Bulletin of Engineering Geology and the Environment最新文献_第2页

Experimental investigation and modelling of the tensile strength and soil water characteristics of a low-plastic clay

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-18 DOI: 10.1007/s10064-024-04030-z

Xiayang Zhang, You Gao, Geng Niu, Zancheng Zhu, Jinkun Huang, Ze Li

{"title":"Experimental investigation and modelling of the tensile strength and soil water characteristics of a low-plastic clay","authors":"Xiayang Zhang, You Gao, Geng Niu, Zancheng Zhu, Jinkun Huang, Ze Li","doi":"10.1007/s10064-024-04030-z","DOIUrl":"10.1007/s10064-024-04030-z","url":null,"abstract":"<div><p>The tensile strength and soil water characteristics of unsaturated soils plays a critical role as a fundamental property in various road engineering projects. The purpose of this study is mainly to investigate the tensile strength and soil water characteristics of compacted and desiccated specimens with varying water contents with under the dry density of 1.5, 1.6, and 1.7 g/cm<sup>3</sup> using the filter paper method and Brazilian splitting test. The research findings reveal that during the drying process, as the water content decreases, the overall morphology of the pore size distributions remains largely consistent with a tri-modal distribution, in contrast to the bimodal distribution observed in compacted specimens. Furthermore, desiccated specimens exhibit better water retention behavior compared to compacted specimens. Additionally, compacted specimens reach their peak tensile strength at a critical water content, whereas desiccated specimens progressively increase their tensile strength until stabilizing. In the desiccated specimens, a significant amount of bonding material fills the soil pores, resulting in the formation of a stable bonding force between particles and aggregates. This phenomenon leads to a continuous increase in the tensile strength of the desiccated specimens. The study further establishes a tensile strength model that incorporates the influence of physicochemical forces. The accuracy and reliability of this model were confirmed by comparing its results with experimental data from the test soil in this study, as well as other available resources.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845093","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

Study on the creep characteristics and modified burgers model of silty fine sand under seepage conditions

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-18 DOI: 10.1007/s10064-024-04032-x

Yanchao Liu, Feng Huang, Fang Jin, Dan Zhou, Guihe Wang

{"title":"Study on the creep characteristics and modified burgers model of silty fine sand under seepage conditions","authors":"Yanchao Liu, Feng Huang, Fang Jin, Dan Zhou, Guihe Wang","doi":"10.1007/s10064-024-04032-x","DOIUrl":"10.1007/s10064-024-04032-x","url":null,"abstract":"<div><p>The soil’s creep characteristics significantly impact both the effectiveness of the support system and the enduring stability of the engineering structure. During construction, dewatering is often carried out, which results in seepage within highly permeable soils. To scrutinize the creep behavior of silty fine sand under seepage conditions, triaxial compression tests and triaxial creep tests were conducted on the silty fine sand, subject to three distinct seepage flow rates: 0.5 ml/min, 1.0 ml/min, and 1.5 ml/min. The test results indicate that seepage reduces the maximum stress capacity of the soil and increases its creep deformation. Particularly under relatively high deviatoric stress and seepage flow rates, the specimens exhibit three stages: transient creep, stationary creep, and acceleration creep. Notably, the axial creep deformation rate shows a positive correlation with both seepage flow rates and deviatoric stress. Concurrently influenced by seepage and creep, fine particles within the specimen accumulate in the central and upper regions, whereas the lower section is characterized by larger particles. The progressive increase in pore water pressure, intricately linked to the impeding effect of fine particles on permeation pathways, catalyzes the creep-induced deformation of the specimen. Based on the experimental results, a modified Burgers model has been established. This model takes into account seepage, sliding damage, and particle fragmentation. A comparative analysis, contrasting the modified Burgers model against calculated values derived from the traditional Burgers and Kelvin-Voigt models, underscores the effectiveness of the proposed model. Specifically, the modified Burgers model adeptly captures the transient creep, stationary creep, and acceleration creep stages of silty fine sand, especially under varying seepage flow rates.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845094","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

