Download or read book Improving Productivity of Tunnel Boring Machines written by Nicholas Jencopale and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tunneling with tunnel boring machines (TBMs) is one of the most mechanized and sophisticated processes within the construction industry. However, there are considerable risks when venturing down several hundred feet where the conditions cannot be accurately determined in advance. Months and years of planning, engineering, profiling, researching, and scheduling go into a typical tunneling project before any ground breaking event. This thesis discussed in detail the growing technologies of the tunneling process using tunnel boring machines (TBM). First, some background information on tunneling and the use of a TBM was provided to introduce the process and the industry being discussed. A tunnel boring machine is unique to each project based on the ground conditions that will be encountered, the diameter and length of the tunnel, as well as several other technical and dynamic factors. After the introduction, the thesis examined a case study of a tunnel project, the Jollyville Transmission Main for the Water Treatment Plant #4 in Austin, Texas. More specifically, one of the TBMs used will be studied in order to maximize production. The details of this project provide an opportunity to discuss production improvements, scheduling impacts, and project costs. Different methods and their effect on the overall project outcome were compared. The case study information was compared with literature, as well as on-the-job information gained from discussions with the project manager, superintendents, and other on-site personnel. This research concluded that given certain circumstances, the use of a continuous conveyor, rather than the muck car/rail method, has potential for a quicker completion schedule and a greater profit for the contractor.
Download or read book Improving productivity written by and published by . This book was released on 1977 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book RANN 2 Improving productivity written by and published by . This book was released on 1977 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Parameters Impacting Productivity of Tunnel Boring Machines written by Hamed Hashem Pour and published by . This book was released on 2017 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tunnel construction has been on the rise for transportation of humans, freight and fluids. For a successful tunneling project, tunneling contractors must have sufficient data about scope of work, project features and characteristics of the ground to estimate the advance rate of a tunnel boring machine (TBM). The main objective of this thesis is to study tunneling case histories and literature to analyze TBM productivity based on ground conditions, diameter and the duration of each project. Project data was tabulated and results are reported in this thesis. The methodology used to conduct the literature relied on databases such as ProQuest, Engineering Village, Science Direct, Google Scholar, and ASCE Library. Additionally, Tunnels and Tunneling International Magazine as well as TBM manufactures' websites were studied. The conclusions of this thesis show that in-depth ground investigations, such as using pilot tunnels, will improve construction productivity of tunnel operations. Other factors impacting productivity include compressive strength of rocks or hard ground, rock abrasivity, tunnel diameter, location of project (whether urban or rural), and other factors as determined in this thesis.
Download or read book Tunnel Boring Machines Trends in Design and Construction of Mechanical Tunnelling written by A. Schulter and published by CRC Press. This book was released on 2020-08-26 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past ten years there was a worldwide trend towards increased use of Tunnel Boring Machines (TBM's). This trend covers a broad variety of applications ranging both from small diameters for sewers and other utilities to large diameters for double track railway and even three-lane highway tunnels. The response to this has been the development of both hard rock machines in the direction for application in soft ground, and soft ground TBM's to be used in soft rock. Parallel to the technical development of TBM's towards applications for longer tunnels, running through changing geological conditions, there are needs for the development of lining methods. 'TBM Tunnel Trends' an international lecture serie collection, aims to present the latest scientific and practical state of the art of TBM tunnelling, taking into consideration interactions between machinery and lining. 26 international highly recognized papers.
Download or read book Hardrock Tunnel Boring Machines written by Bernhard Maidl and published by John Wiley & Sons. This book was released on 2012-01-09 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamentals of tunneling machine technology: drilling, tunneling, waste removal and securing. It treats methods of rock classification for the machinery concerned as well as legal issues, using numerous example projects to reflect the state of technology, as well as problematic cases and solutions. The work is structured such that readers are led from the basics via the main functional elements of tunneling machinery to the different types of machine, together with their areas of application and equipment. The result is an overview of current developments. Close cooperation among the authors involved has created a book of equal interest to experienced tunnelers and newcomers.
Download or read book Practical Management of Tunneling with Tunnel Boring Machines written by Nuh Bilgin and published by CRC Press. This book was released on 2024-02-12 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the management of mechanized tunneling with examples from global projects. It starts with an introduction to mechanized tunneling including management of job organization, planning job sites, portals, or launching boxes in mountains/open fields and urban areas. The management of the transport with belt conveyors, locomotives, and multi-service vehicles is explained with numerical examples. Cost management and basic parameters governing tunneling costs in different countries are discussed. Risk management in mechanized tunneling projects is also explained. Features: Offers the practical issues with setting up a job site, the cost, and logistic issues related to tunneling. Reviews cost management and basic parameters governing tunneling costs in different countries. Covers treatment of spoil management plan and the management of contaminated ground. Explores key points on the logistics and the management of the consumables. Provides the latest international case studies of specific companies. This book is aimed at professionals and researchers in tunneling, civil and mining engineering, and geology.
