Most of the drinking water dams managed by the local governments in Korea are earthfill dams, and these dams have almost no geotechnical property information necessary for seismic performance evaluation. Nevertheless, in the rough planning stage for improving seismic safety for these dams, it is necessary to classify their relative seismic hazard against earthquakes and conduct an additional ground investigation. The zero seismic failure probability curve is a curve suggested in this study in which the probability of failure due to an earthquake becomes ‘0’ regardless of the geotechnical properties of the earthfill dam. By examining the method and procedure for calculating failure probability due to an earthquake suggested in previous researches, the zero seismic failure probability curves for an earthquake in 1,000-year and 2,400-year return periods in Korea were presented in the form of a hyperbola on the plane of the dam height versus freeboard ratio (ratio of freeboard to dam height), respectively. The distribution characteristics of the dam height and the freeboard ratio of 81 Korean earthfill dams were presented. The two proposed zero seismic failure probability curves are shown on the plane of the dam height versus freeboard ratio, and the relative seismic hazard of 81 dams can be classified into three groups using these curves as boundaries. This study presented the method of classifying the relative seismic hazard and the classification result.

본 연구에서는 강원도 삼척시 지역을 대상으로 산불발생관련 16개 인자별로 주제도로 구축하여 격자 자료로 변환하고 지역단위 산불발생확률을 산출함으로써 산불발생위험지도를 작성하고 진화자원 및 산불감시시설 배치의 적합성을 분석하였다. 또한, 삼척시 지역단위에 해당하는 산불발생확률 모형 추정식을 산출하여 5단계의 산불발생위험등급 지역을 분류하였으며, 산불감시탑, 감시카메라 및 감시초소의 산불감시 범위는 47.9% 정도의 가시권역을 감시할 수 있는 것으로 판단되었다.