蒋家沟是我国一条降雨型泥石流沟谷,位于云南省东北部小江河谷的右岸,流域面积47.1km~2,主沟长12km。该流域沟长超过500m的大小支沟有178条,主要支沟有门前沟、多照沟、大凹子沟、查箐沟和老蒋家沟等。蒋家沟泥石流来临时,高陡的泥石流龙头像胶泥筑起的堤坝,黑浪翻滚,吼声如雷,频频向前,景象十分壮观。据记载,蒋 表1 蒋家沟泥石流年暴发次数及固体径流统计表 Jiangjiagou is a rainfall-type debris flow gully in China. It is located on the right bank of Xiaojiang Valley in the northeast of Yunnan Province. Its drainage area is 47.1km ~ 2 and its main channel length is 12km. The size of the basin ditch more than 500m branch trench has 178, the main branch ditch with the front ditch, more according to the ditch, Daqiuzi ditch, check Dagou ditch and the old Chiang ditch and so on. Jiangjiagou debris flow coming, high and steep mudslide dam built like mastic, black waves rolling, roaring thunderstruck, frequently forward, the scene is very spectacular. According to records, Jiang Table 1 Jiang Jia Gou debris outbreak frequency and the number of solid runoff statistics