PHGAs are amplified from the base of the dam to the crest.
地震造成的水平加速峰值是从大坝坝基向坝顶急剧增加的。
The deformation process curve of the Wanjiazhai dam crest exhibits many peaks.
万家寨大坝坝顶各监测点的变形过程是多峰曲线。
Revetments protect the space from dam crest to the line a certain distance, normally 2.5m, under the minimum water level of the dam upstream.
护坡覆盖的范围，上游由坝顶护至水库最低水位以下一定距离，一般在最低水位以下2.5米。
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