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中文摘要：
冰河广泛地在西藏的西南被开发，冰碛与大深度是广泛地分布式的。大规模碎片流动经常被报导它堵住了河并且形成了水坝。在这篇论文，在四条山谷的七大碎片流动被讨论，在哪个之中五个水坝发展了。实验的 13 个集合在实验室被进行了模仿水坝的形成和失败。最后，水坝失败的一个模型被建议，一个公式被建立计算洪水分泌物：在 b_k 是在原来的水水平的水坝的插头宽度的地方， h_k 腐蚀深度， T 失败的最后的状态的从溢出的时间，湖的平均宽度；L 湖的长度，和 G 在湖的水的全部的势能。
英文摘要：
Glaciers are extensively developed in the southwest of Tibet and the moraines are widely distributed with large depth. Large-scale debris flows are often reported which blocked rivers and formed dams. In this paper, seven large debris flows in four valleys are discussed, among which five dams developed. 13 sets of experiments have been conducted in laboratory to simulate the formation and failure of the dam. Finally, a model of dam failure is proposed and a formula is established to calculate the flood discharge： Q=kbnnk/TB^-/LG^0.1,where bk is the outlet width of the dam at the original water level, hk the erosive depth, T the time from overflow to final state of failure, the average width of lake; L the length of the lake, and G the total potential energy of the water in the lake.
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