Download or read book Urban Mass Transportation Abstracts written by and published by . This book was released on 1982 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prediction of Instability and Ground Movements During Tunnel Construction in Non homogenous Conditions written by Vasiliki Founta and published by . This book was released on 2018 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 to the ground surface, while the prediction and control of tunnel-induced ground deformations remain a key challenge. These problems are especially significant for 'mixed face' conditions, where the tunnel boring machine encounters soils of contrasting mechanical and/or hydraulic properties. This thesis uses finite element simulations to investigate the control of face stability and ground deformations for shallow tunnels in soft ground. The primary control parameters of interest are the face pressures imposed by earth pressure balance (EPB) or slurry shield machines, and the grouting pressures used to control deformations around the tail void at the rear of the tunnel shield. Stability is evaluated by methods of (c-phi) strength reduction, for a range of ground conditions including i) undrained failure in low permeability clays with continuous and discontinuous (mixed face) strength profiles; and ii) drained shearing in high permeability sands above and below the water table, where the closed-face conditions at the tunnel face provide an impermeable membrane. The numerical results are synthesized into a series of generalized design charts for immediate application. Numerical simulations using 3D finite element models are also used to investigate the factors influencing ground movements for closed-face tunneling operations using a relatively simple elastic-perfectly plastic model of soil behavior. These analyses show that maximum surface deformations above the tunnel can be estimated by simple addition of constituent sources associated with the face pressure, shield shape (conicity), machine weight (buoyancy) and grouting pressure. The research proposes a simplified method for predicting the surface settlements based on analytical parameterization of the numerical results, enabling direct design of parameters for controlling ground deformations associated with tunneling for mixed-face conditions in clays. The proposed methodology for predicting ground settlement has been evaluated using data from three well-documented case studies: 1) Crossrail C300 beneath Hyde Park in London, where tunnels were bored through units of stiff clay; 2) Downtown Line DTL3 (C933) in Singapore where tunnels traversed an interface between stiff Old Alluvium and overlying soft marine clays; and 3) northern sections of the MTRA Blue Line in Bangkok, where tunnels were built below the interface between soft and stiff clays. The comparisons between computed and measured data from these projects show that the proposed generic design method achieves comparable agreement to site specific numerical simulations and empirical methods such as ANN. Further studies are now needed to extend the model for mixed face conditions with contrasting permeability.
Download or read book Energy Research Program of the U S Department of the Interior written by United States. Dept. of the Interior. Office of Research and Development and published by . This book was released on 1975 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Tunneling 2022 Proceedings written by Paul Madsen and published by Society for Mining, Metallurgy & Exploration. This book was released on 2022-06-03 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Your timely source for more cost-effective and less disruptive solutions to your underground infrastructure needs. The North American Tunneling Conference is the premier biennial tunneling event for North America, bringing together the brightest, most resourceful, and innovative minds in the tunneling industry. It underscores the important role that the industry plans in the development of underground spaces, transportation and conveyance systems, and other forms of sustainable underground infrastructure. With every conference, the number of attendees and breadth of topics grows. The authors—expert and leaders in the industry—share the latest case histories, expertise, lessons learned, and real-world applications from around the globe. Crafted from a collection of 92 papers presented at the conference, this book takes you deep inside the projects. It includes sections on technology, planning, design, and case histories.
Download or read book Evolutionary and Revolutionary Technologies for Mining written by National Research Council and published by National Academies Press. This book was released on 2002-03-14 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Office of Industrial Technologies (OIT) of the U. S. Department of Energy commissioned the National Research Council (NRC) to undertake a study on required technologies for the Mining Industries of the Future Program to complement information provided to the program by the National Mining Association. Subsequently, the National Institute for Occupational Safety and Health also became a sponsor of this study, and the Statement of Task was expanded to include health and safety. The overall objectives of this study are: (a) to review available information on the U.S. mining industry; (b) to identify critical research and development needs related to the exploration, mining, and processing of coal, minerals, and metals; and (c) to examine the federal contribution to research and development in mining processes.
Download or read book Hearings Reports and Prints of the Senate Committee on Interior and Insular Affairs written by United States. Congress. Senate. Committee on Interior and Insular Affairs and published by . This book was released on 1976 with total page 1614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomechanics and Geodynamics of Rock Masses written by Vladimir Litvinenko and published by CRC Press. This book was released on 2018-05-24 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomechanics and Geodynamics of Rock Masses – Selected Papers contains selected contributions from EUROCK 2018, the 2018 International Symposium of the International Society for Rock Mechanics (ISRM 2018, Saint Petersburg, Russia, 22—26 May 2018). Dedicated to recent advances and achievements in the fields of geomechanics and geotechnology, the book will be of interest to researchers and professionals involved in the various branches of rock mechanics and rock engineering. EUROCK 2018, organized by the Saint Petersburg Mining University, is a continuation of the successful series of ISRM symposia in Europe, which began in 1992 in Chester, UK.
Download or read book Energy Research Program of the U S Department of the Interior written by United States. Department of the Interior. Office of Research and Development and published by . This book was released on 1976 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1976 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1981 DOE authorization written by United States. Congress. House. Committee on Science and Technology and published by . This book was released on 1980 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
