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Статті в журналах з теми "Twin tunneling"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Mangi, N., D. K. Bangwar, H. Karira, S. Kalhoro, and G. R. Siddiqui. "Parametric Study of Pile Response to Side-by-Side Twin Tunneling in Stiff Clay." Engineering, Technology & Applied Science Research 10, no. 2 (2020): 5361–66. http://dx.doi.org/10.48084/etasr.3290.

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Анотація:

A three dimensional coupled-consolidation numerical parametric study was carried out in order to gain new insight of single pile response to side-by-side twin tunneling in saturated stiff clay. An advanced hypo plasticity (clay) constitutive model with small-strain stiffness was adopted. The effects of relative to the pile tunnel depths were investigated by simulating the twin tunnels near the pile at various depths of tunnels, namely near the pile shaft, adjacent to the pile toe, and below the pile toe. It was found that the second tunneling in each case resulted in a larger settlement than t

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2

Mangi, N., D. K. Bangwar, H. Karira, S. Kalhoro, and G. R. Siddiqui. "Parametric Study of Pile Response to Side-by-Side Twin Tunneling in Stiff Clay." Engineering, Technology & Applied Science Research 10, no. 2 (2020): 5361–66. https://doi.org/10.5281/zenodo.3748288.

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Анотація:

A three dimensional coupled-consolidation numerical parametric study was carried out in order to gain new insight of single pile response to side-by-side twin tunneling in saturated stiff clay. An advanced hypo plasticity (clay) constitutive model with small-strain stiffness was adopted. The effects of relative to the pile tunnel depths were investigated by simulating the twin tunnels near the pile at various depths of tunnels, namely near the pile shaft, adjacent to the pile toe, and below the pile toe. It was found that the second tunneling in each case resulted in a larger settlement than t

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3

Wang, Jinquan, Juntong An, Shenyi Zhang, et al. "Numerical Investigation and Prediction of Side-By-Side Tunneling Effects on Buried Pipelines." Sustainability 15, no. 1 (2022): 353. http://dx.doi.org/10.3390/su15010353.

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With the fast development of underground space engineering, it is inevitable for buried pipelines to be crossed by twin tunnels. Previous studies mainly focused on the single-tunneling effects on pipelines. To emphasize the twin-tunneling effects on buried pipelines, we first examined the effectiveness of the ground settlement prediction method under twin-tunneling conditions. Then, the estimated ground settlement boundary condition was applied to the beam-on-spring finite element model. The numerical results show that with the decrease in tunnel depth and twin tunnel space, the values and pos

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4

Yu, Shao, Riyan Lan, Junhui Luo, Zhibo Duan, and Shaokun Ma. "An Investigation of Effects and Safety of Pipelines due to Twin Tunneling." Advances in Civil Engineering 2021 (May 27, 2021): 1–15. http://dx.doi.org/10.1155/2021/6694683.

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To efficiently and accurately predict the effects of twin tunneling on adjacent buried pipelines, the effects of upward and downward relative pipeline-soil interactions were considered. A series of numerical parametric studies encompassing 8640 conditions were performed to investigate the responses of a pipeline to twin tunneling. Based on the dimensionless analysis and normalized calculation results, the concept of equivalent relative pipeline-soil stiffness was proposed. Additionally, expressions for the relative pipeline-soil stiffness and relative pipeline curvature and for the relative pi

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5

Tsukamoto, Shigemi, Byron Siu, and Nobuyuki Nakagiri. "Twin‐probe scanning tunneling microscope." Review of Scientific Instruments 62, no. 7 (1991): 1767–71. http://dx.doi.org/10.1063/1.1142419.

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6

Latif, Kamran, Abubakar Sharafat, and Jongwon Seo. "Digital Twin-Driven Framework for TBM Performance Prediction, Visualization, and Monitoring through Machine Learning." Applied Sciences 13, no. 20 (2023): 11435. http://dx.doi.org/10.3390/app132011435.

