Tunnelling and Underground Space Technology最新文献_第10页

Upward propagation of ground disturbance induced by water–sand inrush into a defective tunnel in a dual-stratum geological condition

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-25 DOI: 10.1016/j.tust.2025.106422

Zhifu Shen , Yixin Zhao , Yang Lv , Panpan Wang , Nan Hu , Fangzhi Shu , Hongmei Gao , Zhihua Wang

{"title":"Upward propagation of ground disturbance induced by water–sand inrush into a defective tunnel in a dual-stratum geological condition","authors":"Zhifu Shen , Yixin Zhao , Yang Lv , Panpan Wang , Nan Hu , Fangzhi Shu , Hongmei Gao , Zhihua Wang","doi":"10.1016/j.tust.2025.106422","DOIUrl":"10.1016/j.tust.2025.106422","url":null,"abstract":"<div><div>Water-sand inrush is one of the most destructive disasters for underground structures buried in saturated erodible soils. The related upward propagation of ground disturbance has not been well understood so far. In this study, a series of numerical simulations were performed to investigate such disturbance propagation behavior. Typical dual-stratum geological condition was modeled since this was the most common condition where water–sand inrush disasters had been widely reported previously. The numerical simulations applied discrete particles to model the lower sand layer, continuum mechanics to model the overlying clay layer, and Darcy’s law to model the underground water flow, with solid–fluid coupling considered. The simulation results were reported and were compared with available data from the literature. It was found that the sand and water loss rates were highly dependent on location of the inrush opening, which was attributed to the different local porosity near the opening, a result of the particle-scale fluid–solid coupling. A funnel-type sand flowing pattern can be identified, and the upward propagation of ground disturbance can be described by evolution of a loosening ellipse that outlines the extent of ground experiencing displacement. As the water–sand inrush proceeded, the tendency of vertical alignment of the loosening ellipse suggests an increasing role of gravity relative to the fluid–solid coupling force in driving particle motion. The ground disturbance propagation was accompanied with localization in strain rate, dissipative work, and particle spin rate. The non-uniform ground displacement was accompanied with re-distribution of stress in the form of continuously evolving soil arches. The cross-stratum soil arch can lead to unloading process at the stratum interface and consequently cause upper payer instability.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106422"},"PeriodicalIF":6.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143071470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Simultaneous construction of subways and utility tunnels: A case project in Shenzhen, China

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-25 DOI: 10.1016/j.tust.2025.106421

Xiangsheng Chen , Qiufeng He , Jinshan Qiu , Lei Wang , Dong Su , Meilin Liu , Kunyang Chen , Tong Qiu

{"title":"Simultaneous construction of subways and utility tunnels: A case project in Shenzhen, China","authors":"Xiangsheng Chen , Qiufeng He , Jinshan Qiu , Lei Wang , Dong Su , Meilin Liu , Kunyang Chen , Tong Qiu","doi":"10.1016/j.tust.2025.106421","DOIUrl":"10.1016/j.tust.2025.106421","url":null,"abstract":"<div><div>The increasing urban building density has driven the utilisation of underground space for constructing urban municipal infrastructure and transportation systems, alleviating land scarcity. However, the construction of underground projects within densely populated cities poses challenges such as traffic congestion, secondary excavations, and settlement of adjacent building foundations. Accordingly, the simultaneous construction of subways and utility tunnels (SCSUT) has emerged as a practical solution for developing underground spaces in high-density areas. By integrating the constructions of urban rail transit and municipal infrastructure from a long-term perspective, SCSUT could reduce road occupancy and minimize impacts on existing structures. Despite its advantages, SCSUT implementation remains challenging, with few practical cases available. To gain insight into the SCSUT, this study first examines its necessity and global implementation status. Meanwhile, this research identifies the existing implementation strategies of the SCSUT in terms of construction management, pipeline layout, and typical construction schemes. Furthermore, an in-depth analysis of the largest existing SCSUT project is conducted. Findings indicate that the SCSUT, currently in its early development stage, faces several critical challenges, including the lack of technical standards, complex approval processes and management models, inadequate geological surveys and preliminary planning, and frequent design changes. To realize the significant potential benefits of the SCSUT, future efforts should focus on developing technical standards based on relevant engineering cases, enhancing early-stage planning, and leveraging digital technologies to support construction. This study is anticipated to be a valuable reference for policy improvement and other SCSUT projects similar to the case study.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106421"},"PeriodicalIF":6.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Impact of initial dry density on the evolution mechanism of mud and water burst in fault fracture zones: A series of experimental studies

