huiyuan Xu, Wei Huang

{"title":"Three-dimensional landslide surface deformation retrieved by SISTEM method: a case study at Qingjiang river in Changyang County, China","authors":"Yigui Peng, Bin Zeng, Jie Dou, Jingjing Yuan, Dong Ai, Huiyuan Xu, Wei Huang","doi":"10.1007/s10064-025-04202-5","DOIUrl":"10.1007/s10064-025-04202-5","url":null,"abstract":"<div><p>Current methods for obtaining surface deformation of landslides are mostly time-consuming, costly, and can only capture the motions of sparse points. By combining InSAR data and high-precision three-dimensional GNSS data, the three-dimensional deformation field can be obtained. This study introduces the Simultaneous and Integrated Strain Tensor Estimation from geodetic and satellite deformation Measurements (SISTEM) method into the retrieval process of landslide. This method can be very useful but has rarely been applied to the characterization of landslide kinematics. The results can be used in order to recognize the eventual presence of zones having different kinematics, so we apply SISTEM for the first time to detect 3D deformation on a reservoir slope in Yichang Province, China. The output of InSAR after calculating the atmospheric contribution by external data from the ERA-5 global meteorological model was integrated with local GNSS data into the SISTEM framework to decompose the measurements into a 3-dimensional velocity field. Finally, the kinematic characteristics of the studied landslide surfaces were determined. The middle region exhibits the highest deformation rate along the slope with the maximum horizontal deformation rate of 10 mm/a, primarily showing uplift with vertical deformation rates of 3 mm/a. In contrast, the rear of the slope experiences mainly downward movement, with a maximum vertical deformation rate of -15 mm/a. The proposed method provides a convenient and rapid way to obtain spatially continuous surface movement characteristics of landslides, offering a more direct and reliable scientific reference for landslide disaster warning and instability risk assessment.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583339","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 patterns and influencing factors of debris flows in the middle Yarlung Zangbo River on the Tibetan Plateau

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-10 DOI: 10.1007/s10064-025-04203-4

Guisheng Hu, Xiangzhen Xia, Shufeng Tian, Zhiquan Yang

{"title":"Spatial patterns and influencing factors of debris flows in the middle Yarlung Zangbo River on the Tibetan Plateau","authors":"Guisheng Hu, Xiangzhen Xia, Shufeng Tian, Zhiquan Yang","doi":"10.1007/s10064-025-04203-4","DOIUrl":"10.1007/s10064-025-04203-4","url":null,"abstract":"<p>Currently, studies concerning geological disasters in the Yarlung Zangbo River Basin on the Tibetan Plateau predominantly focus on the Grand Bend downstream of the river. However, research about the spatial patterns and influencing factors of debris flow disasters in the middle reaches remains relatively unclear. Based on remote sensing interpretation, field investigation, and the frequency ratio method, the characteristics of debris flows in the middle Yarlung Zangbo River were analyzed, and the control effects of six factors, e.g. topography, geology, and rainfall on the development patterns of debris flow gully were studied. Research has uncovered the main findings below: 1) the 181 debris flows within the region can be classified into three types according to the water source conditions, each of which exhibits predominantly low-frequency, dilute, and giant-scale occurrences. 2) for the endogenic and exogenic dynamics, lithology has the strongest control effect on debris flows; in terms of topography and vegetation, NDVI (Normalized Differential Vegetation Index) has the strongest control effect on debris flows. 3) Finally, we identified the section from the Naidong District of Shannan City to Nang County of Linzhi City as the area susceptible to debris flow.</p>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04203-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580979","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

Three-dimensional stability analysis and groundwater table estimation of a retrogressive shallow soil landslide: A case study of the Zhongzhai landslide in Gansu Province, China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-08 DOI: 10.1007/s10064-025-04160-y

Shiyao Jia, Qiang Xu, Wanlin Chen, Dalei Peng, Pinliang Li, Haoxing Zhao, Haoyu Li, Xiaoling Song, Hailong Chen

