|
Showing 1 - 2 of
2 matches in All Departments
This book focuses on the permeability of the foundation of dams,
how to determine their state and how to tighten permeable rock to
achieve safe foundations for large dams. It includes theoretical
fundamentals as well as lessons learned in their application in
practical construction work in eminent projects. It also discusses
aspects such as the permeability of the rock mass at the dam site,
including the hydraulic characteristics of water conducting
openings and their effect on the reliability of water pressure test
(WPT) results; the influence of particular geological factors on
the hydrogeological regime at the site, as well as the
hydrofracturing behavior and individual groutability; and the
relationship between quantities of grout takes and the degree of
impermeabilization.
Fifteen years have passed since I was working at a dam site super
vising grouting work. That was not the first time that I had to car
ry out engineering geological investigations for several similar
projects, which always included testing programmes to find out the
permeability of the rock, and often I was in charge of grouting
work. It thus attracted my attention when this particular grouting
programme did not run as intended: most of the grout holes took
only very little grout It could not be the aim of the invested work
simply to drill holes and fill them again without bringing about
any further improvement. Fortunately, I had the chance to be en
gaged in many other grouting programmes in the following years and
used all these examples to analyse as thoroughly as possible the
permeability of the rocks being treated in view of their grout
ability. The more I studied, the stronger my conviction grew that
our rules which had decided the grouting of rock for many de cades
should be developed further, and therefore I occupied my self with
contributing some ideas for a new basis to investigation and
judgment of permeability of rock and for a more adequate
application of this technology."
|
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.