采用钻孔灌注桩作为深地坑的围护结构，在坑内设排水沟、集水井排水。
The concrete piles being poured into deep hole act as the enclosure structure of deep pit. There are draining ditch and water gathering well inside the pit for drainage.
采用钻孔灌注桩作为深地坑的围护结构，在坑内设排水沟、集水井排水。
The concrete piles being poured into deep hole act as the enclosure structure of deep pit. There are draining ditch and water gathering well inside the pit for drainage.
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