Sökning: "refraction seismics"

Hittade 4 uppsatser innehållade orden refraction seismics.

  1. 1. First-arrival traveltime tomography of active-source data in the Kansanshi copper mine, northern Zambia

    Magister-uppsats, Uppsala universitet/Geofysik

    Författare :Vessela Hobson; [2019]
    Nyckelord :refraction seismics; tomographic inversion; Zambian Copperbelt; copper;

    Sammanfattning : Sedimentary rock-hosted deposits are a major source of copper and cobalt, with the Neoproterozoic central African Copperbelt being among the largest Cu-Co provinces in the world, accounting for around 15% of its copper resource. The deposits occur primarily in the carbonates and siliciclastic sediments overlying the basement, and formed during early diagenesis (around 820 Ma) and late diagenesis/metamorphism during the Pan-African Orogeny (580-520 Ma). LÄS MER

  3. 2. Kombinerad förundersökning för tunnlar med resistivitet och refraktionsseismik i urban undervattensmiljö

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Författare :Elisabeth Lindvall; Erik Warberg Larsson; [2016]
    Nyckelord :Geophysics; underground; structures; tunneling; construction; urban; TRUST; seismic; resistivity; underwater; survey; geofysik; resistivitet; seismik; undervatten; undersökning; Technology and Engineering;

    Sammanfattning : Due to expanding cities and increasing population infrastructure needs to expand in a safe and sustainable way with little effect on the environment and economy. Years of urbanization doesn’t make it easy, no free spaces are available and culture marked buildings are protected. The only alternative left is to construct in layers. LÄS MER

  4. 3. Structural model of the Lambarfjärden area from surface and subsurface data in connection with the E4 Stockholm bypass

    Master-uppsats, Berggrundsgeologi

    Författare :Anna Vass; [2012]
    Nyckelord :Lambarfjärden; sturctural model; fracture; E4 Stockholm Bypass;

    Sammanfattning : The present Master thesis is written in connection with the E4 Stockholm bypass, which is a future motorway linking northern and southern Stockholm, and will mostly run through tunnels. The bypass will cross the Lake Mälaren in the Lambarfjärden area, where a fault is indicated on the geological maps, which would create risks for tunneling. LÄS MER

  5. 4. Geofysiska mätmetoder för prospektering till ballastmaterial

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Erik Bohlin; Ludvig Landen; [2008]
    Nyckelord :prospektering; ballastmaterial; LosAngeles test; microDeval test; kulkvarnstest; resistivitet; IP; normaliserad IP; refraktionseismik; tomografi; geofysik; geologi; aggregate prospecting; electrical resistivity imaging; induced polarization; normalized induced polarization; refraction seismics; tomography; studded tyres test; geophysics; geology; Earth and Environmental Sciences;

    Sammanfattning : The Swedish rock-mass industry is currently in a transition period because new rules and regulations strongly limit the possibility to use naturally sorted aggregates for construction and concrete purposes. Furthermore, research and development within the industry is more oriented towards crushed bedrock aggregates. LÄS MER