... detonator and the short build by laying bricks in outer shaft wall are also adopted. With these methods, the construction becomes safer, faster, with higher quality and more economic. The vertical shaft in Xuandong is about 832.0 m in depth and 6.0 m in diameter and its frozen foundation rock is 36.5 m high...

... on the revision of the guidelines, power utilities currently re-evaluate the seismic stability of their nuclear power plants. This paper describes the concept and details of evaluations on seismic stability of foundation rock and surrounding slope in the power plants. 1 ASEISMIC DESIGN CONCEPT OF NUCLEAR POWER...

... necessary. Urft dam Dam and foundation rock The Urft dam has a height of 58 m and a width at the foundation level of approximately 50.5 m. The 226-metrelong dam crest has a curvature with a radius of 200 m. The Urft reservoir has a storage volume of approximately 45 million m 3 (Fig. 1). The rock...

... and rough, and they often have a limonite coating. Upstream Oil & Gas displacement Croatia reservoir geomechanics strength category Reservoir Characterization rock fragment criterion classification equilibrium design load foundation rock foundation type foundation base foundation...

... with several security mesures permitted the design of a pattern of rock bolts able to assure the necessary improvement of the foundation rock of the dam. RESUME: Sur l'île de Sardaigne en Italie, la construction d'un barrage-poids a ete prevue. Puisque les proprietes geotechniques trouvees pendant...

..., especially shallow areas, are expected to deform due to the loading of fill placement. If the foundation rocks themselves are consolidated and the above-mentioned joints or fissures are closed, the permeability of foundations will decrease. The authors feel that investigations on the quantitative...

... studies of geological discontinuity of foundation rocks. In the Sixth five Year Plan (1980–85) a major irrigation development programme has been launched in Madhya Pradesh, the heart of India. A few examples of projects where difficult foundation conditions were encountered are described below. RESUME...

... SUMMARY: At the beginning of this paper the authors give a brief description of the main geological conditions of the foundation rock under the second-channel spillway of the Gezhouba Project built across the Yangtze. They subsequently describe a comparative study of measures taken to improve...

... in the dam and in the foundation rock so as to follow the behaviour of the structure right from the initial stages of construction. 2 GEOLOGICAL SITUATION The reservoir is located in metamorphic rocks of the Calabride complex. In the gorge area two main units, known as "biotitic gneiss" and "white...

... Summary Construction of a composite dam with a masonry spillway across the river Tawa in Madhya Pradesh is in progress. The foundation rock consists of soft stratified sandstone with sandwiched thin shale layers. The paper describes the studies made in-situ as well as in the laboratory...

... of large gravity dams, founded on solid rocks, are negligible. Thus the settlements of the 95 m high Orlik dam in Czechoslovakia amounted 8 millimeters. Even when the compressibility of the foundation rock is not out of concern, the settlements are relatively small, as was the case of the Vír dam...

... was contributed at the Congress of Lisbon in 1966[1]. The investigations reported here, and carried out with the co-operation of Fondazione Lerici, concern the foundation rocks of four dams of recent construction. The aims of the research may be summarized as follows: 1. To obtain a confirmation of the degree...

... of recording instruments has also been improved, in order to obtain the utmost from all possible uses of the sparker and of sonic-log for investigation of foundation rocks; as well as to allow a better interpretation of results. Finally, a probe to measure the inclination of bores is described; it enables...

... to determine the deformation of the foundation rock under loading; those deformations are a function of the modulus of elasticity and Poisson's ratio of the rock. As preliminary investigation for the design of Tana Termini dam on the Lima river (Lucca), 130 m high, in situ seismic tests were performed during...

... of the material [2]. It is common knowledge that in recent times improved modelling has made it possible to carry out tests on dam- mountain complexes, reproducing not only the general deformability characteristic of the foundation rocks, in- dicated by the modulus of elasticity, but also the main geological...

... Upstream Oil & Gas calculation radial displacement foundation rock diameter change Reservoir Characterization reservoir geomechanics der orthotrop-elastischen moduln strength circular hole deformation modulus internal pressure displacement elasticity orthotropic characteristic...