Experimental investigation of the long-term creep behavior of extremely soft coal rocks and novel nonlinear creep mathematical model with a nonstationary viscous coefficient 极软煤岩长期蠕变行为的实验研究和带有非稳态粘性系数的新型非线性蠕变数学模型

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-17 DOI: 10.1007/s10064-024-04037-6

Xingkai Wang, Jinze Xiang, Wenbing Xie, Caichu Xia, Jianwei Yang, Wansheng Wei

{"title":"Experimental investigation of the long-term creep behavior of extremely soft coal rocks and novel nonlinear creep mathematical model with a nonstationary viscous coefficient","authors":"Xingkai Wang, Jinze Xiang, Wenbing Xie, Caichu Xia, Jianwei Yang, Wansheng Wei","doi":"10.1007/s10064-024-04037-6","DOIUrl":"10.1007/s10064-024-04037-6","url":null,"abstract":"<div><p>Severe rheological failure of extremely soft rocks poses a significant threat to the safety and long-term stability of roadways. Herein, four long-term triaxial creep tests were conducted under low confinements and deviatoric stresses. The results show that greater deviatoric stress leads to more obvious creep deformation, while the confining pressure can delay the occurrence of accelerated creep and restrain the creep rate and lateral deformation. The total axial strain reached 4.03% under 0.6-MPa confinement, and the creep strain of the extremely soft coal rock was much larger than that of hard rocks. Additionally, two important features distinguish extremely soft coal rocks from common rocks, namely, the creep rate did not converge in the steady-state creep stage under each applied stress level and a “gradual” squeezing deformation instability occurred in the accelerated creep stage. Furthermore, the steady-state creep rate increased exponentially with an increase in deviatoric stress and decreased following a power function with confining pressure. Then, a modified Burgers model with a nonstationary viscous coefficient was proposed to reflect the dual and nonlinear influence of confining pressure on steady-state creep rate. Moreover, several principles and suggestions for the long-term stability control of extremely soft rock roadway are discussed. Finally, a novel nonlinear creep constitutive model was established by connecting a nonlinear viscoplastic element considering both creep time and applied stress with the modified Burgers model in series. The findings are essential for creep behavior prediction and stability control in extremely soft rock engineering.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844978","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

Study on mechanical properties and embankment instability of dispersive clay under plane strain conditions in Songnen Plain China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-17 DOI: 10.1007/s10064-024-04035-8

Lixiang Wang, Ying He, Xinjiang Song, Qinghui Lai, Haibo Xu, Dongdong Wang

{"title":"Study on mechanical properties and embankment instability of dispersive clay under plane strain conditions in Songnen Plain China","authors":"Lixiang Wang, Ying He, Xinjiang Song, Qinghui Lai, Haibo Xu, Dongdong Wang","doi":"10.1007/s10064-024-04035-8","DOIUrl":"10.1007/s10064-024-04035-8","url":null,"abstract":"<div><p>Dispersive clay is widely distributed in the Songnen Plain of northeast China, causing serious embankment damage to hydraulic engineering, and the research on the relevant failure mechanism is still incomplete. In this study, based on the real stress path of dispersive clay failure, a mechanical experimental method under plane strain conditions was adopted to investigate the strength properties of dispersive clay. The results showed that under plane strain conditions, the stress-strain curve of dispersive clay exhibited the strain hardening type, distincted from the conventional strain softening type under triaxial vertical conditions, and the strength difference was approximately twice at a consolidation stress of 50 kPa. The stress-strain relationship of the principal stress also showed the strain hardening type, and the relationship between the stress-strain was approximately linear. Under low consolidation stress, the coefficient of the intermediate principal stress reached 0.44, indicated a significant influence of the intermediate principal stress on the strength of the clay. Under low consolidation stress, the failure mode of dispersive clay was characterized by swelling with no obvious spatial shear band, while under high consolidation stress, the failure mode exhibited a shear band located diagonally. Additionally, the strength properties of dispersive clay were weakened by the leaching of chemical ions in the clay, showed different compaction and strength under different consolidation stresses.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844979","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

