Article
Engineering, Chemical
Xin Liu, M. Matti Maricq, Douglas A. Dobson
Summary: A new statistical capillary tube model is proposed to predict filtration efficiency and permeability of particulate filters. The model considers the filter media's porous structure as an assembly of curved capillary tubes with a statistical size distribution. Compared with the widely used spherical model, the capillary tube model provides additional permeability prediction and better filtration predictions over a wider range of porosity, including lower porosity of washcoated filters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Construction & Building Technology
Yanzhen Zhu, Honglei Sun, Shanlin Xu, Lingkai Hu, Hongtao Cao, Yuanqiang Cai, Junwei Liu
Summary: This study used computational fluid dynamics and discrete element method (CFD-DEM) to investigate the penetration and filtration behaviors of cement grout in porous media. The validity of a model for the interaction forces of cement particles was confirmed by comparing simulation and experimental results. The size ratio of pore openings to cement particles was found to be a critical factor influencing cement grouting, and grouting pressures had little effect on penetration distance and cement distribution in filtration-prone soil. This study provides new insights into the mechanics of cement grouting in porous media.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jose R. Zapata-Padilla, Cesar A. Juarez-Alvarado, Alejandro Duran-Herrera, Miguel A. Baltazar-Zamora, Bernardo. T. Teran-Torres, Francisco R. Vazquez-Leal, Jose M. Mendoza-Rangel
Summary: In post-tensioned systems, grouts play a vital role in protecting prestressing steel from corrosion by preventing the penetration of harmful compounds. This study evaluated the physical properties of grouts with different percentages of basalt microfiber additions. The incorporation of basalt microfibers improved the drying shrinkage resistance and decreased the permeability to chloride ions compared to the reference mix and commercial dry prepackaged grouts. The optimal grout mix had a 0.10% percentage of basalt microfibers, reducing drying shrinkage by 15.98% and chloride ion permeability by 10.82% compared to the control mix.
Article
Construction & Building Technology
Jianhang Chen, Paul C. Hagan, Serkan Saydam
Summary: This study reveals that the specimen geometry has a significant impact on the performance of cement grouts, with cube specimens showing higher strength and axial strain values but lower elastic modulus compared to cylinder specimens. The results suggest that when analyzing the axial performance of grouts, the specimen geometry should be critically considered.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Geological
Hadi Farhadian, Zeynab Maleki
Summary: This research aims to develop a methodology for classifying the groutability of granular soils using geostatistical methods. A new graph called the groutability classification of granular soil (GCS) chart was developed based on the analysis of soil grain size, cement-based grouts, relative density, fines content, water/cement ratio, and grouting pressure. The proposed method showed a prediction accuracy of 96.7% and can be easily implemented in practical engineering situations. However, further examination is needed to evaluate its applicability in different scenarios.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Energy & Fuels
Krzysztof Senczuk, Aneta Sapinska-Sliwa, Tomasz Kowalski
Summary: Research on utilizing the Earth's heat focuses on the energy accumulated in rock mass, and thermal conductivity is a crucial parameter. This study explores the impact of two different basalt dusts on the thermal conductivity of cement slurry.
