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玻璃固化体是高放废物的主要固定基材,玻璃内部存在着网状裂隙。高放废物实行深地质最终处置时,地下水会由于高放玻璃包装材料的腐蚀而进入到玻璃内部的网状裂隙。在地下水的作用下,玻璃裂隙表面发生蚀变,放射性核素因此会溶解进入环境。玻璃的蚀变速度和核素浸处速率将主要取决于玻璃的裂隙的表面积,为了预测高放玻璃固化体的长期处置行为和处置源项,有必要建立玻璃内部裂隙表面的测量方法。
Glass solidified body is the main fixed substrate for high level radioactive waste, there is a network of cracks within the glass. When high level radioactive waste is subjected to deep geological final disposal, groundwater can enter into the network of internal cracks in the glass due to the corrosion of high level glass packaging materials. Under the action of groundwater, the surface of the glass crack changes and the radionuclide dissolves into the environment. The rate of change of glass and the rate of nuclide dip will depend mainly on the surface area of the glass fissures. To predict the long-term behavior and disposal of high-glass-glass cured bodies, it is necessary to establish a method of measuring the internal fissure surface of the glass.