Avoid the danger of cyclopean rockfalls behind private houses

Yonago district, Niigata Prefecture Public sand control work
* Embankment height (m): 6.5 * Approximate construction extension (m): 65
* Rockfall diameter (m): D = 1.0 * Converted fall height (m): H = 26.5
* Rockfall energy (kJ): E = 360