Bulletin of Engineering Geology and the Environment最新文献_第7页

Drying effect on the microstructure, water retention and stiffness of compacted salinised loess 干燥对盐渍化黄土压实后微观结构、保水性和刚度的影响

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-22 DOI: 10.1007/s10064-025-04444-3

Bobo Jia, Yujun Cui, Wenwu Chen, Haoxin Chen

{"title":"Drying effect on the microstructure, water retention and stiffness of compacted salinised loess","authors":"Bobo Jia, Yujun Cui, Wenwu Chen, Haoxin Chen","doi":"10.1007/s10064-025-04444-3","DOIUrl":"10.1007/s10064-025-04444-3","url":null,"abstract":"<div><p>Salt-induced deterioration is a major issue for earthen structures on the Chinese Loess Plateau. This study investigated the soil-water retention curve (SWRC) of loess with 2% Na<sub>2</sub>SO<sub>4</sub> (C0S2) or NaCl (C2S0) using the contact filter paper method and a chilled-mirror dew-point hygrometer (WP4C). Mercury intrusion porosimetry (MIP) was used to examine pore size distribution (PSD) evolution during drying, while the small-strain shear modulus (<i>G</i><sub>max</sub>) was measured via bender element tests. The results showed that salt-free loess and Na<sub>2</sub>SO<sub>4</sub>-amended loess followed a “bimodal-trimodal-bimodal” PSD evolution during drying, whereas NaCl-amended loess maintained a consistent bimodal pattern. Before crystallisation, Na<sub>2</sub>SO<sub>4</sub> reduced micro- and meso-pores while expanding macro-pores, altering the pore structure. In contrast, NaCl maintained a more uniform pore size distribution, preserving the soil microstructure. NaCl also generated higher osmotic suction than Na<sub>2</sub>SO<sub>4</sub>, and the difference between both increased as Na<sub>2</sub>SO<sub>4</sub> crystallised earlier. However, the influence of osmotic suction weakened as drying progressed. Before crystallisation, matric suction enhanced interparticle attraction, increasing <i>G</i><sub>max</sub>, while osmotic suction provided additional tensile forces. As salts crystallised, osmotic suction declined, and pore filling stabilised meso-pore structures. In the final drying stage, osmotic suction became negligible, matric suction dominated, and Na<sub>2</sub>SO<sub>4</sub> crystallisation expansion in C0S2 disrupted particle arrangements, potentially reducing <i>G</i><sub>max</sub>.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888123","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

Long-Term effects of climate warming on thermal-hydraulic-carbon-mechanical processes in permafrost slopes of the Qinghai-Tibet plateau

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-21 DOI: 10.1007/s10064-025-04418-5

Haotian Wei, Fu Cao, Enlong Liu

{"title":"Long-Term effects of climate warming on thermal-hydraulic-carbon-mechanical processes in permafrost slopes of the Qinghai-Tibet plateau","authors":"Haotian Wei, Fu Cao, Enlong Liu","doi":"10.1007/s10064-025-04418-5","DOIUrl":"10.1007/s10064-025-04418-5","url":null,"abstract":"<div><p>Climate warming has caused permafrost degradation. Rising temperatures have triggered frequent permafrost slope hazards, exposing deep soil organic carbon to decomposition, thereby impacting the carbon cycling process. The interactions between water-heat migration, organic carbon decomposition, CO<sub>2</sub> transport, and slope deformation create a complex, multi-physical field coupling problem. This paper develops a thermal-hydraulic-carbon-mechanical coupling model to study the long-term effects of warming. The conclusions are as follows: (1) Rising temperatures warm permafrost slopes, thickening the active layer and reducing ice content. Deep soils are particularly sensitive to temperature changes, causing areas with high ice content to shift from continuous layers to isolated, island-like distributions. (2) Temperature increases accelerate soil organic matter decomposition, raising CO<sub>2</sub> concentrations. Seepage reduces gas diffusion at the slope base, resulting in CO<sub>2</sub> accumulation. (3) As temperatures increase, soil carbon flux rises. Temperature gradients cause deeper soils to have lower carbon flux than shallow soils, with vertical flux exceeds horizontal flux. Additionally, higher water content at the slope base results in a lower carbon flux. (4) Changes in thermal and moisture conditions affect soil mechanics. Creep causes subsidence at the slope top and uplift at the base, with horizontal displacement peaking at mid-slope.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880943","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 reactivation mechanism and weak substrate effect of bottom-saturated reservoir old landslides– based on a small-scale model 饱和底库老滑坡的再活化机制及弱基质效应研究——基于小尺度模型

