Tunnelling and Underground Space Technology最新文献

{"title":"Performance of the corrugated metal pipe sliplining method using FRP pipes","authors":"Aluth Premasuriya,&nbsp;Weena Lokuge,&nbsp;Warna Karunasena,&nbsp;Allan C. Manalo","doi":"10.1016/j.tust.2025.106603","DOIUrl":"10.1016/j.tust.2025.106603","url":null,"abstract":"<div><div>Corrugated Metal Pipes (CMP) have been extensively used in culverts for decades. Currently, there is a significant growing demand for CMPs to be either replaced or rehabilitated due to their deterioration caused by corrosion. Sliplining is one of the simplest and cost-effective methods of CMP culvert rehabilitation. This paper examined the structural performance of CMP sliplined by Fibre Reinforced Polymer (FRP) composites considering the effects of host pipe and the grout infill. In this research, CMP, FRP pipe and FRP sliplined CMP were subjected to parallel plate load test (PPLT) and the load deflection behaviour and failure modes were examined. A low strength flowable mortar mix was used as the Controlled Low Strength Material (CLSM) to fill the annular space between pipes. It was observed that the core failure of the FRP pipe governs the failure of the sliplined CMP. A change in load deflection behaviour of the host pipe of sliplined CMP system was also observed with reference to the PPLT results of the FRP pipe sample itself. Further, the failure modes of the FEM and the failure modes observed in the experiments were in good agreement.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798595","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}

{"title":"Investigation of the flame behavior and smoke temperature of tunnel spill fires under different top ceiling smoke extraction velocity","authors":"Chenghao Ye,&nbsp;Jiaxing Li,&nbsp;Meiqing Xia,&nbsp;Xuejing Hu,&nbsp;Xue Jiang,&nbsp;Peihong Zhang","doi":"10.1016/j.tust.2025.106625","DOIUrl":"10.1016/j.tust.2025.106625","url":null,"abstract":"<div><div>The top ceiling smoke exhaust under different velocities not only removes heat and smoke in tunnel, but also has complex effects on the fresh and cold air entrainment, as well as the convective and radiative heat transfer, which in result affects the diffusion of the spilled fuel, the flame behavior and smoke temperature of tunnel spill fires. To investigate the impact of the top ceiling smoke extraction velocity on the behavior of tunnel spill fires, a series of experiments involving ethanol spills were conducted in a model tunnel. These experiments aimed to establish models that correlates with flame behavior and smoke temperature distribution, and to facilitate an analysis of the heat transfer mechanisms. The research findings reveal that as the smoke extraction velocity increases, alterations in the heat transfer mechanism and variations in the air entrainment effect lead to a biphasic trend, i.e., an initial decrease followed by an increase in the combustion area and flame oscillation frequency, while flame height shows the opposite trend. Furthermore, the dimensionless model, which accounts for the interplay between combustion intensify mechanism and the heat dissipation mechanism provides explanations for the observed variations in flame behavior. Regarding the maximum temperature rise on the tunnel ceiling, it is primarily dependent on the discharge rate, due to the asymmetrical positioning of the smoke vent, the longitudinal temperature on the left zone of the ceiling attenuates more rapidly than that on the right zone. On the left side, the temperature attenuation trend is jointly influenced by both the discharge rate and the smoke extraction velocity, whereas on the right, it solely depends on the discharge rate. Further heat transfer analyses highlight that the smoke extraction velocity influences both convective and radiative heat feedbacks, with convective heat feedbacks playing a dominant role. As the discharge rate increases, spill fires eventually transition to being dominated by radiative heat transfer. In this study, between 30% and 50% of the heat in the fuel layer was lost through the bottom plate, primarily through conduction, followed by convection.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106625"},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806918","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}

