首次揭示川藏公路南线然乌至培龙段冰川、冰湖、冰湖溃决、冰湖溃决泥石
流形成、泥石流坝形成、泥石流坝溃决区域的环境背景、活动特点、分布规律、
激发因素、形成机制和发展趋势；首次查明然乌至培龙段公路两侧分布有大小不
同冰川461 条、冰湖131 个，有潜在溃决危险的冰湖7 个；查明了具有冰川分布
的泥石流沟67 条，按成因分类，将该区域泥石流分为五种类型，按泥石流规模
进行了活动强度分区，并分析了泥石流的发展趋势；首次建立了川藏公路南线然
乌至培龙段冰川和冰湖及冰湖溃决泥石流危险性分区资料数据编目库查询系统；
基于比例尺1:100000 的数字化地形图和GIS 技术，首次编制了川藏公路南线然
乌至培龙段冰川、冰湖和冰湖溃决泥石流及泥石流坝溃决的危险性分区图，实现
了对该路段冰湖状况完整准确的把握；利用野外考察资料结合室内模拟试验，以
及冰湖溃决泥石流运动、溃决模型建立，建立了泥石流形成的临界判别式、泥石
流最大表面流速、冰湖溃决泥石流峰值流量、泥石流最大体积比、泥石流最大输
沙率、泥石流输沙总量、泥石流龙头计算、泥石流堵河判定系数、泥石流堵塞坝
溃决洪水洪峰流量等系列计算公式；在米堆沟口建立一套从冰湖溃决至泥石流坝
溃决的自动监测预警系统；首次提出或引用比较合适的公式，计算了从冰湖溃决、
冰湖溃决泥石流形成、泥石流坝形成、泥石流坝溃决、溃决洪水演进的5 个系列
过程；并结合典型点莫如弄巴错下湖进行了溃决演算；在国内首次运用和建立一
组防治冰湖泥石流坝溃决综合防治技术系统，并对莫如弄巴错下湖溃决至泥石流
坝溃决提出了一套前期、应急和后期综合防治技术方案及关键技术；探明了冰湖
溃决泥石流的形成条件和泥石流堵塞坝的形成机制；分析了受全球气候变化影
响，冰湖溃决泥石流的发展趋势。

This report is the first to reveal the environment, activity, distribution, developing trend, and
the impact factors for the forming of dams due to debris flow induced by glacier lake break in the area between Ranwu and Peilong in the Sichuan-Tibet Highway. It is also the first to find there are 131 glacier lakes in the study area, of which 7 are the most potential of disaster. The first to establish the database of the risk division in the Ranwu-Peilong section of the Sichuan-Tibet highway for glacier lakes, lake breaks, debris flows induced by the break, and dammed lakes by debris flow.
The first to creat the risk division map (in scale of 1:100 000) of glacier lake break in the
study area, using GIS techniques based on the DEM topography map. A series of empirical formulas are eatablished byasedon field surveys and experiments
The first to establish the automatic system of monitoring the dam in the study area.
The first to explore the processes including ice fall, lake break, debris flow formation,
debris flow damming, dam break, and the flood due to dam failure. The first to use appropriate formulas to calculate the peak discharge of break flood, discharge of debris flow, the height of debris flow dam, the peak discharge due to the dam failure, and the discharge variation along the stream channel. The first to propose an integrated treatment to control the series disasters due to glacier lake break, debris flow formation, debris flow damming, and the dam failure.