Sökning: "rockfall"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet rockfall.

  1. 1. Evaluation of structurally controlled rockfall hazard for underground excavations in seismically active areas of the Kiirunavaara mine

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Manuel Alberto Fuentes Espinoza; [2023]
    Nyckelord :Structurally controlled rockfalls; rockfalls due to seismic shaking; sublevel caving; fork layout; Unwedge; wedge analysis; deterministic analysis; probabilistic analysis;

    Sammanfattning : Sublevel caving operations at great depths are subjected both to large stress concentrations that are redistributed as the mining front progresses and to mining-induced seismicity. This is the case for Kiirunavaara mine, Sweden’s largest underground mine. LÄS MER

  3. 2. IoT - based Microseismic Detector

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Anton Lindgren; [2023]
    Nyckelord :IoT; accelerometer; microphone; BLE; embedded;

    Sammanfattning : Rockfall, which is the detachment of rocks from a mountain, is a major hazard in the mining industry. To help combat this issue, this thesis aims to develop a sensor platform that is able to detect both the potential risk for rockfall and if any rocks do hit the ground. LÄS MER

  4. 3. Methods for rockfall risk assessment and estimation of runout zones: A case study in Gothenburg, SW Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Laura Catalina Agudelo Motta; [2020]
    Nyckelord :Rockfall hazard; rockfall simulation; Gothenburg; Fjällbo; runout zones; Earth and Environmental Sciences;

    Sammanfattning : Rockfalls occur around Sweden every year and the country lacks a national risk evaluation and an adequate regulatory framework for construction related to this natural hazard. The aim of this study is to address this problem by mapping areas under possible threat of rockfalls, considering two fundamental aspects: i) identification of the source areas and ii) estimation of the runout zones. LÄS MER

  5. 4. Evaluation of the rock support system subjected to dynamic loads in Kiirunavaara

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

    Författare :Simon Krekula; [2017]
    Nyckelord :Rock mechanics; Rockburst; Seismicity;

    Sammanfattning : LKAB’s underground mine in Kiirunavaara has experienced an increasing seismic activity the last ten years. This seismic activity is caused by the stress redistribution resulting from the mining method of large-scale sublevel caving. The energy from the seismic events propagate in the rock mass as seismic waves. LÄS MER

  7. 5. Rockfalls from rock cuts beside Swedish railroads : A full scale fieldtest, to investigate rockfalls and how rock bounces

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Thomas Thorbjörnson Lind; [2016]
    Nyckelord :Rock cuts; rockfall; field test; coefficient of restitution; railway; Sweden; risk; Bergsskärning; stenras; fältförsök; coefficient of restitution; järnväg; Sverige; risk;

    Sammanfattning : Rockfalls is a major problem around the world, if they occur in populated areas, they can cause major damage to infrastructure, injure or kill people. For this reason, it is important to be able to predict where the risk of rockfalls and how to prevent and protect populated areas from them. However, it is no easy task to predict rockfalls. LÄS MER