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1泥石流灾害1．1概述1996年12月6日，在日本新泻省和长野省交界的奥泰瑞村家马花山沟中发生了泥石流灾害（图1），有14名工人死亡，8人受伤，这些工人当时正在家马花山沟和信浓川河泄流处附近的佐渡大坝现场施工。根据建设部初步估算，泥石流堆积物的体积达5到10万m3。这次灾害
1 Debris Flow Disaster 1.1 Overview On December 6, 1996, a landslide disaster occurred in Mahuashangou, the home of the Ottawa Village at the junction of Niigata Prefecture and Nagano Prefecture in Japan (Figure 1), killing 14 workers and 8 The workers were injured at the site of the Sado Dam near Mahuashangou and the Xinin River drainage. According to a preliminary estimation by the Ministry of Construction, the volume of debris flow deposits reaches 5 to 100,000 m3. This disaster