Abstract

Every year, in Korea, extensive damage due to large and small steep slope disasters occurs. Recently, disasters related to steep slopes showed decreased damage areas, but increase casualties. This is the result of damage occurring in downtown areas becoming more common. The management of steep slopes in downtown areas is the responsibility of local government. Local governments manage them by following the Disaster Risk Assessment Criteria for Slope and the Manual on Slope Management. However, some of the criteria and surveys are inappropriate for use. In this study, the problems with the steep slope disaster risk assessment criteria and the surveys from the Manual on Slope Management were identified and improvements were presented. For the Disaster Risk Assessment Criteria, revision were proposed when the content that did not match the definition of a steep slope, as well as improvements to the scoring criteria. In the steep slope survey form, duplicate survey contents and unnecessary items were deleted, and the composition of the survey was changed to make it easier for investigators.

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