{"title":"Three-dimensional stability analysis and groundwater table estimation of a retrogressive shallow soil landslide: A case study of the Zhongzhai landslide in Gansu Province, China","authors":"Shiyao Jia, Qiang Xu, Wanlin Chen, Dalei Peng, Pinliang Li, Haoxing Zhao, Haoyu Li, Xiaoling Song, Hailong Chen","doi":"10.1007/s10064-025-04160-y","DOIUrl":"10.1007/s10064-025-04160-y","url":null,"abstract":"<div><p>Earthquakes, extreme rainfall, and other conditions can trigger a considerable number of shallow landslides, posing significant safety hazards. Due to the lack of obvious warning signs before sliding, such landslides are not apparent. Traditional remote sensing images and conventional aerial survey data cannot effectively and accurately reflect deformation-related warning signs of sliding. Thus, investigating the subsurface structural characteristics of slopes has become crucial for studying retrogressive shallow soil landslides. This paper takes the Zhongzhai landslide in Niangniangba town, Qinzhou District, Tianshui city, Gansu Province, China, as the research object. Electrical resistivity profiles of the landslide area were obtained by electrical resistivity tomography (ERT), using in situ light dynamic penetration tests and core drilling to confirm the relationship between resistivity and formation lithology to realize the fusion of multisource data. A three-dimensional model of electrical resistivity was constructed to characterize the stratigraphic structure. Combined with unmanned aerial vehicle (UAV) photogrammetry and on-site investigation to obtain terrain features, a three-dimensional geological model of the Zhongzhai landslide was constructed. The development process and genesis mechanism of landslides at the loess–bedrock interface were explored via numerical simulation. The results demonstrate how the stratigraphic structure and water table influence the development of retrogressive shallow soil landslides. This article can provide a reference for the stability evaluation and prediction of retrogressive shallow soil landslides.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571063","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

Comparative study of shear performance of fully-grouted and energy-absorbing bolts under varying normal stress during cyclic shear tests

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-03-08 DOI: 10.1007/s10064-025-04190-6

Hanfang Zheng, Yujing Jiang, Sunhao Zhang, Xuezhen Wu, Hongbin Chen

{"title":"Comparative study of shear performance of fully-grouted and energy-absorbing bolts under varying normal stress during cyclic shear tests","authors":"Hanfang Zheng, Yujing Jiang, Sunhao Zhang, Xuezhen Wu, Hongbin Chen","doi":"10.1007/s10064-025-04190-6","DOIUrl":"10.1007/s10064-025-04190-6","url":null,"abstract":"<div><p>Jointed rock masses are often subjected to complex cyclic shear loads, which may originate from factors such as earthquakes, mining activities, or traffic. Rock bolts are widely used to enhance the stability of jointed rock masses, and the mechanical behavior and failure characteristics of different types of rock bolts under shear conditions can significantly impact the shear resistance and overall stability of the rock structure. This study analyzed the cyclic shear performance of two types of rock bolts under varying normal stress conditions. The results showed that an increase in normal stress significantly enhanced the peak shear stress and shear resistance of the specimens by compacting the contact interface and increasing friction. However, at higher normal stresses, the contact interface between the rock bolt and the rock mass experienced greater stress concentration, which could lead to early bolt failure. Although fully-grouted rock bolts exhibited strong mechanical interlock and high initial shear strength, they were more prone to brittle fracture due to localized stress concentration, increasing the risk of instability. In contrast, energy-absorbing rock bolts, through mechanisms of plastic deformation and energy absorption, effectively alleviated shear stress concentration and demonstrated better toughness and ductility. As normal stress increased, energy-absorbing rock bolts, with enhanced friction and a larger range of shear displacement, absorbed energy more effectively, resulting in a significant increase in shear energy-far surpassing that of fully grouted bolts, which relied primarily on mechanical interlock. Additionally, with repeated loading cycles, the shear stiffness of energy-absorbing rock bolts showed more gradual and stable degradation compared to fully grouted bolts.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571065","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