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

Experimental study on the influence of wetting deformation on the strength and deformation characteristics of rockfill materials 润湿变形对堆石料强度及变形特性影响的试验研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-25 DOI: 10.1007/s10064-025-04468-9

Zhitao Zhang, Enyue Ji, Zhongzhi Fu, Shengshui Chen

{"title":"Experimental study on the influence of wetting deformation on the strength and deformation characteristics of rockfill materials","authors":"Zhitao Zhang, Enyue Ji, Zhongzhi Fu, Shengshui Chen","doi":"10.1007/s10064-025-04468-9","DOIUrl":"10.1007/s10064-025-04468-9","url":null,"abstract":"<div><p>This study investigates the loading-wetting relationship of rockfill materials through oedometric and triaxial compression tests on two types of rockfill materials during the loading-wetting cycle. Despite significant differences in lithology, it was observed that the initial reloading phase following wetting in both oedometer and triaxial tests consistently involved a degree of plastic hardening, indicating a strong coupling effect between loading and wetting. The universality of this plastic hardening was further validated using a weakening model for rockfill materials. Notably, the hardening caused by the sliding, crushing and rearrangement of rock particles will always dominate, rather than the softening of rock particles. In terms of strength parameters, subsequent loading primarily influenced the cohesion of the material, while the internal friction angle remained largely unchanged. Finally, a conceptual model of the loading-wetting coupling was developed based on the elastic-plastic hardening theory. This model is straightforward and offers potential as a framework for expanding into a more comprehensive elastic-plastic constitutive model.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169714","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

Dynamics and mechanisms of subaqueous gravity flows composed of viscous liquids and particles 粘性液体和颗粒组成的水下重力流的动力学和机制

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-23 DOI: 10.1007/s10064-025-04465-y

Chen Peng, Xingyue Li, Yu Huang

{"title":"Dynamics and mechanisms of subaqueous gravity flows composed of viscous liquids and particles","authors":"Chen Peng, Xingyue Li, Yu Huang","doi":"10.1007/s10064-025-04465-y","DOIUrl":"10.1007/s10064-025-04465-y","url":null,"abstract":"<div><p>Subaqueous gravity flows can cause significant damage in geotechnical engineering, threatening both life and infrastructure. Although real subaqueous gravity flows are complex and may contain both particles and slurry, the consideration of the complicated compositions and their interactions are challenging. Here, a subaqueous gravity flow is explicitly considered as a particle-slurry mixture in water, modeled with coupled computational fluid dynamics (CFD) and discrete element (DEM). Both intra-phase and inter-phase interactions, including particle-particle, particle-slurry, particle-water, slurry-water interactions, are realized in the unified CFD-DEM framework. Particularly, the CFD model of subaqueous slurry as a Herschel-Bulkley (HB) fluid and the CFD-DEM model of a fluid-particle flow are respectively calibrated and verified. The collapses of five particle-slurry mixtures under water were then simulated, along with a reference case that a particle column collapses in water. The results show that, the occurrence of slurry can either promote or inhibit the particle motion, depending on the combined effect of fluid viscosity and density. The reduced potential energy shortly after the collapse seldom transfers to the kinetic energy of the flow in cases with slurry, in contrast to the efficient energy transfer in the reference case. A consistent trend is obtained between the runout distance and a proposed dimensionless number defined by energy transfer and time scale of the collapse. Interestingly, a strong correlation is captured between the positive relative particle-fluid velocity along the horizontal direction and the positive force along the vertical direction, indicating the promoted particle motion is due to the vertical interaction force.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110464","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

Effect of natural hydraulic lime on water retention properties of earthen plaster 天然水工石灰对灰泥保水性能的影响

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-23 DOI: 10.1007/s10064-025-04442-5

