峨边彝族自治县哈曲乡瓦噶村哈曲来挖沟泥石流发育特征及防治建议  

Development Characteristics and Control Suggestions of Debris Flow in Haqulai Gully,Waga Village,Haqu Township,Ebian Yi Autonomous County

作　　者：黄泽森 刘力勋 黄文 石一翔 周威 HUANG Zesen;LIU Lixun;HUANG Wen;SHI Yixiang;ZHOU Wei(The Seventh Geological Team of Sichuan,Leshan,Sichuan 614200)

机构地区：[1]四川省第七地质大队,四川乐山614200

出　　处：《四川地质学报》2024年第3期489-493,共5页Acta Geologica Sichuan

摘　　要：2019年8月20日,峨边县哈曲来挖沟暴发泥石流灾害,造成沟口乡政府大院内泥石流淤积,部分房屋受损,泥石流堆积方量约2000 m^(3)。哈曲来挖沟汇水面积不大,但沟道顺直,纵坡降较大,为一典型沟谷型泥石流,沟内松散物源丰富,在降雨条件下,具有成因复杂、暴发突然、危害性大的特点。针对哈曲来挖沟泥石流发育特点,通过现场调查,查明泥石流发育的自然环境、形成条件、基本特征及危害,对重要泥石流特征值包括泥石流流体重度、流速、流量、一次冲出量、一次固体冲出物质总量、泥石流整体冲压力、爬高和最大冲起高度等,进行定量计算。并根据勘查资料结合泥石流沟发育特征,设计停淤+拦挡+排导措施进行综合整治。On August 20,2019,a debris flow disaster broke out in Haqulai gully excavation in Ebian County,resulting in the deposition of debris flow in the courtyard of Goukou Township Government,some houses were damaged,and the volume of debris flow accumulation was about 2000 m^(3).The catchment area of Haqulai gully is small,but the trench is straight and the longitudinal slope is large,which is a typical gully type debris flow.The loose material source in the gully is rich,and it has the characteristics of complex origin,sudden outbreak and great harm under the condition of rainfall.According to the development characteristics of debris flow in Haqulai gully,the natural environment,formation conditions,basic characteristics and hazards of debris flow were found out through field investigation.The important characteristic values of debris flow,including debris flow fluid gravity,velocity,discharge,one time outflow,one-time solid outflow,the whole impact pressure of debris flow,climbing height and maximum impact height,are quantitatively calculated.According to the survey data and the development characteristics of debris flow gully,the measures of stopping sedimentation+blocking+drainage are designed for comprehensive remediation.

关 键 词：泥石流 形成条件 发育特征 防治建议 

分 类 号：P642.23[天文地球—工程地质学]