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Анотація:

The rapid development in underground infrastructure is encouraging faster and more modern ways, such as TBM tunneling, to meet the needs of the world. However, tunneling activities generate complex and heterogeneous data, which makes it difficult to visualize the performance of a project. Advancements in information technology, such as digital twins and machine learning, provide platforms for digital demonstration, visualization, and system performance monitoring of such data. Therefore, this study proposes a digital twin-driven framework for TBM performance prediction through machine learning

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7

Ayasrah, Mo'men. "Response of Existing Pile Groups Due to Twin Tunneling: A Numerical Study." Engineering, Technology & Applied Science Research 15, no. 3 (2025): 23309–16. https://doi.org/10.48084/etasr.10689.

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Анотація:

Twin shield tunneling operations frequently cross pile group foundations at close intervals in densely populated areas. The relationship between recently built tunnels and pre-existing pile foundations has been extensively studied, but the impact of various twin-parallel shield tunneling construction sequences on pile groups has seldom ever been discussed. This work investigated the complex interrelationships of soil, pile group foundations, and twin tunnel excavation. The Tunnel Boring Machine (TBM) approach and three-dimensional Finite Element Analysis (FEA) were deployed using Midas GTS-NX

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8

Soomro, M. A., M. A. Keerio, M. A. Soomro, and D. K. Bangwar. "3D Centrifuge Modeling of the Effect of Twin Tunneling to an Existing Pile Group." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 2030–40. http://dx.doi.org/10.48084/etasr.1393.

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Анотація:

In densely built urban areas, it is inevitable that tunnels will be constructed near existing pile groups. The bearing capacity of a pile group depends on shear stress along the soil-pile interface and normal stress underneath the pile toe while the two would be adversely affected by the unloading process of tunneling. Although extensive studies have been conducted to investigate the effects of tunnel construction on existing single piles, the influence of twin tunnel advancement on an existing pile group is merely reported in the literature. In this study, a series of three-dimensional centri

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9

Soomro, M. A., M. A. Keerio, M. A. Soomro, and D. K. Bangwar. "3D Centrifuge Modeling of the Effect of Twin Tunneling to an Existing Pile Group." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 2030–40. https://doi.org/10.5281/zenodo.1037230.

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Анотація:

In densely built urban areas, it is inevitable that tunnels will be constructed near existing pile groups. The bearing capacity of a pile group depends on shear stress along the soil-pile interface and normal stress underneath the pile toe while the two would be adversely affected by the unloading process of tunneling. Although extensive studies have been conducted to investigate the effects of tunnel construction on existing single piles, the influence of twin tunnel advancement on an existing pile group is merely reported in the literature. In this study, a series of three-dimensional centri

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10

Huang, Minghua, Zhenglin Zhou, Zhenggang Hu, Keping Wang, and Suhua Zhou. "Analysis of the Buried Pipeline Response Induced by Twin Tunneling Using the Generalized Hermite Spectral Method." Sustainability 15, no. 13 (2023): 9949. http://dx.doi.org/10.3390/su15139949.

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Анотація:

For the sustainability of economic, ecological and social development, the safety of infrastructure, including buried pipelines, is extremely important. Undercrossing tunneling can compromise the safety of buried pipelines because of deformations, cracks and dislocations, which can result in wasted resources, environmental pollution and economic losses. Therefore, it is important to assess the pipeline response accurately during tunnel excavation. This paper proposes a generalized Hermite spectral solution to estimate the pipeline response induced by twin tunneling. The proposed solution is fo

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11

Sheng, Minghong, Jingjing Gao, Panpan Guo, Rihong Cao, and Yixian Wang. "Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays." Geofluids 2021 (July 6, 2021): 1–15. http://dx.doi.org/10.1155/2021/2373456.

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This paper investigates the temporal-spatial characteristics of ground displacements as well as vertical and horizontal displacements and axial forces in existing piles induced by twin shield tunneling in clays. To that end, a case study and three-dimensional (3D) finite element (FE) analysis were performed. Based on the in situ monitoring data from the presented twin tunneling case history with existing piles beneath, the adopted 3D FE method was validated to be competent to yield reasonable simulation results. The validated 3D FE method was then used to analyze the effects of the distance be

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12

Hao, Xuedi, Hanhui Lin, Han Jia, et al. "A Method for Building a Mixed-Reality Digital Twin of a Roadheader Monitoring System." Applied Sciences 14, no. 24 (2024): 11582. https://doi.org/10.3390/app142411582.

