摘要
以黑水县俄瓜热十多沟泥石流为研究对象,以工程地质条件和泥石流基本特征为基础,对俄瓜热十多沟泥石流成因机制及防治措施进行了分析研究。研究结果表明:(1)“5·12”汶川大地震后,沟内物源增加,特别是沟床及沟岸物源受地震影响,稳定性降低,为泥石流的形成提供了物质基础;(2)“7·9”特大暴雨前该地区连续多天降雨,导致沟内水量增加,降低了沟内物质整体稳定性,从而“7·9”特大暴雨激发了泥石流发生。针对俄瓜热十多沟泥石流具有突发性、破坏性等特点,提出以“拦固”为主,辅以“排导”的防治措施。
Taking heishui county egua-reshiduogou debris flow as a research subject based on the engineering geological condition and the basic characteristics of debris flow,to egua-reshiduogou formation mechanism and control measures for the in-depth analysis and research.The results prove that,first,after“5·12”wenchuan earthquake,the trench content source increases,especially the bed and bank content source affected by the earthquake,the stability is reduced,which provides the materials basis for the debris flow.second,that area kept raining for several days before“7·9”rainstorm,that caused the water yield of the inside trench increases,the overall stability of the material in the trench reduces.Therefore,“7·9”rainstorm stirred up the debris flow.With the features of the egua-reshiduogou debris flow such as sudden and destructive offered to“block solid”first,“guide”second prevention and control measures.
作者
袁凤凯
宋磊
YUAN Feng-kai;SONG Lei(Tibet Jinhai Mineral Resources Development Co.,Ltd.,Chengdu 610081,China;Sichuan Province,Radiation Protection Institute of Nuclear Industry Test,Chengdu 610061,China)
出处
《南水北调与水利科技》
CSCD
北大核心
2015年第S01期192-195,219,共5页
South-to-North Water Transfers and Water Science & Technology
关键词
俄瓜热十多沟
泥石流
成因
防治
Egua-reshiduogou
mud-rock flow
cause
prevention and cure
