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

Compressibility-undrained shear behavior relationship for reconstituted sandy clays 重构砂质粘土的压缩-不排水剪切特性关系

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-17 DOI: 10.1007/s10064-025-04482-x

MengYing Gao, LingLing Zeng, ZhenShun Hong, Zi Ying

{"title":"Compressibility-undrained shear behavior relationship for reconstituted sandy clays","authors":"MengYing Gao, LingLing Zeng, ZhenShun Hong, Zi Ying","doi":"10.1007/s10064-025-04482-x","DOIUrl":"10.1007/s10064-025-04482-x","url":null,"abstract":"<div>The sandy clay consisted of hosted clay and sand particles. Isotropically consolidated undrained triaxial compression shear (ICUTCS) tests were performed on two clays with varying sand fractions (SF = 0–60%) and initial water contents of hosted clays (w0(hosted clay) = 1.2-1.4wL(hosted clay), where wLhosted clay is the liquid limit of hosted clay). The void ratio of hosted clay (ehosted clay) and undrained shear strength (Su*) curve is used to establish the compressibility (ehosted clay -pc΄) and shear strength (Su*- pc΄) relationship for reconstituted sandy clays. pc΄ is the isotropic consolidation stress. SF affects ehosted clay, further influencing Su* of sandy clays. At the same w0(hosted clay) and pc΄, when SF ≤ SFthreshold, Su* of sandy clays is equal to that of reconstituted clays and the sandy clay is sand particles dispersed distribution stage; when SF>SFthreshold, as SF increases, Su* of sandy clays gradually decreases due to the direct contact or clayey bridges between sand particles and the sandy clay is in structural effects of sand particles existing stage. SF, pc΄ and w0(hosted clay) affect Su* of sandy clays by changing ehosted clay. The Su*-e relationship of sandy clays is dependent on SF and wL(hosted clay). The wL(hosted clay) can consider types of hosted clays. An empirical method for predicting Su* in reconstituted sandy clays during different pc΄ is presented. The predicted values are almost identical to the measured data, with errors within ± 10%.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316456","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 the stability of loose soil slope considering the coupling effect of seepage and runoff: theoretical analysis and flume test 考虑渗流与径流耦合效应的松散土质边坡稳定性研究：理论分析与水槽试验

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04531-5

Yang Wang, Yufeng Wei, Fei Ye, Qianfeng Xiao, Guangcao Lv, Wenxi Fu

{"title":"Investigation on the stability of loose soil slope considering the coupling effect of seepage and runoff: theoretical analysis and flume test","authors":"Yang Wang, Yufeng Wei, Fei Ye, Qianfeng Xiao, Guangcao Lv, Wenxi Fu","doi":"10.1007/s10064-025-04531-5","DOIUrl":"10.1007/s10064-025-04531-5","url":null,"abstract":"<div>Precipitation is a critical triggering factor in the phenomenon of slope failures in loose soil, attributable not only to its seepage impact but also to the erosive potential of runoff. In this paper, the shallow failure mechanism of slopes is analyzed through flume tests, and it is found that, under the combined action of soil seepage and surface runoff, loose slopes undergo a shallow traction-type fluidized instability failure. Based on the flume observations, the coupling effect of soil seepage and surface runoff on slope failures is analyzed by establishing a hydro-mechanical coupling model. The Navier-Stokes and Brinkman-extended Darcy equations are employed to describe the runoff along the slope surface and the seepage within the soil, respectively. The flow velocities of seepage within the soil and runoff on the surface are derived by adopting a continuous boundary condition at the liquid-solid interface. A modified slope stability equation is derived by introducing the drag force exerted by runoff, which is affected by rainfall intensity. A sensitivity analysis of key parameters (i.e., rainfall intensity, runoff coefficient, slope angle, cohesion, and internal friction angle) is also discussed. Additionally, the proposed calculation model is validated by the Wachangwan landslide.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316495","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

