Investigation on the geotechnical properties of scoria and roads depression caused by snow melting at Fuji forest roads

Abstract

 In March 2013, surface depression of asphalt pavement over 300m was found at the point of elevation 1950m to 5th station of Mt.Fuji on Yamanashi Prefectural forest roads Takizawa line. It was widely reported in the media. On the other hand, The World Heritage Committee of UNESCO decided on June 22,2013 to inscribe Mount Fuji on the U.N. agency's prestigious World Heritage list. It is necessary to clarify the factors Takizawa roads depression and apply knowledge maintenance in the future.
 In this study, based on the field survey, it is considered the terrain , rain and temperature. In addition, it is considered the factors for predisposition and incentive by weather observation and soil test for the ground material of Takizawa forest roads.