By analysis of difficult points in underdrainage design at excavation section, the paper briefly introduces thinkings and methods for underdrainage design at excavation section.
通过对挖方段暗排设计难点的分析，简要介绍挖方段暗排设计的思路及方法。
By analysis of difficult points in underdrainage design at excavation section, the paper briefly introduces thinkings and methods for underdrainage design at excavation section.
通过对挖方段暗排设计难点的分析，简要介绍挖方段暗排设计的思路及方法。
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