期刊论文

Ding, Dexin(dingdxzzz@163.com)

中文

中南大学学报(自然科学版)

1672-7207

2015

46

5

1799-1805

10.11817/j.issn.1672-7207.2015.05.030

国家自然科学基金资助项目（11105069）~~；

本校为第一且通讯机构

通过一定初始浓度的氡在0~14 400 s内累积衰变产生的氡子体α潜能浓度的理论计算值,建立氡子体α潜能浓度与氡浓度和累积衰变时间之间的简化数学关系;依据独头巷道内氡及氡子体的来源,分别建立压入式通风方式下巷道内通风风流中氡浓度与氡子体α潜能浓度的数学计算模型;针对具体的独头巷道,研究不同通风量、岩壁氡析出率和有无矿堆情况下整个巷道内氡浓度和氡子体α潜能浓度分布规律。研究结果表明:压入通风方式的独头巷道内,氡浓度及氡子体α潜能浓度均随着岩壁氡析出率和风流流动距离的增大而增大,随着通风风量的增大而减小;工作面矿堆析出的氡能迅速导致风流中氡浓度的增大,而其产生的氡子体...

Through the theoretical calculation values of accumulated potential α energy concentration of radon daughters decayed by radon with given initial concentration 0-14 400 s, a simplified mathematical relationship between potential α energy concentration of radon daughters and radon concentration and cumulative decay time was identified. According to sources of radon and its daughters in blind roadway, mathematical calculation models of radon concentration and potential α energy concentration of radon daughters in the ventilation air of blind r...