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The working environment of the coal mine boom-type roadheader is harsh with large blind areas and numerous safety hazards for operators. Traditional on-site or remote control methods do not meet the requirements for intelligent tunneling. This paper proposes a digital twin monitoring system of an EBZ-type roadheader based on mixed reality (MR). First, the system integrates a five-dimensional digital twin model to establish the boom-type roadheader digital twin monitoring system. Second, the Unity3D software (v2020.3.25f1c1) and the MR Hololens (v22621.1133 produced by Microsoft) are used to bu

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13

Asker, Kamel, Mohamed Bahr, Ahmed El-Attar, and Mohamed Fouad. "Minimizing of tunneling effect on existing infrastructure in Egypt." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 30, no. 1 (2021): 3–15. http://dx.doi.org/10.22630/pniks.2021.30.1.1.

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A set of parametric studies by using the Abaqus software is conducting to investigate the effective method to seal the CWO sewer from the tunneling process. These methods include: (i) two deep grouted walls, (ii) adjacent slurry piles, (iii) bored reinforced concrete piles assisted with slurry piles, and (iv) grouted block confining the twin tunnel wall. Based on the results of parametric studies. Most of the protective studied technique was effective on reducing the tunneling effect on the ground movements.

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14

Huang, Kan, Yiwei Sun, Xianqiang Huang, Yujian Li, Meng Jiang, and Runing Liu. "Effects of Different Construction Sequences on Ground Surface Settlement and Displacement of Single Long Pile due to Twin Paralleled Shield Tunneling." Advances in Civil Engineering 2021 (July 31, 2021): 1–14. http://dx.doi.org/10.1155/2021/5559233.

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Анотація:

Shield tunneling activities inevitably pass through pile foundations at close distance in densely urban areas. Various studies have investigated the interaction between newly constructed tunnels and existing pile foundations. However, the influence of different construction sequences of twin paralleled shield tunneling on single long pile is seldom considered. A case was found in the project of Changsha Metro Line 5, where the twin paralleled tunnels were constructed near the Wanjiali Viaduct piles. A three-dimensional finite element model was established to analyze the pier settlement, ground

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15

Huang, Junzhou, Jizhixian Liu, Kai Guo, et al. "Evaluation Method of the Impact of Twin Shield Tunneling Construction on Elevated Bridges: Case Study." Symmetry 16, no. 9 (2024): 1113. http://dx.doi.org/10.3390/sym16091113.

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Анотація:

In urban metro construction, shield tunneling often needs to pass through building and bridge pile foundations, potentially affecting the stability of existing structures. Therefore, accurately assessing the impact of shield tunneling on bridges and buildings is crucial. This study presents a comprehensive prediction method combining numerical simulation and empirical formulas, taking the underpass project of the Shijiazhuang–Wuhan High-Speed Railway Bridge by Zhengzhou Metro Line 5 as a case study. Three-dimensional numerical model calculations were performed using finite element software to

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16

Jin, Bao, Hai Yun Zhao, and Yang Liu. "Investigation of the Optimal Construction of the One-Cave Tunnel with Double-Arch Section." Key Engineering Materials 574 (September 2013): 85–94. http://dx.doi.org/10.4028/www.scientific.net/kem.574.85.

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Анотація:

This paper investigated an optimal strategy of constructing the tunnel with double-arch section, which the one-cave benching tunneling construction and twin side heading construction were replaced by the center drift combining CRD method and the center drift combining twin side heading method. And the proposed measure was applied to construct the back-turning section of the Clover Park Station which was located in metro line 2 Nanjing, China. The economy and practicality of the proposed method was demonstrated by the application to this practical tunnel

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17

Goss, Christoph Michael. "Ground conditioning for earth pressure balance machine tunneling." Environmental and Engineering Geoscience 7, no. 1 (2001): 3–11. http://dx.doi.org/10.2113/gseegeosci.7.1.3.

