산불피해 저감을 위한 적정 주수방법 제안 - 건축물화재-산불전이 현장실험 사례연구를 통해 -
Suggestion of Proper Method of Water Stream for Reduction of Fire Damage - Through a Case Study of Forest Fire Transition Field Experiment -
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초록
최근 산림인접지 내 건축물화재로 인한 산불전이 비율은 계속해서 증가하고 있는 추세이며, 이를최소화하기 위해서는 건축물 화재-산불 전이와 관련된 연구수행 및 대책 마련이 시급한 실정이다. 본 연구에서는 건축물화재로 인한 산불전이 실물실험을 통해 비화행동을 분석하여 산불피해저감을위한 적정주수방법을 제안하고자 하였다. 주수방식을 적용한 비화거리 측정 결과, 직사주수방식은15.7m, 분사주수방식은 10.0m로 측정되었으며, 직사주수방식을 이용하여 진화했을 때, 수압으로 인해 시설물이 붕괴되면서 비화크기 및 거리가 증가하는 현상을 확인하였다. 결과적으로 분사주수방식 적용 시, 직사주수방식 대비 비화거리는 44.2%, 비화크기는 58.7%, 비화발생량은 84.7%, 착화가능성은 10.0%의 감소 효과가 있을 것으로 예측되었다. 이에 따라 산림인접지 내 건축물 화재 진화시 산불전이 저감을 위해서는 분사주수방식을 적용하는 것이 타당할 것으로 사료된다.
Abstract
Recently, the rate of forest fire transition from building fires has continued to increase. To minimize forest fire damage, it is urgent to conduct research related to forest fire transition from building fires and prepare countermeasures. In this study, proper water stream method for reduction of fire damage was proposed through a real-scale fire experiment. According to the results of this study, spotting distance with straight stream was measured at 15.7m and spotting distance with sprayed stream was measured at 10.0m. Especially, when the fire was extinguished using the straight stream method, the size of the spotting and the distance of the spotting increased as the facility collapsed due to water pressure. As a result, if the fire is extinguished by applying the sprayed stream method, it is predicted that there will be a reduction effect of 44.2% of the spotting distance, 58.7% of spotting size, 84.7% of the amount of spotting and 10% of the ignition possibility. Therefore, it is considered reasonable to apply sprayed water stream when extinguishing building fires in Wildland-urban Interface (WUI).
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