【摘要】 弥散系数是预测地下水污染的重要参数.当前国内外普遍采用发散状径向水质模型理论确定弥散系数.该理论除表达式冗长、复杂、不易使用外,且只能孤立地进行.本文提出的汇集状径向弥散理论具有表达式简单、易于推广,且可与生产中经常采用的抽水试验同步进行等长处.采用该理论除了可大大地降低试验成本外,尚可一次测定水流与水质参数.更多还原

【Abstract】 This article presents a theory of hydrodispersive transfer in a converging radial flow fields with simple expression and easy to han- dle.The theory refers to the study of the transmission process of tracer,with an observation well being the tracer injection well while pumping water（T,S,D₂）and the sample being taken close to that observation well.Obriously,during the operation,tracer tests may be combined with field pumping tests.And it is possible to meassure the parameters of both water flow and water quality at the same time without using additional new boreholes and other equipment,thus the test may be greatly simplified.更多还原