Relevant bibliographies by topics / Tunnel face

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Tunnel face'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Tunnel face.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Tunnel face"

1

Zhang, Zhien, Mingli Huang, Chunbo Yu, and Xiaojian Fu. "Study on the Face Stability of a Metro Tunnel in a Silty Clay Layer Constructed Using the Full-Face Method." Symmetry 13, no. 6 (2021): 1069. http://dx.doi.org/10.3390/sym13061069.

Full text
Abstract:
The horizontal displacement of the soil at the face of the subway tunnel is symmetrically distributed along the central axis of the tunnel, which is larger in the middle and smaller at both sides. The displacement is related to the size of the excavation face. If the excavation area is too great, the horizontal displacement of the tunnel face will be too large, easily leading to tunnel face collapse. For this reason, tunnel builders often use the core-keeping ring-cut method to build subway tunnels. A large section is divided into several small sections to reduce the soil displacement caused b
APA, Harvard, Vancouver, ISO, and other styles
2

Du, Jun, Zhi Rong Mei, and Yong Zhao Chen. "Tunnel Face Stability Study in Soft Shallow Tunnel." Advanced Materials Research 1079-1080 (December 2014): 170–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.170.

Full text
Abstract:
With Xiamen Jiaheyuan underground access as the project background, tunnel face stability of soft shallow tunnel was analyzed under the condition of no pre-reinforcement by means of three-dimensional finite element method. The results indicated that the ground was relaxed because the tensile stress appeared in front and top of tunnel face after excavation, at the same time, the ground into the plastic state around the tunnel face. From the point of view of deformation, the displacement of tunnel face were such as the longitudinal horizontal displacement reached the maximum, the vertical deposi
APA, Harvard, Vancouver, ISO, and other styles
3

Han, Kaihang, Xuetao Wang, Beibei Hou, Xingtao Lin, and Chengyong Cao. "Analysis of Instability Mode and Limit Support Pressure of Shallow Tunnel Face in Sands." Symmetry 12, no. 12 (2020): 2067. http://dx.doi.org/10.3390/sym12122067.

Full text
Abstract:
The stability analysis of the tunnel face is not only essential for guaranteeing the safe construction of urban shallow tunnels, but also directly affecting the influence degree of tunnel construction on nearby structures. The primary concerns in the stability analysis of the tunnel face are the instability mode of surrounding rocks and the limit support pressure on the tunnel face. In this paper, face stability of shallow tunnels in sands was conducted using a symmetrical model test. The ground surface settlement, support pressure on the tunnel face and progressive instability modes of sands
APA, Harvard, Vancouver, ISO, and other styles
4

Pang, Yongkang, Hang Lin, Ping Cao, and Gang Meng. "The Influence of Overlying High-Speed Rail Dynamic Loads on the Stability of Shield Tunnel Faces During Excavation." Applied Sciences 15, no. 5 (2025): 2567. https://doi.org/10.3390/app15052567.

Full text
Abstract:
This study investigates the stability of multilayer shield tunnels beneath high-speed railway bases, with a particular focus on the influence of dynamic loads induced by high-speed rail vibrations and shield thrust. A self-designed scale test apparatus was employed to simulate the effects of these dynamic loads on tunnel soil stability, face integrity, formation stress, deformation, and settlement. The experimental setup was specifically designed to accurately replicate the deformation characteristics of the tunnel face and surrounding strata under the combined influence of shield tunneling an
APA, Harvard, Vancouver, ISO, and other styles
5

Wen, Sen, Chao Yan, and Yu Qing Yuan. "Study on Deformation of Rock Tunnel Face." Applied Mechanics and Materials 170-173 (May 2012): 1665–68. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1665.

Full text
Abstract:
Few researchers study on deformation of rock tunnel face. The tunnel face is stable for small section shallow tunnel, but it shouldn’t be ignored when tunnels for large diameter are driven in weak rock mass. In this paper, dilatancy angle taken into account, FLAC3D is used to do 100 groups of numerical tests which are designed by orthogonal design method. According to test results, the formula for maximum deformation of tunnel face and test parameters are fitted by nonlinear regression method. Test value and predictive value have good correlation.
APA, Harvard, Vancouver, ISO, and other styles
6

Man, Jianhong, Hongwei Huang, and Jiayao Chen. "A fast and automatic establishment method of the calculation formula for the tunnel face safety factor based on analytical solution." IOP Conference Series: Earth and Environmental Science 1331, no. 1 (2024): 012006. http://dx.doi.org/10.1088/1755-1315/1331/1/012006.

