Sökning: "injektering sprickor"

Hittade 5 uppsatser innehållade orden injektering sprickor.

  1. 1. Groundwater Inflow into Fractured Rock Tunnels

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Mariam Beydoun; [2022]
    Nyckelord :groundwater inflow; rock tunnel; discrete fracture networks; discrete fracture-matrix; equivalent porous medium; Darcy’s Law; Reynold’s equation; cubic law; grundvatteninflöde; bergtunnel; discrete fracture networks; discrete fracture-matrix; equivalent porous medium; Darcy’s Law; Reynolds equation; cubic law;

    Sammanfattning : Groundwater inflow is a challenge in construction of tunnels in fractured bedrocks since it affects the safety function of tunnels and leads to potential problems in the surrounding environment, such as subsidence, dropdown of the groundwater table. Quantification of groundwater inflow into the tunnel is also important for design of grouting in the construction of the tunnel. LÄS MER

  3. 2. State of the Art Report on Cement Based Grout Properties and Dynamic Grouting

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Bowen Meng; [2021]
    Nyckelord :Dynamic grouting; filtration; rheology; grouting phase;

    Sammanfattning : Dynamic grouting in rock mass has been studied since 1985 while desired penetration in rock masses with fine fractures is still a challenge because of uncertainty and complexity in the grouting process. This has attracted the attention of researchers in different countries and regions, especially in some Nordic countries such as Sweden. LÄS MER

  4. 3. The Impact of Fracture Orientation on the Choice of Grout Fan Geometry - a Statistical Analysis

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Fredrik Osterman; [2019]
    Nyckelord :Rock Fissure Grouting; Grout Fan Geometry; Geology; Discrete Fracture Network; Sprickinjektering i berg; skärmgeometri; geologi; diskreta spricknätverk;

    Sammanfattning : Water ingress into rock tunnels is a problematic phenomenon – especially in urban areas – as a lowered groundwater table may cause harmful settlements. Furthermore, too much ingress can be an incentive for the environmental court to halt the tunnel process, in order to protect the nature as part of a national interest. LÄS MER

  5. 4. Undersökning av påverkan på hydraulisk konduktivitet i förorenat område efter in situ-saneringsförsök

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Julia Björn; [2019]
    Nyckelord :Hydraulisk konduktivitet; in situ-sanering; slugtest; förorening; Tvätteriet Alingsås; Earth and Environmental Sciences;

    Sammanfattning : I dagsläget bedömer Naturvårdsverket att det finna ca 85 000 konstaterade eller misstänkt förorenade områden i Sverige. En förespråkad åtgärdsstrategi för att sanera förorenad mark- och grundvatten är in situ-sanering då de anses kostnadseffektiva och hållbara. LÄS MER

  7. 5. Application of Dynamic Grouting to Improve the Grout Spread Using Varying Aperture Long Slot (VALS) : AN EXPERIMENTAL STUDY

    Master-uppsats, KTH/Jord- och bergmekanik; KTH/Byggvetenskap

    Författare :Robabeh Hosseini; Yalta Steven; [2018]
    Nyckelord :grout penetrability; filtration tendency; varying aperture long slot; sealing; cement-based grout; dynamic grouting; bruksinträngningsförmåga; filtrationstendens; VALS; tätning; cementbaserade injekteringsmedel; dynamisk injektering;

    Sammanfattning : In the past centuries, grouting has been one of the most common techniques in geotechnical engineering to strengthen and seal underground structures. Concerning increasing demands for tightness and cost efficiency, cement-based grout has been one the most frequent used materials. LÄS MER