Article
Engineering, Civil
Jian Zhao, Guangping Huang, Lin Liao, Wei Victor Liu
Summary: The potential of calcium sulfoaluminate (CSA) cement-based grouts in simulated permafrost environments was evaluated in this study. The hydration and performance of CSA cement-based grouts cured at various temperatures (-10, 0, and 10 degrees C) were investigated using temperature recording, X-ray diffraction (XRD) tests, thermogravimetric analysis (TGA), and unconfined compressive strength (UCS) tests. It was found that CSA cement-based grouts exhibited high early strength and a significant quantity of hydration products were generated at low temperatures, indicating rapid hydration. The strength of the grouts increased continuously with age, making them promising for permafrost applications.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Yongfeng Deng, Li Liu, Songyu Liu, Guoping Zhang, Haijun Sun, Bohao Zhang
Summary: The study found that the vacuum-assisted filtration technique can effectively remove excessive water from high-water content soil, improving the strength of cement-based stabilized clay. The method reduces water content by 5.8-24.7% within the initial 12 hours of cement hydration, leading to a 1.7 and 1.6 times increase in 28-day's strength in laboratory and field tests respectively. Microstructural and chemical analyses reveal that the strength improvement is due to enhanced mixing homogeneity facilitated by higher water content and subsequent filtration.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Murat Mollamahmutoglu, Eyubhan Avci
Summary: The research found that the addition of BA to UFC grouts can extend setting times, reduce viscosity and bleeding, improve flowability of UFC grouts, and decrease grouting pressure for sand specimens; however, it decreases the unconfined compressive strength (UCS) and permeability of UFC grouted sand specimens.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Fei Sha, Shijiu Gu, Yuhong Diao, Peng Liu, Deli Lou, Yan Hu
Summary: This research systematically evaluates the workability and mechanical properties of superplasticized microfine cement grouts with different types of cement and superplasticizers. It investigates various performance indicators, such as rheological behavior, fresh-state properties, mechanical performance, and microstructure, to provide optimal formulation recommendations.
Article
Chemistry, Multidisciplinary
Yintong Huang, Takaaki Kasuga, Masaya Nogi, Hirotaka Koga
Summary: In this study, a transparent and air-permeable nanopaper was prepared through solvent exchange and vacuum filtration. The resulting nanopaper exhibited similar transparency and significantly higher air permeability compared to conventional nanopaper. This research contributes to the development of transparent and air-permeable nanopapers for various applications.
Review
Energy & Fuels
Khaled Z. Abdelgawad, Abdulrauf R. Adebayo, Abubakar Isah, Nasiru S. Muhammed
Summary: The flow dynamics of foam in porous media is an active research area in enhanced oil recovery and aquifer remediation. Foam strength and stability are crucial for its performance, but there are conflicting reports on the correlation between foam strength and the absolute permeability of the media. This review focuses on the commonly used parameters to characterize foam strength and stability, and their correlations with the absolute permeability of reservoir rocks.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Environmental
Shahab Karimifard, Xu Li, Christian Elowsky, Yusong Li
Summary: The study demonstrates that the overall permeability of porous media, flow pathways, and overall/local pressure gradients are highly dependent on biofilm ratio and biofilm permeability when biofilm levels are high and intermediate. However, the impact of biofilm porosity is moderate in these cases. Simplified biofilm geometries can provide reasonable approximations of permeability when biofilm structures are well developed.
Article
Chemistry, Multidisciplinary
Hidenori Takahashi, Shinya Omori, Hideyuki Asada, Hirofumi Fukawa, Yusuke Gotoh, Yoshiyuki Morikawa
Summary: The study found that using cellulose nanofibre (CNF) as an additive in cement treatment for soft ground can reduce problems associated with cement-treated soil and increase flexural strength. However, in the long term, it may weaken the strength development of the soil. Adding CNF results in minimal variation in soil strength but hardly changes permeability.
APPLIED SCIENCES-BASEL
(2021)
Review
Food Science & Technology
Younas Dadmohammadi, Ashim K. Datta
Summary: The complexity of food materials lies in their hygroscopic, amorphous, heterogeneous, and porous structure. Understanding the microstructure and its changes during food processing is crucial for optimizing food processes and ensuring food quality. This review critically assesses the factors that influence microstructure modification in various food processing techniques. It suggests that a porous media framework can provide a deeper understanding of the evolution of food microstructure during processing, aiding in process optimization and the development of novel and hybrid processes.
FOOD REVIEWS INTERNATIONAL
(2022)
Article
Mechanics
Yiming Wang, Yiying Feng, Hai Pu, Qian Yin, Dan Ma, Jiangyu Wu
Summary: This study focuses on the order of a fractional dashpot with 1 < beta < 2, which has the tangible physical meaning of a viscoinertial element. It presents the unique advantages of the creep constitutive model based on fractional calculus in describing creep characteristics and extends the theoretical content of the fractional dashpot with the viscoinertial element (1 < beta < 2).
