Radiation environment forecast and assessment for a northern Guangdong tunnel project

Radiation environment impact assessment is an important part of the environment assessment. According to the characteristics of tunnel construction, taking a tunnel project of the Northern Guangdong as an example, the radiation environment forecast and its impact assessment were studied, building the radiation environment prediction model, predicting the γ radiation dose rate of the tunnel and the amount of radon in the tunnel, estimating the diffusion of radon in air by air model, discussing the influence of the tunnel project on the radiation exposure of the surrounding public and construction workers basing on the estimated radiation dose. The radiation environment management could be strengthened. The additional radiation dose of environment and construction workers could be minimized, especially in the uranium-rich Northern Guangdong. (authors)