Search for dissertations about: "rockbursts"

Found 3 swedish dissertations containing the word rockbursts.

  2. 1. The Potential of b-value Variations as Earthquake Precursors for Small and Large Events

    Author : Paiboon Nuannin; Roland Roberts; Ota Kulhanek; Bjorn Lund; Federico Guendel; Uppsala universitet; []
    Keywords : General; Frequency magnitude distribution; b-values; rockbursts; Andaman-Sumatra region; Zinkgruvan mine; December 26; 2004 earthquake; ALLMÄNT;

    Abstract : The potential of variations of b-values in the G-R relation, logN=a-bM as earthquake precursors for small events (rockbursts) in Zinkgruvan mine, Sweden and for tectonic (large) earthquakes in the Andaman-Sumatra region were investigated. The temporal frequency-magnitude distribution, b(t), of rockbursts in Zinkgruvan mine was examined using high quality data recorded during the period November 1996 to April 2004 with magnitude ranges from Mw= -2. READ MORE

  4. 2. Mining induced seismicity in Sweden

    Author : Kristina Larsson; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Abstract : The virgin stress state in the rock mass is disturbed by mining, which leads to locally increased or decreased stresses. The rock mass in Sweden is generally composed of high strength brittle rock types, so the risk of seismicity and rockbursts (violent failures) increase with increasing depth of mining due to increasing stress levels. READ MORE

  5. 3. Mine-scale rock mass behaviour at the Kiirunavaara Mine

    Author : Jessica Vatcher; Flavio Lanaro; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : The interaction of the geological and mining environments leads to a variety of forms of rock mass behaviour, including seismicity and falls of ground. A precise understanding, however, of the role of geology in rock mass behaviour experienced by Luossavaara-Kiirunavaara Aktiebolag’s (LKAB) Kiirunavaara Mine remains unknown. READ MORE