Evaluation of subsurface geological uncertainty in foundation design using electrical resistivity tomography and geotechnical methods 利用电阻率层析成像和岩土工程方法评价地基设计中的地下地质不确定性

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04525-3

Rungroj Arjwech, Sutatcha Hongsresawat, Sitthiphat Eua-Apiwatch, Hathaichanok Vattanasak

{"title":"Evaluation of subsurface geological uncertainty in foundation design using electrical resistivity tomography and geotechnical methods","authors":"Rungroj Arjwech, Sutatcha Hongsresawat, Sitthiphat Eua-Apiwatch, Hathaichanok Vattanasak","doi":"10.1007/s10064-025-04525-3","DOIUrl":"10.1007/s10064-025-04525-3","url":null,"abstract":"<div>Uncertainty and inadequate subsurface geological data are significant factors contributing to the failure of engineering structures. Conventional site investigations typically rely on drilling multiple boreholes to obtain core samples for geotechnical analysis, including assessments of UCS and RQD. However, in regions like the Khorat Plateau of Northeast Thailand, foundation engineering faces challenges due to the highly variable thickness of hard sandstone beds interbedded with soft, weak mudstone layers that can critically affect bearing capacity and settlement behavior over short distances. This study integrates 2D ERT surveys with traditional borehole investigations to improve subsurface characterization for foundation design. ERT imaging successfully identified three primary subsurface layers: the earthen berm, intact sandstone bedrock, and weathered mudstone bedrock. The high-resolution tomograms correlated well with core log data, accurately delineating subsurface boundaries based on resistivity contrasts verified at borehole positions. While sandstone bedrock samples exhibited good to excellent RQD values, the correlation between RQD and resistivity was scattered due to factors such as elevation differences and moisture content. Nevertheless, ERT proved particularly valuable in detecting mudstone layers that might otherwise remain undetected. The study recommends ensuring a sandstone thickness of at least 5 m, as confirmed by ERT, for safe and reliable shallow foundation design. Furthermore, it highlights the potential of ERT to reduce the number of required boreholes and enhance the reliability of geotechnical assessments. This integrated methodology holds promise for application in similar geological contexts worldwide.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316313","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

Comparison of methods for determining the frost depth 确定霜深方法的比较

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04507-5

Šarūnas Skuodis, Mindaugas Zakarka, Juozas Bielskus, Neringa Dirgėlienė

{"title":"Comparison of methods for determining the frost depth","authors":"Šarūnas Skuodis, Mindaugas Zakarka, Juozas Bielskus, Neringa Dirgėlienė","doi":"10.1007/s10064-025-04507-5","DOIUrl":"10.1007/s10064-025-04507-5","url":null,"abstract":"<div>Over the past two centuries, the depth of ground frost has been steadily decreasing due to climate change. This study evaluates and compares different methodologies for determining frost depths, including analytical, empirical, numerical, and observational approaches, with a focus on widely used calculation methods. The analysis, performed in accordance with Lithuanian, European, and North American standards, reveals significant discrepancies between calculated frost depths and field observations from meteorological stations, particularly in areas affected by snow removal operations. Key influencing factors, such as air temperature variability, snow cover dynamics, and soil thermal properties, are examined to assess their impact on frost penetration. The comparison of different datasets highlights the limitations of existing models and underscores the necessity of updated climate data and advanced modeling techniques for more reliable geotechnical design in Lithuania. When comparing several ground frost depth determination methods under identical climate and soil conditions, differences in accuracy, applicability, and limitations of these methods become evident. The inclusion of up-to-date climate data in the revised Lithuanian standards highlights the growing need to assess and improve frost depth calculation models. This study contributes to that goal by evaluating the accuracy and limitations of widely used methods under uniform conditions.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04507-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316316","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

Safety evaluation and rehabilitation plan of Masjed Soleyman rockfill dam with large post construction deformations 大变形堆石坝安全评价与修复方案

