double pit type impress 双坑状压痕
double pit-leaping mining method 双坑跳跃式开采
pit double-disc 凹面圆盘
In recent years support structure with double-row piles as a new type of support structure for deep foundation pit has been applied in Wuhan.
双排桩支护结构作为新型的深基坑支护结构形式，近几年开始在武汉地区运用。
Engineering practice has proved that, using double-row piles in foundation pit supporting is a quite well way to safety and economic benefit, when in the foundation pit within 10 meters in depth.
工程实践证实，开挖深度在10米以内的基坑中，采用双排桩进行基坑支护在安全和经济效益上是非常好的支护方式。
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