Safety Risk Analysis and Protective Control of Existing Pipelines Affected by Deep Pit Excavation in Metro Construction

Figure 12

(a) The pipeline displacement regularity. (b) The maximum displacement of underground pipelines with ratio of the RS depth to the RS width changes. (c) The pipeline displacement regularity by the RS underneath pipeline. (d) The pipeline displacement regularity by the RS between pipeline and pit.

(a)

(b)

(c)

(d)