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04502-w

Arman Maddah, Davood Salehi, Ali Fakhimi, Abolfazl Mehinrad

{"title":"Safety evaluation and rehabilitation plan of Masjed Soleyman rockfill dam with large post construction deformations","authors":"Arman Maddah, Davood Salehi, Ali Fakhimi, Abolfazl Mehinrad","doi":"10.1007/s10064-025-04502-w","DOIUrl":"10.1007/s10064-025-04502-w","url":null,"abstract":"<div>Rockfill dams can tolerate deformations, but large post-construction settlements exceeding design limits may pose significant safety risks to these structures. Despite extensive researches on dam analysis and design, studies addressing the combined effects of rockfill creep and persistent high pore pressure in a dam core remain limited, particularly for dams with extreme deformations. This study analyzes 177 m high Masjed Soleyman dam, where the 20-year monitoring has recorded about 6 m crest settlement and 1.8 m downstream shell displacement. The substantial settlement has caused multiple cracks in the dam crest, including a primary crack with a 30 cm aperture. Additionally, two prominent shear zones have developed parallel to the dam axis on the upstream and downstream surfaces. 3D finite element modeling and back analysis were used to evaluate the dam static and dynamic behavior during construction, initial impoundment, and operation stages. The study revealed two primary mechanisms driving the dam exceptional deformations: high excess pore pressure in the core that reduces effective stress, and creep/particle breakage in the rockfill shells that weakens lateral confinement, leading to the core softening and distortion. SEE-level seismic analysis indicated potential crest settlements of 4.15 m, exceeding acceptable safety thresholds for dam operation. The study revealed that 50% pore pressure reduction by controlled core water content, and wet rockfill compaction during construction, could have reduced settlements by 65%. The proposed rehabilitation plan, which includes rebuilding the crest and thickening the downstream shell, may lower future settlements by 30–40%, offering an effective solution for similar dams.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316429","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

Load distribution of rockfall impact onto rock shed through sand cushion 落石冲击通过砂垫对岩棚的荷载分布

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04484-9

Xiaoyu Meng, Qinghui Jiang, Jie Han, Jing Li

{"title":"Load distribution of rockfall impact onto rock shed through sand cushion","authors":"Xiaoyu Meng, Qinghui Jiang, Jie Han, Jing Li","doi":"10.1007/s10064-025-04484-9","DOIUrl":"10.1007/s10064-025-04484-9","url":null,"abstract":"<div>Sand cushion has been widely placed above rock sheds to improve their impact resistance to rockfall. The impact load distribution through a sand cushion is an important consideration for the rock shed design. To evaluate the impact load distribution through the sand cushion, this study performed impact tests and showed that the impact stress increased with the increase of rock mass and impact velocity as well as the decrease of cushion thickness and rock sphericity. This study also conducted a sensitivity analysis, indicating that the main factor influencing the peak impact stress within the sand cushion was the rock sphericity, followed by the cushion thickness, the impact velocity, and the rock mass. Based on the test results, an impact load distribution model was proposed to characterize the peak impact stress and the impact stress distribution through the sand cushion, which was verified for its reliability. Furthermore, the results showed that the stress distribution angle was independent of the rock mass, drop height, and cushion thickness when a spherical rock was used. However, when a rectangular prism rock hit the sand cushion by its minimum contact area, the impact stress distribution angle decreased with the increase of the rock sphericity. Finally, this paper proposed a procedure for designing sand cushions to protect rock sheds against rockfall impact.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316318","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

Extraction of discontinuity and potential rockfalls for high-steep rock mass in the three Gorges reservoir area 三峡库区高陡岩体结构面和潜在岩崩的提取

