As to the profile shapes of ground collapse, they are approximately divided into vertical shaft, butterfly, funnel, ampulliform in shapes and so on.
剖面形态大致可
为竖井
、
、漏斗及坛等。
As to the profile shapes of ground collapse, they are approximately divided into vertical shaft, butterfly, funnel, ampulliform in shapes and so on.
剖面形态大致可为竖井、、漏斗及坛等。
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