Sökning: "dam safety"

Visar resultat 26 - 30 av 38 avhandlingar innehållade orden dam safety.

  1. 26. Stabilitly analysis of large structures founded on rock : an introductory study

    Författare :Fredrik Johansson; Håkan Stille; Anders Fredriksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggnadsteknik; Building engineering; Byggnadsteknik;

    Sammanfattning : Previous investigations of Swedish and international dams have shown difficultiesto assess the safety against failure in rock foundations. The problem was alsogiven additional interest in connection to the recent construction of the newbridge at Traneberg in Stockholm. LÄS MER

  3. 27. Numerical modelling considerations for analysis of concrete hydraulic structures subjected to high-frequency seismic loads

    Författare :Roghayeh Abbasiverki; Anders Ansell; Erik Nordström; Richard Malm; Peter Folkow; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Betongbyggnad; Concrete Structures;

    Sammanfattning : Concrete hydraulic structures are of great importance in today's society. When situated in areas with hard bedrock, these structures may become extra vulnerable to seismic excitations as these here are dominated by high-frequency vibrations which can have disastrous consequences for slender structures. LÄS MER

  4. 28. Investigating the streaming potential phenomenon using electric measurements and numerical modelling with special reference to seepage monitoring in embankment dams

    Författare :Andrew Patrick Bérube; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tillämpad geofysik; Applied Geophysics;

    Sammanfattning : A three-dimensional finite element computer program has been developed to numerically model the streaming potential phenomenon. The program can in fact calculate and display the primary and secondary potential distributions for any two coupled flows in a three dimensional domain. LÄS MER

  5. 29. Shear Strength of Unfilled and Rough Rock Joints in Sliding Stability Analyses of Concrete Dams

    Författare :Fredrik Johansson; Håkan Stille; Kaare Hoeg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoengineering and mining engineering; Geoteknik och gruvteknik;

    Sammanfattning : The horizontal water load combined with uplift forces implies that concrete damsare sensitive for sliding. At the same time, the safety of concrete dams againstsliding in the rock foundation is associated with large uncertainties. One of themain uncertainties regards the shear strength of rock joints. LÄS MER

  7. 30. On the behaviour of tailings dams : Management in cold regions

    Författare :Roger Knutsson; Jan Laue; Andy Fourie; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Sammanfattning : Associated to mining activities there is mine waste generated. The residues left over from mineralextraction processes are referred to as tailings, normally stored in surface tailings facilities. Thefacilities are usually confined by embankment dams, so called tailings dams. LÄS MER