Article
Engineering, Geological
Zhixiang Song, Junwen Zhang, Shanyong Wang, Xukai Dong, Yang Zhang
Summary: This study investigates the energy evolution characteristics and failure mechanism of deep-bedded sandstone under different loading conditions. The results show that the decay rate of peak strength is significant under certain stress paths. The failure degree under three-stage loading and unloading condition is relatively weak, while the failure degree under conventional loading condition is medium and strong. There is a significant linear relationship among peak elastic energy, peak strength, and peak strain. The accumulated energy in high stress concentration zones continuously impacts low state gradient zones, leading to the expansion and connection of the weakest structural plane and ultimately resulting in failure.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Construction & Building Technology
Yiliang Yu, Xiaohua Bao, Xiangsheng Chen, Jun Shen, Shanyong Wang, Hongzhi Cui
Summary: In this study, a method for enhancing the resilience of a soil-structure system subjected to earthquakes was proposed. The combination of clay replacement and a unilateral drainage diaphragm wall significantly reduced the floating displacement, restrained additional internal forces, and improved the seismic resilience of the underground structure.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Engineering, Geological
Cong Zhang, Zhende Zhu, Shanyong Wang, Chong Shi, Wangyang Li
Summary: This study investigates the seismic failure mechanism of fault-crossing deep tunnels in strong earthquake areas through shaking table tests and numerical simulation tests. The results show that the fault dip has a significant amplification effect on peak acceleration, peak strain, and peak displacement. The fault width and relative distance also amplify parameters such as peak strain and peak acceleration. This research provides guidance for stability analysis and safety assessment of deep underground tunnels in strong earthquake areas.
Article
Engineering, Geological
Kun Du, Ruiyang Bi, Yu Sun, Chengzhi Yang, Shanyong Wang, Guichen Li, Shaofeng Wang
Summary: This study reveals the failure mechanism of rocks under the combined effects of biaxial static stress and dynamic fatigue loads through a series of tests. The biaxial compressive strength of granite increases monotonically with the increase of the intermediate principal stress. The fatigue life of granite is shorter than that in traditional full-section fatigue tests and it increases with the increase of the intermediate principal stress. The failure of rocks under biaxial confinements induced by point/local static or fatigue loads is mainly due to tensile cracks.
Article
Engineering, Geological
Sheng Zhang, Wei Liu, Xinyu Ye, Yu Li, Yifan Shi, Shanyong Wang
Summary: By grouting with a geotextile in an anchor support system, the strength of surrounding soils can be improved, leading to an increase in pull-out force of anchors. A series of filtration and penetration tests were conducted to investigate the improvement of surrounding soils, and microscopic tests were carried out to observe the soil structure before and after grouting. The main conclusions are: (1) The strength of surrounding soils is improved through compaction and slurry infiltration, but the improvement decreases with increased initial degree of compaction. (2) Increasing initial water content reduces the improvement in soil strength due to decreased compaction effect and cohesive substances infiltration, and the infiltrated water during grouting also negatively affects the soil strength improvement. (3) Grouting with a geotextile can improve soil strength regardless of soil type, especially for sandy soils, although the efficiency of slurry infiltration varies. (4) The filtration of geotextile forms a hardened layer at the grout-soil interface, which is beneficial for applications such as capsule-type anchors.
