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Author: Salim Pourmand Publisher: ISBN: Category : Tunneling Languages : en Pages : 15
Book Description
Earth pressure balance (EPB) tunnel boring machines have become increasingly common in the last decade for the construction of tunnels in soft soils. The performance of these machines is so different that they have a major effect on the outside conditions of drilling operations. They use the excavated soil in a pressurized head chamber to apply support pressure to the tunnel face during excavation. A machine may be designed to work in ideal ground conditions. However, natural soils rarely have these properties, and conditioning of the soil is usually necessary to alter its properties to suit the machine. Tunnel excavation is not impossible when the unconditioned soils around the tunnel are coarse and sticky. Effective soil conditioning significantly improves machine performance and control of the soil flow through the screw conveyor. This research presents experimental investigations of soil conditioning for soil/foam and foam/polymer/soil. Methods are also provided to establish a suitable conditioning procedure for determining the optimum foam injection ratio (FIR) for these soils and for studying the effective parameters in soil conditioning such as shear strength and plasticity paste of conditioned soils. Direct shear strength tests were conducted on a small scale, and the plasticity paste of soil was studied by slump tests. The slump tests show that the plasticity of sand/foam and sand/foam/polymer is dependent on the initial moisture content, type of soil, etc. Thus, these parameters are important for achieving optimum FIR and suitable conditioning. In addition, direct shear strength tests show that the injection of foam to sand Type C caused a reduction of 51 % in the internal friction angle. Thus, foams are suitable for modifying soil. Increasing the FIR by more than a special value (optimum FIR) did not change the shear strength significantly.
Author: Salim Pourmand Publisher: ISBN: Category : Tunneling Languages : en Pages : 15
Book Description
Earth pressure balance (EPB) tunnel boring machines have become increasingly common in the last decade for the construction of tunnels in soft soils. The performance of these machines is so different that they have a major effect on the outside conditions of drilling operations. They use the excavated soil in a pressurized head chamber to apply support pressure to the tunnel face during excavation. A machine may be designed to work in ideal ground conditions. However, natural soils rarely have these properties, and conditioning of the soil is usually necessary to alter its properties to suit the machine. Tunnel excavation is not impossible when the unconditioned soils around the tunnel are coarse and sticky. Effective soil conditioning significantly improves machine performance and control of the soil flow through the screw conveyor. This research presents experimental investigations of soil conditioning for soil/foam and foam/polymer/soil. Methods are also provided to establish a suitable conditioning procedure for determining the optimum foam injection ratio (FIR) for these soils and for studying the effective parameters in soil conditioning such as shear strength and plasticity paste of conditioned soils. Direct shear strength tests were conducted on a small scale, and the plasticity paste of soil was studied by slump tests. The slump tests show that the plasticity of sand/foam and sand/foam/polymer is dependent on the initial moisture content, type of soil, etc. Thus, these parameters are important for achieving optimum FIR and suitable conditioning. In addition, direct shear strength tests show that the injection of foam to sand Type C caused a reduction of 51 % in the internal friction angle. Thus, foams are suitable for modifying soil. Increasing the FIR by more than a special value (optimum FIR) did not change the shear strength significantly.
Author: Arsenio Negro Publisher: CRC Press ISBN: 1351583301 Category : Technology & Engineering Languages : en Pages : 362
Book Description
Geotechnical Aspects of Underground Construction in Soft Ground comprises the second Fujita lecture, three keynote lectures and the regular papers presented at the Ninth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground (IS - Sao Paulo 2017, Sao Paulo, Brazil, 4-6 April 2017). The Symposium was organized by the Brazilian Tunnelling Committee (CBT) of the Brazilian Geotechnical Society (ABMS), under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). The contributions cover a wide range of topics: - Deep Excavations - Interaction with Adjacent Structures - Mechanized Excavations - Sequential Excavations - Physical Modelling and Field Tests - Case Histories Geotechnical Aspects of Underground Construction in Soft Ground is particularly aimed at academics and professionals interested or involved in geotechnical and underground engineering. Similarly to previous editions, the contributions are a valuable source of reference on the current practice on the analysis, design and construction of tunnels, deep excavations and large underground structures, with particular emphasis on the development, effects and control of ground movements, their interaction with existing structures, mitigation measures and risk management. IS - Sao Paulo 2017 is the latest in a series of ISSMGE’s TC204 symposia, which began in New Delhi (1993), followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011) and Seoul (2014).
