海南昌江县红林农场26队泥石流发育特征及成因分析  

DEVELOPMENT CHARACTERISTICS AND GENESIS ANALYSIS OF DEBRIS FLOW IN TEAM 26 OF HONGLIN FARM, CHANGJIANG COUNTY,HAINAN PROVINCE

作　　者：李信 薛桂澄[1] 柳长柱[1] 阮明[1] 夏南 常振宇 LI Xin;XUE Gui-cheng;LIU Chang-zhu;RUAN Ming;XIA Nan;CHANG Zhen-yu(Hainan Geological Survey,Haikou 570206,China;Hainan Comprehensive Geological Survey, Haikou 570206,China)

机构地区：[1]海南省地质调查院,海口570206 [2]海南省地质综合勘察院,海口570206

出　　处：《地质灾害与环境保护》2019年第1期3-9,共7页Journal of Geological Hazards and Environment Preservation

摘　　要：以昌江县红林农场26队泥石流沟为研究对象,泥石流沟发育特征及分析其泥石流形成条件,并对其危险性进行评价。结果表明:红林农场26队泥石流沟的地形条件、沟床比降和汇水面积等构成了泥石流沟发育的先天条件,泥石流沟上部的松散堆积物和破面崩滑物为泥石流的启动提供了物源,前期的强台风和短时间的强降雨天气诱发和启动了泥石流的爆发。Taking the debris flow gully of team 26 in Honglin Farm of Changjiang county as the research object, the development characteristics of debris flow gully and the formation conditions of debris flow were analyzed, and the risk of debris flow gully was evaluated. The results show that the terrain conditions, bed ratio drop and catchment area of debris flow gully in team 26 of Honglin Farm constitute the innate conditions for debris flow gully development. Loose deposits and broken surface debris provide the material source for debris flow initiation. The strong typhoon and short-term heavy rainfall induced and initiated debris flow eruption in the early stage.

关 键 词：泥石流 物源区 形成区 流通区 堆积区 

分 类 号：P642.23[天文地球—工程地质学]