Full text
Abstract:
Abstract Assessing rock tunnel face stability when constructing mountain tunnels is of utmost importance because it is influenced by various factors, including the tunnel diameter, depth, excavation dimension, geological strength index, uniaxial compressive strength, and Hoek-Brown constant. This study established a tunnel face stability database based on analytical solutions that considered the correlation between the influencing parameters. Finally, a safety factor prediction equation was constructed by combining response surface methodology and the multivariate adaptive regression spline al
APA, Harvard, Vancouver, ISO, and other styles
7

Xie, Tingwei, and Kaihang Han. "Two-Dimensional Numerical Model for Stability Analysis of Tunnel Face Based on Particle Flow Code." Symmetry 13, no. 1 (2021): 94. http://dx.doi.org/10.3390/sym13010094.

Full text
Abstract:
In this paper, numerical simulations of face stability of shallow tunnels are carried out by using the particle discrete element codes PFC2D from the microscopic view. Progressive instability of the tunnel face is achieved through the withdrawal of the baffle used to simulate the tunnel face. Under different retreating displacement of the tunnel face, the evolution laws of support pressure on the tunnel face, the ground deformation, ground surface settlement and contact force chain in front of the tunnel face are studied. The results show that with the withdrawal of the tunnel face, the suppor
APA, Harvard, Vancouver, ISO, and other styles
8

Xie, Tingwei, and Kaihang Han. "Two-Dimensional Numerical Model for Stability Analysis of Tunnel Face Based on Particle Flow Code." Symmetry 13, no. 1 (2021): 94. http://dx.doi.org/10.3390/sym13010094.

Full text
Abstract:
In this paper, numerical simulations of face stability of shallow tunnels are carried out by using the particle discrete element codes PFC2D from the microscopic view. Progressive instability of the tunnel face is achieved through the withdrawal of the baffle used to simulate the tunnel face. Under different retreating displacement of the tunnel face, the evolution laws of support pressure on the tunnel face, the ground deformation, ground surface settlement and contact force chain in front of the tunnel face are studied. The results show that with the withdrawal of the tunnel face, the suppor
APA, Harvard, Vancouver, ISO, and other styles
9

Zhou, Yuan, Yuming Zhu, Shumao Wang, Hu Wang, and Zhengxing Wang. "Rotational Failure Mechanism for Face Stability of Circular Shield Tunnels in Frictional Soils." Advances in Civil Engineering 2019 (March 7, 2019): 1–14. http://dx.doi.org/10.1155/2019/7167802.

Full text
Abstract:
Face stability analyses of shield-driven tunnels are often carried out to determine the required support pressure on the tunnel face. Although various three-dimensional mechanisms have been proposed for circular faces of tunnels in frictional and/or cohesive soils to obtain the limit support pressure, the most critical one has not yet been found. Based on a rotational failure mechanism for the frictional soils, this paper modifies the circular cross section as an ellipse to make the generating collapse surface inscribe the entire circular tunnel face. Using the kinematical approach of limit an
APA, Harvard, Vancouver, ISO, and other styles
10

SATO, Jun, Hutoshi KUSUMOTO, Tsuyoshi DOMON, and Kazuo NISHIMURA. "STABILIZATION OF TUNNEL FACE WITH CURVED TUNNEL FACE." Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering) 71, no. 1 (2015): 1–13. http://dx.doi.org/10.2208/jscejte.71.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Tunnel face"

1

Pan, Qiujing. "Deterministic and Probabilistic Assessment of Tunnel Face Stability." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI044.

Full text
Abstract:
The main work for Qiujing PAN’s PhD thesis is to develop the stability analysis for underground structures, which contains two parts, deterministic model and probabilistic analysis. During his 1st year of PhD research, he has mainly finished the deterministic model study. In the 2nd year, I developed a probabilistic model for high dimensional problems<br>In the contemporary society, the utilization and exploitation of underground space has become an inevitable and necessary measure to solve the current urban congestion. One of the most important requirements for successful design and construct
APA, Harvard, Vancouver, ISO, and other styles
2

Kirsch, Ansgar. "On the face stability of shallow tunnels in sand." Berlin Logos-Verl, 2009. http://d-nb.info/992551668/04.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cimbali, Giulio. "Stability of the tunnel face reinforced by bolts under seepage flow conditions." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