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-25 DOI: 10.1016/j.tust.2025.106423

Meixia Wang , Shijie Ma , Zongqing Zhou , Weimin Yang , Songsong Bai , Yifan Bai

{"title":"Impact of initial dry density on the evolution mechanism of mud and water burst in fault fracture zones: A series of experimental studies","authors":"Meixia Wang , Shijie Ma , Zongqing Zhou , Weimin Yang , Songsong Bai , Yifan Bai","doi":"10.1016/j.tust.2025.106423","DOIUrl":"10.1016/j.tust.2025.106423","url":null,"abstract":"<div><div>Mud and water bursts within fault fracture zone frequently lead to casualties, equipment damage, and project delays, posing significant risks. A thorough scientific understanding of these mechanisms is essential for effective disaster prevention and control. To investigate the evolution mechanisms of mud and water burst in fault fracture zones, an experimental apparatus was designed to simulate the migration and loss of filling material particles under triaxial loading conditions. Experiments conducted with this apparatus explored the evolution process of mud and water bursts under varying initial dry densities. The results demonstrate that the evolution of mud and water bursts is a complex process, characterized by increased porosity and permeability, decreased strength, and fluctuating viscosity. The initial dry density plays a critical role in determining the failure mode of mud and water bursts. At low initial dry densities, the filling material is prone to seepage failure. In contrast, at high initial dry densities and elevated water pressures, the material is more likely to experience splitting failure. In comparison to seepage failure, the evolution process of splitting failure exhibits a significant delay, with a longer incubation period. However, it can rapidly form seepage channels in a short time, leading to more severe mud and water bursts. Finally, the study analyzed variations in porosity, permeability, and shear strength associated with different failure modes. Generalized models were established to describe the evolutionary characteristics of both seepage and splitting failure. These findings offer valuable insights for improving the safety and stability of tunnel engineering in environments prone to such risks.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106423"},"PeriodicalIF":6.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143071469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

SAM4Tun: No-training model for tunnel lining point cloud component segmentation

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106401

Zehao Ye , Wei Lin , Asaad Faramarzi , Xiongyao Xie , Jelena Ninić

{"title":"SAM4Tun: No-training model for tunnel lining point cloud component segmentation","authors":"Zehao Ye , Wei Lin , Asaad Faramarzi , Xiongyao Xie , Jelena Ninić","doi":"10.1016/j.tust.2025.106401","DOIUrl":"10.1016/j.tust.2025.106401","url":null,"abstract":"<div><div>Asset management ensures the safety and longevity of structures through regular maintenance. Reality capture technologies are increasingly being used for asset inspections to obtain information by generating point cloud data, which is becoming more prevalent in tunnel asset management for precise documentation of tunnel geometry and condition. Integrating semantic information from point clouds is crucial for creating accurate as-built Building Information Models (BIM), essential for project delivery, maintenance, and operations. In this paper, we propose SAM4Tun, a zero-shot automated instance segmentation method for tunnel lining segments. It is based on a Large Vision Model (LVM), prompt-based Segment Anything Model (SAM), and various point cloud and image processing techniques, enabling accurate instance segmentation without requiring any training. The process starts by unfolding tunnel point clouds to generate 2D panoramic images, enabling SAM to be extend its capabilities to point cloud segmentation. To enhance performance, we propose: (i) a local point cloud density-variation method to filter out non-segment parts, and (ii) a geometry feature-guided multi-step point cloud up-sampling method to address uneven point cloud density during projection. Then, we focus on prompt engineering, using traditional image processing techniques to automatically generate template prompt, enabling SAM’s zero-shot ability to achieve precise instance-level segmentation of tunnel linings. The results demonstrate that our no-training model achieved highly accurate instance segmentation, even surpassing supervised learning algorithms. The proposed method addresses the issue of data dependency and serves as the foundation for component-level damage localization and displacement monitoring in tunnel. Our code is available at <span><span>https://github.com/zxy239/SAM4Tun</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106401"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Assessment and spatial variation analysis of the collaborative development potential between underground public spaces and urban rail transit in China’s urban central areas

