箱涵顶进
box culvert propulsion
frame structure
culvert box advancing
box culvert jacking
Box Culvert-jacking
Culvert jacking
box-culvert jacking method
同步顶进工法
synchronous jack-in method
桥涵顶进
bridge and culvert jack-in
bridge pushing
bridge and tunnel jacking
框架桥顶进
jacking-in a new reinforced concrete frame bridge
顶进施工
jacked-in construction
head progressing construction
pushing pipe construction
Jacking construction
顶进桥涵
jacking bridge and culvert