Find full text
Abstract:
Il presente lavoro tratta la stabilità del fronte di scavo, rinforzato con barre di consolidamento ed interessato da drenaggi in avanzamento, di gallerie sotto falda in rocce tenere o terreni. Tale studio è stato sviluppato dal progetto di Tesi attraverso l’analisi all’equilibrio limite che approssima il fronte di scavo con un rettangolo e considera un meccanismo di rottura composto da un cuneo, a tergo del fronte, caricato da un prisma. Il metodo descritto consente di tenere conto dell’effetto stabilizzante delle barre, mediante una distribuzione della pressione di supporto non uniforme. Nel
APA, Harvard, Vancouver, ISO, and other styles
4

Murphy, Michael M. "Defining Stress Changes Ahead of a Tunnel Face and Design of a Data Acquisition System." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36298.

Full text
Abstract:
With increasing world population, demand for underground construction is expected to accelerate in the future. Design of tunnels in rock is still largely empirical, while rock failure in underground mines and tunnel construction continues to claim lives. A seismic method to aid in increasing safety during excavation is tomography. Seismic tomography is a non-invasive technique to map the stress changes induced by mining ahead of the active face. Seismic tomography maps the velocity distributions of elastic waves traveling through a rock mass. The velocity distributions mapped in the tomog
APA, Harvard, Vancouver, ISO, and other styles
5

Murphy, Michael Martin. "Defining Stress Changes Ahead of a Tunnel Face and Design of a Data Acquisition System." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36298.

Full text
Abstract:
With increasing world population, demand for underground construction is expected to accelerate in the future. Design of tunnels in rock is still largely empirical, while rock failure in underground mines and tunnel construction continues to claim lives. A seismic method to aid in increasing safety during excavation is tomography. Seismic tomography is a non-invasive technique to map the stress changes induced by mining ahead of the active face. Seismic tomography maps the velocity distributions of elastic waves traveling through a rock mass. The velocity distributions mapped in the tomog
APA, Harvard, Vancouver, ISO, and other styles
6

SIBOULET, OLIVIER. "Etude de la face (110) de l'arseniure de gallium par microscopie a effet tunnel. Contribution a l'etude des defauts." Paris 7, 1991. http://www.theses.fr/1991PA077086.

Full text
Abstract:
Nous avons observe la face (110) de l'arseniure de gallium par microscopie a effet tunnel. Apres des considerations generales sur la microscopie a effet tunnel et la description du montage, les resultats sont exposes. Nous avons identifie des defauts ponctuels comme les lacunes, les multilacunes, et les complexes de defauts. Nous avons aussi observe des microprecipites d'arsenic et des zones disloquees
APA, Harvard, Vancouver, ISO, and other styles
7

El, Jirari Soukaïna. "Modélisation numérique du processus de creusement pressurisé des tunnels." Thesis, Lyon, 2021. http://www.theses.fr/2021LYSET002.

Full text
Abstract:
De nos jours, le recours aux tunneliers à front pressurisé est de plus en plus fréquent, en particulier en sites urbains, où les conditions de creusement de tunnels sont souvent difficiles tant du point de vue géotechnique qu’environnemental. La préservation du bâti et des structures avoisinantes exige donc une garantie de la stabilité de l’ouvrage, une limitation des tassements en surface et un contrôle des impacts sur les structures avoisinantes au cours du creusement. Ce travail de thèse vise à analyser l’impact du creusement aux tunneliers à front pressurisé sur le terrain en développant u
APA, Harvard, Vancouver, ISO, and other styles
8

AIRES, JÚNIOR Fernando Antônio de Farias. "Otimização do processo metodológico para aquisição de imagens termográficas da face." Universidade Federal de Campina Grande, 2018. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1598.

