Test results of CPT-deployed vertical electrode arrays at the DOE Hanford Site
- Pacific Northwest National Lab., Richland, WA (United States)
- Lawrence Livermore National Lab., CA (United States)
- Applied Research Associates, South Royalton, VT (United States)
Field studies were conducted at the DOE Hanford Site to test cone penetrometer installation of vertical electrode arrays (VEA) for use with Electrical Resistivity Tomography (ERT). Most VEA installation methods in current use are not economic for environmental applications. The cone penetrometer technology (CPT) can provide an economic and relatively non-intrusive installation method. However, a VEA with deployable and properly functioning electrodes was required. Results of the design, installation and testing of CPT VEAs are reported in this paper. Several designs were developed and bench tested for use with the CPT. After initial field installation studies, one design was chosen for further testing at the DOE Hanford Site. Four VEAs were each pushed to 100 feet in 4 days. To test the CPT VEAs, an infiltration experiment was conducted with cross VEA tomographic data collected for three vertical planes. These data were processed using the electrical resistivity tomography code developed by Lawrence Livermore National Laboratory (LLNL). Tomographic images for each vertical plane tracked the subsurface resistivity changes associated with the migrating fluid. It is concluded from these test results that the CPT is a viable method for installing VEAs. The VEAs were rapidly and economically installed to the maximum depth required, data of adequate quality were obtained and tomographic images from the infiltration experiment verified that the CPT VEAs provide viable ERT data.
- OSTI ID:
- 526107
- Report Number(s):
- CONF-970344-; TRN: 97:016850
- Resource Relation:
- Conference: SAGEEP `97: 10. annual symposium on the application of geophysics to environmental and engineering problems, Reno, NV (United States), 23-26 Mar 1997; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of the symposium on the application of geophysics to engineering and environmental problems. SAGEEP `97: Volume I and II; Bell, R.S. [comp.]; PB: 1096 p.
- Country of Publication:
- United States
- Language:
- English
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