西藏雅鲁藏布江中游是西藏相对发达地区,由于特殊的地质、地貌和气候影响,水土流失十分严重,泥石流活动是当地最普遍的山地灾害,其主要类型为丰富的寒冻风化残坡积的重力侵蚀型和崩塌堵溃型。该地区泥石流具有补给方式单一、形成模式类同以及规模与流域面积相关等特点,根据3年泥石流活动和降雨的相关分析,探讨了雅鲁藏布江中游地区泥石流的预报,并结合西藏的现实,提出了防灾对策。

The middle reach of Yalungtsangpo river is the developed area in Tibet autonomous. Caused by the geology, landform and climate, the water and soil losses is very severe. The debris flow is common and occurrence very often. The main type of debris flow is gravity erosion and slide blocked by the plenty of frozen weather materials. The debris flow has the characteristic of the simple supply; the same formation and the size related the basin. According to the analyses of activity and rainfall, the author has predicted the debris flow in the middle reach of Yalungtsangpo river. The author also points out the police of disaster control based on the fact of Tibet.