{"title":"Four typical variation patterns of mid-infrared spectra of the mafic mineral anomalies for fault zone identification","authors":"Zhenhao XU ,&nbsp;Tao HAN ,&nbsp;Tengfei YU ,&nbsp;Peng LIN","doi":"10.1016/j.tust.2025.106599","DOIUrl":"10.1016/j.tust.2025.106599","url":null,"abstract":"<div><div>Mid-infrared spectroscopy can provide a large amount of rapid, in-situ mineral information for geological mapping, mineral exploration, and the construction of tunnels and underground engineering projects. However, the mixed characteristics of mid-infrared spectra lead to strong spectral variation, which seriously hinders the accuracy of mineral identification using mid-infrared technology. We focused on the variation patterns of infrared spectra and the spectrum identification criteria of mafic mineral anomaly. First, we constructed 13 groups of binary, ternary and quaternary mafic mineral anomaly assemblages, analyzed the influence of mineral composition and content changes on spectral characteristics, and revealed the variation patterns of infrared spectra of four categories and five types of mafic mixed minerals: self-stabilization, superimposed interference (step type and non-step type), camouflage enhancement and annihilation. We proposed the spectral identification criteria of mafic mineral assemblages and clarified the identification marks of endmember minerals in mixed minerals. Secondly, we found that the reflection peak of the mixed spectrum shifts linearly with the endmember mineral composition and content change. The reflectance peak position of the biotite + albite + chlorite mixed spectrum between 9850–9910 nm shows a high linear correlation with the albite content, achieving an R² of up to 1. This law can provide new ideas for the quantitative inversion of minerals in mid-infrared spectroscopy. Finally, we discussed the nonlinear mixing effect of the mixed spectrum in the 8 to 11 μm range, where self-absorption effects between mineral particles and the distinct origins of different reflectance peaks are vital factors. This study refines the mid-infrared spectral variation patterns and identification criteria for mafic mineral anomaly, which can significantly improve the accuracy of mafic mineral anomaly identification. Additionally, it provides theoretical guidance for the application of mid-infrared technology in disaster prevention and control in tunnel and underground engineering projects.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106599"},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806914","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}

{"title":"Study on the failure process of surrounding rock of arch roadway after high temperatures: Insights from surrounding rock fracture and the corresponding acoustic response","authors":"Weijing Xiao ,&nbsp;Hongpeng Wan ,&nbsp;Dongming Zhang ,&nbsp;Yonghu Huang ,&nbsp;Shujian Li","doi":"10.1016/j.tust.2025.106616","DOIUrl":"10.1016/j.tust.2025.106616","url":null,"abstract":"<div><div>High temperatures affect the physical and mechanical properties of roadways surrounding rock and affect their stability. To study the failure process of surrounding rock of arch roadway after a fire, biaxial compression tests were carried out on rectangular rock samples with a prefabricated hole after 25 ∼ 1000°C treatment. During the test, deformation, splitting and acoustic emission (AE) signals are monitored. The failure characteristics and fracture mechanism of the thermally damaged surrounding rock are analysed, and precursor information is obtained. The research results indicated that the straight wall is the danger zone, and with increasing loading, the slab cracks and large rock debris in the straight wall become obvious between 25 and 400 °C, whereas the falling of small rock debris characterizes the failure mode at temperatures greater than 600 °C. The weight of rock debris with a size less than 0.25 mm increases with increasing temperature. When the stress level is lower than 80 %, the tensile fracture mechanism is dominant in the bearing process of the surrounding rock between 25 °C and 400 °C, and the shear fracture mechanism is dominant above 600 °C, which indicates that the fracture mechanism of the surrounding rock is related to the temperature. However, the final failure is controlled by the shear failure mechanism, which is independent of temperature. The evolution of the <em>b</em> value, correlation dimension and nonfixed critical exponent of the AE signal have good consistency and can reflect the failure process of a thermally damaged surrounding rock, which can be used to forecast instability after thermal damage. The research results provide a basis for disaster analysis and warning of the instability of roadway surrounding rock after a fire.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106616"},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806915","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}

{"title":"Underground landscapes: volcanism, lava tubes, and man","authors":"Francesco Axel Pio Romio ,&nbsp;Gianni Lobosco","doi":"10.1016/j.tust.2025.106618","DOIUrl":"10.1016/j.tust.2025.106618","url":null,"abstract":"<div><div>Lava tubes, or pyroducts, have played a significant role in human history, serving as shelters, storage spaces, and dwellings across diverse cultures, times, and geographies. However, knowledge about their uses remains fragmented across various disciplines and sources. This research consolidates an extensive review of human interactions with lava tubes through bibliographical studies and on-site expeditions, culminating in the creation of the Atlas of Lava Tube Uses. Integrating geological and anthropological insights, this atlas provides a comprehensive resource that bridges the gap between terrestrial history and extraterrestrial exploration. In fact, since the 1960s, researchers have hypothesized the existence of similar underground volcanic caves on the Moon and Mars. To date, 271 and 1062 potential cave entrances have been identified on the lunar and Martian surfaces, respectively. These extraterrestrial structures are increasingly viewed as promising candidates for future space habitats, offering protection from extreme environmental conditions. By connecting Earth’s historical use of pyroducts with modern exploration efforts, this study lays the groundwork for designing liveable and sustainable underground habitats beyond our planet while highlighting the significance of these underground landscapes in Earth’s heritage.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106618"},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806916","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}