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-18 DOI: 10.1007/s10064-025-04439-0

Lijuan Sun, Yihan Zhao, Yiping Sun, Huzhu Zhang

{"title":"Study on the reactivation mechanism and weak substrate effect of bottom-saturated reservoir old landslides– based on a small-scale model","authors":"Lijuan Sun, Yihan Zhao, Yiping Sun, Huzhu Zhang","doi":"10.1007/s10064-025-04439-0","DOIUrl":"10.1007/s10064-025-04439-0","url":null,"abstract":"<div><p>The disaster of reservoir landslides caused by high groundwater levels has attracted much attention. Among them, old reservoir landslides with saturated slope bottoms are more prone to instability and re-sliding. Using the model test method, an independent seepage device was designed to simulate the whole process in bottom-saturated sandy clay old landslides. In the test, various monitoring methods such as deformation marker points, particle image velocimetry (PIV), and various test sensors were used to analyze the characteristics of instability and failure. The test results indicate that the high groundwater level causes the softening of the bottom clay layer to form a sliding surface, and the plastic flow of the saturated soil layer forms a weak substrate effect, resulting in more staggered cracks in the upper part of the slope, forming a multi-stage sliding surface, sliding section, and sliding mass. Three main failure zones were observed in the main body of the model, a graded sliding zone, a traction zone, and a mudflow zone at the leading edge. Its deformation characteristics mainly include multiple failure modes, such as mudflow failure at the leading edge, graded block traction slip, and local collapse failure. The failure mode is as follows: bottom water level rising, slope bottom saturation, tension crack forming at the trailing edge, local traction creep, water level further rising, graded traction slipping, multistage sliding masses instability, and mudflow zone forming. The research findings can provide insights for the model test research and failure mechanism analysis of old landslides on reservoir banks.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861557","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

Dynamic response characteristics of coal and rock with different stress states under seismic wave action 不同应力状态煤岩在地震波作用下的动力响应特征

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-18 DOI: 10.1007/s10064-025-04434-5

Feng Shen, Shengquan He, Dazhao Song, Chao Zhou, Xueqiu He, Anliang Lu, Osama Baig, Fanxiang Zhao

{"title":"Dynamic response characteristics of coal and rock with different stress states under seismic wave action","authors":"Feng Shen, Shengquan He, Dazhao Song, Chao Zhou, Xueqiu He, Anliang Lu, Osama Baig, Fanxiang Zhao","doi":"10.1007/s10064-025-04434-5","DOIUrl":"10.1007/s10064-025-04434-5","url":null,"abstract":"<div><p>The study investigates the stress, energy and deformation response characteristics of the surrounding rock under different stress condition with superimposed dynamic and static loads. It found that with the increase of mountain height, high energy microseismic events begin to rise gradually. The number of microseismic events exhibit initial increase followed by a decrease, reaching a peak in the region where the stress change rate (<i>Cr</i>) is at its highest. The irreversible deformation and stress release of surrounding rock mainly occurred in the mixed loading stage of P- and S-waves. After the excitation of seismic wave, two sides of surrounding rock with a wide range of stress concentration zone experienced significant stress drop. With the increase of stress under same <i>Cr</i>, the degree of the peak particle velocity (PPV) and energy accumulation in the surrounding rock gradually rises, the amount of stress drop and deformation gradually decreases, while the degree of decompression gradually reduces. Under the same stress condition, the surrounding rock in high <i>Cr</i> region has response characteristics of small PPV and deformation, minimal stress drop and weak energy distribution. The distribution of stress, energy and displacement was asymmetrical, aligning with the observed characteristics of the on-site rockburst manifestation.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861566","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

