Sökning: "overcoring"

Hittade 5 avhandlingar innehållade ordet overcoring.

  1. 1. Inversion and interpretation of hydraulic and overcoring stress measurements in the Äspö region, Sweden

    Författare :Daniel Ask; KTH; []
    Nyckelord :integrated stress analysis; least squares inversion; hydraulic fracturing; HTPF; overcoring; Äspö HRL;

    Sammanfattning : .... LÄS MER

  3. 2. New developments of the Integrated Stress Determination Method and application to the Äspö Hrad Rock Laboratory, Sweden

    Författare :Daniel Ask; KTH; []
    Nyckelord :Integration; Rock Stress; ISDM; Äspö HRL;

    Sammanfattning : This thesis presents new developments of the IntegratedStress Determination Method (ISDM) with application to the AspoHard Rock Laboratory (HRL), Oskarshamn, Sweden. The newdevelopments involve a 12-parameter representation of theregional stress field in the rock mass. LÄS MER

  4. 3. Rock stress measurements using the LUT-gauge overcorning method

    Författare :Bengt Leijon; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : With overcoring techniques, rock stresses are determined indirectly from measurements of the dimensional changes of a borehole, occurring when the rock volume surrounding the hole is isolated from the stresses in the host rock. This thesis describes the development and application of an overcoring technique. LÄS MER

  5. 4. Analysis of rock stress and rock stress measurements with application to Äspö HRL

    Författare :Beatrice Lundholm; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : The process of choosing a site for a nuclear waste repository means that many aspects have to be taken into consideration. One of these is that the repository has to be mechanically stable for a long time. The mechanical stability of the rock is very difficult to determine. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER