| Construction details | High-density slurry type pipe jacking method with compatible type for underground obstruction |
|---|---|
| Method | Milling mole method |
| Completion date | Nov. 2016 |
| Location of Construction | Itabashi-ku, Tokyo |
| Ordering party | Tokyo Metropolitan Waterworks Bureau |
| Pipe diameter | Φ1000mm |
| Distance | L=64.385m |
| Type of soil | Sandy soil |
| Gravel size |
| Nominal diameter | Φ1000mm |
|---|---|
| Distance of pipe jacking | L=64.385m |
| Type of soil | Sandy soil |
| N value | 1～30 |
| Percentage of gravel | -％ |
| Maximum gravel size | -㎜ |
| Groundwater level | GL-2.16 |
| Overburden | 9.65m |
| Underground obstacles | What seems to be steel sheet pile type III 817mm, H-beam(400mmx400mm), H-beam(350mmx350mm) |
| Construction period | Apr. 2016～Nov. 2016 |
Initially, 300 mm of H-beam was confirmed on the pipeline, so the milling moll method was adopted, but as a result, 817 mm of steel sheet pile, 400 mm of H-beam and 350 mm of H-beam were cut.
Underground obstacles
Underground obstacles
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