construction We meet customer needs by utilizing our construction technology and expertise to the maximum
◎the boring method of free curve
We use a trenchless method for curved or linear boring to the destination point while detecting the position with a position detection system that combines electromagnetic induction with a gyro.
◎HDD method（guide level boring method ）
This is a method of burying pipes, cables, etc. without digging. It helps prevent problems that stem from excavation and traffic blocking.
Very clean, safe construction is possible thanks to excavation while detecting the position from above ground.
◎the method of takenoko mole
This is a pull-through method for polyethylene tubes that will carry water, gas, etc. (not an open-cut method).
It is useful when construction length is around 10 – 12m and field conditions prevent open-cut construction.
Used for house plumbing (Such as sites with fences, under water pipes, under heavy traffic roads, or with very sloping 3m elevation differences, etc.)
Features
①Because pipes can be constructed with vertical members up to the ground surface, as a general rule, an arrival pit is not required on the public land side. ②Because pipes can be constructed with vertical members up to the ground surface, as a general rule, an arrival pit is not required on the public land side. ③Because pipes can be constructed with vertical members up to the ground surface, as a general rule, an arrival pit is not required on the public land side. ④The head position is not measured manually from above ground, so there is no need to block traffic.
Construction example (April 16, 2013)
This construction advanced from the starting pit under the sidewalk, passing under the house and garage, and raised the vertical pipe 1.2m to the house site.
However, as shown in Photo 1, a sewer pipe (125mm nominal diameter PVC pipe) was buried 0.4m down at a location near the vertical pipe position.
The pull path horizontal distance was 8.45m and elevation difference was 1.5m. (See Figure 1)
Photo 1 Sewer pipe near vertical pipe position
Photo 2 View of entire construction
Diagram 1 Pull path and elevation and cross section views
Photo 3 Starting pit
Photo 4 View of the starting side
