铀尾矿库氡析出率多点快速测量方法研究与应用

基于开孔集氡室累积测氡析出率其氡的等效衰变常量近似不变的原理,建立一种铀尾矿库表面氡析出率多点快速测量方法.该方法是将集氡室扣在待测介质表面上,经一定时间再将集氡室与氡析出率测量仪相连,实现取样氡浓度计算得到待测介质表面氡析出率.结果表明,快速测量氡析出率的方法其测量值与南华大学氡析出率标准装置的参考值误差较小,运用多点快速测量氡析出率的方法能够满足广区域的尾矿库表面氡析出率分布规律测量的需要.

Multiple point rapid measurement method for radon exhalation rate in uranium tailings reservoir and its application

Based on the principle of that the equivalent decay constant of perforated accumulation chamber, we propose a new method to rapidly measure the surface radon exhalation rate with multi-point detection technique. In our method, we first place the radon accumulation chamber on the surface of the samples then collect and calculate the radon exhalation rate. After a certain time, the radon chamber is connected with the radon exhalation rate measuring monitor. Radon concentration is calculated and the radon exhalation rate is measured. The relative error of radon exhalation rate measured by us is smaller than that by the standard device of South China. Obviously, the proposed method here can meet the need to measure the radon exhalation rate distribution on the surface of tailings reservoir in a wide area. The reviled method provides a feasible and believable means to measure the radon exhalation rate both rapidly and accurately.