Experimental investigation of the shear behavior of soft-hard joints under constant normal stress 恒定法向应力下软硬接缝剪切行为的实验研究

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-17 DOI: 10.1007/s10064-024-04039-4

Shengpeng Hao, Ya’nan Liu, Zhenyu Zhang, Wenyu Xu

{"title":"Experimental investigation of the shear behavior of soft-hard joints under constant normal stress","authors":"Shengpeng Hao, Ya’nan Liu, Zhenyu Zhang, Wenyu Xu","doi":"10.1007/s10064-024-04039-4","DOIUrl":"10.1007/s10064-024-04039-4","url":null,"abstract":"<div><p>The shear behavior of soft-hard joints is important in the stability analysis of rock structures. However, available experimental studies on the shear behavior of soft-hard joints are relatively limited. In this study, a series of direct shear tests were conducted to evaluate the shear stress-displacement curves and the dilatancy of soft-hard joints with different joint roughness coefficient <i>JRC</i>, wall strength ratios, and normal stresses. Acoustic emission technique was applied to investigate the mesoscopic damage evolution of soft-hard joints with shear displacement. Results showed that the shear stress-displacement curves of soft-hard joints were divided into elastic, damage, softening, and residual stages. Peak and residual shear strengths increased with <i>JRC</i>, wall strength ratio, and normal stress. The peak shear displacement increased with wall strength ratio and normal stress, while it decreased with <i>JRC</i>. The damage coefficient increased with <i>JRC</i>, wall strength ratio, and normal stress, and the soft wall surface exhibited a higher damage coefficient compared to the hard wall. The damage spots on the soft wall surface progressively enlarged with wall strength ratio and normal stress. The percentage of tensile cracks was typically higher than 50%. The proposed empirical model based on Barton model and Asadollahi model could accurately predicted the entire shear stress-displacement curves of soft-hard joints obtained from direct shear tests. The findings in this study should be beneficial for estimating the shear response of soft-hard joints under constant normal stress.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844977","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

Failure mechanism of toppling in anti-dip layered rock slope: a case study of the Xiangpingshan landslide in southwest China

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-13 DOI: 10.1007/s10064-024-04026-9

Changkui Wang, Leilei Jin, Wenxi Fu, Fei Ye, Rui Qian, Guangchao Lv, Shuang Yao

{"title":"Failure mechanism of toppling in anti-dip layered rock slope: a case study of the Xiangpingshan landslide in southwest China","authors":"Changkui Wang, Leilei Jin, Wenxi Fu, Fei Ye, Rui Qian, Guangchao Lv, Shuang Yao","doi":"10.1007/s10064-024-04026-9","DOIUrl":"10.1007/s10064-024-04026-9","url":null,"abstract":"<div><p>Landslides significantly impact human engineering practices. In the Wenshan section of the Tianbao-Houqiao Expressway in Yunnan, China, three closely spaced deformation zones emerged within the Xiangpingshan slope. Despite multiple rounds of reinforcement measures, including anti-slide piles and slope cutting excavations, one of these zones continued to experience deformation, posing a serious threat to both human life and property and causing frequent expressway closures. This study aims to analyze the surface features, deformation characteristics, and failure mechanisms of these deformation zones through detailed field investigations, InSAR analysis, numerical simulations, and monitoring data. The results show that the Xiangpingshan slope is an ancient landslide, characterized as an anti-dip layered rock slope. Engineering disturbance is the main triggering factor for these deformation zones. Zones I and II exhibit shallow deformation caused by sliding of the overburden. Zone III exhibits deep-seated deformation resulting from excavation disturbances. These disturbances initially triggered overburden sliding, followed by the sliding of the bedrock along fracture zones. A sliding-toppling failure mode is proposed for such slopes, which primarily occurs in anti-dip soft rock slopes. Reducing excavation and providing timely support after excavation, is crucial to prevent bedrock disturbance and the onset of deep-seated deformation. Additionally, this paper uses the Xiangpingshan landslide as a case study to summarize the multi-phase catastrophic process of large-scale toppling slopes, offering valuable insights for similar engineering projects.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810962","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

