The Geotechnical News

Tunnels have a high degree of risk that needs to be assessed and managed. Underground works intersect and interact with natural materials, incorporating their characteristics as structural components of their own stability. For this reason geotechnical risk analyses are implemented at all phases of tunnel construction, from design through to post-construction maintenance. Analysis of geotechnical risk involves a group of studies which lead to the identification and evaluation of the potential probability of error and the consequences of its occurrence. This volume considers construction and safety, financing and control, and exploration and maintenance. Eminent specialists discuss risk assessment and management, based both on advanced theoretical concepts and on practical experience. The book is of interest to a wide range of professionals involved in planning, construction and management of tunnels: entrepreneurs, designers, consultants and contractors.

David N. Chapman, Nicole Metje, Alfred Stark ... 432 pages - Publisher: CRC Press; 2nd edition (November, 2017) ... Language: English - ISBN-10: 1498766242 - ISBN-13: 978-1498766241.

Tunnelling provides a robust solution to a variety of engineering challenges. It is a complex process, which requires a firm understanding of the ground conditions as well as structural issues. This book covers the whole range of areas that you need to know in order to embark upon a career in tunnelling. It also includes a number of case studies of real tunnel projects, to demonstrate how the theory applies in practice. New features of this second edition include: the introduction of a Crossrail case study, focussing on the preparation work to receive a TBM into a station box; a case study updating the Utilisation Method for assessing the remaining structural capacity of sprayed concrete lining; and further information on recent developments in tunnel boring machines, including multimode machines.

The coverage includes: Both hard-rock and soft-ground conditions - Site investigation, parameter selection, and design considerations - Methods of improving the stability of the ground and lining techniques - Descriptions of the various main tunnelling techniques - Health and safety considerations - Monitoring of tunnels during construction - Description of the latest tunnel boring machines. Case studies with real examples, including London’s Crossrail: Clear, concise, and heavily illustrated, this is a vital text for final-year undergraduate and MSc students and an invaluable starting point for young professionals and novices in tunnelling.

Alun Thomas ... 264 pages - Publisher: CRC Press; (November, 2008) ... Language: English - ISBN-10: 0415368642 -ISBN-13: 978-0415368643 ...

Practising engineers on site, in the design office or in client organizations will find this book an excellent introduction to the design and construction of sprayed concrete lined (SCL) tunnels. The complex behaviour of the early age behaviour of the sprayed concrete requires careful management. This book covers all aspects of SCL tunnelling – from the constituents of sprayed concrete to detailed design and management during construction. Although there is a close interdependence between all the facets of sprayed concrete, few engineers have the right breadth of experience and expertise, and this urgently needs to be transferred to the wider engineering community. Disseminating essential information for tunnelling engineers, Sprayed Concrete Lined Tunnels is key reading for all involved in or studying the process.

Immersed tunnels have been around for more than a century but remain a relatively unknown form of tunnel construction. For waterway crossings they are an effective alternative to bored tunnels and bridges, particularly in shallower waters, soft alluvial soils, and earthquake-prone areas. Successful implementation requires a thorough understanding of a wide variety of civil engineering disciplines and construction techniques. Immersed Tunnels brings together in one volume all aspects of immersed tunnels from initial feasibility and planning, through design and construction, to operation and maintenance. The book presents design and construction principles to give a full appreciation not only of what is involved in an immersed tunnel scheme but also how potential problems are dealt with and overcome. It examines important factors that have to be considered, particularly environmental implications and mechanical and electrical systems. It also gives practical examples of how specific techniques have been used in various projects and highlights issues that designers and constructors should be aware of. In addition, the book discusses operation and maintenance and reviews contractual matters. These aspects are described from the viewpoint of two experienced practitioners in the field who have a wealth of experience on immersed tunnel projects worldwide. As tunnels are increasingly being adopted as engineering solutions around the world, this unique and extensively illustrated reference explores the wide variety of immersed tunnel techniques available to designers and constructors. It provides essential insight for anyone involved, or seeking to be involved, with immersed tunnel projects.

Dips is designed for the interactive analysis of orientation based geological data. The program is capable of many applications and is designed for the novice or occasional user, and for the accomplished user of stereographic projection who wishes to utilize more advanced tools in the analysis of geological data.

Dips allows the user to analyze and visualize structural data following the same techniques used in manual stereonets. In addition, it has many computational features, such as statistical contouring of orientation clustering, mean orientation and confidence calculation, cluster variability, and qualitative and quantitative feature attribute analysis.

Dips is designed for the analysis of features related to the engineering analysis of rock structures, however, the free format of the Dips data file permits the analysis of any orientation-based data.

Krishan Kaul ... 
704 pages
Publisher: CRC Press; 1st edition (May 25, 2010)
Language: English
ISBN-10: 0415469074
ISBN-13: 978-0415469074 

Because of their complexity and scale, metro structures capture all the essential aspects of a cut-and-cover structure, and so are given primary focus in this book. The design of a metro construction is outlined coherently and in detail; and the reader is shown how to apply this design process equally well to other, relatively simple, cut-and-cover structures.

Geotechnical and structural engineering principles are combined with both design and construction practice to make this book a unique guide for engineers.

Rock mass classification methods are commonly used at the preliminary design stages of a construction project when there is very little information. It forms the bases for design and estimation of the required amount and type of rock support and groundwater control measures. Encompassing nearly all aspects of rock mass classifications in detail, Civil Engineering Rock Mass Classification: Tunnelling, Foundations and Landsides provides construction engineers and managers with extensive practical knowledge which is time-tested in the projects in Himalaya and other parts of the world in complex geological conditions. Rock mass classification is an essential element of feasibility studies for any near surface construction project prior to any excavation or disturbances made to earth. Written by an author team with over 50 years of experience in some of the most difficult mining regions of the world, Civil Engineering Rock Mass Classification: Tunnelling, Foundations and Landsides provides construction engineers, construction managers and mining engineers with the tools and methods to gather geotechnical data, either from rock cuts, drifts or core, and process the information for subsequent analysis. The goal is to use effective mapping techniques to obtain data can be used as input for any of the established rock classification systems. The book covers all of the commonly used classification methods including: Barton’s Q and Q’ systems, Bieniawski’s RMR, Laubscher’s MRMR and Hoek’s and GSI systems. With this book in hand, engineers will be able to gather geotechnical data, either from rock cuts, drifts or core, and process the information for subsequent analysis. Rich with international case studies and worked out equations, the focus of the book is on the practical gathering information for purposes of analysis and design. Identify the most significant parameters influencing the behaviour of a rock mass. + Divide a particular rock mass formulation into groups of similar behaviour, rock mass classes of varying quality. + Provide a basis of understanding the characteristics of each rock mass class + Relate the experience of rock conditions at one site to the conditions and experience encountered at others  + Derive quantitative data and guidelines for engineering design + Provide common basis for communication between engineers and geologists.