氡扩散系数与覆土性质及环境条件关系实验

Radon Diffusion Coefficient in Different Soils and Surroundings

治理铀废石堆的主要手段为砌拦渣墙、土壤覆盖并植树等,但是对于不同性质土壤、季节(温度、湿度)变化条件下的防护效果没有进行系统的研究。本文对铀废石堆覆盖不同物理性质(颗粒密度、孔隙比、含水率等)土壤,在不同环境条件下,测量其表面的氡析出率。结果发现,氡在土壤中的扩散系数随着土壤粒径增大而增大,随着含水率的增加而减小。

The primary means to treat waste uranium rock is to build drywall for blocking the soils and rocks, then cover soil with plantation, but without more in-depth study of its protective effect. In particular, no sys- tematic research was conducted with respect to protection effects under variable environmental conditions such as soils, and seasonal changes. Radon diffusion coeficiem was obtained through research efforts, which in- creases with soil particle size, but decreases with rising moisture content.