Repository logo

Browsing by Subject "roof stability"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Eksploatacja górnicza a zuskokowanie spągowej partii utworów cechsztyńskich w Kopalni »Rudna« KGHM, Polska Miedź S.A.
    (2007) Markiewicz, Andrzej; Suchan, Jarosław; Tomanik, Ryszard
    The tectonic deformation of Upper and Lower Permian rocks on the Fore Sudetic Monocline appears as subhorizontal displacements of the bottom part of Zechstein rocks in vicinity of polymetallic stratabaund orebody. The dislocations relate to the paleomorphology of the Rotligende/Zechstein boundary. The paper describes relations between the tectonic and structure zonation of the hostrock inside the paleohighs and the petrographical rebuilt of dolomite structure and the conditions of mining exploitation. The discussion can be practically apply in to geodynamic analyze of the hostrock and preparing the mining works.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    RUFUS 3G load bearing capacity monitoring system for providing diagnostics for powered roof support operations
    (Wydawnictwa AGH, 2021) Krasucki, Krzysztof; Kudłacik, Tomasz; Augustyniak, Krzysztof
    The Ziemowit part of the Piast-Ziemowit mine uses an active and passive load bearing capacity system for its powered roof support section, which allows for diagnostics, the selection of initial load bearing capacity, and control of the roof's impact on the longwall support. The diagnosis of powered roof support section operations by means of the load bearing capacity monitoring system shortens the search for faults. In underground conditions, it is difficult to diagnose failures related to the operation of the powered support, however, the mine is able to detect any irregularity on the mine's surface by qualified energomechanical dispatchers. The need to ensure contact between the support and the rock mass at the stage of operation is the basic criterion for the functioning of the works performed. Controlling the situation in the longwall related to the limited amount of falling roof rocks is an advantage of the proper use of the load bearing capacity monitoring system by employees.