CAJ | 학술논문

姑巴沟是四川安宁河流域内最具代表性的典型低频泥石流之一。基于野外调查的基础上，对姑巴沟泥石流的动力学特征进行了计算，并对2011年泥石流的成因机制进行了分析。研究认为，姑巴沟泥石流的触发原因是由持续强降雨引发的沟道径流与上游冰湖溢水的综合作用，水动力补给过程具有复合特征。针对姑巴沟泥石流爆发突然、流体流量大流速高及其威胁对象的分布特征，提出了针对性的防灾减灾建议，对揭示姑巴沟泥石流的形成过程及动力学特征具有实际意义，并可为安宁河流域内其它具有相似孕灾背景的低频泥石流形成机理的认识提供参考。
고파구시사천안저하류역내최구대표성적전형저빈니석류지일。기우야외조사적기출상，대고파구니석류적동역학특정진행료계산，병대2011년니석류적성인궤제진행료분석。연구인위，고파구니석류적촉발원인시유지속강강우인발적구도경류여상유빙호일수적종합작용，수동력보급과정구유복합특정。침대고파구니석류폭발돌연、류체류량대류속고급기위협대상적분포특정，제출료침대성적방재감재건의，대게시고파구니석류적형성과정급동역학특정구유실제의의，병가위안저하류역내기타구유상사잉재배경적저빈니석류형성궤리적인식제공삼고。
Guba debris flow is one of the most typical debris flows with low return period in Anning Valley, Sichuan Qrovince.Based on the field survey,we calculate the dynamic properties and analyze the genetic mecha-nism of Guba debris flow occurred in 201 1 .Results show that,combined effect of gully runoff from sustained heavy rainfall and overflow from glacial lakes upstream triggered the disaster.The water power supply processes show complex features.According to the characteristics of sudden outbreak,heavy flow,high speed and particular posi-tion of the affected targets in Guba debris flow,proposals are put forward for prevention and reduction.It has prac-tical significance to reveal forming process and dynamic properties of Guba debris flow,which could also be a refer-ence to understanding the formation mechanism of low frequency debris flow with similar backgrounds in Anning Valley.