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106415

Xiaochun Hong , Shengcai Li , Wanghu Sun , Xiang Ji

{"title":"Assessment and spatial variation analysis of the collaborative development potential between underground public spaces and urban rail transit in China’s urban central areas","authors":"Xiaochun Hong , Shengcai Li , Wanghu Sun , Xiang Ji","doi":"10.1016/j.tust.2025.106415","DOIUrl":"10.1016/j.tust.2025.106415","url":null,"abstract":"<div><div>The collaborative development of underground public spaces (UPS) and urban rail transit (URT) in urban central areas is becoming increasingly common in China. However, the lack of a scientific assessment of collaborative development potential leads to some cities experiencing overdevelopment while others underestimate their development needs. This study addresses this gap by conducting a scientific evaluation of the collaborative development potential between UPS and URT in Chinese urban centers. The significance of this evaluation lies in its contribution to understanding effective urban spatial resource allocation and promoting sustainable urban development and efficient use of underground spaces. A collaborative development potential assessment index system was established, consisting of URT development index (D<sub>1</sub>), urban development index (D<sub>2</sub>), urban underground space construction index (D<sub>3</sub>), urban central area development index (D<sub>4</sub>), urban central area URT index (D<sub>5</sub>), and urban central area construction index (D<sub>6</sub>). The entropy weight method was used to calculate the indicator weights, and the TOPSIS model was employed for evaluating the collaborative development potential. The results revealed significant disparities in the collaborative development potential of UPS and URT across urban centers. Cities with the highest potential, such as Shanghai, Beijing, Shenzhen, and Guangzhou, reached a maximum value of 0.6384. With many new urban centers under construction, it is projected that over the next 5 to 10 years, as ongoing projects are completed, the collaborative development potential will continue to improve. Specific optimization recommendations are provided for varying potentials, aiming to guide the scientific and collaborative development of UPS and URT in urban centers by offering data support and decision-making insights.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106415"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Unsupervised seepage segmentation pipeline based on point cloud projection with large vision model

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106410

Zhaoxiang Zhang , Ankang Ji , Zhuan Xia , Limao Zhang , Yuelei Xu , Qing Zhou

{"title":"Unsupervised seepage segmentation pipeline based on point cloud projection with large vision model","authors":"Zhaoxiang Zhang , Ankang Ji , Zhuan Xia , Limao Zhang , Yuelei Xu , Qing Zhou","doi":"10.1016/j.tust.2025.106410","DOIUrl":"10.1016/j.tust.2025.106410","url":null,"abstract":"<div><div>Targeting to sustain the operational safety of tunnels, this paper presents a projection-based approach utilizing large vision model (LVM) inference for efficient and effective multi-class segmentation, including the identification of seepage, in 3D point clouds of tunnels. The proposed approach employs an unsupervised strategy based on point projection and label correction to process input point clouds and enhance semantic inference, particularly in distinguishing between seepage and other segment classes. Furthermore, a large vision model is adopted to improve the method with practical application. To assess the method’s effectiveness, real tunnel point cloud data from a cross-river tunnel section in China is utilized. The results demonstrate: (1) The proposed framework excels in unsupervised seepage segmentation, achieving F1 and Accuracy scores of 0.769 and 0.930, respectively; (2) Competitive unsupervised detection results are achieved across multiple classes, with segmentation F1 scores of 0.743, 0.841, 0.983, 0.970, 0.836, and 0.933 for cable, segment, pipe, powertrack, support, and track classes, respectively; (3) The segmentation model outperforms other state-of-the-art unsupervised point cloud segmentation algorithms and demonstrates competitive performance compared to supervised methods. Overall, this developed method holds promise as the foundation for an automated decision-making system, facilitating tunnel surveys and improving segmentation effectiveness.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106410"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Mechanism of spillage plumes from multiple openings on ceiling temperature distribution in metro tunnel fires based on superposition principle

