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在透水地基上筑堤坝时,铺盖是常采用的防渗措施之一。国內外学者对铺盖的设计理论作了许多研究,提出了各种类型的公式;但有的不够完善,有的颇不合理.本文对现有的铺盖设计理论,在大量的计算分析基础上,提出了既简便又精确的实用公式;指出了过去提出的铺盖极限长度和合理长度的不合理性,并提出了铺盖的合理设计方法和最佳铺盖断面公式.最后,还根据已有公式的合理假定,去除不合理部分,列出了铺盖土坝的整体渗流计算公式。
When embankment is built on a permeable foundation, bedding is one of the commonly used measures to prevent seepage. Many domestic and foreign scholars made many researches on the design theory of bedding and put forward various kinds of formulas, but some are not perfect enough and others are quite unreasonable.In this paper, on the basis of a large number of calculation and analysis, A simple and accurate practical formula is put forward, the irrationality of laying the limit length and the reasonable length in the past is pointed out, and the reasonable design method of the bedding and the formula of the optimum laying section are put forward.Finally, according to the reasonable of the existing formula It is assumed that removing the unreasonable parts lists the overall seepage calculation formula for embankment earth dam.