隧道工程中氡的运移规律及其控制研究

Research on the regularity of emission and dispersion of radon in tunnel construction

隧道工程由于爆破施工使岩体产生大量的裂隙,形成介质中氡及子体的析出。文章根据氡及子体运移规律的研究,提出了合理调整地下通风和局部地段及时喷锚支护的方案,控制氡的扩散、渗流,确保地下隧道及地表环境不受污染。

In the process of explosion in tunnel construction, large amount of cracks are produced in the rock mass and from them emit radon and its radiation products. The paper studies the regularity of the emission and dispersion of radon and its radiation products and proposes that the underground ventilation and the combined bolting and shotcrete support should be applied in time in order to control the dispersion and permeation of radon and to protect both the tunnel and the surface environment from being contaminated.