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Abstract The objective of this paper is to provide insight to the application of state-of-the-art ground modification technology for Earth Pressure Balance (EPB) soft ground tunneling. The paper reflects data from a wide array of sources including conference proceedings, trade journal articles, manufacturer publications, books and personal experience. The paper first introduces the concept of soft ground tunneling and then discusses the Earth Pressure Balance Tunnel Boring Machine method. The bulk of the paper is spent discussing ground-conditioning agents, particularly foam. Use of, quantitie

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18

Cheng, Qiang, Shiguo Xiao, Tianxiang Liu, Tingjun Chen, Shaohong Li, and Anhui Wei. "Twin tunneling–induced deep-seated landslide in layered sedimentary rocks." Bulletin of Engineering Geology and the Environment 80, no. 12 (2021): 9071–88. http://dx.doi.org/10.1007/s10064-021-02482-1.

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19

Li, Xi An, Rong Jian Li, Gao Feng Che, Wen Zheng, and Liang Li. "On the Stability of Unsaturated Loess Slope under Tunneling Condition." Advanced Materials Research 233-235 (May 2011): 2678–81. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2678.

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As a unique mode of soil erosion, loess cavities often act as the critical factor to the stability of the highway slopes of unsaturated loess. In this paper, the unsaturated loess slope stabilities are comparatively studied in different cases through the developed program of the strength reduction FEM, such as loess cavities in different position, single- & twin cavities, occurrence and loss of matric suction etc. The work done in this paper revealed the mechanism how the tunneling and the matric suction have effect on the stability of unsaturated loess slope to some extent. The results no

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20

Rößler, Sahana, Cevriye Koz, Zhaosheng Wang, et al. "Two types of magnetic shape-memory effects from twinned microstructure and magneto-structural coupling in Fe1+yTe." Proceedings of the National Academy of Sciences 116, no. 34 (2019): 16697–702. http://dx.doi.org/10.1073/pnas.1905271116.

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Анотація:

A detailed experimental investigation of Fe1+yTe (y = 0.11, 0.12) using pulsed magnetic fields up to 60 T confirms remarkable magnetic shape-memory (MSM) effects. These effects result from magnetoelastic transformation processes in the low-temperature antiferromagnetic state of these materials. The observation of modulated and finely twinned microstructure at the nanoscale through scanning tunneling microscopy establishes a behavior similar to that of thermoelastic martensite. We identified the observed, elegant hierarchical twinning pattern of monoclinic crystallographic domains as an ideal r

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21

Li, Jianye, Qian Fang, Xiang Liu, Jianming Du, Gan Wang, and Jun Wang. "Mechanical Behaviors of Existing Large-Diameter Tunnel Induced by Horseshoe-Shaped Undercrossing Twin Tunnels in Gravel." Applied Sciences 12, no. 14 (2022): 7344. http://dx.doi.org/10.3390/app12147344.

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This article investigates and presents a case study on the Beijing Subway Line 12 excavation beneath the existing Qinghuayuan Tunnel. The composite pre-reinforcement technique was used in conjunction with the shallow tunneling method to control the distortion of the existing large-diameter tunnel. When building twin tunnels underneath, this strategy considerably decreased the impact on the existing large-diameter tunnel. To systematically study the mechanical response of the existing large-diameter tunnel, a variety of sensors was embedded in the prefabricated segments just above the new twin

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22

Wijaya, Wellyanto, Paulus Pramono Rahardjo, and Aswin Lim. "Investigation of Twin Tunnel Deformation with Umbrella Grouting Protection & NATM Tunneling using 3D Finite Element: Case Study Cisumdawu Tunnel." UKaRsT 5, no. 2 (2021): 252. http://dx.doi.org/10.30737/ukarst.v5i2.1977.

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Анотація:

Cisumdawu Tunnel is a twin tunnel 472 m long located in Sumedang. Twin tunnel construction can cause additional ground settlement and tunnel deformation. The tunnel construction method used is the New Austrian Tunneling Method (NATM) and umbrella grouting protection system. The principle of NATM is to maximize surrounding soil capacity to support its weight and balance the stresses around the tunnel. Investigation of tunnel deformation is important to know tunnel structure behavior and avoid possible failure. This research aims to know tunnel deformation and the effect of twin tunnel construct

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23

Seghateh Mojtahedi, Alireza, and Ali Nabizadeh. "A numerical approach to evaluating the asymmetric ground settlement response to twin-tunnel asynchronous excavation." Soils and Rocks 45, no. 2 (2022): 1–10. http://dx.doi.org/10.28927/sr.2022.071021.

