碾压混凝土拦河坝工程须经过四个枯水期四个汛期的施工才能达到设计高程。

The construction of the roller compacted concrete dam needs four dry seasons and four flood seasons to reach the design elevation.

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枢纽工程中的拦河坝选定全断面碾压混凝土重力坝，其碾压混凝土掺合料的选择是本工程的筑坝关键问题。

The selection of the admixture for its roller compacted concrete is the key to the construction of this project.

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我省大中型水库、拦河坝多建于软基上，主要工程地质问题有：坝基沉 稳、滑稳、渗稳与震稳问题，本文对后三个问题做充分论述。

The authors make a comprehensive discussion about major geological problems for these projects, including settlement stability, slide stability, seepage stability and seism stability in this paper.

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