机械通风条件下巷道围岩的氡析出规律  

Regularity of Radon Exhaling from Tunnel Formation with Mechanical Ventilation

作　　者：王曙光[1,2] 史淼[2] 王春艳[2] 李茹[2] 李恒[1] 

机构地区：[1]后勤工程学院营房管理与环境工程系,重庆401311 [2]西北核技术研究所,西安710024

出　　处：《后勤工程学院学报》2012年第6期61-66,共6页Journal of Logistical Engineering University

摘　　要：某水平独头巷道夏季时的氡析出率水平与铀矿井相当。为掌握该巷道内氡的析出规律,以计算模型为基础,在实验巷道段采取压入式和抽出式机械通风,对巷道内氡浓度、通风量及环境温度进行同步监测。数据分析结果表明:氡析出率与环境温度之间存在显著的线性关系;在相同环境温度和通风量条件下,对巷道进行压入式通风的氡析出率明显低于抽出式通风的,两者相差约63%;采用压入式通风对降低巷道内氡浓度更为有效。The radon exhalation rate from a dead-end tunnel is of the same magnitude as from some uranium mines. The regularity of radon exhaled from tunnel formation should be understood through the analysis of data obtained from the tunnel in blowing ventilation and exhaust ventilation case. Data of radon concentration, air flux and the temperature outside the tunnel are gathered at the same time. The results of data analysis indicate that the radon exhalation rate calculated by a model has some certain relativity with the external environment temperature, and a linear regression equation is given to show that relationship. It also shows that when the tunnel＇ s air flux and the outside temperature are both of the same value, the radon exhalation rate in blowing ventilation case is 63% lower than the exhaust case. So the blowing ventilation could be an effective way for reduction of radon concentration in a tunnel.

关 键 词：机械通风 巷道 氡析出率 温度 

分 类 号：TD711.4[矿业工程—矿井通风与安全]