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Due to the importance of surface and subsurface settlements to prevent damages to building foundations and sensitive structures in the urban cities, in this study, the ABAQUS finite element software has used to conduct a series of numerical modeling analysis on ground surface settlement caused from the asynchronous excavation of twin-tunnel. The effects of tunnel diameter, center-to-center tunnel spacing, and tunnel depth are discussed in detail and the shape of the surface settlement curves is also plotted. The numerical modeling has been verified by the results of three sequential twin-tunne

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24

Gan, Xiaolu, Jianlin Yu, Xiaonan Gong, and Min Zhu. "Probabilistic analysis for twin tunneling-induced longitudinal responses of existing shield tunnel." Tunnelling and Underground Space Technology 120 (February 2022): 104317. http://dx.doi.org/10.1016/j.tust.2021.104317.

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25

Liang, J. Q., H. J. W. Müller-Kirsten, Jian-Ge Zhou, F. Zimmerschied, and F. C. Pu. "Quantum tunneling of spin particles in periodic potentials with asymmetric twin barriers." Physics Letters B 393, no. 3-4 (1997): 368–74. http://dx.doi.org/10.1016/s0370-2693(96)01628-0.

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26

Wang, Kezhong, Qianjiang Zheng, and Maowen Hang. "Predictive Model for Deformation of Adjacent Pipelines Caused by Tunnel Boring in Twin-Lane Tunnels in Soft Ground Layers." Applied Sciences 15, no. 2 (2025): 758. https://doi.org/10.3390/app15020758.

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To create a discretized prediction model for the deformation of an adjacent pipeline, the pipeline structure is discretized, the differential equations governing the longitudinal deformation of the pipeline are inferred, and the displacement expressions and the solution methods of the virtual nodes of each unit are provided after discretization. This approach is based on the Pasternak foundation beam theory. It aims to address the issue of the difficulty in predicting the deformation of the adjacent pipeline caused by shield tunneling in a saturated soft ground layer in the Yangtze River Delta

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27

Yang, Xu, Mingquan Zhou, Chao Chen, Weiwei Zhong, and Fen Yue. "Semi Solid MR Coal Mine Tunneling Machine Operation Training System." Frontiers in Computing and Intelligent Systems 8, no. 2 (2024): 13–17. http://dx.doi.org/10.54097/08cn4211.

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At present, the coal mining industry is increasingly focusing on improving safety and operational efficiency, which has led to an increasing demand for training of coal mine excavation equipment operators, and the corresponding training costs have also increased. To alleviate these pressures, researching a training program for cantilever tunneling machines based on digital twin technology has become an innovative initiative. This article constructs a virtual environment for underground tunnels by combining mixed reality technology with physical entities. The operator commands the activities of

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28

Shi, Xin, Chuanxin Rong, Houliang Wang, Linzhao Cui, Haibing Cai, and Bin Wang. "Analytical Study of Soil Displacement Induced by Twin Shield Tunneling in Semi-Infinite Viscoelastic Ground." Advances in Civil Engineering 2020 (December 5, 2020): 1–20. http://dx.doi.org/10.1155/2020/8839010.

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Effective measures are needed to strictly control soil displacement caused during the process of shield construction excavation for urban subway tunnels. When calculating the displacement of soil caused by loading or unloading, many previous analytical studies have assumed that the soil was a linear elastic body and ignored the viscosity of the soil. In this study, the Boltzmann viscoelastic model and the Mindlin basic solution were combined to consider the effects of the additional support pressures, the shield shell frictions, the grouting pressures, and the ground loss, and a three-dimensio

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29

Xie, Sen, Yujie Ouyang, Wei Liu, et al. "Temperature-Driven Twin Structure Formation and Electronic Structure of Epitaxially Grown Mg3Sb2 Films on Mismatched Substrates." Nanomaterials 12, no. 24 (2022): 4429. http://dx.doi.org/10.3390/nano12244429.

