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Showing 1 to 20 of 21 for “"Tunnel Boring Machine"”.
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Concrete lining system for the continuous tunnel boring machine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Performance prediction and conceptual design of a continuous tunnel boring machine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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The friction acting on the slipform of a continuous tunnel boring machine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Tunnel Boring Machine (TBM) performance in Singapore's Mass Rapid Transit (MRT) system
… summarizes and evaluates the performance of Tunnel Boring Machine (TBM) construction in Singapore's MRT network. Surface settlement induced by the tunneling process can cause damage to underground utilities and foundations and buildings and/or disrupt daily life by damaging roads and …
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Predicting tunnel boring machine utilization using discrete event simulation models for hard rocks
Tunnel Boring Machines (TBM) are perhaps the most efficient method for tunnel excavation, as they have become the dominant mode and method of tunneling around the world. One of the essential steps for justification of the use of TBMs as well as planning the completion time and estimating the cost …
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Rock Hardness Index Properties and Geotechnical Parameters for Predicting Tunnel Boring Machine Performance
Made available in DSpace on 2014-12-13T19:31:25Z (GMT). No. of bitstreams: 1 7606985.pdf: 13001948 bytes, checksum: ee73425fbe7f76e64c354d25231944fa (MD5) Previous issue date: 1975
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Imaging ahead of a tunnel boring machine with DC resistivity: a laboratory and numerical study
Tunnel Boring Machines (TBMs) are powerful tools for tunneling and underground construction, which excavate material and install a segmental concrete tunnel liner for support. However, unknown ground conditions pose a significant risk to tunneling operations and any damage to the machine can be …
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Examination of excavation chamber pressure behavior on a 17.5 m diameter earth pressure balance tunnel boring machine
… within a 17.5 m diameter earth pressure balance tunnel boring machine (EPBM) used on the Alaskan Way viaduct replacement tunnel project in Seattle, Washington, USA. The study examines behavior during the first 150 rings of tunneling (10% of the project) through till and till-like deposits, …
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Modeling uncertainty in the New York City no. 7 subway line extension project using Decision Aids for Tunnelling (DAT)
… to starting construction. The Decision Aids for Tunnelling (DAT) allow engineers to consider the uncertainties associated with project ground conditions, construction activities, and problem events, and to determine distributions of total cost and time for completion of construction. This is done …
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Analytical Graphical Approach for Predicting Ground Conditions in TBM-based Tunneling Construction
… the use of Artificial Intelligence (AI) and Machine Learning (ML) algorithms to predict geology based on Tunnel Boring Machine (TBM) data. The use of mechanized tunneling has become frequent over the last decade, and their performance is critical for project management and safety. Numerical …
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Ground movements during tunnelling in sand
During soft ground tunnel construction, if the face pressure of a tunnel boring machine is not strictly controlled, excessive ground movements will propagate vertically upwards causing significant damage to adjacent buried infrastructure and surface structures. In order to investigate the face …
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Approcci innovativi per la sicurezza delle infrastrutture strategiche: valutazione speditiva della vulnerabilità sismica di ponti con machine learning e analisi sperimentale avanzata su conci per gallerie
… un modello surrogato basato su tecniche di Machine Learning (ML), in particolare la Regressione con Processo Gaussiano (GPR). Il modello GPR si è dimostrato in grado di predire con elevata accuratezza i parametri chiave delle curve di fragilità (capacità mediana μ e dispersione β) a …
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Studio del comportamento statico e dinamico dei sistemi galleria-terreno-strutture in elevazione in ambiente urbano
… le vibrazioni indotte in superficie dalla TBM (Tunnel Boring Machine) durante la fase di scavo. Terminata l’analisi riguardante gli aspetti legati alla fase di scavo, è stata analizzata la risposta dinamica di un sistema galleria-terreno-strutture in elevazione eseguendo una serie di analisi …
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Centrifuge modelling of the impact of mechanised tunnelling on piled foundations using a miniature TBM
… areas. This means that the construction of new tunnels often occurs close to existing piled structures. The majority of tunnelling projects are currently being carried out using tunnel boring machines or TBMs. Understanding the stress relief and soil deformations taking place in the soil mass …
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Tunnelling Effects on Bored Piles in Clay
… increasingly moved underground. Significant tunnel construction, using various tunnelling techniques, has been undertaken in a number of major cities in recent years. The ground is subjected to stress relief during tunnelling; this propagates through the soil to the foundations of buildings …
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Prediction of instability and ground movements during tunnel construction in non-homogenous conditions
Advances in tunneling technology, notably in the widespread use of closed-face tunneling boring machines, have reduced risks and greatly increased the productivity of underground construction projects. For shallow tunnels in 'soft ground', instabilities can create collapse mechanisms that propagate …
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Scale-model investigation of brittle tunnel failure using a true-triaxial device
Brittle instabilities in tunnel excavation have led to severe consequences such as spalling, violent rock ejection or rock burst, and tunnel collapse. Detached rocks from the tunnel boundary not only compromise the structural integrity of tunnels but also pose significant safety risks to personnel …
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The use of Sardinian granite by-products from the Sarrabus Gerrei region to be used in road pavement layers
… also from civil engineering works consisting of tunnels, dams and other excavation projects. The storage of granite by-products in such great amount and for long periods produces damage to the environment, in terms of alterations of the landscape that can be temporary but in several cases …
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Foundation response to ground movements induced by tunnel excavation
… developed to enable the efficient analysis of tunnelling-induced effects on shallow and deep foundations. These approaches were applied in the back analyses of well-documented field case histories and centrifuge experiments to investigate in detail the response of foundations to tunnel …
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