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04520-8

Haiqing Yang, Anhua Ju, Dan Liang, Lichuan Chen, Jingwei Xiang

{"title":"Extraction of discontinuity and potential rockfalls for high-steep rock mass in the three Gorges reservoir area","authors":"Haiqing Yang, Anhua Ju, Dan Liang, Lichuan Chen, Jingwei Xiang","doi":"10.1007/s10064-025-04520-8","DOIUrl":"10.1007/s10064-025-04520-8","url":null,"abstract":"<div>\u0000 \u0000 Discontinuity features and local geometric characteristics of rock mass are critical in analyzing the evolution and failure mechanisms of potential rockfalls in high and steep hazardous rock masses. Due to the inaccessibility of terrain and the height of these rock masses in the Three Gorges Reservoir area, this paper presents a workflow based on unmanned aerial vehicle (UAV) photogrammetry for the rapid and precise identification of potential rockfalls. This method combines semi-automatic discontinuity recognition technology with kinematic analysis of rock bodies considering local slope directions, allowing for an intuitive and quantitative interpretation of potential rockfall distributions from point cloud data. The results indicate that the Diaozui rock mass in the Three Gorges Reservoir area has four typical structural planes, with J1 and J2 being the most predominant, forming parts of the rock body’s vertical surfaces in different directions. J4 has the lowest proportion but still represents an important set of structural planes, forming vertical faces in two gullies. Moreover, the Diaozui rock body is at risk of failure under all four modes of failure (planar sliding, wedge sliding, flexural toppling, and direct toppling), with planar sliding being the most likely. However, in the overhanging parts of the rock body, the flexural toppling mode occupies a significant proportion. This study proposes a workflow that quantitatively interprets the discontinuities and potential rockfalls in high-steep rock mass, which provides a theoretical basis for the stability monitoring and rockfall mitigation of high-steep hazardous rock mass in the Three Gorges reservoir area.\u0000 </div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316315","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

Rock-socketed pile performance: a T − ({overlinetheta}_p) synergy framework for 3D interface shear prediction 嵌岩桩性能：三维界面剪切预测的T - ({overlinetheta}_p)协同框架

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04500-y

Renyi Chen, Yonggao Yin, Weimin Wang, Min He, Dan Zhang, Banglu Xi

{"title":"Rock-socketed pile performance: a T − ({overlinetheta}_p) synergy framework for 3D interface shear prediction","authors":"Renyi Chen, Yonggao Yin, Weimin Wang, Min He, Dan Zhang, Banglu Xi","doi":"10.1007/s10064-025-04500-y","DOIUrl":"10.1007/s10064-025-04500-y","url":null,"abstract":"<div>The present research employs a 3D scanning methodology to evaluate the roughness of rock joints and proposes the concepts of the embedment ratio (T) and 3D average inclination angle (({overlinetheta}_p)) to characterize the 3D roughness coefficient (JRC3D) of joints. Direct shear tests on joints with varying JRC3D revealed: (1) a positive correlation between T or ({overlinetheta}_p) and concrete-rock interface (CRI) shear strength; (2) increased JRC3D enlarges damage zones but reduces peak shear displacement (sr); (3) an exponential JRC3D − peak dilation angle (ip) relationship implying asperity degradation. Leveraging these findings, established the NCRSM constitutive model via multivariate regression. Validation against experimental data and alternative models confirmed NCRSM’s accuracy in capturing CRI shear mechanisms, particularly strain-softening stage. Implemented in rock-socketed pile analysis, NCRSM reformulated shaft resistance transfer functions, achieved close agreement with FEM simulations. Parametric analysis demonstrated that ({overlinetheta}_p) contributes more significantly than T to RSPs performance. When T ≥ 40%, its contribution to enhanced the load-bearing capacity of RSPs diminishes significantly. In contrast, the contribution of ({overlinetheta}_p) remains unaffected and does not diminish despite its persistent increase. T − ({overlinetheta}_p) synergy framework enables optimized RSPs design in complex rock formations.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316314","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 influence of dry-wet cycles and salinity on the permeability characteristics of saline loess 干湿循环和盐度对含盐黄土渗透特性影响的研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-16 DOI: 10.1007/s10064-025-04461-2