Author: Daniele Peila Publisher: CRC Press ISBN: 0429755023 Category : Technology & Engineering Languages : en Pages : 384
Book Description
Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art contains the contributions presented at the World Tunnel Congress 2019 (Naples, Italy, 3-9 May 2019). The use of underground space is continuing to grow, due to global urbanization, public demand for efficient transportation, and energy saving, production and distribution. The growing need for space at ground level, along with its continuous value increase and the challenges of energy saving and achieving sustainable development objectives, demand greater and better use of the underground space to ensure that it supports sustainable, resilient and more liveable cities. This vision was the source of inspiration for the design of the logos of both the International (ITA) and Italian (SIG) Tunnelling Association. By placing key infrastructures underground – the black circle in the logos – it will be possible to preserve and enhance the quality of the space at ground level – the green line. In order to consider and value underground space usage together with human and social needs, engineers, architects, and artists will have to learn to collaborate and develop an interdisciplinary design approach that addresses functionality, safety, aesthetics and quality of life, and adaptability to future and varied functions. The 700 contributions cover a wide range of topics, from more traditional subjects connected to technical challenges of design and construction of underground works, with emphasis on innovation in tunneling engineering, to less conventional and archetypically Italian themes such as archaeology, architecture, and art. The book has the following main themes: Archaeology, Architecture and Art in underground construction; Environment sustainability in underground construction; Geological and geotechnical knowledge and requirements for project implementation; Ground improvement in underground constructions; Innovation in underground engineering, materials and equipment; Long and deep tunnels; Public communication and awareness; Risk management, contracts and financial aspects; Safety in underground construction; Strategic use of underground space for resilient cities; Urban tunnels. Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art is a valuable reference text for tunneling specialists, owners, engineers, architects and others involved in underground planning, design and building around the world, and for academics who are interested in underground constructions and geotechnics.
Author: Emilio Bilotta Publisher: CRC Press ISBN: 1000643239 Category : Technology & Engineering Languages : en Pages : 564
Book Description
This book set provides a new, global, updated, thorough, clear, and practical risk-based approach to tunnelling design and construction methods, and discusses detailed examples of solutions applied to relevant case histories. It is organized in three sequential and integrated volumes: Volume 1: Concept – Basic Principles of Design Volume 2: Construction – Methods, Equipment, Tools and Materials Volume 3: Case Histories and Best Practices The book covers all aspects of tunnelling, giving useful and practical information about design (Vol. 1), construction (Vol. 2), and best practices (Vol. 3). It provides the following features and benefits: updated vision on tunnelling design, tools, materials, and construction balanced mix of theory, technology, and applied experience different and harmonized points of view from academics, professionals, and contractors easy consultation in the form of a handbook risk-oriented approach to tunnelling problems. The tunnelling industry is amazingly widespread and increasingly important all over the world, particularly in developing countries. The possible audience of the book are engineers, geologists, designers, constructors, providers, contractors, public and private customers, and, in general, technicians involved in the tunnelling and underground works industry. It is also a suitable source of information for industry professionals, senior undergraduate and graduate students, researchers, and academics.
Author: Davidson, Gregg Publisher: Society for Mining, Metallurgy, and Exploration ISBN: 0873354001 Category : Technology & Engineering Languages : en Pages : 1214
Book Description
The North American Tunneling Conference is the premier forum to discuss new trends and developments in underground construction in North America. With every conference, the number of attendees and breadth of topics grows. North American Tunneling: 2014 Proceedings reflects the theme for the 2014 conference, “Mission Possible.” The authors share new theories, novel innovations, and the latest tools that make what once may have been perceived as impossible, now possible. The authors of 128 papers share the latest case histories, expertise, lessons learned, and real-world applications from around the globe on a wide range of topics. They cover the successes and failures of challenging construction projects. Read about challenging design issues, fresh approaches on performance, future projects, and industry trends as well as ground movement and support, structure analysis, risk and cost management, rock tunnels, caverns and shafts, TBM technology and selection, and water and wastewater conveyance.
Author: Nuh Bilgin Publisher: John Wiley & Sons ISBN: 3433607222 Category : Technology & Engineering Languages : en Pages : 359
Book Description
The book relates experience of TBM drives in difficult geology, making use of case studies from Turkey to demonstrate the influence of the local geotechnical conditions on the selection of a tunnel boring machine and the selection of tools. There is an extensive description how various geological phenomena, such as for example transition zones, dikes, rock discontinuities, blocky ground, squeezing ground, swelling clays and high strength and abrasive rocks, can reduce the advance rate and what countermeasures can be introduced. There is also a discussion of necessary advance probing and safety measures. Since the presented practical experience from Turkey can also be applicable for other tunnel projects in difficult geology, the book represents a valuable source of knowledge for every tunneler.
