Détermination de l'état de contrainte dans les massifs rocheux élastiques et peu perméables PDF Download
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Author: Philippe Charliez
Publisher:
ISBN:
Category :
Languages : fr
Pages : 282
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Book Description
Author: Philippe Charliez
Publisher:
ISBN:
Category :
Languages : fr
Pages : 282
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Book Description
Author: Kaveh Saleh
Publisher:
ISBN:
Category :
Languages : fr
Pages : 147
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Book Description
Possibilité à partir d'un essai de fracturation pressiométrique d'évaluer à l'état de contraintes et les caractéristiques élastiques de la formation
Author: F. Bonnechère
Publisher:
ISBN:
Category : Rock mechanics
Languages : fr
Pages : 204
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Book Description
Author: BERTRAND.. MAYEUR
Publisher:
ISBN:
Category :
Languages : fr
Pages : 327
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Book Description
LE PROJET DE TUNNEL DE BASE MAURIENNE-AMBIN, QUI TRAVERSERA LES ALPES SUR PLUS DE 50 KM DE LONGUEUR ET SOUS UN RECOUVREMENT DE TERRAIN ATTEIGNANT AU MAXIMUM 2500 M, POSE LE PROBLEME DE LA PREVISION DES ETATS DE CONTRAINTES NATURELLES DANS LES MASSIFS ROCHEUX ; LE COMPORTEMENT DU ROCHER PENDANT L'EXCAVATION AUSSI BIEN QUE LA STABILITE DE L'OUVRAGE EN DEPENDENT. POUR ETUDIER CETTE QUESTION COMPLEXE, NOUS AVONS EU RECOURS A PLUSIEURS APPROCHES COMPLEMENTAIRES. IL S'AGIT TOUT D'ABORD D'UNE ETUDE EN LABORATOIRE DU COMPORTEMENT MECANIQUE DU GNEISS D'AMBIN, VISANT EN PARTICULIER A QUANTIFIER PRECISEMENT SON ANISOTROPIE ELASTIQUE ; C'EST DANS CETTE ROCHE QUE LE RECOUVREMENT SERA MAXIMAL, ET DONC LA PREVISION DE CONTRAINTES PARTICULIEREMENT IMPORTANTE. NOUS AVONS ENSUITE INTERPRETE UNE SERIE DE MESURES DE CONTRAINTES IN-SITU REALISEES DANS QUINZE FORAGES DE RECONNAISSANCE A LA COTE DU FUTUR TUNNEL, ESSENTIELLEMENT PAR LA METHODE DES TESTS HYDRAULIQUES SUR FRACTURES PREEXISTANTES (METHODE HTPF). NOUS AVONS ENFIN EVALUE, AVEC L'AIDE DE LA MODELISATION NUMERIQUE, LE POIDS RELATIF DES DIFFERENTS PARAMETRES INFLUANT SUR L'ETAT DE CONTRAINTES NATUREL : LA TOPOGRAPHIE, L'ANISOTROPIE ELASTIQUE DES ROCHES ET LA TECTONIQUE. IL RESSORT DE CETTE ETUDE QUE DANS LE SECTEUR CONCERNE PAR LE TUNNEL MAURIENNE-AMBIN, LA TECTONIQUE COMBINEE A LA TOPOGRAPHIE SEMBLE ETRE LE FACTEUR PREDOMINANT, QUI EXPLIQUE UNE BONNE PARTIE DES OBSERVATIONS DE TERRAIN. L'ANISOTROPIE DES ROCHES COMME LE GNEISS D'AMBIN, DONT LE RAPPORT DES MODULES ELASTIQUES EST PROCHE DE 1.5, N'EST QU'UN PARAMETRE DE SECOND ORDRE, MAIS IL INFLUE TOUT DE MEME SUR LES VALEURS ET LES ORIENTATIONS DES CONTRAINTES PRINCIPALES.
Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472
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Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Author: John Henry Lorentz
Publisher: Historical Dictionaries of Asia, Oceania, and the Middle East
ISBN:
Category : History
Languages : en
Pages : 570
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Book Description
Provides an overview of specific events, movements, people, political and social groups, places, trends, and chronology. Allows for considerable exploration of a number of historical and contemporary topics and issues. The modern period, defined as 1800-present, is covered extensively.
Author: Malcolm D Bolton
Publisher: Universities Press
ISBN: 9788173714252
Category : Soil mechanics
Languages : en
Pages : 464
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Book Description
Covers all the soil mechanics and foundation engineering topics that are commonly included in civil engineering degree courses, and provides a number of springboards into related advanced topics. Although it is intended principally to satisfy the needs of student civil engineers, this guide should also prove useful to those practicing engineers who are unaware of the powerful and elegant reconstruction of the subject which has been made possible by the recent concepts of plasticity, dilatancy and critical states.
Author:
Publisher:
ISBN: 9780580402784
Category : Building sites
Languages : en
Pages : 86
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Book Description
Site investigations, Construction operations, Soils, Soil surveys, Soil sampling, Soil testing, Ground water, Rocks, Safety measures, Occupational safety, Field testing, Excavations, Soil drilling
Author: Terry W. Sturm
Publisher: DIANE Publishing
ISBN: 1428995048
Category : Bridges
Languages : en
Pages : 147
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Book Description
Experimental results and analyses are given in this report on bridge abutment scour in compound channels. Experiments were conducted in a laboratory flume with a cross section consisting of a wide floodplain adjacent to a main channel. The embankment length, discharge, sediment size, and abutment shape were varied, and the resulting equilibrium scour depths were measured. Water-surface profiles, velocities, and scour-hole contours were also measured. In the report, a methodology is developed for estimating abutment scour that takes into account the redistribution of discharge in the bridge contraction, abutment shape, sediment size, and tailwater depth. The independant variables in the proposed scour formula are evaluated at the approach-channel cross section and can be obtained froma one-dimensional water-surface profile computer program such as the Water-Surface Profile Program (WSPRO). The proposed scour evaluation procedure is outlined and illustrated, including consideration of the time required to reach equilibrium scour. The proposed methodology is applied to two cases of measured scour in the field.
Author: Shahid Javed Burki
Publisher:
ISBN:
Category : History
Languages : en
Pages : 472
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Book Description
Pakistan is unlike most other countries in the emerging world. It is one of the two nations – the other being the state of Israel – founded on the basis of religion. Although it was created to provide a homeland for the Muslim community of British India, in its original form it was able to accommodate only about half of the people of Islamic faith who lived in the subcontinent. Pakistan’s birth in 1947 resulted in one of the largest movements of people in human history when some 14 million people left their homes, with 8 million Muslims leaving India for what is now Pakistan and 6 million Hindus and Sikhs moving in the opposite direction. This was the first large-scale incidence of ethnic cleansing the world was to witness. --
