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1984年7月18日晚上9点左右,四川省南坪县城区后山普降暴雨,至晚上10点城南关庙沟、城北叭拉沟和城区上游7公里的撮箕沟,同时暴发了灾害性的泥石流。顷刻间大量洪水汇集沟槽,席卷着巨大岩块、泥沙,以排山倒海之势倾注下泻,龙头高达7—10米,前锋直捣白水江对岸并堵江成湖三处,使南坪县城附近13公里范围内,平地起水6—7米。晚上11:00—11:30才结束了这场泥石流暴发的全过程。
At about 9 pm on July 18, 1984, a heavy rain hit the back of the hill in Nanping County, Sichuan Province, to the Miaoguan Miaogou Ditch at 10 o’clock in the afternoon, the Beigalakou ditch north of the city, and the Jianjigou 7 km upstream from the urban area. At the same time, a disaster Sexual debris flow. Immediately flood a large collection of trenches, swept huge rock, sediment, pouring into the mountains and pouring the downward trend, leading up to 7-10 meters, striker pound Whitewater River and across the river and blocking the three rivers, near Nanping County Within 13 kilometers, the ground water 6-7 meters. 11: 00-11: 30 in the evening to end the whole process of the outbreak of debris flow.