mid-niigata-increment

JR Wanazu Tunnel
Damage to the linnng of JR Wanazu Tunnel

Uonogawa Bridge
Damage to piers of Uonogawa Bridge of the Joetsu Shinkansen Railway

Flood of Uono River

Damaged house in Kawaguchi

Uonuma Tunnel
Damage to lining of Uonuma Tunnel, Joetsu Shinkansen Railway

Kizawa tunnel
Kizawa Tunnel
Laser-scanned west wall of Kizawa Tunnel
Laser-scanned east wall of Kizawa Tunnel
This figure shows(a) west and (b) east walls of the tunnel, and the (c) tunnel cross-section at 59m from the north mouth(looking northward). Since the ring shape of the tunnel cross-section sustains the soil pressure, the crack pattern seemed to be serious, and as a quick emergency measure, a thick steel frame was built up beneath the tunnel’s crown.

Dainichiyama landslide
Dainichi-yama landslide

National Route 291

Haguroyama Tunnel

Buckled pavement of Route 291
Buckled pavement of Route 291 at Uragara

Myoken landslide 01
Slope failure at Myoken,

Shin-Enokitoge tunnel
South mouth of JR Enoki Tunnel was clooged up.

Yokowatashi landslide

Railway fill
Failure of railway fill near Tenno
Photo by K. Konagai on

Damage to prefectural route
Prefectural route 71 leading to Shiotani Tunnel

Elevation change before and after the Mid-Niigata Prefecture Earthquake
In the Oct. 23 2004 Mid-Niigata Prefecture Earthquake

Dainichiyama landslide mass
Digital elevation model of Dainichiyama landslide mass

Myoken and Yokowatashi landslide masses
Digital elevation models of Myoken and Yokowatashi landslide masses

River terraces
River terraces along Shinano River

Terraces along Shinano River
3D-view of river terraces along Shinano River