Abstract
This report summarizes the results from the LPT2 experiment. The field experiment had three major parts: a pumping test, a tracer experiment and a tracer dilution experiment. These are described in detail in the appendices of the report. Numerical simulations have been carried out both prior to and after the experiments. Results from these are also reported. The longterm pumping test and tracer test performed in KAS06, called LPT2, was the first attempt to clarify the transport of solutes in the site scale of Aespoe. The test was not intended to be complete regarding the transport parameters needed for nuclide transport modelling. In the operating phase of the Aespoe Hard Rock Laboratory more detailed tracer tests and numerical modelling will be conducted. The main conclusion from the field experiment is that the present conceptual model of Aespoe is sound, but some modifications may be required. These include both the extension and transmissivities of fracture zones. The field experiment has also produced additional information on the properties of the fracture zones like porosity and dispersivity. The cumulative aperture of all hydraulic fractures was estimated to 10x10{sup -3} - 30x10{sup -3} m for two different sets of zones. Considering the estimated width
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Rhen, I;
[1]
Svensson, U;
[2]
Andersson, J E;
Andersson, P;
Eriksson, C O;
Gustafsson, E;
Ittner, T;
Nordqvist, R
[3]
- ed.; VBB Viak AB, Gothenburg (Sweden)
- ed.; Computer-aided Fluid Engineering (Sweden)
- Geosigma AB, Uppsala (Sweden)
Citation Formats
Rhen, I, Svensson, U, Andersson, J E, Andersson, P, Eriksson, C O, Gustafsson, E, Ittner, T, and Nordqvist, R.
Aespoe Hard Rock Laboratory: Evaluation of the combined longterm pumping and tracer test (LPT2) in borehole KAS06.
Sweden: N. p.,
1992.
Web.
Rhen, I, Svensson, U, Andersson, J E, Andersson, P, Eriksson, C O, Gustafsson, E, Ittner, T, & Nordqvist, R.
Aespoe Hard Rock Laboratory: Evaluation of the combined longterm pumping and tracer test (LPT2) in borehole KAS06.
Sweden.
Rhen, I, Svensson, U, Andersson, J E, Andersson, P, Eriksson, C O, Gustafsson, E, Ittner, T, and Nordqvist, R.
1992.
"Aespoe Hard Rock Laboratory: Evaluation of the combined longterm pumping and tracer test (LPT2) in borehole KAS06."
Sweden.
@misc{etde_10145139,
title = {Aespoe Hard Rock Laboratory: Evaluation of the combined longterm pumping and tracer test (LPT2) in borehole KAS06}
author = {Rhen, I, Svensson, U, Andersson, J E, Andersson, P, Eriksson, C O, Gustafsson, E, Ittner, T, and Nordqvist, R}
abstractNote = {This report summarizes the results from the LPT2 experiment. The field experiment had three major parts: a pumping test, a tracer experiment and a tracer dilution experiment. These are described in detail in the appendices of the report. Numerical simulations have been carried out both prior to and after the experiments. Results from these are also reported. The longterm pumping test and tracer test performed in KAS06, called LPT2, was the first attempt to clarify the transport of solutes in the site scale of Aespoe. The test was not intended to be complete regarding the transport parameters needed for nuclide transport modelling. In the operating phase of the Aespoe Hard Rock Laboratory more detailed tracer tests and numerical modelling will be conducted. The main conclusion from the field experiment is that the present conceptual model of Aespoe is sound, but some modifications may be required. These include both the extension and transmissivities of fracture zones. The field experiment has also produced additional information on the properties of the fracture zones like porosity and dispersivity. The cumulative aperture of all hydraulic fractures was estimated to 10x10{sup -3} - 30x10{sup -3} m for two different sets of zones. Considering the estimated width of the zones the flow porosities were estimated to 0.02-0.1 %. The dispersivities were estimated to 0.1-0.2 of the flow path distance and the Peclet number to 4-11. The numerical simulations made prior to the experiment, dealing with the travel time of tracers, were found to be in reasonable agreement with the measurements. The data gathered in the field experiment will however make it possible to pursue the modelling efforts further.}
place = {Sweden}
year = {1992}
month = {Nov}
}
title = {Aespoe Hard Rock Laboratory: Evaluation of the combined longterm pumping and tracer test (LPT2) in borehole KAS06}
author = {Rhen, I, Svensson, U, Andersson, J E, Andersson, P, Eriksson, C O, Gustafsson, E, Ittner, T, and Nordqvist, R}
abstractNote = {This report summarizes the results from the LPT2 experiment. The field experiment had three major parts: a pumping test, a tracer experiment and a tracer dilution experiment. These are described in detail in the appendices of the report. Numerical simulations have been carried out both prior to and after the experiments. Results from these are also reported. The longterm pumping test and tracer test performed in KAS06, called LPT2, was the first attempt to clarify the transport of solutes in the site scale of Aespoe. The test was not intended to be complete regarding the transport parameters needed for nuclide transport modelling. In the operating phase of the Aespoe Hard Rock Laboratory more detailed tracer tests and numerical modelling will be conducted. The main conclusion from the field experiment is that the present conceptual model of Aespoe is sound, but some modifications may be required. These include both the extension and transmissivities of fracture zones. The field experiment has also produced additional information on the properties of the fracture zones like porosity and dispersivity. The cumulative aperture of all hydraulic fractures was estimated to 10x10{sup -3} - 30x10{sup -3} m for two different sets of zones. Considering the estimated width of the zones the flow porosities were estimated to 0.02-0.1 %. The dispersivities were estimated to 0.1-0.2 of the flow path distance and the Peclet number to 4-11. The numerical simulations made prior to the experiment, dealing with the travel time of tracers, were found to be in reasonable agreement with the measurements. The data gathered in the field experiment will however make it possible to pursue the modelling efforts further.}
place = {Sweden}
year = {1992}
month = {Nov}
}