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Mg3Sb2-based compounds are one type of important room-temperature thermoelectric materials and the appropriate candidate of type-II nodal line semimetals. In Mg3Sb2-based films, compelling research topics such as dimensionality reduction and topological states rely on the controllable preparation of films with high crystallinity, which remains a big challenge. In this work, high quality Mg3Sb2 films are successfully grown on mismatched substrates of sapphire (000l), while the temperature-driven twin structure evolution and characteristics of the electronic structure are revealed in the as-grow

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30

Mirhabibi, A., and A. Soroush. "Effects of building three-dimensional modeling type on twin tunneling-induced ground settlement." Tunnelling and Underground Space Technology 38 (September 2013): 224–34. http://dx.doi.org/10.1016/j.tust.2013.07.003.

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31

Zhang, Zhiguo, Maosong Huang, Chengping Zhang, Kangming Jiang, Zhiwei Wang, and Xiaoguang Xi. "Complex Variable Solution for Twin Tunneling-Induced Ground Movements Considering Nonuniform Convergence Pattern." International Journal of Geomechanics 20, no. 6 (2020): 04020060. http://dx.doi.org/10.1061/(asce)gm.1943-5622.0001700.

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32

Navlakha, Nupur, Jyi-Tsong Lin, and Abhinav Kranti. "Improved Retention Time in Twin Gate 1T DRAM With Tunneling Based Read Mechanism." IEEE Electron Device Letters 37, no. 9 (2016): 1127–30. http://dx.doi.org/10.1109/led.2016.2593700.

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33

Liu, Linan, Wendy Zhou, and Marte Gutierrez. "Mapping Tunneling-Induced Uneven Ground Subsidence Using Sentinel-1 SAR Interferometry: A Twin-Tunnel Case Study of Downtown Los Angeles, USA." Remote Sensing 15, no. 1 (2022): 202. http://dx.doi.org/10.3390/rs15010202.

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Synthetic Aperture Radar (SAR) interferometry is a formidable technique to monitor surface deformation with a millimeter detection resolution. This study applies the Persistent Scatter-Interferometric Synthetic Aperture Radar (PSInSARTM) technique to measure ground subsidence related to a twin-tunnel excavation in downtown Los Angeles, USA. The PSInSARTM technique is suitable for urban settings because urban areas have strong reflectors. The twin tunnels in downtown Los Angeles were excavated beneath a densely urbanized area with variable overburden depths. In practice, tunneling-induced groun

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34

Hong Lam, Dang, Dang Thi Quynh Chi, and Nguyen Ba Dong. "A practical approach for modeling twin-tunnel excavation in Ho chi minh city." Transport and Communications Science Journal 73, no. 7 (2022): 724–34. http://dx.doi.org/10.47869/tcsj.73.7.6.

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The prediction of ground settlement under tunnel excavation is still challenge. Almost engineer uses Mohr-Coulomb model in practice due to the conventional geotechnical investigation data. This paper describes the study of tunnel lining behaviors and ground surface settlement under tunneling process with a typical case study of twin tunnels excavation in Ho Chi Minh city, Vietnam. The advanced material model namely Hardening Soil model is used to investigate the proposing twin-tunnel with numerical approach. The internal forces of tunnel lining and ground settlement, which achieved from Harden

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35

Chen, Chao, Yanyun Lu, Bo Wu, and Linhai Lu. "Digital Twin-Based and Knowledge Graph-Enhanced Emergency Response in Urban Infrastructure Construction." Applied Sciences 15, no. 11 (2025): 6009. https://doi.org/10.3390/app15116009.

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Анотація:

Urban infrastructure construction poses significant risks to surrounding the infrastructure due to ground settlement, structural disturbances, and underground utility disruptions. Traditional risk assessment methods often rely on static models and experience-based decision-making, limiting their ability to adapt to dynamic construction conditions. This study proposes an integrated framework combining digital twin and knowledge graph technologies to enhance real-time risk assessment and emergency response in tunnel construction. The digital twin continuously integrates real-time monitoring data

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36

Li, Shaohua, Pengfei Li, Mingju Zhang, and Yi Liu. "Influence of Approaching Excavation on Adjacent Segments for Twin Tunnels." Applied Sciences 10, no. 1 (2019): 98. http://dx.doi.org/10.3390/app10010098.

