Theoretical Study on Maximal Driving Length of Dummy Driving Drift in Uranium Mines

摘要：

For giving some references to improve radiation condition of dummy driving drift in underground uranium mines, this paper expounds the mathematical description of radon concentration and potential alpha energy of its progeny in ventilation airflow, and educes the calculation formula of the maximal driving length of dummy driving drift for exhausting radon and its progeny. Then, this paper studies the relationships between the maximal driving length (Lmax) and air-quantity of ventilation system for dummy driving drift (Q), section area of dummy driving drift (S), radon concentration of intake air (Co), potential alpha energy of radon progeny (E0) of intake air and radon emanation density of dummy driving drift (Dv) respectively, and obtains the below conclusions (i) Lmax is decreases with increased Co, E0, S and Dv respectively, on the contrary increaseswith increased Q, (ii) when Dr=1.463 Bq/(m3s), Lmax,Rn=L=max,α; when Dv<1.463Bq/(m3s),Lmax,Rn>Lmax,α; when Dv>1.463 Bq/(m3.s), Lmax,Rn<Lmax,α. In this paper some optimization measures of reducing radon and its progeny also are given.

关键词： uranium mine dummy driving drift maximal driving length ventilation radon and its progeny

作者: YE Yongjun DING Dexing ZHOU Xinhuo LI Xiangyang

作者单位: Key Discipline Laboratory for National Defen1ce for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China,Hengyang 421001,Hunan,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 2447-2450

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）