Dam and levee remediation has become more prevalent since the start
of the twenty-first century. Given the vastness and complexity of
the infrastructures involved, keeping up with maintenance needs is
very difficult. Major surges in repair are usually triggered by
nature's wake-up calls, such as hurricanes, floods, and
earthquakes. The challenge has been to develop methods that ensure
safe, effective, reliable, and robust solutions for current and
future remediation issues. Specialty Construction Techniques for
Dam and Levee Remediation presents the state of practice in North
American dam and levee remediation as it relates to the use of
specialty geotechnical construction techniques, such as anchors,
grouting, cutoff (diaphragm) walls, and deep mixing. The book
focuses on the actual construction processes, describing design and
performance aspects of remediation where appropriate. Chapters deal
with the application of drilling and grouting methods, methods to
install mix-in-place (category 2) cutoff structures, excavated and
backfilled trenches (category 1), composite cutoff walls, and
stabilization using prestressed rock anchors. The book also
provides a comprehensive guide to dam and levee instrumentation,
covering planning, operating principles, data management, staffing,
and automation. As an educational and salutary example of
ineffective efforts, the final chapter presents a case history of a
series of remediations performed on a single project, which
ultimately proved unsuccessful. A wide range of methods has been
developed in response to the challenges that arise in the dam and
levee remediation arena and the need for a competitive edge. These
new methods are designed and monitored using state-of-the-art
techniques, giving rise to the emergence of new intensity and
initiative in this field. This book captures this transformation by
examining the theory and practice of contemporary remedial
techniques, using recent U.S. case histories to provide knowledge
and inspiration to readers, both in North America and around the
world.
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