Stress evolution in stope roof with roof-contacted filling by expansive backfill under lateral confinement release during second-step mining 二步开采膨胀充填接触顶板侧向约束释放条件下顶板应力演化

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-18 DOI: 10.1007/s10064-025-04417-6

Nan Yao, Wenchao Guan, Yang Liu, Yicheng Ye, Junbo Meng, Zheng Wan, Bohai Tan

{"title":"Stress evolution in stope roof with roof-contacted filling by expansive backfill under lateral confinement release during second-step mining","authors":"Nan Yao, Wenchao Guan, Yang Liu, Yicheng Ye, Junbo Meng, Zheng Wan, Bohai Tan","doi":"10.1007/s10064-025-04417-6","DOIUrl":"10.1007/s10064-025-04417-6","url":null,"abstract":"<div><p>In order to investigate the stress evolution of the roof of roof-contacted filling with expansive backfill during the state of lateral confinement release following the second-step of mining, this paper employs both theoretical analysis and numerical simulation methods to examine the variations in roof stress under three distinct roof-contact modes: roof-contacted unfilling (RCU), roof-contacted filling with ordinary backfill (RCO), and roof-contacted filling with expansive backfill (RCE). The results indicate that: (1) During the second-step extraction, upward expansion of the expansive backfill is constrained. Following self-expansion, it exerts pressure on both the roof and the underlying filled pillar, generating expansive stress. This expansive stress actively counterbalances the vertical load on the roof while extending the distribution range of compressive stress upward, leading to a shift in tensile stress concentration towards the center of the stope during this step. (2) The distribution shape of compressive stress within the roof adopts an arch form, extending from points of contact with both sides toward adjacent stopes in this second-step. The roofs of those stopes situated near pillars receive significant support from expansive backfill. (3) The downward pressure exerted by expansive backfill on conventional backfill increases vertical stress at their contact surface between pillars and roofs, thereby enhancing restraint against lateral slippage of pillars.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861558","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

Discontinuities identification from rock outcrop using auto-encoder and point clouds 基于自编码器和点云的露头不连续面识别

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-18 DOI: 10.1007/s10064-025-04453-2

Mehmet Akif Günen, Şener Aliyazıcıoğlu

{"title":"Discontinuities identification from rock outcrop using auto-encoder and point clouds","authors":"Mehmet Akif Günen, Şener Aliyazıcıoğlu","doi":"10.1007/s10064-025-04453-2","DOIUrl":"10.1007/s10064-025-04453-2","url":null,"abstract":"<div><p>Rock slopes and geotechnical structures often exhibit discontinuity planes, which significantly influence their mechanical behavior and stability. The precise identification of these discontinuities is critical for ensuring the safety and cost-effectiveness of construction projects. However, previous methods are often limited by subjectivity, low automation, and challenges in inaccessible or hazardous environments. This study introduces a novel seven-step approach utilizing auto-encoders for estimating the orientation parameters of individual discontinuity sets from point cloud data. The steps include: data collection, filtering point clouds to eliminate outliers, determining neighborhood size, feature extraction, training a stacked auto-encoder for feature learning, estimating discontinuity sets using density-based clustering, and calculating individual discontinuities through the least squares method for orientation parameter estimation. In addition, the methodology incorporates a planarity-based approach for estimating neighborhood size. The statistical performance has been validated through evaluations in two real case studies and one synthetic case study. The classification achieves an accuracy exceeding 95%, highlighting the high efficacy of the approach. Results for orientation parameter estimation show consistency with existing methods and in situ measurements, with average orientation values for discontinuities within 5 degrees for individual sets. This framework represents a considerable advancement in rock discontinuity analysis, offering a robust and automated solution that is particularly effective in hazardous and hard-to-reach areas.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861567","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

Response of stratified soil deposits to the severity of liquefaction phenomena: the Piniada Valley, Greece, case study 层状土壤沉积物对液化现象严重程度的响应：希腊皮尼亚达河谷的案例研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-16 DOI: 10.1007/s10064-025-04441-6