Full text
Abstract:
Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-08-30T11:48:01Z No. of bitstreams: 1 FERNANDO ANTÔNIO DE FARIAS AIRES JÚNIOR - TESE (PPGEP) 2018.pdf: 6311663 bytes, checksum: cc5b79fd4124386db465d6671d163b9f (MD5)<br>Made available in DSpace on 2018-08-30T11:48:01Z (GMT). No. of bitstreams: 1 FERNANDO ANTÔNIO DE FARIAS AIRES JÚNIOR - TESE (PPGEP) 2018.pdf: 6311663 bytes, checksum: cc5b79fd4124386db465d6671d163b9f (MD5) Previous issue date: 2018<br>Este trabalho tem como objetivo otimizar o processo metodológico para aquisição de imagens termográficas da face. A metodologia uti
APA, Harvard, Vancouver, ISO, and other styles
9

Zizka, Zdenek [Verfasser]. "Stability of slurry supported tunnel face considering the transient support mechanism during excavation in non-cohesive soil / Zdenek Zizka." Düren : Shaker, 2019. http://d-nb.info/1200808436/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hiebel, Fanny. "Etude de l'interface graphène - SiC(000-1) (face carbone) par microscopie à effet tunnel et simulations numériques ab initio." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00680068.

Full text
Abstract:
Le graphène est un cristal bidimensionnel composé d'atomes de carbone arrangés sur un réseau en nids d'abeille. Ce matériau présente des propriétés électroniques intéressantes tant au niveau fondamental qu'en vue d'applications avec notamment une structure de bande exotique en " cône de Dirac " et de grandes mobilités de porteurs. Sa fabrication par graphitisation du SiC est particulièrement adaptée aux applications électroniques. Nous avons étudié ce système par microscopie à effet tunnel (STM) et simulations numériques ab initio avec comme objectif la caractérisation au niveau atomique de l'
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Tunnel face"

1

Branscombe, Margaret. Where the long tunnel is: A case study on how drama can help young children face death as an inevitable part of life. University of Central England in Birmingham, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Authority, Massachusetts Water Resources. Outfall tunnel fact sheet: Boston Harbor Project. Massachusetts Water Resource Authority, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Richemond-Barak, Daphné. Tunnels in Conflict. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190457242.003.0001.

Full text
Abstract:
This chapter paints a panoramic and multifaceted picture of tunnel warfare across time and geography. It begins with World War I, which has marked history with powerful tunnel mining attacks, face-to-face underground combat, and the demonstration of how tunnel users improve their skills on the go. It proceeds to focus on underground combat through World War II, the Vietnam War, the wars in Afghanistan, the War in Syria, and cross-border tunnels in Egypt and Israel. It shows that underground warfare has evolved into a global phenomenon that is currently benefiting from strategic and technologic
APA, Harvard, Vancouver, ISO, and other styles
4

Maslon, Laurence. Face the Music (and Dance). Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199832538.003.0003.

Full text
Abstract:
The technological advance of the gramophone allowed consumers to hear the performers of Broadway in their living rooms. But the tunes from the Great White Way were more persuasive than the impulse to record original performers in the roles they performed nightly on the stage; the technical limitations of the 78 rpm record only allowed for three minutes of music, so the overwhelmingly popular dance band orchestras of the period were, by and large, the most effective purveyors of Broadway music. The notion of an “original cast performance” was not a commercial imperative and the early decades of
APA, Harvard, Vancouver, ISO, and other styles
5

Transportation infrastructure: Central artery/tunnel project faces continued financial uncertainties : report to the Chairman, Subcommittee on Transportation and Related Agencies, Committee on Appropriations, House of Representatives. The Office, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Holtzmann, Dieter. Composition Notebook: Cat Hipster Face Set. Fashionable Hair and Tunnels in Ears on Pe Cat Zingano Zodiac Callahan Yoga Warrior Notebooks Journal Notebook Blank Lined Ruled 6x9 100 Pages. Independently Published, 2020.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wade, Stephen. Luther Strong. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036880.003.0010.

Full text
Abstract:
This chapter describes the recordings of mountain fiddler Luther Strong. In 1937 Luther Strong recorded “Glory in the Meetinghouse” as one of over two dozen fiddle tunes for the Library of Congress. His playing, long admired in his community, became revered nationally through these recordings, with “Glory” among them still regarded as a masterpiece of this idiom. According to his daughter Faye, when Luther played it for his neighbors, “Everybody was wild about it. It had such get up and go.” “Glory” functioned not as a dance number, but as a virtuoso piece for listening. This was music made fo
APA, Harvard, Vancouver, ISO, and other styles
8

Goertzen, Chris. George P. Knauff's Virginia Reels and the History of American Fiddling. University Press of Mississippi, 2017. http://dx.doi.org/10.14325/mississippi/9781496814272.001.0001.

