CAJ | 학술논문

本文是在野外调查的基础上，结合遥感解译数据，通过对地质环境背景分析，详细阐述了东月各河泥石流灾害的成因与特征：“远距离、大坡降、窄峡谷”的地形条件以及平直的沟道，为本次泥石流的发生提供了强有力的地势条件；流域上游大量的松散堆积物为本次泥石流的暴发提供了充足的物源；泥石流历时2273s，流速4．62m·s－1，流量1008m3·s－1，在沟口形成长度约300m、最大宽度约400m 的堆积扇，冲出方量约60．5×104 m3，一次冲出固体物质总量41．95×104 m3，泥石流流体具结构性，直进性强，运动中无垂直交换，浆体浓稠，浮托力大，具有明显的辅床减阻作用和阵性运动特征，泥石流容重2．04g·cm－3，属于特大型黏性泥石流；泥石流在距沟口2．5km 的弯道处超高现象比较明显，其高度为4．1m，泥石流整体冲击力为64．01kN，单块块石最大撞击力为491．27tf；东月各河泥石流具有“高落差、大坡降、窄峡谷、大体量、高速度、远距离”的特点，其隐蔽性、突发性和破坏性极强，属于典型的“高位”泥石流。对该泥石流的形成机理和运动特征分析，可为整个怒江流域，乃至西南高山峡谷区“高位”泥石流灾害的早期识别、监测预警与风险评价等提供科学依据。
본문시재야외조사적기출상，결합요감해역수거，통과대지질배경배경분석，상세천술료동월각하니석류재해적성인여특정：“원거리、대파강、착협곡”적지형조건이급평직적구도，위본차니석류적발생제공료강유력적지세조건；류역상유대량적송산퇴적물위본차니석류적폭발제공료충족적물원；니석류력시2273s，류속4．62m·s－1，류량1008m3·s－1，재구구형성장도약300m、최대관도약400m 적퇴적선，충출방량약60．5×104 m3，일차충출고체물질총량41．95×104 m3，니석류류체구결구성，직진성강，운동중무수직교환，장체농주，부탁력대，구유명현적보상감조작용화진성운동특정，니석류용중2．04g·cm－3，속우특대형점성니석류；니석류재거구구2．5km 적만도처초고현상비교명현，기고도위4．1m，니석류정체충격력위64．01kN，단괴괴석최대당격력위491．27tf；동월각하니석류구유“고락차、대파강、착협곡、대체량、고속도、원거리”적특점，기은폐성、돌발성화파배성겁강，속우전형적“고위”니석류。대해니석류적형성궤리화운동특정분석，가위정개노강류역，내지서남고산협곡구“고위”니석류재해적조기식별、감측예경여풍험평개등제공과학의거。
The article is based on field survey,and data of remote sensing interpretation.It elaborates genetic mechanism and characteristics of Dongyuege river debris flow hazards.It analyses the geological environmental background.The terrain conditions are long distance,large gradient and narrow canyon and straight channel.It provides a powerful terrain condition for the occurrence of debris flow.There are a lot of loose deposits of upstream. They provide sufficient material sources for the occurrence of debris flow.The debris flow lasted 2273 second.The flow rate was 4.62m· s-1 .The seepage was 1008m3· s-1 .Mizoguchi formed in a length of about 300m,and a maximum width of about 400m of the alluvial fan.The total debris volume was about 60.5×104 m3 .The total solid volume of a single event was of 41.95 ×104 m3 .The fluid was thick paste.The fluid had straight and strong uplift force and had structural movement without vertical exchange.The fluid had obvious characteristics that drag reduction and showers movement.The debris flow density was 2.04g·cm-3 .It was a large viscous debris flow.The corners ultra of debris flow was quite obvious from mizoguchi 2.5km.Its height was 4.1m.The debris flow overall impact was 64.01kN.The single rock block maximum impact force was 491.27 tf.Dongyuege debris flow had the features of high drop,large gradient,narrow canyons,gross volume,high-speed,and long-distance.It also had a characteristic that was hidden,sudden and devastating.It is a typical high debris flow.Analysing the debris flow mechanism and movement characteristics can provide a scientific basis for the early identification,monitoring warning and risk evaluation of the entire Nujiang River Basin,as well as the southwest mountains and canyons area high debris flow.