Open AccessWyznaczenie pola obciążeń generowanych wybuchem wydłużonych ładunków cylindrycznych
Author(s) -
Andrzej Papliński
Publication year - 2018
Publication title -
materiały wysokoenergetyczne
Language(s) - English
Resource type - Journals
ISSN - 2083-0165
DOI - 10.22211/matwys/0169
Subject(s) - mechanics , constant (computer programming) , physics , detonation , stress (linguistics) , field (mathematics) , modulus , explosive material , geometry , mathematics , chemistry , linguistics , philosophy , organic chemistry , computer science , pure mathematics , programming language
Dynamic load field generated in the rock mass by detonation of elongated cylindrical charges is determined. In practical blasting operations charges of dozen and more meters long are employed. Therefore, in the ambient medium around of the hole in which the charge detonates, a stationary field of stress and displacements is established. In the paper a stationary solution is presented which estimates the fields of pressure as well as of radial and axial velocity generated by a moving load propagating with constant velocity along the cylindrical hole cut in an infinite medium. The loaded medium is described by a one-wave model in which the small displacements speed is determined by the magnitude of the bulk modulus. The solution is estimated using integral transformations. A sample solution is provided, or a constant-value moving load acting on the internal surface of the hole for a given interval of time.