Mechanized Tunnelling In Urban Areas

Internationally, the mechanized excavation of tunnels has intensified in the last two decades, as the number of tunnels being constructed for subways and railway underpasses increases. The subject of mechanized tunnelling in urban areas has not previously received the attention that it deserves, despite there being specific hazards associated with the construction of tunnels in metropolitan areas, including poor ground conditions, water tables higher than the level of tunnels, and subsidence leading to damage to the existing structures on the surface. The application of technologies for achieving the stability of the tunnel and for minimizing surface settlement is described in this book. Accurate characterization of the ground; rigorous assessment and management of risk from design to maintenance; the correct choice of a tunnel boring machine and a plan for the advancement of the tunnel; specific excavation procedures and real-time monitoring of excavation parameters are all discussed in this thorough work.

Specific hazards associated with the construction of tunnels in metropolitan areas exist, including poor ground conditions, water tables higher than the level of tunnels, and subsidence leading to damage to the existing structures on the surface. This book describes the application of technologies for achieving the stability of tunnels and for minimizing surface settlement. Important topics discussed include accurate characterization of the ground, rigorous assessment and management of risk from design to maintenance, the correct choice of a tunnel boring machine, a plan for the advancement of the tunnel, specific excavation procedures, and real-time monitoring of excavation parameters. This wholly revised and expanded 2nd edition includes various important updates, particularly with respect to aspects of mechanized technology updated by the industry and to experience gained from some new case-histories. It also includes new sections on contingency plans and on the methodology for implementing a geological, hydrogeological and geotechnical model which lies at the basis of every tunnelling design. The work will be of interest to practising engineers, designers, consultants and students in mining, underground, tunnelling, transportation and construction engineering, as well as to foundation and geological engineers, urban planners/developers and architects.

Underground infrastructure undoubtedly constitutes one of the most important engineering equipments of urbanized areas. It includes energy distribution, communications and water, carry away sewage, transportation systems of goods and people, storage facilities of articles, liquids and gases, and commercial, recreational and research activities and other functions. Underground Infrastructure of Urban Areas 4 is dedicated to the research, design, implementation and maintenance of infrastructure systems, as well as communication tunnels and building structures (garages, tanks, etc.) in urbanized areas. The book collects contributions from several countries, presenting current scientific and technical issues associated with this area of the building industry. Both theoretical issues and cases studies on the design, execution and testing of underground infrastructures at expertise and scientific levels are included in the book. Presenting the state-of-the-art in underground infrastructure of urbanized areas, Underground Infrastructure of Urban Areas 4 aims at academics, designers and builders of structures, producers and suppliers of building materials, equipment, and underground structures, and also to those managing and maintaining these structures.

This book contains papers, presented at the ITA World Tunnelling Congress 2003 held in Amsterdam, which reflects the state of the art with regard to research, analysis, design and practical experience in almost all fields of tunnelling and underground space construction.

This text describes topics discussed at the conference, including: tunnelling and construction in soft ground and rocks; geological investigations; tunnelling machines; planning for underground infrastructure; safety issues and environmental and social aspects of underground development.

This book consists of selected papers presented at the International Conference on Geotechnical Challenges in Mining, Tunneling and Underground Infrastructures (ICGMTU), held as a virtual conference on December 20, 2021. The papers represent the research work in the related fields of underground mining, ground control, mining geotechnics, geo-instrumentation, mine tunnelling, and underground structures. It focuses on the latest technology being implemented including artificial intelligence and machine learning applications to solve challenges in mining tunneling and geotechnical structure engineering. It also highlights the state-of-the-art technologies adopted by the civil and mining industry for their commercial as well as environmental benefits. The papers are presented by an international pool of academics, research scientist, and industrial experts and therefore cater to the global audience from the field of underground engineering.

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 plays 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 grow. The authors—experts 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 126 papers presented at the conference, this book takes you deep inside the projects. It includes 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 water and wastewater conveyance.

The so-called fourth dimension of a metropolis is the underground space beneath a city which typically includes structures such as tunnels, which facilitate transport and provide gas, water and other supplies. Underground space may also be utilised for living, working and recreational facilities and industrial storage. These volumes focus on underg