本文主要分析混合槽设计改造的理论基础及试验数据，与生产实践相结合，选择既经济又 能满足生产要求 的合理化参数。
This paper mainly analysis theory base and testing data of design rebuild for agitator, select rational parameters economical and satisfiable.
进行盾构隧道衬砌设计时的关键问题是合理地确定作用于管片上的土压力，它是衬砌结构设计安全且经济的基本要求。
The key problem of the shield tunnel lining design is to confirm the soil pressure on the lining reasonably. It is the basic demand to design the lining structure safely and economically.
进行盾构隧道衬砌设计时的关键问题是合理地确定作用于管片上的土压力，它是衬砌结构设计安全且经济的基本要求。
The key problem of the shield tunnel lining design is to confirm the soil pressure on the lining reasonably. It is the basic demand to design the lining structure safely and economically.
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