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This paper aims at influence analysis of approaching excavation on adjacent segments for twin tunnels with variable clear spacing located in Beijing, China. A series of numerical simulations have been conducted to investigate the influence of approaching excavation on ground displacements and mechanical responses of segments. What’s more, on-site monitoring was conducted at the position of the minimum spacing between the twin tunnels. It is found that the deformation of the measured segment presents a pronounced asymmetric ovalization when the second tunnel approaches the measured cross-sectio

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37

Yun, Ji-seok, Han-eol Kim, and Han-kyu Yoo. "Three-Dimensional Modeling and Analysis of Ground Settlement Due to Twin Tunneling Using GIS." Sustainability 16, no. 14 (2024): 5891. http://dx.doi.org/10.3390/su16145891.

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Ground settlement occurs because of the surrounding ground behavior during tunnel excavation. A high chance of its occurrence could cause the collapse of buildings; therefore, the accurate prediction and assessment of ground settlement are necessary when structures are concentrated in urban regions. This study leverages Geographic Information Systems (GIS) and 3D modeling to evaluate the effects of tunnel excavation on the ground settlement and damage of buildings along the Mandeok–Centum underground highway in Busan. It integrates the field topography with building data to simulate and visual

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38

Li, Jianbin, Junguang Huang, Huawei Tong, and Shankai Zhang. "Reliability Analysis of Safety Assessment of Buildings above Twin Shield Tunnels Based on Random Field Theory." Mathematical Problems in Engineering 2022 (May 23, 2022): 1–17. http://dx.doi.org/10.1155/2022/2252580.

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Aiming at the problem of deformation of adjacent masonry structures caused by the surrounding soil disturbance in the construction of twin shield tunnels, taking the spatial variability of soil parameters as the breakthrough point and the surface deformation mode as the basis, a program is compiled to search the position of characteristic points of the settlement curve, and a safety assessment method of masonry buildings above twin tunnels based on the random field theory is obtained. According to the reliability theory, the concept of the potential damage zone is defined. The probability that

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39

Zhang, Xuepeng, Yujing Jiang, Yue Cai, et al. "A Simplified Method for Predicting Tunneling-Induced Ground Movement considering Nonuniform Deformation Boundary." Shock and Vibration 2022 (January 13, 2022): 1–11. http://dx.doi.org/10.1155/2022/6289303.

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Stochastic medium (SM) theory is a practical method in ground settlement prediction, while its nonintegrable double integral form makes the solution process complicated. A simplified analytical solution based on the SM theory is developed to predict the ground movement in tunneling excavation. With the simplified solution, the ground movement for single tunnel and twin tunnels could be predicted based on the gap parameter G and influence angle β. A feasible approach is developed to estimate these two parameters using the maximum ground settlement Smax and tunnel design parameters, including tu

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40

Shi, Xin, Yi Cao, Chuanxin Rong, Gangjian An, Houliang Wang, and Linzhao Cui. "Influence of Pipeline Leakage on the Ground Settlement around the Tunnel during Shield Tunneling." Sustainability 14, no. 24 (2022): 16802. http://dx.doi.org/10.3390/su142416802.

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Shield tunneling is widely used in urban subway tunnel construction. Old urban underground pipelines generally have small leakages that are difficult to find. The water leakage significantly reduces the stability of the stratum, posing a threat to the safety of tunnel shield construction. Therefore, this study established 2D and 3D calculation models for analyzing the law of the leakage diffusion in the ground under water pressure, and the influences of the pipeline leakage range and leakage length on the changes in ground settlement during shield tunneling. The 2D model calculation results sh

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41

Della Ragione, Gianluigi, Alfredo Rocca, Daniele Perissin, and Emilio Bilotta. "Volume Loss Assessment with MT-InSAR during Tunnel Construction in the City of Naples (Italy)." Remote Sensing 15, no. 10 (2023): 2555. http://dx.doi.org/10.3390/rs15102555.

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The construction of tunnels in urban areas can affect the nearby existing infrastructures and buildings, as shallow excavations induce movements up to the ground surface. An important parameter to be monitored during the excavation is the volume loss, which plays a crucial role in determining the ground movements at the surface. InSAR satellite monitoring has the potential to detect ground movements at the millimetric scale on a vast area for tunneling applications. In the present study, the Multi-Temporal InSAR (MT-InSAR) technique, based on the persistent scattering method, is used to retrie

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42

Davarpanah, Seyed Morteza, Mostafa Sharifzadeh, Javad Sattarvand, and Samad Narimani. "Evaluation of Building Displacement Induced By EPB Tunneling Through GPS-GNSS Monitoring System and Back Analysis Technique (Tabriz Subway Twin Tunnels)." Civil Engineering Journal 2, no. 6 (2016): 270–85. http://dx.doi.org/10.28991/cej-2016-00000032.

