Abstract
Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium has been successfully carried out in February 1990 at the mining centre of FANAY. SILORD site was selected allowing the drilling through the `Raise Boring` technique of pits of 30 m depth minimum between two pre-existent galleries. Two pits of 37 m depth were drilled and characterized in detail: mean diameter and vertical deviation measurements, valuation of the surface condition (rugosity) and cracking. The pit which was the most regular was selected for the feasibility test it-self. In parallel, manufacturing and handling techniques for the engineered barrier were improved. The bricks were made from a powdered mixture of clay and 10% sand and formed the barrier which was installed in the pit using iron baskets. The technique used was compacting by uniaxial pressing at 64 MPa. Twenty eight baskets containing the engineered barrier were fabricated at LIBOS (refractory manufactory of CTE Group) and taken to FANAY-SILORD. A maximal diameter of 96.03 cm was determined for the basket passing through (basket height = 1.335 m) and verified by the lowering of basket gauges in the pit. The baskets were stacked up in the pit, without any
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Jorda, M;
Lajudie, A;
Gatabin, C;
Atabek, R
[1]
- CEA Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. Stockage Dechets
Citation Formats
Jorda, M, Lajudie, A, Gatabin, C, and Atabek, R.
Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium; Demonstration in situ de la mise en place d`une barriere ouvragee en milieu granitique.
CEC: N. p.,
1992.
Web.
Jorda, M, Lajudie, A, Gatabin, C, & Atabek, R.
Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium; Demonstration in situ de la mise en place d`une barriere ouvragee en milieu granitique.
CEC.
Jorda, M, Lajudie, A, Gatabin, C, and Atabek, R.
1992.
"Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium; Demonstration in situ de la mise en place d`une barriere ouvragee en milieu granitique."
CEC.
@misc{etde_10132199,
title = {Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium; Demonstration in situ de la mise en place d`une barriere ouvragee en milieu granitique}
author = {Jorda, M, Lajudie, A, Gatabin, C, and Atabek, R}
abstractNote = {Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium has been successfully carried out in February 1990 at the mining centre of FANAY. SILORD site was selected allowing the drilling through the `Raise Boring` technique of pits of 30 m depth minimum between two pre-existent galleries. Two pits of 37 m depth were drilled and characterized in detail: mean diameter and vertical deviation measurements, valuation of the surface condition (rugosity) and cracking. The pit which was the most regular was selected for the feasibility test it-self. In parallel, manufacturing and handling techniques for the engineered barrier were improved. The bricks were made from a powdered mixture of clay and 10% sand and formed the barrier which was installed in the pit using iron baskets. The technique used was compacting by uniaxial pressing at 64 MPa. Twenty eight baskets containing the engineered barrier were fabricated at LIBOS (refractory manufactory of CTE Group) and taken to FANAY-SILORD. A maximal diameter of 96.03 cm was determined for the basket passing through (basket height = 1.335 m) and verified by the lowering of basket gauges in the pit. The baskets were stacked up in the pit, without any difficulty, with a mean radial gap of 1.6 cm (for a pit mean diameter of 99.3 cm). Three simulated COGEMA waste containers were then satisfactorily installed. The real volume to be sealed, including residual voids, was estimated at 21.47 m{sup 3}. The engineered barrier weight after emplacement came to 36280 kg leading to a dry density in service, i.e. after the engineered barrier swelling, of 1.69. 30 figs.}
place = {CEC}
year = {1992}
month = {Dec}
}
title = {Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium; Demonstration in situ de la mise en place d`une barriere ouvragee en milieu granitique}
author = {Jorda, M, Lajudie, A, Gatabin, C, and Atabek, R}
abstractNote = {Field test demonstration of emplacement feasibility of precompacted clay buffer materials in a granitic medium has been successfully carried out in February 1990 at the mining centre of FANAY. SILORD site was selected allowing the drilling through the `Raise Boring` technique of pits of 30 m depth minimum between two pre-existent galleries. Two pits of 37 m depth were drilled and characterized in detail: mean diameter and vertical deviation measurements, valuation of the surface condition (rugosity) and cracking. The pit which was the most regular was selected for the feasibility test it-self. In parallel, manufacturing and handling techniques for the engineered barrier were improved. The bricks were made from a powdered mixture of clay and 10% sand and formed the barrier which was installed in the pit using iron baskets. The technique used was compacting by uniaxial pressing at 64 MPa. Twenty eight baskets containing the engineered barrier were fabricated at LIBOS (refractory manufactory of CTE Group) and taken to FANAY-SILORD. A maximal diameter of 96.03 cm was determined for the basket passing through (basket height = 1.335 m) and verified by the lowering of basket gauges in the pit. The baskets were stacked up in the pit, without any difficulty, with a mean radial gap of 1.6 cm (for a pit mean diameter of 99.3 cm). Three simulated COGEMA waste containers were then satisfactorily installed. The real volume to be sealed, including residual voids, was estimated at 21.47 m{sup 3}. The engineered barrier weight after emplacement came to 36280 kg leading to a dry density in service, i.e. after the engineered barrier swelling, of 1.69. 30 figs.}
place = {CEC}
year = {1992}
month = {Dec}
}