Jun Zhen, Xiu-juan Yang, Hao-ran Wang, Heng-hui Fan, Ming-qiang Meng

{"title":"Study on the influence of dry-wet cycles and salinity on the permeability characteristics of saline loess","authors":"Jun Zhen, Xiu-juan Yang, Hao-ran Wang, Heng-hui Fan, Ming-qiang Meng","doi":"10.1007/s10064-025-04461-2","DOIUrl":"10.1007/s10064-025-04461-2","url":null,"abstract":"<div>Soil salinization is a significant challenge to land use in NW China, and the continuous dry and wet cycles in the region also have long-term effects on the engineering properties of saline soils. In this study, dry and wet cycles tests were conducted on artificially prepared salinized loess to analyze the hydraulic properties of saline soils under alternating dry and wet conditions. The saturated infiltration coefficient and soil–water characteristic curves of the soil specimens were measured after dry and wet cycling. Numerical simulation models were employed to quantitatively analyze the effects of dry–wet cycles and salt content on soil permeability properties. The study found that salt content had a significant effect on the saturated permeability coefficient of saline loess, and that the permeability coefficient of the soil decreased and eventually stabilized with an increase in the number of dry and wet cycles. The experimental results were used to establish a saturated permeability coefficient model and a soil–water characteristic curve fitting model, which take into account the number of dry and wet cycles and soil salt content effects, and the models were then used to predict and analyze the unsaturated permeability coefficient of the soil.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316317","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

Mechanisms of unsaturated subgrade moisture migration with compactness Spatiotemporal variability: a novel soil hydraulic characteristics model and multi-field coupled seepage framework 具有密实度时空变异性的非饱和路基水分迁移机制：一种新的土壤水力特性模型和多场耦合渗流框架

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-15 DOI: 10.1007/s10064-025-04492-9

Huiren Hu, Chenchen Li, Junhui Zhang, Junhui Peng, Sisi Chen, Houcheng Zhu

{"title":"Mechanisms of unsaturated subgrade moisture migration with compactness Spatiotemporal variability: a novel soil hydraulic characteristics model and multi-field coupled seepage framework","authors":"Huiren Hu, Chenchen Li, Junhui Zhang, Junhui Peng, Sisi Chen, Houcheng Zhu","doi":"10.1007/s10064-025-04492-9","DOIUrl":"10.1007/s10064-025-04492-9","url":null,"abstract":"<div>The subgrade compactness often exhibits decay after initial construction and significant variability. These characteristics of compactness directly impact the hydraulic characteristics of the subgrade soil, which in turn affect the evolution and equilibrium of the subgrade humidity field. This study aimed to develop a moisture migration model considering the influence of compactness variability and decay, and reveal its influence on the evolution and equilibrium laws of the subgrade humidity field. First, a new hydraulic characteristics model was developed incorporating the compactness and overlying stress, and exhibited good predictive performance (R2 = 0.93). Then, a spatiotemporal evolution equation for compactness was constructed considering the randomness and decay. Based on a finite element model, an efficient calculation method for subgrade moisture evolution was also developed considering the coupled effects of hydro-mechanical-compactness. The results indicated that the developed subgrade moisture calculation method thoroughly accounted for the compactness characteristics. Matric suction experienced a sharp decrease, with moisture content increasing from its initial state within approximately 4 years, eventually reaching a relative equilibrium. When the compactness decays by 5%, the matric suction and moisture content in the equilibrium state increased by about 5%. With the inclusion of the compactness randomness, the matric suction distribution displayed zigzag fluctuations. The equilibrium moisture content at each position followed a normal distribution with a high level of fitting accuracy (R2 = 0.99). These findings can provide a theoretical basis for the probabilistic design of road structures, ensuring the long-term stability and performance of road infrastructure.</div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145315698","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