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106412

Zhihe Su , Yanfeng Li , Runzhou Luo , Hua Zhong , Junmei Li , Zhihao Geng , Zhicheng Guo

{"title":"Mechanism of spillage plumes from multiple openings on ceiling temperature distribution in metro tunnel fires based on superposition principle","authors":"Zhihe Su , Yanfeng Li , Runzhou Luo , Hua Zhong , Junmei Li , Zhihao Geng , Zhicheng Guo","doi":"10.1016/j.tust.2025.106412","DOIUrl":"10.1016/j.tust.2025.106412","url":null,"abstract":"<div><div>This study revisits the coupling effects of tunnel ceiling temperature distribution caused by plume escapes from metro carriage doors during a fire. The impact of fire heat release rates on the ceiling temperature distribution under various door-opening scenarios was analysed by utilising the superposition principle. The concept of virtual fire sources was proposed to model the ceiling temperature distribution associated with plume outflows from carriage doors. The results indicate that the ceiling temperature distribution in a metro tunnel fire is primarily influenced by virtual fire sources generated by plumes escaping through multiple doors. The maximum ceiling temperature from a single virtual fire source was significantly lower than that of a real fire, and the temperature decay followed a double exponential function. The heat flow ratio for each door remained nearly constant for different fire heat release rates, and variations in heat flow with door positions were analysed. The incorporation of heat loss terms into the theoretical model improved the accuracy and quantification of heat loss coefficients. A predictive model for the ceiling temperature distribution caused by metro carriage fires was developed based on the superposition principle, with the predictions well aligning with the experimental results. This study enhances our understanding of the ceiling temperature distribution in multi-opening structures and guides scenarios involving multiple fire sources within tunnels.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106412"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 laboratory study of conditioning clay-rich soils in seawater environments for EPBS tunnel constructions in coastal areas

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106409

Bingnan Wang , Ming Huang , Yao Lu , Chaoshui Xu , Yu Wang

{"title":"A laboratory study of conditioning clay-rich soils in seawater environments for EPBS tunnel constructions in coastal areas","authors":"Bingnan Wang , Ming Huang , Yao Lu , Chaoshui Xu , Yu Wang","doi":"10.1016/j.tust.2025.106409","DOIUrl":"10.1016/j.tust.2025.106409","url":null,"abstract":"<div><div>Land reclamation from the sea is increasingly common in coastal areas in China as its urban population continues to grow and the construction of subways in these areas becomes an effective way to alleviate transportation problems. Earth pressure balance shield (EPBS) tunneling in reclaimed lands often faces the problem of seawater erosion which can significantly affect the effectiveness of soil conditioning. To investigate the impacts, in this work, the stratum adaptability of EPBS foaming agents in seawater environments was evaluated based on a series of laboratory tests. The Atterberg limits and vane shear tests were carried out to understand the evolution characteristics of mechanical properties of clay-rich soils soaked in seawater and then conditioned with foams. The results revealed that, for the same foaming agents, the liquid limit and plastic limit of soils soaked in seawater were lower than those in deionized water due to the thinning of bound water films adsorbed on the surface of soil particles. Similarly, soils soaked in seawater had lower shear strength. In addition, the results indicated that the foam volume (FV) produced by foaming agents using seawater as the solvent was slightly higher than that when using the deionized water due to the higher hydration capacity of inorganic salt cations in seawater compared with organic substances. It was also shown that seawater had negative effects on the half-life time (T<sub>1/2</sub>) and the dynamic viscosity (η) of foaming agents due to the neutralization reaction between anions in the foaming agents and Na<sup>+</sup> present in seawater. The test results also confirmed that 0.5 % of the tackifier (CMC) can alleviate the issue of thin foam films caused by seawater intrusion and improve the dynamic viscosity of foaming agents more effectively, leading to superior resistance to seawater intrusion in EPBS tunnel constructions.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106409"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Seismic failure analysis and simplified prediction methods for underground frame structures at earth fissure sites

