Review of geotechnical measurement techniques for a nuclear waste repository in bedded salt Page: 7 of 285
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A large number of techniques are listed. Some of them measure the desired
properties directly, others must use an indirect approach tu calculate
the necessary parameter, and in some cases, no truly applicable measuring
technique exists. Recommendations are made where research and develop-
ment could provide improved or new methods to obtain necessary data.
Geologic formations are never completely isotropic or homogeneous;
professional judgment is always required to evaluate the validity of
measurements and to decide to what degree the data are representative
of the general area. Interpretation, weighting and integration of data
produced by all the various techniques will normally be required to
develop a reliable model.
Two measurement programs are required: exploration and monitoring. The
exploratory program would be designed to determine the naturally exist-
ing geologic, geometric, thermal, and hydrologic configuration of a
repository site, and to measure t.e physical properties of the geologic
materials at the site. The monitoring program would be designed to
measure any changes in baseline conditions resulting from construction
and operation of the repository in order to anticipate potential leakage
or rock instability, and to assess the long-term performance of the
repository.
The summary below includes research findings for each geotechnical category.
Geologic, Geophysical and Geodetic Measurement Techniques
Geologic measurement techniques are strongly oriented toward exploration,
but do have applications required during the emplacement and decommission-
ing stages of repository development. Trenching, core drilling and log-
ging, aerial photo interpretation, surface mapping, shaft and tunnel map-
ping, i.ineralogir and petrographic analysis, and joint indexing and
analysis are used to determine the geometry and geologic framework of
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Review of geotechnical measurement techniques for a nuclear waste repository in bedded salt, report, December 1, 1979; United States. (https://digital.library.unt.edu/ark:/67531/metadc1093986/m1/7/?rotate=270: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.