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首页> 美国政府科技报告 >Effect of Geosphere Conditions on the Lifetimes of Copper Containers. (Effet desConditions de la Geosphere sur la Duree de Vie des Conteneures en Cuivre)
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Effect of Geosphere Conditions on the Lifetimes of Copper Containers. (Effet desConditions de la Geosphere sur la Duree de Vie des Conteneures en Cuivre)

机译：地圈条件对铜容器寿命的影响。 （Effet desConditions de la Geosphere sur la Duree de Vie des Conteneures en Cuivre）

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The effects of variations in geosphere conditions and of the properties of thebackfill material on the performance of the engineered barriers have been examined using a numerical Cu container failure model. The thickness of the exclusion zone between the vault and the nearest major water-bearing fracture has been varied between 1 and 50 m. The properties of the excavation-disturbed zone (EDZ) have been varied to simulate both blast-induced and stress-induced damage. Finally, the effect of the particle size of crushed granite, of reduced heat output from the container and the effect of substituting pyrite for biotite on the performance of the backfill material has been determined. The impact of these variables on the corrosion rate, the extent of the four O2-consumption reactions and the fate of Fe(II) dissolved from the biotite (or pyrite) in the backfill and EDZ has been examined. The results of the various simulations suggest that the engineered barriers the container and the buffer and backfill materials can isolate the fuel almost indefinitely, regardless of the geosphere conditions.

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