... ABSTRACT: In order to evaluate the influence of the surface morphology on the mechanical behavior of twelve natural rock joints, very accurate topography measurements of joint surfaces were performed before and after shear tests. The quantitative description of surfaces was performed using...

...- sure (Figure 3). The maximum input pressure of the fluid is 20 MPa, and the maximum input flow is about I liter per minute. The morphology ofthe two rock walls can be measured by a laser beam (diameter: 0.25 rnrn, sampling step: 0.15 mm/128 x 128, vertical resolution: 0.0 I mm) at any stage...

... the particular site configuration according both to the natural topography of the mountain surface and to the modified morphology produced by the open pit excavation, as well as the new underground stopes. 2. OUTLINE OF SITE, GEOLOGY AND GEOSTRUCTURAL SETTING, ROCK MASS CHARACTERISATION The quarry site...

... profile. Three-dimensional characterisation of the surface morphology would obviously yield more information. Next, the dependence of the shear strength on the direction of the motion was studied by shearing identical surfaces in different directions. A good correlation was found between the shear...

... rotational slide morphology rotational slide structural geology Island river valley Achada Madalena evolution basaltic lava flow lava flow deposit schematic cross section SLIDES IN MADEIRA ISLAND RODRIGUES, DOMINGOS c.E.M. - Madeira University, Funchal, PORTUGAL, dmr@uma.pt AYALA-CARCEDO...

...Eurock '96, Barfa (ed 1996 Bafkema, Rotterdam. ISBN 90 5410843 6 Rock joint shear mechanical behavior with 3D surfaces morphology and degradation during shear displacement Comportement mecanique avec modelisation 3D d 'un joint en cisaillement Das mechanische Verhalten und die 3D-Modellierung der...