Dewatering is always necessary in foundation pit excavation and hand dig piles.
基坑开挖或施行人工挖孔桩常常需要进行人工降水。
In the excavation of foundation pit and foundation bench in shallow aquifer area, the problem of dewatering will be involved.
在含水层较浅的地区开挖基坑及基槽，都涉及到降水问题。
In the excavation of foundation pit and foundation bench in shallow aquifer area, the problem of dewatering will be involved.
在含水层较浅的地区开挖基坑及基槽，都涉及到降水问题。
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