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106408

Zhi Chen , Zhongming Xiong , Xuan Chen , Penggang Tian , Jianhui Niu , Zhixun Xie

{"title":"Seismic failure analysis and simplified prediction methods for underground frame structures at earth fissure sites","authors":"Zhi Chen , Zhongming Xiong , Xuan Chen , Penggang Tian , Jianhui Niu , Zhixun Xie","doi":"10.1016/j.tust.2025.106408","DOIUrl":"10.1016/j.tust.2025.106408","url":null,"abstract":"<div><div>Earth fissures pose a significant risk to the seismic safety of underground structures at earth fissure sites (USEFs), particularly for large-scale underground frame structures such as subway stations. To date, the failure mechanism of USEFs has only been analyzed qualitatively and requires further comprehensive investigation. Moreover, the existing failure prediction methods for USEFs are complicated, challenging to execute, time-consuming, and incur significant financial costs, necessitating the establishment of a simple and efficient failure prediction method. This study conducted a shaking table test on a USEF to investigate the dynamic response of earth fissure sites and the seismic damage characteristics of a USEF. Based on the experimental results, a tailored pushover analysis method was developed to predict the seismic failure of the USEF and was applied to reveal its underlying seismic failure mechanisms. It was found that low-frequency ground motions are significantly amplified at the earth fissure site and that the acceleration amplitudes at the hanging wall and footwall are nonuniform. This nonuniform acceleration leads to significant extrusion and separation between the hanging wall and footwall. The extrusion causes the soil to rise, exerting additional axial pressure and bending moments on the lateral resistance members. These additional forces lead to uneven internal force distributions within the USEF, highlighting that structurally weak members are prone to failure and accelerating structural damage. The bottom column at the hanging wall is the critical seismic member of the USEF, which requires focused reinforcement and monitoring to increase resilience. The tailored pushover analysis method accurately represents the deformation characteristics at earth fissure sites. The method captures distinct structural destruction patterns, enhancing its utility in seismic failure prediction for USEFs.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106408"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of physics-data-driven method to identify the weak interlayers in underground geotechnical engineering

IF 6.7 1区工程技术

Tunnelling and Underground Space Technology Pub Date : 2025-01-24 DOI: 10.1016/j.tust.2025.106416

Zitao Chen , Quansheng Liu , Penghai Deng , Yin Bo , Demei Liu , Yucong Pan , Honggan Yu

{"title":"Application of physics-data-driven method to identify the weak interlayers in underground geotechnical engineering","authors":"Zitao Chen , Quansheng Liu , Penghai Deng , Yin Bo , Demei Liu , Yucong Pan , Honggan Yu","doi":"10.1016/j.tust.2025.106416","DOIUrl":"10.1016/j.tust.2025.106416","url":null,"abstract":"<div><div>The accurate description of the internal structure of weak interlayers is a prerequisite for the safe construction of deep geotechnical engineering with complicated geological conditions. Geophysical tomography techniques are usually used to detect the mechanical properties and spatial distribution and of deep weak interlayers. However, the mechanical properties of weak interlayers cannot be measured directly and the spatial distribution is conventionally difficult to explain by geophysical tomography techniques with ambiguous and inaccurate. In this work, a novel Physics-Data-Driven Method (PDDM) is proposed to identify the internal structure of weak interlayers based on inverse analysis. The constrained covariance matrix is constructed based on the results of geophysical tomography, and a structure similar to “fault core-damage zone-host rock” is achieved, which accurately describes the spatial distribution of weak interlayers. The field application results of Xiluodu underground chamber show: 1) Compared with conventional inverse analysis, PDDM enhances the convergence of simulation results to the field observations, with the relative error basically within 20%, meeting the engineering precision requirements; 2) PDDM can continuously optimize the spatial distribution of the weak interlayer based on the results of geophysical tomography, and finely identify the internal structure and distribution range. The results of PDDM have positive significance for engineering disaster prevention near weak interlayers.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"158 ","pages":"Article 106416"},"PeriodicalIF":6.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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