INSTABILITY OF ROCK-FILL SPUR-DYKES IN MOUNTAINOUS RIVERS AND COUNTERMEASURES

摘要：

Rock-fill spur-dykes are often destroyed due to rapid flows in mountainous rivers.On the basis of laboratory work in a flume, this paper describes the instability of rock-fill spur-dykes qualitatively, analyzing the classification of direct damage and indirect damage, respectively, and some main influencing factors as well, also summarizes countermeasures against the instability.Furthermore, the analyses of turbulent flow around the spur-dyke and its role on the riprap protection are performed, accordingly the layout of geotextile soft mattress as a countermeasure is determined.Observations on the entrainment of the top stones show that dune-shaped rock-fill spur-dyke improves the stability of rock, and therefore modification in cross-section of spur-dykes is proposed as a countermeasure against the direct damage.

关键词： rock-fill spur-dyke instability countermeasure

作者: Mingyuan Yang Yan Lu Yongjun Lu

作者单位: State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University, Nanjin Nanjing Hydraulic Research Institute, Nanjing 210029, China

会议类型: 国际会议

会议名称: 第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)

会议地点: 南京

会议语种:英文

页码: 1652-1657

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）