Article
Mining & Mineral Processing
Zhixiang Song, Junwen Zhang, Yang Zhang, Xukai Dong, Shanyong Wang
Summary: A three-stage triaxial loading and unloading stress path was designed and proposed to determine and evaluate the brittleness of deep bedded sandstone. Six brittleness indices were selected and analyzed based on the bedding effect and the effect of confining pressure. The entropy weight method was used to assign weight to the indices and a comprehensive brittleness index Bc was defined and evaluated. The proposed method offers reliable evaluations of the brittleness of deep bedded sandstone in deep engineering practices.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Geological
Lanting Wei, Qiang Xu, Shanyong Wang, Xu Ji
Summary: This paper investigates the influence of slip surface evolution on slope bearing capacity through laboratory model tests using the transparent soil technique. The shear band evolution under different weak planes, loading conditions, and slope geometries is presented and analyzed. The research shows that the morphology of slip surfaces is strongly related to slope bearing capacity, and factors like pre-existing weak planes, loading conditions, and slope geometry have a significant impact on the process of shear band evolution.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Energy & Fuels
Shangxin Feng, Shanyong Wang
Summary: This study aims to establish a theoretical Field Penetration Index (FPI) model for Tunnel Boring Machines (TBM) by analyzing the tool-rock interaction of disc cutters. Through comparison with the polycrystalline diamond compact (PDC) bit, it was found that they have similar rock breakage mechanisms and force equilibrium. Cutting tests on granite, marble, and limestone were conducted to determine the relationship between rotary torque and applied thrust. Based on the test results and tool-rock interaction features, a theoretical FPI model of the disc cutter was derived and verified using field TBM performance data.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Computer Science, Interdisciplinary Applications
Xu Chang, Bofu Gu, Shuren Wang, Shanyong Wang
Summary: Difficulties encountered during installation of cast-in-place piles in deep water bare hard rock include the installment of steel casing and mud leakage during drilling. A novel CIP pile with double steel casings (CIPDSC) was proposed and compared with a CIP pile with one steel casing (CIPASC) through numerical study. The load-displacement curves of the CIPDSC were characterized by five points of debonding, yielding, and compressive yielding of the inner and outer steel casings.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Civil
Sakina Tamassoki, Nik Norsyahariati Nik Daud, Shanyong Wang, Mohammad Jawed Roshan
Summary: This research used coir fiber and activated carbon as additives and waste materials, and lime as a binder to improve the properties of two residual soils. The Finite Element Model (FEM) and random forest (RF) model were employed to predict the California Bearing Ratio (CBR) value, and the results showed that the combination of lime, activated carbon, and coir fiber significantly improved the CBR value in both soils.
TRANSPORTATION GEOTECHNICS
(2023)
Article
Engineering, Marine
Cong Zhang, Zhende Zhu, Lun Dai, Shanyong Wang, Chong Shi, Duan Zhu
Summary: The use of the heavy hammer compaction method improves the bearing characteristics of underwater rubble-mound foundations, ensuring safety and stability in port and coastal engineering projects. This study combines image-recognition technology, 3D laser scanning technology, discrete element numerical simulation, and field testing to analyze the effects of various factors on the bearing characteristics of rubble-mound foundations. The main conclusions are: (1) The load-settlement curve of the foundation has three stages: rapid growth, slow growth, and failure. (2) The ultimate bearing capacity of the foundation is positively correlated with vibration time and amplitude, while riprap particle size and foundation thickness have minimal effects. (3) Settlement increases with increasing compactness when adjusting vibration time, amplitude, and foundation thickness, while factors like riprap particle size, gradation, and vibration frequency have less significant effects on compactness and settlement.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Shi Xu-dong, Feng Guo-rui, Bai Jin-wen, Chun Zhu, Wang Shan-yong, Wang Kai, Cui Bo-qiang, Song Cheng
Summary: The failure patterns and load-AE-DIC response of coal-backfilling (CB) composite structures were investigated through Brazilian splitting tests. The numerical simulations showed that with an increase of interface angle, the failure shifted from Type I to Type I-II pattern, then turned into Type III, and finally became Type II pattern.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Construction & Building Technology
Jiangyu Wu, Hong S. Wong, Hao Zhang, Qian Yin, Hongwen Jing, Dan Ma
