This practical guide describes the stage-by-stage development of a method for predicting the penetration rate (PR) and the advance rate (AR) for tunnel boring machines based on an expanded version of the Q-value, QTBM. The author analyzes 145 TBM tunnels that total 1,000km in length. He then develops simple formulae to estimate PR and AR from the QTBM value and to back-calculate QTBM from performance data. The book quantitatively explains actual advance rates as high as five m/hr for one day or as low as 0.005 m/hr for several months. It also covers logging methods, empirical TBM tunnel support design, and numerical verification of support.
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About the Author
Nick Barton began his employment at the Norwegian Geotechnical Institute (NGI). He was a Division Director for 5 years and a Technical Advisor for 10 years in the Dam, Rock Tunnel, Avalanche and Reservoir Divisions. From 1980 to 1984, he worked in the Geomechanics Division of Terra Tek in Salt Lake City, USA. He has taught at the University of São Paulo since 1997 and since 2001 has had his own international consultancy, based in Oslo and São Paulo. Nick Barton developed the widely used Q-system for classifying rock masses and for selecting rock tunnel and cavern support in 1974, and was co-developer of the Barton-Bandis constitutive laws for rock joint computer modelling in 1982.
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Development of TBM prognosis method that works,
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This review is from: TBM Tunnelling in Jointed and Faulted Rock (Hardcover)
This slim volume first analyses factors affecting tunneling speeds as expressed by penetration rate PR, and actual advance rate AR. A 1000 km and 145 case record analysis shows how TBM advance rate gradually declines, whether breaking world records like 16 km in one year, or when stuck in a fault zone without pre-treatment for weeks or months or worse. TBM are remarkable machines, but classification of the ground to be penetrated, and especially the machine-rock interaction is all important.This volume records the development of a TBM performance prognosis method, now facilitated by a graphic performance model called Qtbm, using the mostly simple formulae developed.
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Inside This Book
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First Sentence:
The frontispiece shows a photograph from the world's first bored tunnel. Read the first page Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
tunnelling direction, cutter life index, cutter force, cutter penetration, probe drilling, cutter loads, central threshold, rock mass classification, faulted rock, hard rock tunnels, rock mass quality, sonic logging, uniaxial compression strength, rock mass properties, cutter wear, pilot tunnel, rock mass strength, uniaxial strength, rock conditions, penetration index, rock class, tunnel axis, tunnel support, disturbed zone, advance rate Key Phrases - Capitalized Phrases (CAPs): (learn more)
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Front Cover | Table of Contents | First Pages | Index | Back Cover | Surprise Me!
The frontispiece shows a photograph from the world's first bored tunnel. Read the first page Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
tunnelling direction, cutter life index, cutter force, cutter penetration, probe drilling, cutter loads, central threshold, rock mass classification, faulted rock, hard rock tunnels, rock mass quality, sonic logging, uniaxial compression strength, rock mass properties, cutter wear, pilot tunnel, rock mass strength, uniaxial strength, rock conditions, penetration index, rock class, tunnel axis, tunnel support, disturbed zone, advance rate Key Phrases - Capitalized Phrases (CAPs): (learn more)
Star Mine, Hong Kong, South Africa New!
Books on Related Topics | Concordance | Text Stats Browse Sample Pages:
Front Cover | Table of Contents | First Pages | Index | Back Cover | Surprise Me!
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