Full text
Abstract:
George P. Knauff's Virginia Reels (1839) was the first collection of southern fiddle tunes and the only substantial one published in the nineteenth century. Knauff's activity could not anticipate our modern contest-driven fiddle subcultures. But the fate of the Virginia Reels pointed in that direction, suggesting that southern fiddling, after his time, would happen outside of commercial popular culture even though it would sporadically engage that culture. This book uses this seminal collection as the springboard for a fresh exploration of fiddling in America, past and present. It first discus
APA, Harvard, Vancouver, ISO, and other styles
9

Caps, John. Looking Back, Looking On. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036736.003.0018.

Full text
Abstract:
This chapter discusses the legacy of Henry Mancini. Mancini should be remembered for three contributions to popular culture: first the reinventing, the freshening of film scoring in the 1960s. Mancini offered to the young Kennedy-era generation his own bright and clear sophisticated style—as clean and courteous as mainstream pop, but as cool and knowing as modern jazz. His second contribution was his repackaging of the melodic material from those colorful scores into jazz-pop record albums for home listening (coinciding with the invention of the stereo vinyl disc and high-fidelity recording te
APA, Harvard, Vancouver, ISO, and other styles
10

Jones, Randy, and Mark Bego. Macho Man. Greenwood Publishing Group, Inc., 2008. http://dx.doi.org/10.5040/9798400681110.

Full text
Abstract:
The Vietnam War was over and America seemed in the midst of a nationwide party. The self-proclaimed Me generation was flocking to discotheques, recreational drug use was high, and sexual taboos were being shattered nationwide. Then The Village People appeared on the music scene. Never before had gay sexuality been as up-front and in the face of America. The Village People struck a cultural nerve and fueled a craze that had them playing to sold-out crowds at Madison Square Garden. Even today, few adults could not at least hum the tunes toY.M.C.A.andMacho Man. Because of the unique role they pla
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Tunnel face"

1

Puzrin, A. M., E. E. Alonso, and N. M. Pinyol. "Tunnel Face Instability: Floresta Tunnels, Spain." In Geomechanics of Failures. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-3531-8_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Li, Wei, Shiquan Hao, Ju Wang, and Junpeng Zou. "Prediction of Construction Water Inflow of Karst Water-Rich Tunnel Without Drainage Tunnel." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_32.

Full text
Abstract:
AbstractThe construction of infrastructure in China faces substantial challenges due to the complex geological conditions and groundwater in karst areas, particularly in tunnel construction. The construction of the Maoping Port railway tunnel in the Three Gorges Hub area has been accompanied by the emergence of caves and faults. The excavation process for the tunnel has been found to expose caves and cavities, leading to sudden surges of water and mud, which can pose a risk. Hence, there is a pressing need to precisely forecast the water inflow in the karst region of Yangmuling Tunnel, in orde
APA, Harvard, Vancouver, ISO, and other styles
3

Zhao, Mingzhe, Haifeng Wang, Jiaxin Zhang, et al. "Surface Settlement Induced by Excavation of Double-Line Shield Tunnel." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_14.

Full text
Abstract:
AbstractIn the construction of the Harbin Metro Line 3 twin-bore tunnel project, the ABAQUS numerical simulation method was employed to investigate the impact of various grouting thicknesses, burial depth ratios, tunnel spacing, and excavation pressures on the geological conditions of the project. Corresponding construction control measures were proposed. The study revealed: (1) Grouting thickness is inversely proportional to ground settlement, with an optimal thickness of 0.3 m; (2) Lateral ground settlement increases with an increasing depth ratio, showing an initial increase followed by a d
APA, Harvard, Vancouver, ISO, and other styles
4

Hase, Ryohei, Yasuji Mihara, Dohta Awaji, Rieko Hojo, and Shoken Shimizu. "Development and Applicability Assessment of a Tunnel Face Monitoring System Against Tunnel Face Collapse." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9219-5_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Georgiou, D., and M. Kavvadas. "Use of the tunnel face stability factor in unsupported and supported tunnel faces." In Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World. CRC Press, 2023. http://dx.doi.org/10.1201/9781003348030-71.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Anagnostou, G., and Th Pferdekämper. "Short-term tunnel face stability in clays." In Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World. CRC Press, 2023. http://dx.doi.org/10.1201/9781003348030-51.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhu, Weibin, Shijian Ju, and Hui Wang. "TBM Tunneling Technologies Through Excavated Tunnel Section." In Shield Tunneling Technology in Mixed Face Ground Conditions. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4112-2_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Fu, Liang. "Influence of Excavation of Horizontal Adit Tunnel on Main Tunnel and Safety Analysis." In Lecture Notes in Civil Engineering. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1260-3_15.

