undercrossing

The underground diaphragm wall in Yellow River Undercrossing Project of the Middle Route in the South-to-North Water Diversion is the deepest and thickest one in China.

南水北调中线黄工程地连续墙是国内最深最厚地连续墙,地质条件差,施工难度大,施工中存在较大风险。

Undercrossing tunnels are frequently constructed by the shield-driven method in metro projects.Shield tunneling affects the existing tunnel inevitably.

摘要在地铁工程中，常采用盾构法修建正交隧道，新隧道掘进不可避免地对既有隧道产生影响。