中文摘要：

探讨一种在复杂介质条件下研究堤坝渗漏的线热源法模型。在堤坝发生管涌之前,地层中一般都会存在集中的渗漏通道。当渗漏地层为非均质的断裂、溶洞、破碎夹层等复杂介质时,堤坝中温度的变化不但与地层温度分布有关,还与地下水的渗流有关,地下水可以直接（对流）或间接（热传导）将流体的温度传递给周围介质并形成有规律的分布。将堤坝渗漏通道中的渗漏水流概化为线热源,基于热传导理论,建立堤坝渗漏的线热源模型,求解渗透流速。通过工程实例计算,其结果与采用同位素方法直接测得的渗透流速较为吻合,证明采用线热源模型计算渗透流速,其结果是可靠的。

英文摘要：

This paper is to discuss a line heat source model for studying the leakage of dykes in complex medium. Concentrated leakage passage generally is formed in the strata prior to piping in the dyke. When the leakage strata are composed of complex medium, including heterogeneous fracture, solution cave, crushed interlayer, and so on, the temperature of the dyke is determined by the temperature of the strata as well as the temperature of the flowing groundwater. Groundwater can affect the around medium directly through convective, or indirectly through heat- conduction. The temperature of the medium may be regularly distributed. Leakage water in the leakage passage is considered as a line heat source. Based on the theory of heat conduction, the leakage velocity was calculated. In the example, the calculation value is close to the data measured directly using isotope method.