铀矿山井底车场巷道内氡及其子体浓度分布规律研究  

Study on Regularity of Radon and Its Daughters' Concentration Distribution in Uranium Mine Shaft Station

作　　者：洪昌寿[1] 李向阳[2] 胡鹏华[3] 李先杰[3] 叶勇军[2] 谢东[2] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]南华大学环境保护与安全工程学院,湖南衡阳421001 [3]核工业北京化工冶金研究院,北京101149

出　　处：《核科学与工程》2015年第2期385-393,共9页Nuclear Science and Engineering

基　　金：国家自然科学基金项目(11075071)

摘　　要：基于井底车场风流风路基本为巷道型通风空间的事实,本文开展了车场巷道内氡及其子体浓度分布规律的研究。从分析稳态时氡析出均匀的理想巷道内氡及其子体浓度分布出发,进而引入正源、负源的假定和氡及其子体浓度增长的叠加原理,推导出稳态时氡析出不均匀巷道内氡及其子体浓度分布方程。结合工程实践,对计算式进行了简化、分析和讨论。研究结果表明,限制巷道周壁氡的析出、保证稳定的通风量及较好的入风风质能达到有效控氡的效果。Based on the fact that airflow path in the shaft station generally pertained to the roadway type ventilation space, study on the regularity of radon and its daughters＇ concentration distribution in shaft station was carried out. Beginning with analysis of radon and its daughters＇ concentration distribution in the steady state of ideal roadway with a homogeneous radon exhalation rate, the steady-state distribution equations of radon and its daughters＇ concentration were deduced when radon emanation rate of roadway was inhomogeneous on the assumption of positive/negative superposition principle of radon and its daughters＇ concentration growth source and Associated with engineering practice, simplification, analysis and discussion on relevant mathematic equations were launched. The study results radon exhalation of rock face and ensuring a stable wind quality could effectively achieve the aim to radon control.

关 键 词：铀矿山 井底车场 氡及其子体 浓度分布 

分 类 号：X936[环境科学与工程—安全科学] X946