一、天然铺盖的提出及其意义 在真刀真枪的毕业设计中,我们接受了高岩口水库设计的任务。高岩口沟位於昌平山区,流域面积120平方公里,河床砂卵覆盖层深达65公尺,其渗流系数由10-1到10-2公分/秒。因此,山上下来的水,完全浅入地下成为　流,只有当发山洪的时候,河道中才有几天的巡 First, the natural bedding cover made and its significance In the true knife real gun graduation design, we have accepted the task of design of the reservoir of high rock mouth. The Gaoyankougou is located in Changping Mountain, with a drainage area of ​​120 km2 and a bed of sand and egg covering up to 65 meters. Its seepage coefficient ranges from 10-1 to 10-2 cm / s. Therefore, the water down the mountain, completely into the ground into a shallow stream, only when the torrents, there are a few days in the river tour