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One of the main aspects of tunneling in urban areas is controlling the amount of settlement that might cause some damage to the structures and infrastructures. In this paper, the novel displacement monitoring system called Global Positioning System - Global Navigation Satellite System (GPS-GNSS) has been applied to monitor the building displacement .One of the most important features of this approach is that this system provides three dimensional displacement behavior of the building. Besides, in order to fulfill the purpose of accuracy, the amount of settlement induced by Earth Pressure Balan

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43

Han, DongChang, DeokJin Jang, JaeYoon Lee, Seongjae Cho, and IlHwan Cho. "Investigation of Modified 1T DRAM with Twin Gate Tunneling Field Effect Transistor for Improved Retention Characteristics." JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE 20, no. 2 (2020): 145–50. http://dx.doi.org/10.5573/jsts.2020.20.2.145.

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44

Franza, Andrea, and Giulia M. B. Viggiani. "Role of Shear Deformability on the Response of Tunnels and Pipelines to Single and Twin Tunneling." Journal of Geotechnical and Geoenvironmental Engineering 147, no. 12 (2021): 04021145. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0002672.

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45

Gong, Chenjie, Wenqi Ding, and Dongwu Xie. "Twin EPB tunneling-induced deformation and assessment of a historical masonry building on Shanghai soft clay." Tunnelling and Underground Space Technology 98 (April 2020): 103300. http://dx.doi.org/10.1016/j.tust.2020.103300.

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46

Ma, Shaokun, Ying Liu, Xilin Lv, Yu Shao, and Ye Feng. "Settlement and Load Transfer Mechanism of Pipeline Due to Twin Stacked Tunneling with Different Construction Sequences." KSCE Journal of Civil Engineering 22, no. 10 (2018): 3810–17. http://dx.doi.org/10.1007/s12205-018-0302-5.

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47

KAMIMURA, Masato, Yutaka NASHIMOTO, Takashi SUGIYAMA, Koichi AOKI, Masato SHINJI, and Koji NAKAGAWA. "A STUDY ON TUNNELING METHODS FOR TWIN TYPE CLOSED TUNNELS BASED ON THE COMPARISON OF SUPPORT LOAD." Doboku Gakkai Ronbunshu, no. 777 (2004): 193–98. http://dx.doi.org/10.2208/jscej.2004.777_193.

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48

Lu, Hu, Jiangwei Shi, Charles W. W. Ng, and Yaru Lv. "Three-dimensional centrifuge modeling of the influence of side-by-side twin tunneling on a piled raft." Tunnelling and Underground Space Technology 103 (September 2020): 103486. http://dx.doi.org/10.1016/j.tust.2020.103486.

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49

Chen, Rui-Di, Xing-Tao Lin, Xiangsheng Chen, and Hui Zeng. "Data-and experience-driven prediction method of twin shield tunneling-induced complicated settlement curve and its evolution." Tunnelling and Underground Space Technology 164 (October 2025): 106824. https://doi.org/10.1016/j.tust.2025.106824.

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50

Klein, Michael W., and Sergey B. Simanovsky. "A New Mechanism for High-Tc: Electron Scattering from Interacting Tunneling Units." International Journal of Modern Physics B 12, no. 29n31 (1998): 3016–22. http://dx.doi.org/10.1142/s0217979298001976.

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A theoretical model for high-T c superconductivity is presented based on electron pairing due to their interaction with two-level or multi-level tunneling units (TU's) present in high-T c materials. TU's were found experimentally in YBa2Cu3O 7-δ, Bi2CaSr2Cu2O8 , Tl2CaBa2Cu2O8 and in Tl2CaBa2CuO6 . The TU's have specific directions of orientation with respect to the crystal axis and hence cause a strongly anisotropic scattering of the conduction electrons and a strongly anisotropic gap function Δ(k) with wave vector k. For the weak coupling case we obtain, (i) an analytically derived Δ(k) which

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