One feature of mu d-soil-pressure-type pr opulsion engineering is construction on sudden curves.
With our many past results,we proved that we are a pioneer of mud-soil-pressure-type propulsion engineering.
In Fukuoka City φ1100 m/m, jacking lengt h : 315.945 m, curve radiu s : 200 m, 14 m, 50 m, Soil
type : Sand mixed with small stones.
After the area of R=14m until the destination, the construction area was narrow road and . The construction was carried out under the narrow road and busy commercial avenue.
Therefore the work was one which you cannot afford to fail on it .
We have reached the destination using only about 1/2 of the des igned jacking capacity.
|Type||Shape and length||Quantity||Unit||Remarks|
|50N Standard pipe 1st type||L=2440||50||Pipe (s)|
|Standard pipe Total||50||Pipe (s)|
|50N 1/4 pipe 3rd type||L=637||151||Pipe (s)|
|50N 1/4 pipe 3rd type||L=637||95||Pipe (s)||With stopper|
|70N 1/4 pipe 3rd type||L=637||76||Pipe (s)||With stopper|
|1/4 pipe Total||322||Pipe (s)|
|50N Half pipe 1st type||L=1200||0||Pipe (s)|
|Grand total||372||Pipe (s)|
The length of 1/4 pipe includes the thickness of buffer material.
Concrete-steel composite pipe (Status in the pipe(R=14m)) was used, and a joint opening supporting system unit was equipped.
Product Material List
|Jacking pipe (JC-52)||800||88||1～88|
|Jacking pipe (JA-52)||2,430||31||90～120|
|Jacking pipe (JA-51)||1,200||1||89|
|Jacking pipe (JA-51)||2,430||1||121||Vacant without collar|