Author: Giulia Viggiani Publisher: CRC Press ISBN: 0203803582 Category : Technology & Engineering Languages : en Pages : 1100
Book Description
Geotechnical Aspects of Underground Construction in Soft Ground comprises a collection of 118 papers, four reports on symposium themes, and four invited lectures presented at the seventh International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Rome, Italy, 16-18 May 2011.The symposium was organized by the
Author: Georgios Anagnostou Publisher: CRC Press ISBN: 1000957829 Category : Technology & Engineering Languages : en Pages : 3529
Book Description
Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World contains the contributions presented at the ITA-AITES World Tunnel Congress 2023 (Athens, Greece, 12 – 18 May, 2023). Tunnels and underground space are a predominant engineering practice that can provide sustainable, cost-efficient and environmentally friendly solutions to the ever-growing needs of modern societies. This underground expansion in more diverse and challenging infrastructure types or to novel underground uses can foster the changes needed. At the same time, the tunneling and underground space community needs to be better prepared and equipped with knowledge, tools and experience, to deal with the prevailing conditions, to successfully challenge and overcome adversities on this path. The papers in this book aim at contributing to the analysis of challenging conditions, the presentation and dissemination good practices, the introduction of new concepts, new tools and innovative elements that can help engineers and all stakeholders to reach their end goals. Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World covers a wide range of aspects and topics related to the whole chain of the construction and operation of underground structures: Knowledge and Passion to Expand Underground for Sustainability and Resilience Geological, Geotechnical Site Investigation and Ground Characterization Planning and Designing of Tunnels and Underground Structures Mechanised Tunnelling and Microtunnelling Conventional Tunnelling, Drill-and-Blast Applications Tunnelling in Challenging Conditions - Case Histories and Lessons Learned Innovation, Robotics and Automation BIM, Big Data and Machine Learning Applications in Tunnelling Safety, Risk and Operation of Underground Infrastructure, and Contractual Practices, Insurance and Project Management The book is a must-have reference for all professionals and stakeholders involved in tunneling and underground space development projects.
Author: Mohammed Elshafie Publisher: CRC Press ISBN: 1000818632 Category : Technology & Engineering Languages : en Pages : 921
Book Description
GEOTECHNICAL ASPECTS OF UNDERGROUND CONSTRUCTION IN SOFT GROUND comprises a collection of 112 contributions presented at the Tenth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Cambridge, United Kingdom, 27-29th June 2022. This 2nd edition also includes four general reports on the symposium themes which give an overview of the papers submitted to the symposium, covered in four technical sessions. The symposium is the latest in a series which began in New Delhi in 1994, and was followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011), Seoul (2014) and Sao Paulo (2017). This symposium was organised by the Geotechnical Research Group at the University of Cambridge, under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). Geotechnical Aspects of Underground Construction in Soft Ground includes contributions from more than 25 countries on the research, design and construction of underground works in soft ground. The contributions cover the following themes: Field case studies Sensing technologies and monitoring for underground construction in soft ground Physical and numerical modelling of tunnels and deep excavations in soft ground Seismic response of underground infrastructure in soft ground Design and application of ground improvement for underground construction Ground movements, interaction with existing structures and mitigation measures Similar to previous editions, GEOTECHNICAL ASPECTS OF UNDERGROUND CONSTRUCTION IN SOFT GROUND represents a valuable source of reference on the current practice of analysis, design, and construction of tunnels and deep excavations in soft ground. The book is particularly aimed at academics and professionals interested in geotechnical and underground engineering.
Author: Mohammed Elshafie Publisher: CRC Press ISBN: 1000421090 Category : Technology & Engineering Languages : en Pages : 877
Book Description
Geotechnical Aspects of Underground Construction in Soft Ground comprises a collection of 112 papers, the Fujita Lecture, three Special Lectures and the Bright Spark Lecture presented at the Tenth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Cambridge, United Kingdom, 27-29 June 2022. This second edition includes four general reports on the symposium themes. The symposium is the latest in a series which began in New Delhi in 1994, and was followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011), Seoul (2014) and Sao Paulo (2017). This was organised by the Geotechnical Research Group at the University of Cambridge, under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). Geotechnical Aspects of Underground Construction in Soft Ground includes contributions from more than 25 countries on research, design and construction of underground works in soft ground. The contributions cover: Field case studies Sensing technologies and monitoring for underground construction in soft ground Physical and numerical modelling of tunnels and deep excavations in soft ground Seismic response of underground infrastructure in soft ground Design and application of ground improvement for underground construction Ground movements, interaction with existing structures and mitigation measures The general reports give an overview of the papers submitted to the symposium, covered in four technical sessions. The proceedings include the written version of the five invited lectures covering topics ranging from developments in geotechnical aspects of underground construction, tunnelling and groundwater interaction (short and long-term effects), the influence of earth pressure balance shield tunnelling on pre-convergence and segmental liner loading (field observations, modelling and implications on design). Similar to previous editions, Geotechnical Aspects of Underground Construction in Soft Ground represents a valuable source of reference on the current practice of analysis, design, and construction of tunnels and deep excavations in soft ground. The book is particularly aimed at academics and professionals interested in geotechnical and underground engineering.
Author: Salim Pourmand
Author: Salim Pourmand
Author: Arsenio Negro
Author: Daniele Peila
Author: Emilio Bilotta
Author: Davidson, Gregg
Author: Nuh Bilgin
Author: Giulia Viggiani
Author: Georgios Anagnostou
Author: Mohammed Elshafie
Author: Mohammed Elshafie