Quanquan Jia, Wenwu Chen, Yanmei Tong, Eng-Choon Leong

{"title":"Effect of natural hydraulic lime on water retention properties of earthen plaster","authors":"Quanquan Jia, Wenwu Chen, Yanmei Tong, Eng-Choon Leong","doi":"10.1007/s10064-025-04442-5","DOIUrl":"10.1007/s10064-025-04442-5","url":null,"abstract":"<div><p>Earthen plasters are widely used around the world, but their poor water stability has resulted in many deteriorations. Therefore, natural hydraulic lime (NHL), which has superior performance, is mixed with earthen plaster for conservation/restoration work. However, the effect of NHL on the water-retention properties of the plaster has not been fully investigated. For this purpose, several types of NHL blended plasters were prepared, and the effect of NHL on the water-retention properties of earthen plaster was investigated by pressure plate tests, filter paper tests, mercury intrusion porosimetry tests, and nitrogen adsorption tests. The results show that the addition of NHL significantly affects the water-retention properties of the earthen plaster (Dengban clay). Compared with Dengban clay, the NHL blended plasters have higher air-entry values and a steeper water-retention curve in the capillary dominant stage due to the change of pore structure, while in the adsorption dominant stage, the NHL blended plasters adsorb less water due to the decrease in specific surface area and have smaller hysteresis. For the earthen plaster murals in the grottoes of northwestern China where the relative humidity can range from 20 to 85%, the degree of saturation of the Dengban clay can be up to 21.5%. Therefore, a lower saturated blended plasters of NHL2 (16%) and NHL5 (17%) is more suitable for conservation. Considering that Dengban clay can have a degree of saturation up to 21.5%, it is important to eliminate capillary water in the routine maintenance of the earthen plaster.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110463","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 experimental study of multiple P-T effects on CO2/CH4 breakthrough pressure in partially saturated sandstone with low permeability 低渗透部分饱和砂岩多重P-T对CO2/CH4突破压力影响的对比实验研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-18 DOI: 10.1007/s10064-025-04497-4

Yi Li, Wendong Dan, Xiangyang Li, Lei Lv, Qi Li, Shiyu Zhao, Qingchun Yu

{"title":"Comparative experimental study of multiple P-T effects on CO2/CH4 breakthrough pressure in partially saturated sandstone with low permeability","authors":"Yi Li, Wendong Dan, Xiangyang Li, Lei Lv, Qi Li, Shiyu Zhao, Qingchun Yu","doi":"10.1007/s10064-025-04497-4","DOIUrl":"10.1007/s10064-025-04497-4","url":null,"abstract":"<div><p>The evaluation of cap rock closure efficiency and the exploitation of natural gas significantly depend on the breakthrough pressure parameter. This experiment assesses the breakthrough pressures of CO<sub>2</sub> and CH<sub>4</sub> in partially saturated sandstone with low-permeability under various pressure and temperature conditions using a stepwise method. The novelty of this study lies in enhancing the understanding of the trends in CO<sub>2</sub>/CH<sub>4</sub> breakthrough pressure under differing temperature and pressure conditions, as well as the comparative differences between them. Additionally, the study examines the effects of characteristics such as viscosity ratio, interfacial tension, and wettability on breakthrough pressure. The findings reveal a positive correlation between CO<sub>2</sub> breakthrough pressure and both pressure and temperature, while CH<sub>4</sub> breakthrough pressure exhibits a negative correlation with these variables. Under varying pressure and temperature scenarios, the breakthrough pressure of CO<sub>2</sub> surpasses that of CH<sub>4</sub>, with both being more significantly influenced by the pressure conditions. Furthermore, CH<sub>4</sub> breakthrough pressure is more sensitive to changes in pressure or temperature compared to CO<sub>2</sub>. Based on the displacement stabilization phase diagram, viscosity ratio and capillary force emerge as the dominant factors affecting the breakthrough processes of CO<sub>2</sub> and CH<sub>4</sub>. This study provides valuable references for evaluating the sealing properties of caprock, offers guidance for CO<sub>2</sub>-EGR engineering, and contributes to the establishment of numerical models for CO<sub>2</sub>/CH<sub>4</sub> mixed gases.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073795","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 dynamic loading effects and disaster mitigation performance of open-type check dams 开式挡土坝动载效应及减灾性能研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-17 DOI: 10.1007/s10064-025-04473-y

