Brittle Rock Behaviour Within High-pressure Condition
Author(s)
J. Vacek and V. Dolezel
Abstract
Brittle rock behaviour within high-pressure
condition
J. vacekl, V. ~ o l e i e l ~
'CTU prague, Klokner Institute, Czech Republic
'pardubice University, Czech Republic
Abstract
This paper deals with to the behaviour of open rock that occurs, for example,
during long wall mining in coalmines, in deep tunnel, or shaft excavation. Long
wall instability leads to extrusion of rock mass into an open space. This effect is
mostly referred to as a bump, or a rock burst. For bumps to occur, the rock has to
possess certain particular rock burst properties leading to accumulation of energy
and the potential to release this energy. Such materials may be brittle, or the
bumps may arise at the interfacial zones of two parts of the rock, that have
principally different material properties. The solution is based on experimental
and mathematical modelling. These two methods have to allow the problem to be
studied on the basis of three presumptions:
the solution must be time dependent
the solution must allow t
Keywords
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