| Construction details | High-density slurry type pipe jacking method with compatible type for underground obstruction |
|---|---|
| Method | Milling mole method |
| Completion date | Dec. 2016 |
| Location of Construction | Higashi Yodogawa-ku, Osaka city, Osaka |
| Ordering party | Osaka City Waterworks Bureau |
| Pipe diameter | Φ1200mm |
| Distance | L=590.26m |
| Type of soil | L=590.26m |
| Gravel size | 20mm |
| Nominal diameter | Φ1200mm |
|---|---|
| Distance of pipe jacking | L=590.26m (Curve with R500m x 4 places) |
| Type of soil | 普通土 |
| N value | 24 |
| Percentage of gravel | - |
| Maximum gravel size | 20mm |
| Groundwater level | GL-0.30m |
| Overburden | Average 3.71m |
| Underground obstacles | Wood pile x 6 places, Steel sheet pile x 2 places |
| Construction period | Dec. 2017～May 2018 |
Initially, the design was cut and cover method, but the design was changed because there are wood piles under the Nishijima Bridge buried bridge and wood piles and steel sheet piles under the Masushima Bridge buried bridge.
Construction results: 6 wood piles and 2 steel sheet piles were cut.
Underground obstacles
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