Summary: This study explores a method of strengthening cemented rockfill by using well-graded gangue and partially replacing Portland cement with fly ash and a premixed low-alkalinity activator. The research investigated the effects of activator dosage and curing time on the mechanical properties, composition, and microstructure of cemented rockfill. Results show improved performance with low cement content and the use of a low-cost activator. The addition of premixed activator to fly ash enhanced the formation of specific minerals and caused densification of the microstructure. The study reveals an effective and low-cost method for recycling mining wastes and reducing cement.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Energy & Fuels
Dan Ma, Hongyu Duan, Qiang Li, Jiangyu Wu, Wen Zhong, Zhen Huang
Summary: A radial water-rock mixture flow model was established to study the evolution laws of water inrush and rock instability in mining tunnel construction. Through the model, temporal-spatial evolution laws of different hydraulic and mechanical properties were analyzed, and the model's applicability and limitations were discussed by comparing it with existing models.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2023)
Article
Construction & Building Technology
Zhi Ding, Xiao Zhang, Shao-Heng He, Yong-Jie Qi, Cun-Gang Lin
Summary: This study investigates the longitudinal behavior of a shield tunnel by designing and constructing a reduced-size indoor model. The results show that the longitudinal settlement of the tunnel follows a normal distribution, with the maximum settlement occurring at the central ring and increasing linearly with the applied load. Stress concentration typically occurs on the side of the tunnel waist under surcharge, resulting in transverse elliptical deformation of the entire structure.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Lucia Lopez-de-Abajo, Marcos G. Alberti, Jaime C. Galvez
Summary: Assessing and predicting concrete damage is crucial for infrastructure management. This study quantifies gas concentrations in urban tunnels to achieve this goal.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Chao He, Yinghao Cai, Chenqiang Pu, Shunhua Zhou, Honggui Di, Xiaohui Zhang
Summary: This paper investigates the impact of river channel excavation on adjacent metro tunnels and proposes protective measures based on an engineering project in Fuzhou, China. A three-dimensional finite element model is developed to calculate the displacements and distortion of tunnels under different excavation sequences and soil reinforcement measures. Real-time monitoring confirms that the vertical displacements and diametrical distortion of tunnels are primarily caused by the excavation of the river above the tunnels, while horizontal displacements are induced by the excavation next to the tunnels. The study recommends a combination of cement slurry with a portal form and concrete with a plate form for soil reinforcement and tunnel protection.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Yaosheng Liu, Ang Li, Feng Dai, Ruochen Jiang, Yi Liu, Rui Chen
Summary: In this study, a hybrid model based on a multilayer perceptron (MLP) and meta-heuristic algorithms was developed to improve blast performance during tunnel excavation. Precise prediction of post-blasting indicators was important for optimization, and a comparison of meta-heuristic algorithms was conducted to find the most suitable model. The results showed that the developed model effectively reduces overbreak areas and quantitatively analyzes the influence of geological conditions.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Xiang Shen, Yifan Chen, Liqiang Cao, Xiangsheng Chen, Yanbin Fu, Chengyu Hong
Summary: In this paper, a machine learning-based method for predicting the slurry pressure in shield tunnel construction is proposed. By considering the influence of fault fracture zones and setting the formation influence coefficient, the accuracy of the prediction is significantly improved.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Shuying Wang, Zihao Zhou, Xiangcou Zheng, Jiazheng Zhong, Tengyue Zheng, Changhao Qi
Summary: A real-time assessment and monitoring approach based on laser scanning technology and point cloud data analysis was proposed to address the hysteresis in assessing the workability of conditioned soils and the inefficiency in estimating the soil volume flow rate in tunnelling practice. The approach was successfully applied in identifying the workability of conditioned soil and its discharge rate in the EPB shield tunnelling project.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Peng Jiang, Benchao Liu, Yuting Tang, Zhengyu Liu, Yonghao Pang
Summary: This study introduces a novel deep learning-based electrical method that jointly inverses resistivity and chargeability to estimate water-bearing structures and water volume. Compared with traditional linear inversion methods, the proposed method demonstrates superiority in locating and delineating anomalous bodies, reducing solution multiplicity.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Haoyu Mao, Nuwen Xu, Zhong Zhou, Chun Sha, Peiwei Xiao, Biao Li
