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一、概論巴甫洛夫斯基曾建議,透水地基上均貭土坝的渗流計算可以这样考虑:在計算坝体渗流时,将坝基当作不透水层;在計算坝基渗流时,将坝体当作不透水体;最后将分别計算所得的渗流量加起来,便得总渗流量。显然,巴氏是假设坝体和坝基为两个截然无关的单独体,宛若分界面上装有一隔水板,截断渗流的沟通。后来,有些作者遵循巴氏的假設进行研究;另一些則考虑了坝体上游楔体中渗流对坝基的影响。可是,在他們推导公式的过程中所作的一些假設是与实际情况不符的。
I. Introduction Pavlovsky had suggested that seepage calculation of earth dam on permeable foundation can be considered as follows: When calculating seepage flow of dam body, dam foundation is regarded as impermeable layer; when seepage of dam foundation, the dam body As impermeable body; Finally, the calculated seepage flow will add up together to obtain the total seepage flow. Obviously, Pasteur assumes that the dam body and the dam foundation are two completely unrelated single bodies, just like the interfacial surface is equipped with a baffle to cut off the seepage flow. Later, some authors followed the Pap’s hypothesis for research; others considered the effect of seepage on the dam foundation in the wedge upstream of the dam. However, some of the assumptions made in the process of deriving the formula are not in accordance with the actual situation.