{"title":"Construction of critical speed threshold model based on psychophysiological perception of driver for road tunnels and analysis of perception mechanism","authors":"Can Qin ,&nbsp;Bo Liang ,&nbsp;Jia’an Niu ,&nbsp;Jinghang Xiao ,&nbsp;Shuangkai Zhu ,&nbsp;Haonan Long ,&nbsp;Tao Deng","doi":"10.1016/j.tust.2025.106629","DOIUrl":"10.1016/j.tust.2025.106629","url":null,"abstract":"<div><div>In order to investigate the effects of speed information on the perception ability of drivers in the lighting environments of road tunnels, this study collected various psychophysiological data under different tunnel and driving speed through simulation experiments and real vehicle experiments. Subsequently, the characteristics of psychophysiology changes were analyzed, and a critical speed threshold model for dividing the static perception and the dynamic perception of drivers was constructed based on the ROC curve method, and then the proposed critical speed threshold was validated using second-order clustering method. Furthermore, the underlying mechanisms of static perception and dynamic perception were theoretically analyzed. The results indicate that the critical speed thresholds for dividing static perception and dynamic perception under the conditions of straight-short tunnel, straight-long tunnel, and spiral-short tunnel are 21.3 km/h, 27.2 km/h, and 25.6 km/h, respectively. Under static perception condition, for every 10 km/h increase in driving speed range, the pupil area, heart rate growth rate, visual recognition distance, and reaction time change by 6.5 %, 8.2 %, 4.3 %, and 1.3 %, respectively. Under dynamic perception condition, for every increase of 10 km/h in the driving speed range, the pupil area, heart rate growth rate, visual recognition distance, and reaction time change by 11.1 %, 9.8 %, 10.3 %, and 10.1 %, respectively.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106629"},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785763","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}

{"title":"A state-of-the-art review of underground logistics systems: Research trends, application modes, planning approaches, and future directions","authors":"Wanjie Hu ,&nbsp;Rui Ren ,&nbsp;Jianjun Dong ,&nbsp;Xudong Zhao ,&nbsp;Wan Hong ,&nbsp;Zhilong Chen","doi":"10.1016/j.tust.2025.106641","DOIUrl":"10.1016/j.tust.2025.106641","url":null,"abstract":"<div><div>Underground logistics systems (ULS) encompass a series of transformative technologies and engineering entities designed to enable automated freight transportation within and around cities. Featured by clean energy, all-weather operations, and high capacity, ULS are seen as promising solutions to mitigate “big city diseases” and improve logistics efficiency and sustainability. Previous studies and practice on underground freight transport have produced rich insights and experience for scaling up the system implementation, however, little effort has been paid to frame the state-of-the-art knowledge in this field. This paper performs a systematic literature review to synthesize the concepts, prototypes, and methodologies of ULS that have being explored in recent decades. Our investigation focuses on three aspects: (i) trends in academic publications and key research topics, (ii) potential application areas and modes, and (iii) theories and approaches to system planning, management, and future expansion. The underground system forms and constituents fitting with diverse needs for the intermodal logistics (e.g., port containers) and urban delivery (e.g., metro freight and waste collection pipelines) are summarized. Based on literature findings, we elaborate the critical issues in ULS implementation at strategic, tactical, and operational levels, therein, three major research themes are analyzed, i.e., the interaction between ULS and cities, the strategic agendas of ULS programs, and the decision support tools for ULS planning, design, and operations. Finally, the current knowledge gaps and lessons learned from practice are identified. Novel insights are delivered to the future development of ULS, along with directions for the theoretical innovation in this emerging field.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106641"},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785764","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}

