- Tunnel
Phase1 construction work for a headrace tunnel for the Mizuumi River
| Orderer | Kinki Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism |
|---|---|
| Completion | 2020 |
| Structure and scale |
Tunnel construction (NATM) Total length L = 4,717m, of which L = 2466.4m was built this time (Phase1 construction), as well as excavation L = 2466.4m (A = 64 m2), lining L = 347.75m, underground drainage construction L = 2,300m (Φ700), floor slab construction L = 1,800m, series of auxiliary construction works (L = 288m), and construction work outside the tunnel, including excavation V = 18,600m3; series of slope construction works, and flow diversion (corrugate Φ2,000) L = 148m |
| Location | Fukui Prefecture |
| Application | Headrace |
The purpose of this construction is to divert flood water from Mizuumi River in association with the Asuwa River Dam project, which is intended to reduce flood damage.