Full text
Abstract:
AbstractFor the influence of horizontal adit tunnel on the main tunnel, taking a tunnel as an example, MIDAS finite element software is used to analyzes the displacement and stress state of the primary support and secondary lining structure of the main tunnel before and after excavation, gives the local structural safety factor at the junction of the two, and analyzes the safety of the lining structure. The results show that: (1) After the main tunnel lining is removed, the lining has a certain displacement to the free face, the maximum is 55.3 mm, and the displacement changes little after the
APA, Harvard, Vancouver, ISO, and other styles
9

Yi, C., S. Senent, and R. Jimenez. "Tunnel face stability considering drainage and surface settlements." In Geotechnical Aspects of Underground Construction in Soft Ground. 2nd Edition, 2nd ed. CRC Press, 2022. http://dx.doi.org/10.1201/9781003355595-96.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Yong, Haijun Liu, Yueyuan Ma, Xueqi Chen, Weinan Li, and Zheng Huang. "Analysis on the Modeling of Rockbusrt Prediction in Deep Tunnels Based on Machine Learning." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1748-8_33.

Full text
Abstract:
AbstractDeep tunnels will face complex mechanical behavior problems of rock mass during construction and operation, among which the rockburst disaster is particularly prominent. Therefore, how to scientifically predict the rockburst activities of deep tunnels has become an urgent problem to be solved. According to the three aspects of energy conditions, lithology conditions and stress intensity that rockburst must meet, the strain energy storage coefficient (Wet), stress concentration factor (SCF) and brittleness index of rock mass (σc/σt) are selected as the discrimination indexes. On this ba
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Tunnel face"

1

Howell, Kerri M. "Corrosion Investigation of a Reinforced Concrete Transit Tunnel." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93338.

Full text
Abstract:
ABSTRACT Visual inspection and field testing were performed to identify the possible sources of reinforcing steel corrosion in a Transit System Tunnel. The testing included electrical continuity measurements, half cell potential measurements, stray current testing and resistivity and chemical analysis of the soil. The results of the investigation indicated that corrosion activity was occurring on the reinforcing steel mat at the interior face of the tunnel wall. There was also evidence that corrosion was occurring in the concrete pads to which the return rails are fastened. Chloride levels, me
APA, Harvard, Vancouver, ISO, and other styles
2

Karli, Geoffrey, Sihong Yan, and Jose Palacios. "Full-Scale EVTOL Rotor Icing Wind Tunnel Testing." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-0034.

Full text
Abstract:
In recent years, the electrically powered Urban Air Mobility (UAM) market has witnessed significant growth, fueled by advances in electric motor and high-power-density lithium battery technologies. This surge of interest has prompted an exploration into the design and functionality of electric vertical take-off and landing (eVTOL) vehicles, particularly those with multi-tilt-rotor configurations. These eVTOL vehicles, capable of operating at higher RPMs than traditional helicopters, face unique challenges, especially under adverse environmental conditions such as icing. Aircraft airframe icing
APA, Harvard, Vancouver, ISO, and other styles
3

Murakami, Ryousei, and Kuniaki Yamazaki. "Development of Tunnel Face Marking System." In 9th International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 1992. http://dx.doi.org/10.22260/isarc1992/0074.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Witasse, R., S. M. Kashfi, and K. P. Iman. "Finite Element Modeling of TBM Tunneling in Mixed-Face Ground Conditions." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0095.

Full text
Abstract:
ABSTRACT This article aims at demonstrating how the use of advanced numerical methods such as the Finite Element Method can provide a reliable prediction of the different ground formation behavior and development of structural forces during tunnel construction. It will particularly illustrate how the challenges associated with TBM excavation in mixed faced conditions could be efficiently dealt with using the finite element analysis. More specially detailed numerical analysis techniques for dealing with the construction of closed twin tunnels in mixed face conditions will be provided using the
APA, Harvard, Vancouver, ISO, and other styles
5

