Slope Failure and Landslides

Since the Japanese Prout Villages are often located in mountainous areas, it is necessary to consider the construction location of dome houses and roads in consideration of landslides. Landslides, landslides, and mudslides are also called slope failures. These are more likely to occur due to heavy rains and earthquakes. Therefore, fields should be built at the foot of the slope, which is more susceptible to slope failure, and roads and houses should be built away from the slope.

The following areas are prone to slope failures caused by heavy rain. The first is slopes with a slope of 30 degrees or more, slopes more than 5 meters high with sudden steep slopes in the middle of the slope, valley-shaped (concave) slopes, and slopes with wide gentle slopes above. The last two are topographical conditions where large amounts of water can easily collect.

It is difficult to predict when and where a collapse will occur, but when it does occur, the distance from the edge of the cliff to the top of the sediment is almost always within the same distance as the height of the cliff. In case of a collapse, the distance from the edge of the cliff to the top of the sediment is almost always within the same range as the height of the cliff. However, if the ground is sloped, it reaches farther, and sediment does not spread laterally.