Failure Mechanics Of Slope Slip With
Predestinate Slip Plane
Author(s)
J. Vacek & S. Sedláčková
Abstract
Failure of rock mass is not a static process, but has its own history. Its duration
varies from several seconds to several hundred years. Rock mass movements are
often measured in hundreds of metres and significantly change the formation’s
original shape. Failure mechanics can be studied experimentally. On
nonhomogeneous models we can observe the onset of failure (prior to and during
the failure, deformations increase on sliding surfaces), the chronology of various
stages of failure (cavings, slides), and the final shape of the rock mass. We can
also observe influences exerted by modelled joints, adits and other features upon
the failure history and shapes of cavings and slides.
Research will be concentrated on the stability of internal tailings of Northern
Bohemia open coal mines. Tailings will be strengthened by piles that join bed
rock with tailing over the predestinated slip plane.
Methods used for the study of geotechnical problems have to allow for two
basic presumptions:
• results must be time dependent
• results must allow the creation of joints in the rock mass before the
study event and during the event must allow for the moving of rock
along joints, the opening of joints and creation of new joints. The
direction of modelled joints must be similar to reality, i.e. their direction
and inclination must be the same as the real ones. These measures make
it possible to create the structure of modelled rock mass similar to real
ones. Filling of cracks must be equivalent to real ones.
A scale physical model from equivalent materials and mathematical solutions
were used as a basic method for the study of geotechnical problems.
Keywords: failure mechanics, failure history, physical model, mathematical
model, stability of rock mass, jointed rock mass.
Keywords
failure mechanics, failure history, physical model, mathematical
model, stability of rock mass, jointed rock mass.
Related Book
Other papers in this volume
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