西北处置场是中低水平放射性固体废物的处置场。研究表明,场址区无不良地质现象,工程地质条件较好。场地内不含第四系浅层水,第三系承压水埋深较大。查明了地下水的补给、流量和排泄条件。通过地下水弥散实验研究获得了地下水实际流速、流向、纵横向弥散度和弥散系数。包气带研究获得了岩土的非饱和渗透系数。场址区岩土具有较高的可 The Northwest Disposal Facility is the disposal site for low-level radioactive solid waste. The research shows that there is no adverse geological phenomenon in the site area and the engineering geological conditions are good. Site does not contain the Quaternary shallow water, the tertiary system buried water depth larger. Groundwater recharges, discharges and discharges were identified. The actual flow velocity, flow direction, vertical and horizontal dispersions and dispersive coefficients of groundwater were obtained through the experiment of groundwater dispersion. Unsaturated permeability coefficient of geomaterials was obtained from the study of aeration zone. The site area of ​​rock and soil has a higher can