STUDY ON A DISASTER MITIGATION METHOD USING MASONRY WALLS WITH FENCES AGAINST DEBRIS FLOW AROUND HOUSES

Abstract

 Manuals about the refuge support at the time of the natural disaster outbreak for people vulnerable to disaster such as children and elderly person have been maintained in many local governments. However, an effect of the past reporting type disaster prevention has a limit, and it is necessary to think about the measures as a public infrastructure. In this study, a damage reduction method from the natural disaster around houses, which are a place of the everyday life, is discussed. A masonry wall with the fence is considered to be a disaster prevention structure in order to develop the system which can be used not only at the time of a disaster but also at the time of daily life. The stability of the disaster prevention structure against the debris flow was investigated.
 Experiments on the strength of the disaster prevention structure against debris flow were conducted as simulating the force by debris flow by the actuator. It is examined whether the masonry wall with the fence is applicable as a disaster prevention structure by considering the strength of the wall, and possible cases in which the masonry wall with the fence can be expected as the disaster prevention structure are presented.