Result

Water pipe laying work (Kanan connecting pipe, Kashiwara route) 1 construction zone

Construction details High-density slurry type pipe jacking method with compatible type for underground obstruction
Method Milling mole method
Completion date Apr. 2017
Location of Construction Kashiwara city, Osaka
Ordering party Osaka Water Supply Authority
Pipe diameter φ800㎜
Distance 307.485m
Type of soil Sandy soil, Gravel soil
Gravel size 420mm

Work summary

Nominal diameter φ800㎜
Distance of pipe jacking 307.485m
Type of soil Sandy soil, Gravel soil
N value 16~37
Percentage of gravel 29.4%
Maximum gravel size 420㎜
Groundwater level GL-4.37m
Overburden 8.51m
Underground obstacles Floodwood(L=400mm) x 2 places
Construction period Feb. 2017~Apr. 2017

In the original plan, it was a High-density slurry type pipe jacking method with Boulder compatible type,
but the design was changed due to the excavation of boulders,
(Φ430mm) and floodwood (1900mm)during shaft excavation.

Construction result: Floodwood(400mm)was cut in two places.

Floodwood discharged during excavation

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