Ahmed, Mahmoud, and Magued Iskander. "Tunnel Face Support Pressure and Associated Risk." In Georisk 2011. American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41183(418)101.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Inazaki, Tomio, and Toshiyuki Kurahashi. "Imaging And Characterizing Fractures Ahead Of Tunnel Face Using In-Tunnel Hsp Method." In 9th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 1996. http://dx.doi.org/10.3997/2214-4609-pdb.205.1996_065.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Brückl, Ewald, Werner Chwatal, Stefan Mertl, and Alexander Radinger. "Continuous Exploration Ahead of the Tunnel Face by TSWD ‐ Tunnel Seismic while Drilling." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010. Environment and Engineering Geophysical Society, 2010. http://dx.doi.org/10.4133/1.3445455.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Inazaki, Tomio, and Toshiyuki Kurahashi. "Imaging and Characterizing Fractures Ahead of Tunnel Face Using In‐Tunnel HSP Method." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 1996. Environment and Engineering Geophysical Society, 1996. http://dx.doi.org/10.4133/1.2922322.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Brückl, Ewald, Werner Chwatal, Stefan Mertl, and Alexander Radinger. "Continuous Exploration Ahead Of The Tunnel Face By Tswd - Tunnel Seismic While Drilling." In 23rd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609-pdb.175.sageep042.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ads, Abdelaziz, Magued Iskander, and Ashraf K. Nazir. "3D Ground Movements Due to Tunnel Face Collapse." In Geo-Congress 2020. American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784482797.030.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Tunnel face"

1

Stokes, A. W., and D. B. Stewart. Cutting head ventilation of a full face tunnel boring machine. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/304779.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cataldo, D., M. Ligotke, H. Bolton, et al. Evaluate and characterize mechanisms controlling transport, fate, and effects of army smokes in the aerosol wind tunnel: Transport, transformations, fate, and terrestrial ecological effects of hexachloroethane obscurant smokes. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5367631.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cataldo, D., P. Van Voris, M. Ligotke, et al. Evaluate and characterize mechanisms controlling transport, fate and effects of army smokes in an aerosol wind tunnel: Transport, transformations, fate and terrestrial ecological effects of fog oil obscurant smokes: Final report. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6399819.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ragalwar, Ketan, William Heard, Brett Williams, Dhanendra Kumar, and Ravi Ranade. On enhancing the mechanical behavior of ultra-high performance concrete through multi-scale fiber reinforcement. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41940.

Full text
Abstract:
Steel fibers are typically used in ultra-high performance concretes (UHPC) to impart flexural ductility and increase fracture toughness. However, the mechanical properties of the steel fibers are underutilized in UHPC, as evidenced by the fact that most of the steel fibers pull out of a UHPC matrix largely undamaged during tensile or flexural tests. This research aims to improve the bond between steel fibers and a UHPC matrix by using steel wool. The underlying mechanism for fiber-matrix bond improvement is the reinforcement of the matrix tunnel, surrounding the steel fibers, by steel wool. Si
APA, Harvard, Vancouver, ISO, and other styles
5

Van Voris, P., M. Ligotke, K. McFadden, et al. Evaluate and characterize mechanisms controlling transport, fate and effects of Army smokes in the aerosol wind tunnel: Transport, transformations, fate, and terrestrial ecological effects of red phosphorus-butyl rubber and white phosphorus obscurant smokes: Final report. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/5786375.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Driver, Crystal J., Timothy J. Johnson, Yin-Fong Su, et al. The Impact of Humidity, Temperature and Ultraviolet Light on the Near-Field Environmental Fate of Pinacolyl Alcohol, Methyl Iodide, Methylphosphonic Dichloride (DCMP) and Thionyl Chloride Using an Environmental Wind Tunnel. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/15010107.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Villada García, Sebastián. Diseño e Implementación de Filtros y Controladores PID para Estabilización de Sistemas Dinámicos. Universidad Nacional Abierta y a Distancia, 2023. http://dx.doi.org/10.22490/ecbti.7573.

Full text
Abstract:
En este trabajo, se aborda el diseño y la implementación de filtros digitales y controladores PID discretos para estabilizar una función de transferencia dada. Utilizando la herramienta c2d de Matlab, se discretiza la función de transferencia original, y se observa que la planta no alcanza el valor deseado de 1. Se implementa un filtro digital multiplicando por un factor de escala. Posteriormente, se emplea el método del lugar geométrico de las raíces para analizar el comportamiento de la planta realimentada, revelando una respuesta lenta al escalón. Luego, se aplica el método de Ziegler-Nicho
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Tunnel face' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography