期刊论文

中文

辐射防护

1000-8187

2013

33

4

243-248

本校为第一机构

为减少铀尾矿库上氡的析出,降低辐射危害程度,通常采用黏土覆盖铀尾矿库。对于覆盖黏土,其压实度和含水率是现场可控的,同时黏土压实度和含水率分别对覆盖厚度有着较大的影响。当黏土含水率大于最优含水率后,随黏土最大压实度增加,含水率反而减少。由此造成了在一定降氡效率前提下,压实度、含水率和覆盖层厚度间存在非线性变化关系。为取得合适的黏土覆盖厚度,本文对覆盖黏土的土工参数与黏土覆盖厚度间关系进行了分析,优选出了部分土工参数值。

Clay is an excellent material in reducing radon emissions and health risks from uranium railings. The compactness and moisture content of clay covered on uranium tailings can be altered on site. The effectiveness of earthen thickness for Radon attenuation depends on the compactness and moisture content of clay. When the moisture content of clay is greater than the ＂ classic moisture content＂, the moisture content will decrease instead with the increase of compactness. The relations between radon attenuation efficiency, compactness, moisture c...