| Construction details | High-density slurry type pipe jacking method with compatible type for underground obstruction |
|---|---|
| Method | Milling mole method |
| Completion date | Jun. 2017 |
| Location of Construction | Shinagawa-ku, Tokyo |
| Ordering party | Shinagawa City Disaster Prevention Town Development Department River Sewerage Division |
| Pipe diameter | φ1100㎜ |
| Distance | L=177.628m |
| Type of soil | Medium sand mixed with silt |
| Gravel size |
| Nominal diameter | φ1100㎜ |
|---|---|
| Distance of pipe jacking | L=177.628m (Curve with R40m x 2 places) |
| Type of soil | Medium sand mixed with silt |
| N value | Average 35 |
| Percentage of gravel | - |
| Maximum gravel size | - |
| Groundwater level | GL-2.15m |
| Overburden | 平均13.1m |
| Underground obstacles | H-beam x 5 places |
| Construction period | Nov. 2016～Jun. 2017 |
5 H-beams and existing manholes were cut.
・H-beam(300mm), cutting length 382mm
・H-beam(300mm), cutting length 382mm
・H-beam(300mm), cutting length 380mm
・H-beam(300mm), cutting length 365mm
・H-beam(300mm), cutting length 363mm
・Existing manhole wall, cutting length 895mm
H-beam and existing manholes could be cut at about 0.1 mm / min.
The first H-beam was cut in the curve section of R40m. Since the telescopic jack is in the curve section, there was a situation where the jack inside the curve could not be extended by 30 mm or more.
Discharged metal pieces
Discharged metal pieces, woodchip
フォームが表示されるまでしばらくお待ち下さい。
恐れ入りますが、しばらくお待ちいただいてもフォームが表示されない場合は、こちらまでお問い合わせください。
