Many landslide-prone slopes were identified in the whole country of Japan and preventive structures were implemented against them. However, there were reports that property damage and life loss were still caused by landslides despite of existing preventive structures. Thus, the validity of some structures should be investigated. The discontinuous deformation (DDA) is known as an appropriate numerical tool to this problem since it can be used to simulate the mass movements after failure. In this paper, we propose an approach to access the validity of preventive structures by simulating the landslide movement using DDA. This approach has been used to access the validity of the preventive structure on the slope at Taketa, Oita prefecture, Japan. The results show that the assessment is believable and acceptable. From the simulation results, an induced index, which indicates the movement difference between preventive structures existing and none, is used to present the effectiveness of preventive structures. This index can be used to both existing structures and future ones in design.
|Publication status||Published - 2011|
All Science Journal Classification (ASJC) codes
- Geochemistry and Petrology