Akabanedai housing complex public sewerage work (Phase 1)

Construction details High-density slurry type pipe jacking method with compatible type for underground obstruction
Method Milling mole method
Completion date Feb. 2017
Location of Construction Kita-ku, Tokyo
Ordering party Urban Renewal Agency East Japan Rental Housing Headquarters
Pipe diameter φ1500㎜
Distance L=26.900m
Type of soil Sand mixed with clay
Gravel size

Work summary

Nominal diameter φ1500㎜
Distance of pipe jacking L=26.900m
Type of soil Sand mixed with clay
N value 15
Percentage of gravel -
Maximum gravel size -
Groundwater level GL-9.956m
Overburden 9.63m
Underground obstacles Diaphragm wall x 2 places, H-beam(400mm) in the wall x 2 numbers, H-beam(400mmx400mm), Metal objects 150mm
Construction period Dec. 2016~Feb. 2017

Initially, two diaphragm walls were confirmed on the planned route, so the milling mall method was adopted. However, as a result, we cut two diaphragm walls, H-beam(450 mm) and metal objects(150 mm).

Cutting of underground obstacle