... the peak soil substance strength, and typical residual strength values. Shear strength on soil fissures approach residual strength. Failure therefore seems to occur through a combination of turbulent or rolling shear of the soil substance and sliding shear on fissure surfaces. Fissure properties...

... railway rainfall compactness settlement kPa expansive soil strength gravitational stress internal friction angle centrifuge test slope angle fissure ENGINEERING PROPERTIES OF EXPANSIVE SOIL AND CENTRIFUGE TEST ON EMBANKMENTS MADE OF THE SOIL Wang Ying1, Xie Qiang2 ABSTRACT Based...

... parpen 15 cm and 10 cm wide with a void space of 10 cm in between the 2 partitions. natural water content chemical composition construction materials relative hum idity mouroux soil profile fissure light construction inamena structural element aggressive environment construction...

... Tableau 2 Resistances en compression et en traction a 28 jours des coulis de ci- ment (echantillons conserves dans l'eau a 23°C 2.3 Injection d'eprouvettes fissurees La fissure, a injecter, consideree dans l'essai de permeabilite est approximati- vement perpendiculaire a l'axe de l'e- prouvette et se...

...) obliques au chargement uniaxial, et biaxial (PMMA uniquement). Quelque soit l'inclinaison de l'entaille, la classique fissure branchee est toujours initiee perpendiculairement au plan tangent à son bord, alors que la distance racine de fissure-extremite de l'entaille s'accroît avec cette inclinaison...

... longueur de la zone fissuree ou endommagee à la pointe de la fissure dès le debut de l'essai permet de rendre compte de la plus grosse partie des ecarts observes. INTRODUCTION La mecanique de la rupture qui a pour finalite d'etablir des relations entre les contraintes, la taille et la localisation...

... SOMMAIRE: Cette etude de fracturatlon thermique des roches, bien que generale, est replacee dans le cadre de la geothermle profonde. Lors de l'exploitation dun site geothermique, la circulation dans le massif fissure dun fluide plus froid que la roche a pour effet de favoriser la propagation...

... developpement de la fissuration. Il apparaît egalement une anisotropie des coefficients de dilatation dans les granites provoquee par La fissuration initiale. 1 INTRODUCTION Une elevation de temperature produit une dilatation des cristaux et dans certains cas des modifications d'ordre mineralogique. Le...

...<rmterial sirrulating chalk. 3 TESTS ()Ij t.lX>EL EXCAVATI()IjS IN FISSURED WEAK MATERIALS Too rrooet ~r irrents Y.ere comcted en rhYsical rrcoels of circular excavatims in sjrrulated t issared shale. Tre test blccks (D<D<40 an) erefabr icated by acoessrve casting of layers of a veal...

... OF CRITICAL WATER LEVEL OF STRATIFIED AND J0INTED ROCK WITH BEM: The capacity of the unlined pressure tunnels in jointed rock to endure the internal water pressure are mainly influenced by the following factors: Mechanical properties of rock; The extents and orientations and dip of joints and fissures...

... acoustic emission investigation rupture partir emission importante Reservoir Characterization acoustique emission acoustique apparition contrainte civil engineering application du materiau modèle materiau surveillance fissure Supervision APPLICA TION DE L'EMISSION...

..., while circumferential stress, i.e., tention, is of the same amount. consequently, radial fissures in the borehole wall are produced because of this tensil stress mentioned above that occureds in the direction of circumference. Acording to M. Rocha et al. (1967), displacement in the borehole wall...

... the design methods, finite elements, analogical methods or small-scale models are in wide use elsewhere. So finally the only concept truly proper to Rock Mechanics is that of fissured material and of discontinuous medium: typical Rock Mechanics research is mainly centred on the properties related to fissures...

... Summary The method has been described and also the apparatus for air blowing into the ground in order to determine the cracking condition of mine root and particularly to fix the interstratal fissures. Examples are given of precise location of fissures and of their distance from the roof...

... cylindrical failure surface This tne: of ta.- ilure which USUally GO.curs in slopes that are bu11t ot soil, can also take place in rock mass where fissures, bedding sur- faces and craoks are randomly distributed and do not show any distinct direotions favourable to f ilure. (b) failure which results from...

...'- - - Summary The paper in short describes the terrain composition, classification of the discontinuity in the rock mass on the basis of fissures stage, calcu- lation of rock mass stability with establishing of real important facts and technical measures for sanation of the labile parts of the rock massive...

... working fissure compressive strength injection granite consumption Wladyslaw Milkowski D. Eng. Tadeusz Szwedzicki. Eng. Central Mning Institute Katowice USE OF EPOXY RESIN FOR STRENGTHENING WAT_LS OF NARRO": WORKINGS lIPMMEHEImE anOKCMJ\HOH CMOJlll ,l{Jrif YKPEJTJfEFmil BOROB Y3RMX BUPAEOTOK...