摘要
牦牛坪稀土矿的开发,对矿区及周围地区存在放射性污染问题。试验以牦牛坪的一个渣堆为研究对象,选择当地易取的亚砂土进行覆盖试验,研究不同覆盖厚度与氡析出率和γ辐射剂量率之间的关系,推荐最佳覆盖厚度。结果表明:覆土能降低渣堆的氡析出率和γ辐射剂量率,且厚度越大,氡析出率的降低系数越大。经综合分析,最终推荐最佳覆盖厚度为50 cm。
The development of the Maoniuping REE deposit resulted in radioactive pollution. This study searches after the relation of covering soil thickness with and radon exhalation rate/γ-radiation in order to obtain optimum covering soil thickness. The results show that radon exhalation rate and γ-radiation of slag muck are reduced with covering soil thickness with best covering soil thickness of 50 cm.
出处
《四川地质学报》
2015年第4期614-617,共4页
Acta Geologica Sichuan
关键词
稀土矿渣堆
氡析出率
覆盖厚度
牦牛坪
Maoniuping
slag muck
radon exhalation rate
covering soil thickness
