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Congresso Internazionale Su Grandi Opere Sotterranee

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Congresso Internazionale Su Grandi Opere Sotterranee

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Author :
language : it
Publisher:
Release Date : 1986

Congresso Internazionale Su Grandi Opere Sotterranee written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Tunnels categories.

Congresso Internazionale Su Grandi Opere Sotterranee

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Author :
language : en
Publisher:
Release Date : 1986

Congresso Internazionale Su Grandi Opere Sotterranee

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Author :
language : en
Publisher:
Release Date : 1986

Congresso Internazionale Su Grandi Opere Sotterranee

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Author :
language : en
Publisher:
Release Date : 1986

On The Feasibility Of Tbm Drives In Squeezing Ground And The Risk Of Shield Jamming

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Author : Marco Ramoni
language : en
Publisher: vdf Hochschulverlag AG
Release Date : 2010

On The Feasibility Of Tbm Drives In Squeezing Ground And The Risk Of Shield Jamming written by Marco Ramoni and has been published by vdf Hochschulverlag AG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Science categories.

Squeezing ground represents a challenging operating environment as it may slow down or obstruct TBM operation. Due to the geometrical constraints of the equipment, relatively small convergences of 10-20 cm may lead to considerable difficulties in the machine area (sticking of the cutter head, jamming of the shield) or in the back-up area (e.g., jamming of the back-up equipment, inadmissible convergences of the bored profile, damage to the tunnel support). Depending on the number and the length of the critical stretches, squeezing conditions may even call into question the feasibility of a TBM drive. On account of this, and bearing in mind the steady increase in the number of tunnels excavated with TBMs through so-called "difficult ground conditions", the topic investigated in this PhD thesis is of great practical relevance.Based upon case histories reported in the literature, Part I sets out firstly to give an overview of the specific problems of TBM tunnelling under squeezing conditions. Part II presents a computational model which simulates accurately and efficiently the advancing TBM and the installed tunnel support in one single computational step applying the so-called "steady state method". Part III advances a number of theory-based decision aids, which will support rapid, initial assessments to be made of thrust force requirements. Part IV investigates the complex problem of the interaction between the advancing TBM, the consolidating ground and the lining. Emphasis is thereby placed on the effect of the gross advance rate and the effect of ground permeability on shield loading during regular TBM operation (the boring process including short standstills) and during a long standstill.

Progetto E Costruzioni Di Gallerie

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Author : Pietro Lunardi
language : it
Publisher: HOEPLI EDITORE
Release Date : 2006

Progetto E Costruzioni Di Gallerie written by Pietro Lunardi and has been published by HOEPLI EDITORE this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Technology & Engineering categories.

Tunnels And Water Reports Of Main Speakers Water In Design Water In Construction

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Author : J. Manuel Serrano
language : en
Publisher:
Release Date : 1988

Tunnels And Water Reports Of Main Speakers Water In Design Water In Construction written by J. Manuel Serrano and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Tunneling categories.