... to cement alkalis. This reactivity called alkali-aggregate reaction (AAR) is a slow reaction that causes the concrete to swell. Regarding the foundation, swelling of the concrete led to the transfer of stresses to the rock foundation. The intact rock is of high resistance and the rock mass of good quality...

...DANIEL JOHNSON MULTIPLE ARCH DAM, QUÉBEC, CANADA - ROCK FOUNDATION SAFETY ASSESSMENT Marco Quirion Hydro-Québec Production Unité Expertise en barrages 75, boul. René-Lévesque Ouest, Montreal, Québec, H2Z 1A4 CANADA ([email protected]) Innovations in Applied and Theoretical Rock Mechanics...

... ABSTRACT In this paper, the ultimate bearing capacity of a discontinuous rock foundation is investigated using limit analysis. Upper bound formulations are developed for a rock mass containing two orthogonal joint sets in which, the orientation of the first joint set was assumed to be 15°, 30...

... ABSTRACT The shear strength mobilized at the joint of a concrete dam over its rock foundation is the main element governing its stability. Realistic values of this strength are determined from laboratory direct shear tests of concrete-rock joint specimens obtained from core drilling...

... criterion Serrano MPa abutment rock foundation safety factor Upstream Oil & Gas Rock mechanics gravity concrete dam rock mass dam body geotechnical parameter jointed rock foundation principal stress roodbar lorestan dam allowable bearing capacity bearing capacity compression...

... Embankment dams are often constructed on soft rock foundations in Japan, so it is important to precisely predict deformation of the foundations due to fill placement at the design stage. In order to accurately evaluate the settlement and the strain of the rock foundation surface during...

... luftseitJichen Teil der Talsperrenbasis und nachfolgenden unkontrollierenden Deformationen des Talsperres sein. INTRODUCTION The Malpasset dam failure has once given an impulse for a deta- iled study of the behavior of a "concrete dam - rock foundation" system. Numerous researches conducted by various experts...

... dam foundation assessment structural geology alteration Reservoir Characterization power project Earthquake Upstream Oil & Gas variation geodynamic monitoring operation Russia foundation rock mass safety rock foundation Savich geodynamic process deformation monitoring...

... ABSTRACT: A new computational approaches for studies of stress-strain state and bearing capacity of "arch dam - rock foundation" system are presented here. Results of computational studies for a 190 m height arch dam under different conditions: continuous foundation, subvertical joint...

... reservoir geomechanics Upstream Oil & Gas Reservoir Characterization Wellbore Design Ertan wellbore integrity model test hydraulic fracturing abutment rock foundation rock mass complex rock formation normal load jointed rock mass physical model test rockmass Computation...

... ABSTRACT: Brief history of Rock Mechanics and dam foundation design. The number of embankment dams built on rock foundation is comparable to that of concrete dams (the most frequent type of very large dam built on rock foundations). Above and beyond investigation methods, mechanical analysis...

...The nonlinear analysis of three-dimensional FEM for a large gravity arch dam ." , )l ,. J I 1_ -, r l i! . considering the interaction with complicated rock foundation ' n ~ J i" 'I" ct. jj, ~' , Analyse tridimensionnelle non Iineaire aux elements finis pour un grand barrage-voOte-poids en...

... by Ukhov (1975) and Rosa & Zelensky (1967) on similar models revealed a rise in the modulus of deformation. In laboratory model tests carried out in the Department of Rock Foundations, Hydroproject (Gasiev, 1977) the modulus, of deformation first decreases with a rise of the plate width...

... ABSTRACT: Stressed-strained state of rock foundation and concrete dam in operation stage and in limit state as well as conditions of dam stability are analysed. Investigations are carried out for concrete gravity dam (with height of 110 m) of Kapanda hydroelectric station operating in three...

... damsites. The measured results indicate that the fill placement causes the compression of dam foundations and the decrease of permeability. Moreover, taking these results into consideration, the authors propose the effective designing of grouting for dam foundations, particularly weak rock foundations...

... II!lII_ Strength and bearing capacity of rock foundations of concrete dams Resistance et capaclte portante des fondations rocheuses des barrages en baton Festigkeit und Tragfahigkeit der FelsgrOndungen von Betonstaumauern D.D.SAPEGIN, The B.E.Vedeneev All-Union Research Institute of Hydraulic...

... (Fishman 1979; Fishman, Ukhov & Fadeev 1983) and some other publications indicate that failure of the rock foundations under concrete structures differs in some cases from the conventional shear mechanism which is usually presented as the sliding of the structure on the foundation...

... are usually obtained with some dispersion even on the same type and quality of a rock at the same point. Accordingly, it is necessary to naturally consider the influence of the dispersion of the values of mechanical properties in investigating the stability of the rock foundation in important structures...

... Engineering dam toe seasonal variation gidrotekhnicheskoe stroitelstvo vedeneev all-union research institute renewable energy Reservoir Characterization displacement power house pit rock foundation Contact Effect marchuk downstream wedge concrete dam power house section power...

... reinforcement rock foundation Anchor Artificial Intelligence Proc plane rock mass displacement contribution assumption safety continuiti foundation deformation Upstream Oil & Gas variation discontinuity prestressed anchor mechanics Theme 2 Rock foundations and slopes Site investigation...