期刊论文

Ye, Yong-Jun

中文

原子能科学技术

1000-6931

2014

48

9

1718-1724

10.7538/yzk.2014.48.09.1718

国家自然科学基金资助项目（11105069）；

本校为第一且通讯机构

渗流是破碎介质内氡运移的主要方式之一，研究氡在破碎射气介质内的渗流运移和析出规律对氡的防护设计具有重要意义。为此，本文以粒径为4～5 mm的铀矿石为实验样品，利用自制的一维渗流实验装置研究了不同渗流速度下破碎射气介质内孔隙氡活度浓度和介质表面氡析出率的变化规律。实验结果表明，破碎射气介质的气体渗透率较大，氡的运移很容易由渗流主导。当破碎射气介质内氡主要以渗流方式运移时，可通过测量介质内同一位置不同渗流速度的孔隙氡活度浓度或同一渗流速度不同位置的孔隙氡活度浓度，运用氡在射气介质中的浓度分布解析式和非线性最小二乘法，估算出介质的可运移氡产生率。一定渗流速...

The seepage is one of the main ways of radon migration in the fragmented media, so it is of great significance to study radon seepage migration and exhalation laws in the fragmented emanation media for the design of radon protection. The uranium ore particles whose diameters were from 4 mm to 5 mm were chosen as the experimental samples, and a home-made one-dimensional seepage experimental device was used to study the variation of pore radon activity concentration in the fragmented emanation media and the variation of radon exhalation rate in t...