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首页> 美国政府科技报告 >Diffusion in the Matrix of Granitic Rock Field Test in the Stripa Mine. Final Report.
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Diffusion in the Matrix of Granitic Rock Field Test in the Stripa Mine. Final Report.

机译：stripa矿区花岗岩岩体试验矩阵扩散。总结报告。

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Three similar migration experiments in the matrix of granitic rock have been performed and are presented. The experiments have been carried out in 'undisturbed' rock, that is rock under its natural stress environment. Since the experiments were performed at the 360 m level in the Stripa mine (Stripa, Sweden). A mixture of three nonsorbing (conservative) tracers, Uranine, Cr-EDTA, and I(sup -), were injected into the granitic rock matrix for three different time periods: About 3 months, about 6 months, and about 3.5 years. The subsequent overcorings of the injection holes showed that the tracers had in some cases migrated at least about 400 mm (measuring limit) into the rock matrix for the experiment with the longest injection time. It could also be seen that there were large differences in migration distance into the rock matrix for samples taken fairly close to each other. The results from all three experiments showed that all three tracers had migrated through the disturbed zone close to the injection hole, through the fissure coating material, and a distance into the 'undisturbed' rock matrix. (ERA citation 14:006426)

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