The first stage earth rock fill cofferdam of Three Gorges Project is mainly composed of the weathered sand, excavated spoil and rock blocks.
三峡水利枢纽一期土石围堰堰体主要由风化砂、石渣和块石填筑而成。
The safety of the first phase of rock-and-earth cofferdam according to the comprehensive analysis on the surveying results is discussed.
根据对观测成果的综合分析，论述了一期土石围堰的安全性。
The safety of the first phase of rock-and-earth cofferdam according to the comprehensive analysis on the surveying results is discussed.
根据对观测成果的综合分析，论述了一期土石围堰的安全性。
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