George Papathanassiou, Ilias Fikos, Sotiris Valkaniotis, Alexandros Stampolidis, Dimitra Rapti, Maria Taftsoglou, Riccardo Caputo

{"title":"Response of stratified soil deposits to the severity of liquefaction phenomena: the Piniada Valley, Greece, case study","authors":"George Papathanassiou, Ilias Fikos, Sotiris Valkaniotis, Alexandros Stampolidis, Dimitra Rapti, Maria Taftsoglou, Riccardo Caputo","doi":"10.1007/s10064-025-04441-6","DOIUrl":"10.1007/s10064-025-04441-6","url":null,"abstract":"<div><p>The last decades, successful attempts have been made to quantify the liquefaction potential of a site using liquefaction indices, i.e., <i>LPI</i> and <i>LSN</i>. The accuracy of these indices has been recently questioned due to the mismatch of well-documented cases in stratified soil deposits. We applied these methods at point-bar deposits along the Piniada Valley, Greece, where widespread liquefaction phenomena were triggered by the 2021 Damasi earthquake, considering data derived by six CPTu. The aim of our study was twofold: firstly, examine the vertical and lateral heterogeneity of subsoil profiles within this specific geological-geomorphological feature and secondly investigate the role of the subsoil stratigraphy, on the severity of the ejected material. To address these issues, we additionally applied a geophysical method, i.e., ERT, aiming at testing its capability to detect clay-like and sand-like soil layers and validating the obtained tomographies with in-situ tests data. As a result, we conclude that the stratigraphy of the subsoil layers within a point-bar setting could significantly vary even within a distance of 10–15 m, thus affecting the liquefaction-related behavior and the ejecta potential. The latter seems to be successfully prognosticated by the recently developed approach of L<sub>D</sub>-C<sub>R</sub>. At this regard, the partially stratified soil deposits could not generate enough excess pore pressure to create cracks in the crust layer for reaching the surface. In contrast, sites with a thick continuous sand mixture can generate severe liquefaction manifestations even with an overlying crust layer more than 4 m-thick.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-025-04441-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853616","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

Effects of water migration-induced softening on the stability of soil-rock slopes with irregular rock block rotation behavior 水运移软化对不规则块体旋转土-岩边坡稳定性的影响

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-16 DOI: 10.1007/s10064-025-04433-6

Chuan Wen, Shunqing Liu, Guojun Cai, Zhichao Zhang, Haoqing Xu, Yuhe Sun

{"title":"Effects of water migration-induced softening on the stability of soil-rock slopes with irregular rock block rotation behavior","authors":"Chuan Wen, Shunqing Liu, Guojun Cai, Zhichao Zhang, Haoqing Xu, Yuhe Sun","doi":"10.1007/s10064-025-04433-6","DOIUrl":"10.1007/s10064-025-04433-6","url":null,"abstract":"<div><p>To assess the effects of water-induced softening on slope stability, soil-rock slopes with different major axis inclinations of irregular rock blocks were generated using a stochastic method based on functional distribution. More than 4200 2D stability analyses were performed using strength reduction limit analysis method. For each kind of water-induced softening condition and major axis inclination, the different rock block arrangements had been made. The safety factor and shear dissipation results indicate that the rock block’s major axis inclination have a significant impact on slope stability, even as soil strength continuously decreases. Under the different softening conditions caused by water migration, slopes are most susceptible to failure when the soil throughout the whole soil-rock mixture is softened. In particular, when the soil at the base of the soil-rock mixture softened, a shear sliding zone develop from the slope toe along the contact surface. Furthermore, as soil strength continues to degrade, both an increased softening thickness and a higher volumetric rock block proportion accelerate the rate of slope stability reduction. The impact of increasing softening thickness on slope stability is primarily governed by the soil above the contact surface. It is also noteworthy noting that in slopes with a high volumetric rock block proportion, repeated cycles of water-induced softening leads to a significant loss of soil particles from the structural skeleton. This results in a more rapid decline in slope stability compared to slopes with a lower volumetric rock block proportion.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853666","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

Subpixel offset tracking for landslide deformation monitoring: optimization of input conditions and assessment of vegetation noise 滑坡变形监测的亚像素偏移跟踪：输入条件优化与植被噪声评价

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-15 DOI: 10.1007/s10064-025-04425-6

Huai-xian Xiao, Nan Jiang, Hai-bo Li, Yu-xiang Hu, Jia-wen Zhou

{"title":"Subpixel offset tracking for landslide deformation monitoring: optimization of input conditions and assessment of vegetation noise","authors":"Huai-xian Xiao, Nan Jiang, Hai-bo Li, Yu-xiang Hu, Jia-wen Zhou","doi":"10.1007/s10064-025-04425-6","DOIUrl":"10.1007/s10064-025-04425-6","url":null,"abstract":"<div><p>Surface deformation analysis is a crucial task in landslide research, as it plays an important role in landslide monitoring and serves as a prerequisite for landslide mechanism analyses and risk assessments. High-accuracy surface displacement fields can be derived rapidly by the subpixel offset tracking (sPOT) algorithm based on multitemporal very-high-resolution (VHR) remote sensing data without tedious manual interpretation work. However, some technical characteristics of the availability of sPOT, such as the input conditions and vegetation noise, have not been fully discussed thus far, and these factors may compromise the accuracy of the derived surface displacement fields and thus limit the applicability of sPOT as a high-accuracy image interpretation algorithm. In this study, several quantitative indices from information theory and digital image processing methods were introduced to support the quantitative analysis of the sPOT inputs and outputs. We used two sets of tests to show how different input conditions (including different image band and window parameters) affect the accuracy of the displacement field. Areas with different vegetation statuses in the region of interest (RoI) were then segmented using pattern recognition methods, and the noise level in each area was successfully quantified. Finally, some practical guidelines on the selection of input conditions and filtering of vegetation noise were proposed. The results of this study help to improve the accuracy of the sPOT algorithm from a user’s perspective and are expected to contribute to the in-depth application of sPOT in various fields of geomorpho-dynamics, including landslide deformation monitoring.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144843253","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 thermo-hydro-mechanical coupled model for frost heave in unsaturated clay: ice segregation and vapor migration during horizontal freezing 非饱和粘土冻胀热-水-力耦合模型：水平冻结过程中的冰偏析和蒸汽迁移

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-08-15 DOI: 10.1007/s10064-025-04429-2

Yue Liu, Yupeng Shen, Zhisheng Liu, Jingfu Guo, Chengcheng Luo, Zihan Meng

{"title":"A thermo-hydro-mechanical coupled model for frost heave in unsaturated clay: ice segregation and vapor migration during horizontal freezing","authors":"Yue Liu, Yupeng Shen, Zhisheng Liu, Jingfu Guo, Chengcheng Luo, Zihan Meng","doi":"10.1007/s10064-025-04429-2","DOIUrl":"10.1007/s10064-025-04429-2","url":null,"abstract":"<div><p>Horizontal freezing induces frost heave pressure in retaining structures, foundation pits, and slopes, leading to a variety of engineering challenges. A thermo-hydro-mechanical (THM) coupled model for horizontal freezing in unsaturated soils was developed. This model extends existing THM frameworks for saturated soils by incorporating vapor migration and ice segregation. The governing equations account for soil deformation, water and vapor migration, heat transfer, and the formation and growth of ice lenses. Numerical simulations were conducted using COMSOL Multiphysics, and the model was validated through comparisons with laboratory experiments using a self-developed horizontal frost heave apparatus. The impact of frost heave behavior is examined through simulations that vary the initial water content, dry density, and temperature gradients. Increased water content and higher temperature gradients exacerbate frost heave, while higher dry density slows water migration and reduces ice lens formation. The density and flux of vapor significantly influence vapor migration. Finally, the model was applied to a real foundation pit project to assess frost heave behavior under varying thermal and mechanical conditions. The results indicate that the proposed model accurately captures the development of frost heave and its interaction with soil deformation. These findings offer practical implications for geotechnical design and frost heave mitigation in cold regions.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 9","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144843254","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