关键词: 氡同位素, 渗漏, 氡箱模型, 闸塘

Abstract: To diversify the methods of seepage analysis for hydraulic projects, we use Rn isotope to identify groundwater seepage points, and establish a Rn-box model to estimate the inflow rate of groundwater, then analyze the parameter sensitivity. A sluice pond at Dongtai poultry yard, Yancheng City, was taken as an example to verify this new method. The results showed that Rn, as an environmental isotope, could be used to detect seepage points of hydraulic projects, as well as estimate the groundwater inflow rate. The main uncertainty of this methodology comes from the Rn activities in the groundwater. In general, Rn isotope is promising in identifying the leakage of hydraulic projects.

Key words: Rn isotope, leakage, Rn-box model, sluice pond