Baohong Lv, Changming Wang, Zefang Zhang, Mingmin Zhang

{"title":"Study on dynamic loading effects and disaster mitigation performance of open-type check dams","authors":"Baohong Lv, Changming Wang, Zefang Zhang, Mingmin Zhang","doi":"10.1007/s10064-025-04473-y","DOIUrl":"10.1007/s10064-025-04473-y","url":null,"abstract":"<div><p>Open-type check dams are extensively employed to alleviate the impact of debris flow disasters in mountainous terrains. However, the mitigation performance of permeable barriers under coupled slurry and boulder movement remains insufficiently studied. Furthermore, designers often overlook the significant dynamic loading effects of debris flows, leading to insufficient structural safety margins and frequent damages. To address these issues, this paper investigates both the dynamic load effects (bending moments and shear forces) on open-type check dams and their mitigation performance. The study employs Euler beam theory to solve the structural dynamic response and a coupled SPH-DEM-FEM numerical method to simulate debris flow interaction with the dam. The results of the study indicate that the dynamic load effects significantly exceed static load effects. For open-type dams, impact forces manifest as sawtooth impulses dominated by the instantaneous impact of boulders, while close-type dams experience rectangular impulses dominated by slurry siltation pressure. Numerical simulations reveal that a relative opening size (opening size to maximum boulder diameter ratio) greater than or equal to 2 effectively prevents dam plugging across varying boulder contents (10%-30%). The research achievements provide a scientific basis for the design of open-type check dams, enhancing both structural safety and regulatory efficacy.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073900","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 of true laterites for their use as liners in karst-depression tailings impoundments 喀斯特坳陷尾矿库衬垫用真红土的评价

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-17 DOI: 10.1007/s10064-025-04466-x

Hai-Yan Gao, Jia-Ming Zhang, Ji-Pu Chen, Lin Tian, Kun Wang, Ze-Min Xu

{"title":"Assessment of true laterites for their use as liners in karst-depression tailings impoundments","authors":"Hai-Yan Gao, Jia-Ming Zhang, Ji-Pu Chen, Lin Tian, Kun Wang, Ze-Min Xu","doi":"10.1007/s10064-025-04466-x","DOIUrl":"10.1007/s10064-025-04466-x","url":null,"abstract":"<div><p>The true laterites mantling karst depressions acted as liners in tailings impoundments in the Gejiu mining area, southwestern China. To investigate the feasibility of true laterites as liners to retain pollutants in tailings impoundment, geotechnical, chemical, mineralogical and isothermal adsorption tests were performed on true laterites, with Kunming laterites rich in typical clay minerals as a control. The results indicated that true laterites in the depressions were dominated by Al-Fe-Mn oxide nodules and only contained trace amounts of typical clay minerals such as kaolinite. Nevertheless, true laterites were still fine-grained, and the geotechnical properties satisfied the basic requirements as a hydraulic barrier material. Additionally, true laterites exhibited a great potential to adsorb Heavy metal ions, with removal efficiencies of up to 97%, 99%, and 99% for Mn<sup>2+</sup>, Hg<sup>2+</sup>, and Cd<sup>2+</sup>, respectively, at an initial concentration of 20 mg/L. Compared to Kunming laterites, although Gejiu true laterites lacked typical clay minerals and had smaller specific surface area and cation exchange capacity, the adsorption capacity of true laterites for Mn<sup>2+</sup>, Hg<sup>2+</sup> and Cd<sup>2+</sup> did not weaken as expected, and even had a better adsorption capability for Hg<sup>2+</sup>, which can be attributed to the presence of Al-Fe-Mn concretions rich in true laterites. The complexation of metals with surface functional groups, combining with physical sorption and ion exchange were likely the primary mechanisms for Mn<sup>2+</sup>, Hg<sup>2+</sup> and Cd<sup>2+</sup> adsorption on true laterites. Considering the above, the true laterites in karst depressions could be used as the most cost-effective liner materials for tailings impoundments.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073965","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

