Record details

Title
    Rock mass fracturing in main gate roof behind advancing longwall face
Author
    Koníček, Petr
    Kukutsch, Radovan
    Ptáček, Jiří
    Vavro, Martin
    Waclawik, Petr
Conference
    5th International Colloquium on Geomechanics and Geophysics (24.06.2014-27.06.2014 : Ostravice, Karolínka, Česká republika)
Language
    anglicky
Publication type
    abstrakt
Source title - monograph
    5th International Colloquium on Geomechanics and Geophysics. GECO 2014. 5
Pages
    S. 45-46
Notes
    Autoři celkem: 5
    Rozsah: 2 s. : P
Subject category
    fracturing zone prediction
    longwall exploatation
    main gate
    rock mass fracturing
    RQD testing
Keyword
    Advancing
    Behind
    Face
    Fracturing
    Gate
    Longwall
    Main
    Mass
    Rock
    Roof
Abstract (in english)
   To increase the stability of roadways, high cable bolts and short steel beams are increasingly used nowadays, which should lead higher stability of the supporting steel arches during both driving of roadways and primarily during mining of longwall panels in the Czech part of the Upper Silesian Coal Basin. This high anchoring is also obtained by the substitution of middle hydraulic props used to stabilize steel arches support ahead of the advancing longwall. If the roadways are re-used, high cable bolts are used to subsequently stabilize a support frame construction behind the advancing longwall. Anchoring in a high non-fracturing rock mass of a roadway roof is necessary for the effective function of these cable bolts.
Contributor
    AV ČR Brno, Ústav geoniky
Contributor code
    AV ČR, ÚG
Source format
    U
Import date
    24. 10. 2014