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The International INTRAVAL project. Phase 1 case 6: synthetic migration experiment

Technical Report:

Abstract

This case deals with hydraulic and tracer migration tests at a synthetic site. A highly detailed, realistic but synthetic geosphere was developed whose geometry, processes and parameter ranges were conditioned with data from the Grimsel Rock Laboratory. A limited number of `experiments` on the synthetic geosphere in the form of transient and steady-state pumping tests were conducted by numerical simulation. The project teams were provided with qualitative and quantitative information from the simulated tests, and could request further data. Modelers calibrated their models with the available data, and were then asked to compute breakthrough of conservative tracer between boreholes using their calibrated models. Results were then compared to the `true` results calculated and supplied by the Pilot Team using the complete synthetic geosphere. The project teams used methods ranging from simple manual adjustment to sophisticated mathematical inverse and geostatistical procedures to estimate the parameters and in some cases predict break through. Result failed to indicate a clear advantage of more complicated methods of analysis over simpler ones. However, several of the teams using more sophisticated methods did not have adequate time to complete their analyses. This exercise demonstrated the great difficulty of predicting site performance on the basis of a  More>>
Authors:
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
INIS-XN-422
Reference Number:
SCA: 052002; PA: AIX-24:007811; EDB-93:022533; ERA-18:007955; SN: 93000932584
Resource Relation:
Other Information: PBD: 1992
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTE DISPOSAL; COORDINATED RESEARCH PROGRAMS; RADIONUCLIDE MIGRATION; COMPUTERIZED SIMULATION; FLOW MODELS; CALIBRATION; COMPARATIVE EVALUATIONS; COMPUTER CODES; FIELD TESTS; FINITE DIFFERENCE METHOD; GEOLOGIC FRACTURES; GROUND WATER; HYDRAULIC CONDUCTIVITY; NUMERICAL DATA; POTENTIAL FLOW; RADIOACTIVE WASTE MANAGEMENT; VERIFICATION; 052002; WASTE DISPOSAL AND STORAGE
OSTI ID:
10119226
Research Organizations:
Nuclear Energy Agency, 75 - Paris (France)
Country of Origin:
NEA
Language:
English
Other Identifying Numbers:
Other: ON: DE93612751; TRN: XN9200104007811
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[74] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Codell, R. The International INTRAVAL project. Phase 1 case 6: synthetic migration experiment. NEA: N. p., 1992. Web.
Codell, R. The International INTRAVAL project. Phase 1 case 6: synthetic migration experiment. NEA.
Codell, R. 1992. "The International INTRAVAL project. Phase 1 case 6: synthetic migration experiment." NEA.
@misc{etde_10119226,
title = {The International INTRAVAL project. Phase 1 case 6: synthetic migration experiment}
author = {Codell, R}
abstractNote = {This case deals with hydraulic and tracer migration tests at a synthetic site. A highly detailed, realistic but synthetic geosphere was developed whose geometry, processes and parameter ranges were conditioned with data from the Grimsel Rock Laboratory. A limited number of `experiments` on the synthetic geosphere in the form of transient and steady-state pumping tests were conducted by numerical simulation. The project teams were provided with qualitative and quantitative information from the simulated tests, and could request further data. Modelers calibrated their models with the available data, and were then asked to compute breakthrough of conservative tracer between boreholes using their calibrated models. Results were then compared to the `true` results calculated and supplied by the Pilot Team using the complete synthetic geosphere. The project teams used methods ranging from simple manual adjustment to sophisticated mathematical inverse and geostatistical procedures to estimate the parameters and in some cases predict break through. Result failed to indicate a clear advantage of more complicated methods of analysis over simpler ones. However, several of the teams using more sophisticated methods did not have adequate time to complete their analyses. This exercise demonstrated the great difficulty of predicting site performance on the basis of a small number of tests. 27 refs., 32 figs., 8 tabs.}
place = {NEA}
year = {1992}
month = {Dec}
}