環境保全(2)

[VII-89] About examination of efficiency improvement of windthrow risk measures

〇takeshi shinagawa¹, Tetsuzou Kozawa¹, Shunji Masuda ¹, Junya Gokurakuji¹, Tomoki Shibata², Takeshi Shigetomi² (1.West Nippon Expressway Engineering Chugoku Co.,Ltd., 2.West Nippon Expressway Co.,Ltd.)

Keywords:Green space management, Fallen tree risk, Ground laser, Aviation laser, 3D measurement, Efficiency