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    • 3. 发明授权
    • Earth covered in-the-ground nuclear reactor facility
    • 地球覆盖了地下核反应堆设施
    • US4244153A
    • 1981-01-13
    • US890261
    • 1978-03-27
    • Klemens SchwarzerWolfgang KrogerKarl-Heinz EscherichKlaus KasperJurgen Altes
    • Klemens SchwarzerWolfgang KrogerKarl-Heinz EscherichKlaus KasperJurgen Altes
    • G21C13/00G21D1/00E02D27/00
    • G21C13/00G21D1/00Y02E30/40
    • A clay layer of low permeability and of a thickness of about 2 meters, depending somewhat upon the permeability, immediately covers and laterally surrounds the external concrete wall and roof structure of the nuclear reactor building, this layer extending at least down to a ground water draining or leading ground layer. Above it is a layer of gravel, sand or porous stone of relatively high permeability, typically somewhat less than a meter thick, and on top thereof an earth fill layer of less permeability than the intermediate layer is provided, which is typically 8 meters thick. The clay layer, which could also be a loam layer, prevents the emergence of radioactive materials in the event of cracking of the concrete structure by an accidental malfunction and absorbs aerosols and water-soluble fission products. The gravel layer converts the convective mass flow of the emerging materials into a diffusion flow and prevents the spreading of cracks in the covering layers. In the thick earth fill layer on top, any radioactive materials still spreading are transported only by a process of diffusion. If protection is to be provided against the strongest external effects, a concrete paving can be put on top of the earth fill.
    • 低渗透性和约2米厚度的粘土层,具体取决于渗透性,立即覆盖和横向围绕核反应堆建筑物的外部混凝土墙体和屋顶结构,该层至少延伸至地下水排水 或引导地层。 在其上方是一层相对较高渗透性的砾石,沙子或多孔石,通常稍微小于一米厚,并且在其顶部上设置比通常为8米厚的中间层的渗透性低的地球填充层。 粘土层也可以是壤土层,防止了偶然发生混凝土结构裂缝时放射性物质的出现,并吸收气溶胶和水溶性裂变产物。 砾石层将新兴材料的对流质量流转化为扩散流,并防止覆盖层中的裂纹扩展。 在顶部的厚泥土填充层中,仍然铺展的任何放射性物质只能通过扩散过程传输。 如果要对最强的外部效应提供保护,可以将混凝土铺路放在地上填充物的顶部。