Sökning: "mwd data"

Hittade 4 uppsatser innehållade orden mwd data.

  1. 1. Identification and strength classification of weakness zones in the Garpenberg mine based on measurement while drilling (MWD)

    Master-uppsats, Luleå tekniska universitet/Geoteknologi

    Författare :Ioannis Peroulakis; [2022]
    Nyckelord :Drilling; MWD; Garpenberg; Mining; Geotechnics;

    Sammanfattning : Boliden’s Garpenberg mine produces Zn-Pb-Ag(Cu-Au) using a sublevel stoping with pastefill mining method. The orebody is strongly affected by the existence of weakness zones mainly consisting of Talc Schist and Phlogopite Schist which affect the design, planning and production of the stope. LÄS MER

  3. 2. Monte Carlo Simulations of Bowing Effects Using Realistic Fuel Data in Nuclear Fuel Assemblies

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad kärnfysik

    Författare :Marcus Westlund; [2019]
    Nyckelord :bowing effects; fuel assembly perturbations; nuclear; serpent; monte carlo;

    Sammanfattning : Deformations of nuclear fuel assemblies have been observed in nuclear power plants since the mid-90s. Such deformations are generally called bowing effects. LÄS MER

  4. 3. The influence of weakness zones on the tunnel stability based on investigations in Bodøtunnelen

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geoteknologi

    Författare :Viktor Renström; [2016]
    Nyckelord :Rock mechanics; Numerical modeling;

    Sammanfattning : When planning for a tunnel, the ground conditions in which the tunnel is going to be excavated through will be investigated to different extent. Lack of relevant pre-investigation data or misinterpretations of the available data can cause both economical and/or unexpected stability problems. LÄS MER

  5. 4. Study of ethylene/propylene polymerization, using a 4th generation Ziegler-Natta catalyst: Effect of external donor and feed ratio on polymerization

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för kemivetenskap (CHE)

    Författare :Seyedeh Shafagh Dehghani; [2012]
    Nyckelord :Ziegler-Natta catalysts; Electron Donor; Copolymerization; Polyolefins;

    Sammanfattning : A fourth generation multiple site Ziegler-Natta catalyst was used to synthesize ethylene and propylene homo-and copolymers in the presence of hydrogen. This type of catalysts produce polymers with broader molecular weight distribution (MWD), chemical composition distribution (CCD) and stereoregularity than other coordination polymerization catalysts since it has more than one active site. LÄS MER