AbstractFourteen kinds of rock specimen and rock mass were tested to find the main rock mass characteristics affecting the drilling rate of a bit in rotary percussion by 2 hand-type electric and air hammer drills. It was found that the drilling rate of the bit, V (cm/min), consuming constant rotary percussion power of 1050 W could be expressed as functions of the coefficient of crack of rock mass Crmr, the Shore hardness Hrms or the amount of Los Angeles abrasion U or the radial compressive strength σrmt (MPA) of the rock specimen, and the bit diameter D (mm).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Drilling rate of rotary percussion drill bits and rock characteristics


    Beteiligte:
    Muro, Tatsuro (Autor:in)

    Erschienen in:

    Journal of Terramechanics ; 25 , 3 ; 191-199


    Erscheinungsdatum :

    1988-01-01


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Drilling: Development of Rock Drill

    Watanabe, H. | British Library Online Contents | 1996


    Modelling approaches for an ultrasonic percussion drill

    Potthast, C. | Online Contents | 2007


    Steerable percussion air drilling system

    Bui, H.D. / Meyers, J.A. / Yost, A.B. II | Tema Archiv | 1998


    DRILLING DEVICE FOR EXCAVATION AND METHOD OF REPLACING DRILL BITS USING THE SAME

    BAEK JONG AHN | Europäisches Patentamt | 2017

    Freier Zugriff

    Absorption in laser drilling in percussion regime

    Schneider, M. / Berthe, L. / Fabbro, R. et al. | Tema Archiv | 2007