foundation of the yuecheng reservoir dafuba auxiliary dam is composed of the tertiary sand, and no impervious treatment was made to the upstream face due to some historical reasons.
岳城水库大副坝坝基为透水的第三系砂,由于历史的原因,上游未做防渗处理。
cracks often appear on the upstream face of concrete gravity dams, some times the depth of them may be 30—40m. the causes and measures to prevent them are proposed in this paper.
it was theorized with a high degree of probability that the change in period was due to the nonlinearity of the hydrodynamic pressure acting on the upstream face of the dam.
据推论最大可能性是在那一时间段非线性水压作用于坝体上游面所造成的差别。
there are some disadvantages on traditional construction method of the transition material 2b on upstream face of concrete face rockfill dam, i. e. overtopping, slope-cutting and incline compaction.
混凝土面板堆石坝上游坡面传统的垫层料超填、削坡、斜坡碾压的施工方法存在许多弊端。
the result shows that its impermeability depends on the position of the layer and its perfect performance can be achieved only when the layer was on the upstream face of underground construction.
试验结果表明,只有将其施作在迎水面时才能使其防水效能得到理想的发挥。
the technique of extruded concrete side wall is a new method for construction of upstream face slab of cfrd, which was first used during construction of the ita dam in brazil.
挤压式混凝土边墻技术是混凝土面板堆石坝上游坡面施工的新方法。
there are many treatment method for seepage of concrete dam body. blocking at upstream face and drainage at downstream face is one generally adopted.
混凝土坝体渗水处理目前方法很多,一般采用上堵下排的方法。
there were 20 cracks at upstream face dam head of huanren dam during construction which threatened dam safety.
桓仁大坝上游面施工期发现严重的劈头缝20条,威胁大坝安全。
in order to solve the problem, a number of measures are proposed to be taken: ① to brush concrete on the upstream face for seepage control;