防灾减灾工程学报2017，Vol.37Issue(5)：756-762,7.DOI:10.13409/j.cnki.jdpme.2017.05.009
泥石流浆体冲击拦砂坝荷载计算的实验研究
Experimental Study on Debris Flow Slurry Impact
摘要
Abstract
The debris flow impact size is one of the most important parameters for designing debris flow hazards prevention project,but so far,there is a dispute of the calculation of debris flow impact.This paper analyzes the different debris impacts on the debris dam under different densities of debris flow,channel slope and the angle of debris dam to meet the water through the indoor flume experiment testing.This research shows that the main factors influencing the debris flow impact size is debris flow density,channel slope,and debris flow velocity;Other factors are equal.Debris flow impact size decreases with increasing of debris flow density,increases with the increase of channel slope;Debris flow density and the channel slope mainly reflect the influence of the change of debris flow velocity.We deduces a new formula of debris flow impact size.The formula shows that the debris impact size has a linear relation with debris flow velocity,and the linear coefficient varies because of the debris flow density.This paper compares the differences of the new formula with the original formula and illustrates the practical value and provides a technical support to new designing prevention projects of debris flow.关键词
泥石流/防治工程/浆体冲击力/水槽实验Key words
debris flows/prevention engineering/slurry impact force/flume experiment分类
天文与地球科学引用本文复制引用
赵海鑫,游勇,柳金峰,杨东旭..泥石流浆体冲击拦砂坝荷载计算的实验研究[J].防灾减灾工程学报,2017,37(5):756-762,7.基金项目
国家科技支撑计划课题(2014BAL05B01)、中国科学院STS项目(KFJ-EW-STS-094)资助 （2014BAL05B01）