Unloading-induced acoustic and fracturing behavior of a fault interface at various depths: relevance to faulting-affected coal burst in deep mining

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-11 DOI: 10.1007/s10064-024-03920-6

Han Zhu, Minghe Ju, Anye Cao, Liyuan Yu, Wu Cai, Linming Dou

{"title":"Unloading-induced acoustic and fracturing behavior of a fault interface at various depths: relevance to faulting-affected coal burst in deep mining","authors":"Han Zhu, Minghe Ju, Anye Cao, Liyuan Yu, Wu Cai, Linming Dou","doi":"10.1007/s10064-024-03920-6","DOIUrl":"10.1007/s10064-024-03920-6","url":null,"abstract":"<div><p>To investigate fault activation and slip-induced hazards at different depths in coal mining, this study conducted unloading experiments on inclined sandstone interfaces under confining stresses of 10 MPa, 18 MPa and 30 MPa using a true triaxial loading machine. Seismic signals over fault surface sliding were collected using a multi-channel acoustic emission (AE) system. Statistics on the AE energy and dominant frequency with fault activation were calculated, and seismic localization and fracture type during faulting were derived for different initial confinement conditions. Scanning electron microscopy (SEM) and confocal laser scanning microscope (CLSM) techniques were used to characterize the micro features of fault sliding. Experimental results indicate that the unloading-induced slip instability process of the fault surface under different confining pressures is basically consistent, and the duration of fault surface slip is positively correlated to the initial confining pressure. The AE events are distributed near the fault surface and mainly represent tensile fracture, but shear events significantly increase after fault macroscopic slip. Both the fracture intensity and pore abrasion of the fault interface are higher for a larger confining pressure and the surface is apparently smooth when confining stress reaches 30 MPa. Based on the experimental results, the mechanical behavior of unloading-induced fault sliding correlated to AE signal characteristics and surface fracture separately was discussed. Finally, implications of the findings on the seismic monitoring and early warning of faulting-affected coal burst in deep mining were presented.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-024-03920-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811234","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

Laboratorial studies on the effect of rock microfabric parameters on drill rig vibration

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-10 DOI: 10.1007/s10064-024-04029-6

Ali Bameri, Seyed Hadi Hoseinie, Masoud Cheraghi Seifabad, Sasan Ghorbani

{"title":"Laboratorial studies on the effect of rock microfabric parameters on drill rig vibration","authors":"Ali Bameri, Seyed Hadi Hoseinie, Masoud Cheraghi Seifabad, Sasan Ghorbani","doi":"10.1007/s10064-024-04029-6","DOIUrl":"10.1007/s10064-024-04029-6","url":null,"abstract":"<div><p>Drilling is a crucial operation in mining and construction, and optimizing it can significantly impact costs and operation time. Therefore, it is necessary to determine the parameters affecting the drilling and the correct understanding of these relationships can help to optimize the drilling operation. In the meantime, the relationships between the parameters of the drilling machine and the rock can be considered as a decisive operational condition. One of the effective parameters in drilling is the rock texture, which is measured based on the image analysis of thin sections. Additionally, the vibration caused by drilling can assist in determining the type of rock and its characteristics, guiding further operations. In this study, we utilized a laboratory-scale drilling machine to measure the vibration it caused during drilling and examined its relationship with the microfabric parameters of 10 different rocks. Statistical analysis indicated the highest and lowest correlation coefficient between vibration with aspect ratio and the equivalent diameter, respectively. These relationships can provide a good view of the impact of rock texture parameters on the vibration of the drilling rig on a laboratory scale. Also, by using the 3D surface plot and considering the combination of rock microfabric parameters, the drilling vibration can be predicted with much higher accuracy. This result shows that the drilling vibration is affected by a combination of rock microfabric parameters.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798458","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

