摘要
为了预测滑坡泥石流坝溃决产生的洪峰流量和最大水深,建立了滑坡泥石流坝在自然条件下首次溃决形式的经验公式模型,包括平均宽度bc和残留高Hd2个溃口形式的特征参数。通过野外考察采集的数据以及溃决特征分析,选取影响滑坡泥石流坝溃口形式的主要因子,分别建立了坝高H、有效坝长B、堰塞湖库容W、坝体鞍部单宽体积V、内摩擦系数tanφ以及上限粒径d90共6个因子与溃口形式(即溃口的平均宽度bc和残留高Hd)之间的经验关系公式。将经验预测公式运用到实例进行检验,误差较小。
In order to predict the outburst flood peak discharge and maximum water depth caused by the dam-break,an empirical model was established to calculate the breach parameters of landslide and debris-flow dam under natural conditions,including the average width bcand the residual height Hdof the breach. Based on lots of field works,the data was collected,as well as the analysis of the dam-break characteristics was discussed. The major factors,including dam height H,dam width B,volume of the dam-lake W,unit volume of the dam in longitudinal V,coefficient of internal friction angle tan φ and upper limit particle size d90,which affected the breach of landslide and debris-flow dam,were selected to establish empirical relationships between factors( the average width bcand the residual high Hdof the breach). Finally,the empirical model was applied to the instance test,and the result was acceptable.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2013年第S2期84-89,共6页
Journal of Sichuan University (Engineering Science Edition)
基金
中科院"一三五"方向性项目(SDS-135-1204-01)
四川省交通科技资助项目(2011C17-3-2)
交通部西部交通建设科技资助项目(201231874004-2)
关键词
滑坡
泥石流
溃坝
溃口
landslide
debris flow
dam break
dam breach