{"title":"Enhancing disaster prevention and structural resilience of tunnels: A study on liquid hydrogen leakage, diffusion, and explosion mitigation","authors":"Qingchun Hu ,&nbsp;Shen Zhang ,&nbsp;Xihong Zhang ,&nbsp;Fan Wang","doi":"10.1016/j.tust.2025.106626","DOIUrl":"10.1016/j.tust.2025.106626","url":null,"abstract":"<div><div>The increasing adoption of liquid hydrogen (LH2) as a clean energy carrier presents significant safety challenges, particularly in confined underground spaces like tunnels. LH2′s unique properties, including high energy density and cryogenic temperatures, amplify the risks of leaks and explosions, which can lead to catastrophic overpressures and extreme temperatures. This study addresses these challenges by investigating the diffusion and explosion behaviour of LH2 leaks in tunnels, providing critical insights into disaster prevention and structural resilience for underground infrastructure. Using advanced numerical simulations validated through theoretical calculations and experimental analogies, the study analyses hydrogen diffusion patterns, overpressure dynamics, and thermal impacts following an LH2 tank rupture. Results show that LH2 explosions generate overpressures exceeding 50 bar and temperatures surpassing 2500 °C , far exceeding the hazards posed by gaseous hydrogen leaks. Mitigation measures, such as suction ventilation and high humidity, significantly reduce explosion impacts, underscoring their value for tunnel safety. This research advances understanding of hydrogen safety in confined spaces, demonstrating the importance of integrating mitigation measures into tunnel design. The findings contribute to disaster prevention strategies, offer insights into optimizing safety protocols, and support the development of resilient infrastructure capable of accommodating hydrogen technologies in a rapidly evolving energy landscape.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106626"},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792670","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}

{"title":"Decision tree analysis of cutter selection for tunnel boring machines: A study of geological conditions and machine types in high-performing TBM projects","authors":"Ebrahim Farrokh ,&nbsp;Davood Lotfi","doi":"10.1016/j.tust.2025.106612","DOIUrl":"10.1016/j.tust.2025.106612","url":null,"abstract":"<div><div>The selection of appropriate cutter types and configurations is crucial for effective Tunnel Boring Machine (TBM) operations. This study introduces a novel decision tree methodology to develop a model for selecting primary cutter types (PCT) and cutter configurations based on actual data from 112 high-performing TBM projects. Key parameters, including geological conditions (Soft Soil, Hard Soil, Coarse Soil, Bouldery Ground, Soft Mixed, Hard Mixed), machine type, diameter, and cutter type, were analyzed. Various decision tree algorithms, including C4.5, CART, SVM, Random Forest, and ensemble methods such as Bagging, AdaBoost, XGBoost, and LightGBM, were applied and evaluated using performance metrics (accuracy, precision, recall, F1-score, and ROC-AUC). Results indicate that CART and KNN algorithms are the best performers, with accuracies of 89.3 % and 88.4 %, respectively, while AdaBoost was the least effective. Decision rules from the CART model reveal geological conditions as the most significant predictor of PCT, followed by machine type and diameter. This study provides a systematic framework for cutter configuration selection in mechanized tunneling, offering practical guidelines for the industry.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":"Article 106612"},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785860","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}

{"title":"Analysis of the hygrothermal conditions of the Vinalopó Medio cave houses (Alicante, Spain)","authors":"Alicia Martínez Antón ,&nbsp;Gracia López Patiño ,&nbsp;Vicente Blanca-Gimenez ,&nbsp;Inmaculada Tormo Clemente","doi":"10.1016/j.tust.2025.106611","DOIUrl":"10.1016/j.tust.2025.106611","url":null,"abstract":"<div><div>Traditional excavated houses possess significant potential for adaptation to contemporary lifestyles while addressing sustainability challenges in construction. In the Vinalopó Medio region of Alicante, Spain, there exists a considerable number of historic cave dwellings that remain inhabited, yet there is a dearth of studies on these structures. It has become essential to investigate the indoor environmental conditions to identify necessary improvements in three selected case studies. The analysis of indoor and outdoor temperature and relative humidity was conducted at various times throughout the year. To draw robust conclusions, a comparative analysis with similar previous studies is presented, utilising Givoni’s psychometric diagram. The findings indicate that the interior conditions of the caves are generally close to acceptable comfort levels, with an average temperature of 20.4 °C and relative humidity of 54.7 %. This suggests that only minimal internal heating is required during the winter months. Furthermore, natural lighting levels were measured in one of the case studies, revealing very low values that necessitate the consideration of systems to enhance the entry of natural light into the interiors. Energy efficiency was assessed by evaluating the heating and cooling energy demands alongside an overall estimation of non-renewable primary energy consumption and carbon dioxide (CO₂) emissions. The results were compared with those of a conventional house built during a similar period in the same area, demonstrating that the energy demand for cooling in the cave houses was reduced by 77.50 % compared to the conventional dwelling. To enhance energy efficiency, indoor comfort and natural light levels, it is proposed that systems be installed that respect the heritage of this excavated architecture. Such interventions would enable the achievement of optimal energy performance, resulting in CO₂ emissions of 5.60 kgCO₂/m² per year and non-renewable primary energy consumption of 32.80 kWh/m² per year.</div></div>","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"162 ","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783390","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}