dam crest

基本解释

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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Therefore the proper plan of the filling of dam body and the arrangement of access roads to dam crest are the key problems to ensure the strength of construction.
因此，合理的坝体填筑规划及上坝道路布置是确保坝体施工的关键技术问题。
The dam for the Nuozhadu Hydropower Station is located in an area with small valley coefficient, poor construction conditions and difficult arrangement of access roads to dam crest.
糯扎渡水电站大坝所处地段的河谷系数小，施工条件差，上坝道路布置困难。