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概况建国以来,河北省共修建了坝高15米以上的水库220余座,其中土坝180座。大部分土坝修建在第四纪冲积层上,复盖层层次及其组成都比较复杂,各层透水性很不均一,个别地层透水性很强,渗透系数超过300米/昼夜,最大达606米/昼夜。据统计,该省有17座大型水库的土坝,建筑在砂砾石复盖层上,其中有12座山谷类型水库,复盖层深度为6～17米,个别
Overview Since the founding of the People’s Republic of China, a total of more than 220 reservoirs have been built in Hebei Province with a height of 15 meters, of which 180 are earth dams. Most of the earth dams are built on Quaternary alluvium. The layers of cover and their composition are quite complicated. The water permeability of each layer is very uneven. The water permeability of individual strata is very strong. The permeability coefficient is over 300m / day and night, up to 606 M / day and night According to statistics, there are 17 earth dam reservoirs of large reservoirs in the province, built on sand and gravel overlay, of which there are 12 valley type reservoirs with overburden depth of 6 to 17 meters. Individual