Summary: The study focuses on the delineation of rock mass damage zones and stability analysis of underground powerhouse in Lianghekou hydropower station. ESG monitoring system is used to monitor the inner micro-fracture activity of surrounding rock mass in real-time. Engineering analogy method is adopted to forecast the deformation period of surrounding rock mass and analyze the variation characteristics of seismic source parameters. The research results provide references for similar deep underground excavation engineering in terms of design and construction.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Junling Qiu, Dedi Liu, Kai Zhao, Jinxing Lai, Xiuling Wang, Zhichao Wang, Tong Liu
Summary: This study focuses on the construction surface cracks of large cross-section tunnels in loess strata of China. The mechanism of surface crack formation is analyzed, and factors such as settlement deformation, construction scheme, and surrounding soil environment are identified as the main contributors. Numerical simulations were conducted to gain a deeper understanding of the influence of factors on surface cracks in loess tunnel construction. Specific measures for prevention and treatment of construction surface cracks are proposed to provide new ideas for surface crack control in loess tunnels.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Ting Shang, Jiaxin Lu, Ying Luo, Song Wang, Zhengyu He, Aobo Wang
Summary: The study reveals significant variations in car-following behavior across different types of tunnels and consecutive sections of the same tunnel. As tunnel length increases, the driving stability of following vehicles decreases, but the level of driving safety risk is not positively correlated with tunnel length. Significant vehicle trajectory oscillation is observed within the inner sections of long and extra-long tunnels, and a significant relationship between the acceleration of following vehicles and the location within the tunnel section is found.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Rusi Zeng, Zhongwei Shen, Jun Luo
Summary: The urban underground complexes (UUCs) in China have been effective in solving urban problems, but users have expressed dissatisfaction with the internal physical environment. Personal characteristics and environmental factors play significant roles in determining users' satisfaction.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Gabriel Lehmann, Heiko Kaeling, Sebastian Hoch, Kurosch Thuro
Summary: Analysing and predicting the advance rate of a tunnel boring machine (TBM) in hard rock is important for tunnelling projects. This study focuses on small-diameter TBMs and their unique characteristics, such as insufficient geotechnical information and special machine designs. A database of 37 projects with 70 geotechnically homogeneous areas is compiled to investigate the performance of small-diameter TBMs. The analysis shows that segment lining TBMs have higher penetration rates, and new approaches for the penetration prediction of pipe jacking machines in hard rock are proposed.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Ting Ren, Ming Qiao, Jon Roberts, Jennifer Hines, Yang-Wai Chow, Wei Zong, Adrian Sugden, Mark Shepherd, Matthew Farrelly, Gareth Kennedy, Faisal Hai, Willy Susilo
Summary: Long-term exposure to coal and silica dust during underground tunnelling operations is a growing concern. To bridge the gap between knowledge in dust exposure monitoring and frontline workers, a virtual reality educational tool was developed to visualize ventilation and dust flow characteristics. This tool allows workers to better understand decision-making and best practices for dust controls.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Dong Lin, Zhipeng Zhou, Miaocheng Weng, Wout Broere, Jianqiang Cui
Summary: Metro systems play a vital role in the transportation, economic, environmental and social aspects of cities. The uncertainties in construction, passenger comfort and safety, as well as efficiency and reliability of the metro system, have been widely studied. Metro systems influence urban development and have a positive impact on housing prices, public health, and environmental quality. Further research is needed to fill the research gaps and make recommendations for future studies.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Wei Yu, Bo Wang, Xin Zi, Jie Dong
Summary: In this study, a whole-process analytical theory for the coupled deformation of deep circular tunnel surrounding rock and prestressed yielding anchor bolt (cable) system is derived and validated through numerical simulations. The results show that anchor bolts (cables) can significantly reduce the convergence of surrounding rock, and factors such as support timing and anchor cable length have important effects on the support effectiveness.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)