The seepage characteristics of a rockfill dam with multi- control measures: insights from long-term field monitoring 多控制措施堆石坝渗流特征：长期现场监测的启示

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-15 DOI: 10.1007/s10064-025-04478-7

Qiuxiang Huang, Yan Zhou, Zhongxiang Ning, Jialin Wang

{"title":"The seepage characteristics of a rockfill dam with multi- control measures: insights from long-term field monitoring","authors":"Qiuxiang Huang, Yan Zhou, Zhongxiang Ning, Jialin Wang","doi":"10.1007/s10064-025-04478-7","DOIUrl":"10.1007/s10064-025-04478-7","url":null,"abstract":"<div><p>Since the first impoundment in 2008, there has been significant and persistent leakage on the right bank of the Renzonghai Dam in Sichuan Province, China. Despite four major repair campaigns, the issue remained unresolved through 2019. This study investigates the seepage characteristics and controlling factors by comprehensively analyzing a decade (2009–2019) of monitoring data (water levels, seepage quantities) and employing numerical simulations to evaluate the effectiveness of the dam’s impervious curtain. The analysis reveals that the primary cause is a construction defect: the lower anti-seepage curtain was not built to its design depth, which facilitates the principal leakage pathway: bypass seepage where water flows under the curtain and through the highly conductive fault and fissure network of the right abutment. The other is the internal leakage occurring through the compromised connection between the cutoff wall and the geomembrane. The strong hydraulic connection between the reservoir and the right bank is confirmed by high reduction coefficients (> 0.7) and minimal head loss (as low as 9.77 m) in downstream boreholes. Despite the significant leakage volume, a stability analysis shows that the hydraulic gradients within the dam (ranging from 0.019 to 0.119) remain below permissible limits. This indicates that, due to effective internal drainage, the immediate risk of seepage-induced failure is low. The findings provide a definitive explanation for the persistent leakage and offer a clear basis for targeted remediation.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057594","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

Integrating geotechnical monitoring for landslide analysis at PK232, East-West highway, Algeria 阿尔及利亚东西高速公路PK232滑坡综合岩土监测分析

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-13 DOI: 10.1007/s10064-025-04475-w

El-oualid Bounab, Bensehamdi Salim, Imad Messai

{"title":"Integrating geotechnical monitoring for landslide analysis at PK232, East-West highway, Algeria","authors":"El-oualid Bounab, Bensehamdi Salim, Imad Messai","doi":"10.1007/s10064-025-04475-w","DOIUrl":"10.1007/s10064-025-04475-w","url":null,"abstract":"<div><p>Landslides pose significant risks to infrastructure, populations, and economic activities, especially in areas with challenging geological and hydrological conditions. This study examines the PK232 landslide along the East-West Highway in northeastern Algeria, a site with steep slopes, clay-rich soils, and notable groundwater effects. Through field investigations and the use of inclinometric and piezometric monitoring systems, the research characterizes the sliding mass’s geometry and internal structure, assesses groundwater’s role in slope instability, and evaluates the effectiveness of stabilization measures. The study identifies two distinct sliding blocks with slip surfaces at depths of approximately 17 m and 22 m. Monitoring data reveal that rainfall-induced groundwater fluctuations strongly correlate with lateral movements, underscoring groundwater as a key triggering factor. While retaining piles reduced sliding in the upper block, they were less effective in stabilizing deeper movements, highlighting the need for improved drainage and stabilization systems. This research provides new insights into the mechanisms driving the PK232 landslide and offers practical recommendations for enhancing slope stability in similar regions. By systematically integrating advanced monitoring techniques with field data, this study advances the understanding of landslides in geologically complex environments, addressing a critical knowledge gap in North African geotechnical research.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037154","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

High-precision in-situ acquisition of joint morphology data and geometric heterogeneity study of roughness 节理形态数据的高精度原位采集与粗糙度几何非均质性研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-08 DOI: 10.1007/s10064-025-04459-w