Investigation on deformation behavior of unstable rock belt based on multi-source data analysis

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-10 DOI: 10.1007/s10064-024-03991-5

Yufang Zhang, Junyi He, Kun Yuan, Xueyong Xu, Ye Zhou, Haoshan Zhang, Aiguo Xing, Jian Cui

{"title":"Investigation on deformation behavior of unstable rock belt based on multi-source data analysis","authors":"Yufang Zhang, Junyi He, Kun Yuan, Xueyong Xu, Ye Zhou, Haoshan Zhang, Aiguo Xing, Jian Cui","doi":"10.1007/s10064-024-03991-5","DOIUrl":"10.1007/s10064-024-03991-5","url":null,"abstract":"<div><p>Slope failure triggered by collaboration of coal-mining activities, structural plane, karstification and rainfall is very frequently occurred in Guizhou, China. Subsequent four rock topples occurred in Daxian village, Bijie City since October 2022 continuously threatening the safety of the residents and exhibited a high possibility of reoccurring geohazards in the Yiziyan unstable rock belt. Temporal and spatial multi-source data from GNSS, sensors, video footage, aerial image and remote sensing are integrated to reveal the unstable rock belt deformation behavior. Detailed macro- and microscopic data reveal that slope experienced a three-stage deformation process with different displacement rate since devices started to monitor. Based on the comprehensive monitoring data, inverse-velocity method (IVM) was improved with two quantitative indexes: displaced angle and crack width, and it indicated a slope failure event approximately on 23rd June 2023. According to the prediction result, government emergently evacuated all the residents and took effective disaster management. Therefore, fatalities were avoided in the major rock topple event occurred on 20th June 2023 in Yiziyan which served as a highly valuable case of successfully forecast approaching slope failure. The modified IVM provides specific precursor of future potential geohazards in the similar geological condition in Guizhou.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798459","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 case study of the application of wet top-feed vibro replacement stone columns as foundation supports for a fuel tank in a reclamation area

IF 3.7 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2024-12-05 DOI: 10.1007/s10064-024-04027-8

Pitthaya Jamsawang, Dennes T. Bergado, Panich Voottipruex, Francisco Baez, Pornkasem Jongpradist

{"title":"A case study of the application of wet top-feed vibro replacement stone columns as foundation supports for a fuel tank in a reclamation area","authors":"Pitthaya Jamsawang, Dennes T. Bergado, Panich Voottipruex, Francisco Baez, Pornkasem Jongpradist","doi":"10.1007/s10064-024-04027-8","DOIUrl":"10.1007/s10064-024-04027-8","url":null,"abstract":"<div><p>This paper presents a case study in which wet and top feed vibro replacement stone columns are used to support a 20-m-high fuel tank built on loose to medium sand deposits. The design considerations, installations, applications, field tests, correlations, and subsequent three-dimensional finite element analyses are presented. The soil profile of the case study comprised approximately 8 to 12 m thick loose to medium-dense silty sand layers with a high groundwater table. The 1-m-diameter stone columns were installed in a triangular pattern with a spacing of 2.1 m. The improvement depths were 8, 11, and 12 m. After construction was completed, quality assurance of the stone column installation was performed via various field tests. Based on the hydro test results, the improved ground could carry an allowable bearing capacity of 200 kPa transferred from the 20-m-high fuel tank and exhibited a maximum settlement of less than 50 mm, which met the design criteria of this project. Owing to reasonable quality control during stone column installation, the tilt of the tank caused by the nonuniformity of the improved sands was less than 10 mm. The enhanced strength ratio of the surrounding sands was 2 the densification effect. Furthermore, three-dimensional finite element simulations were performed. The results were consistent with the field measurements, verifying the effectiveness of the ground improvement technique. This case study demonstrates the practical application and benefits of vibro-replacement stone columns in enhancing bearing capacity, minimizing settlement, and improving overall foundation stability in challenging geotechnical environments, contributing to future engineering practices for similar projects.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778467","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