Now showing items 1-7 of 7

    • Local reinforcing of footing supported in the destroyed rock massif 

      Sakhno, I; Isayenkov, O; Rodzin, S (National Mining University, 2017-03-30)
      Purpose. Justification of feasibility of non-explosive destruction of hard rock during in-seam workings based on the obtained dependences related to changes of physical and mechanical properties of non-explosive destructive ...
    • Method of simulating rock mass stability in laboratory conditions using equivalent materials 

      Stupnik, M; Kalinichenko, V; Pysmennyi, S; Fedko, M; Kalinichenko, O (National Mining University, 2016-09-30)
      Purpose. To determine the qualitative composition of the equivalent material of a laboratory model representing Kryvyi Rih iron-ore basin ground, as well as to develop a method to determine its quantitative composition for ...
    • Neural simulation-based analysis of the well wall stability while productive seam penetrating 

      Katanov, Yuriy; Vaganov, Yuriy; Cheymetov, Matvey (Dnipro University of Technology, 2021-12-30)
      Purpose is the development of mathematical models to evaluate deformation of parameters of the rock mass-well geological and engineering system within the anisotropic media. Methods. Both mathematical and neural modeling ...
    • Studies of new nonadhesive anchoring 

      Sakhno, I; Sakhno, S; Kurdiumow, D; Shvets, I (National Mining University, 2018-06-30)
      Purpose is to develop anchoring with nonadhesive high-strength roof bolting in terms of large pre-destructive deformations and its testing under laboratory conditions. Methods. Laboratory studies of hydration hardening ...
    • Studying a crack initiation in terms of elastic oscillations in stress strain rock mass 

      Sdvyzhkova, O; Golovko, Yu; Dubytska, M; Klimenko, D (National Mining University, 2016-06-30)
      Purpose. Deriving the criterion of a crack (joint) initiating under simultaneous effect of the rock stress state and elastic oscillations generated by an external source is the research purpose. Determining the quantitative ...
    • The impact of vibration mechanism’ installation place on the process of retrieving stuck drill pipe 

      Moisyshyn, V; Levchuk, K (National Mining University, 2016-09-30)
      Purpose. The present paper studies the dependence of the dynamic oscillatory movements in the area of drill string sticking on the parameters of vibrating mechanism and place of its installation in the heavy weight drill ...
    • Метод определения неупругих сопротивлений при свободном качении колеса по рельсу 

      Франчук, В. П.; Франчук, Всеволод Петрович; Franchuk, V.; Зиборов, К. А.; Зиборов, Кирилл Альбертович; Зіборов, К. А.; Зіборов, Кирило Альбертович; Ziborov, K. (Видавництво НГУ, 2017)
      С учетом неупругих сопротивлений при взаимодействии контактирующих тел, представленных в форме комплексного модуля упругости, получены аналитические зависимости для определения текущего значения усилия на площадке контакта; ...