Qi Sun, Lizhi Du, Wen Zhang, Junqi Chen, Changwei Lu, Hongjiang Liu, Zhengxuan Xu, Yinxu Zhang, Yunpeng Zhao

{"title":"High-precision in-situ acquisition of joint morphology data and geometric heterogeneity study of roughness","authors":"Qi Sun, Lizhi Du, Wen Zhang, Junqi Chen, Changwei Lu, Hongjiang Liu, Zhengxuan Xu, Yinxu Zhang, Yunpeng Zhao","doi":"10.1007/s10064-025-04459-w","DOIUrl":"10.1007/s10064-025-04459-w","url":null,"abstract":"<div><p>The joint roughness coefficient (JRC) is a key parameter for evaluating the shear strength of rock masses and the stability of rock slopes. However, obtaining high-precision in situ joint surface morphology data on steep rock slopes remains challenging. This study proposes a UAV-based multi-angle nap-of-the-object photogrammetric method, which enables vertical imaging of joint surfaces by flying at close range and adjusting the shooting angle, allowing accurate acquisition of 3D joint morphology in the field. The method was applied to a high-steep slope on the left bank of the Sequ River in Tibet, where a 3D point cloud model with a resolution of 7 mm was constructed. Forty-nine joint samples larger than 2 m² were extracted and expanded to 1176 analysis samples through scale magnification and shear direction variation. Roughness analysis based on the <i>θ*</i><sub><i>max</i></sub><i>/(C + 1)</i><sup><i>3D</i></sup> parameter shows that joint roughness approximately follows a log-normal distribution at small scales but gradually deviates as scale increases; moreover, roughness decreases exponentially with increasing point interval. Anisotropy analysis reveals that directional variation in roughness diminishes with growing scale, and the anisotropy ratio approximately follows a normal distribution. The results demonstrate that this multi-angle photogrammetric technique effectively overcomes technical constraints in complex terrain, providing a reliable data foundation and methodological support for the quantitative estimation of JRC and slope stability evaluation in high-steep rock slopes.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007900","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 into the influence of particle size distribution on the face stability of EPB shield tunnels in granular soils 粒径分布对颗粒土中盾构隧道工作面稳定性影响的研究

IF 4.2 2区工程技术

Bulletin of Engineering Geology and the Environment Pub Date : 2025-09-08 DOI: 10.1007/s10064-025-04435-4

Jun Wang, Ning Tian, Guojin Lin, Kun Feng, Xiongyu Hu, Hongqiang Xie, Xiaojian Ye, Gang Cao

{"title":"Investigation into the influence of particle size distribution on the face stability of EPB shield tunnels in granular soils","authors":"Jun Wang, Ning Tian, Guojin Lin, Kun Feng, Xiongyu Hu, Hongqiang Xie, Xiaojian Ye, Gang Cao","doi":"10.1007/s10064-025-04435-4","DOIUrl":"10.1007/s10064-025-04435-4","url":null,"abstract":"<div><p>Face failure of earth pressure balance (EPB) shield tunnels in granular soils is a great threat to the surroundings. This paper aims at investigating the influence of particle size distribution (PSD) on the failure mechanism from both the macroscopic and microscopic perspectives. The macroscopic investigation was carried out by performing several model tests which incorporated a miniature shield, and the microscopic investigation was conducted by utilizing the advantage of the discrete element method (DEM). The face failure of tunnels with <i>C</i>/<i>D</i> = 2.0 (<i>C</i> = tunnel cover depth; <i>D</i> = tunnel diameter) propagates to ground surface in three phases due to soil arching. PSD has influence on the timing of face failure, the size of failure zone and the soil arching. The proportion of strong contacts and the maximum soil arching increase with larger content of middle particles, while they decrease with larger content of fine particles. The soil arching maximizes when the local failure occurs and weakens in the transition phase, it extinguishes when propagating to <i>Z</i>/<i>D</i> = 0.4 (<i>Z</i> = depth from ground surface) as the global failure occurs regardless of PSD.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"84 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007899","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