清水冲刷不连续宽级配床面阻力特性及输沙规律试验研究(Ⅱ)——输沙规律  

Experimental study of flow resistance and bed load transport of bed material with discontinuous wide-gradation sediment by clear water scouring(Ⅱ)——Bed load transport law

作　　者：魏丽[1,2] 卢金友[3] 徐海涛[3] 

机构地区：[1]中国科学院山地灾害与地表过程重点实验室,四川成都610041 [2]中国科学院-水利部成都山地灾害与环境研究所,四川成都610041 [3]长江水利委员会长江科学院,湖北武汉430010

出　　处：《泥沙研究》2012年第4期24-29,共6页Journal of Sediment Research

基　　金：国家自然科学基金(50879006);中国科学院知识创新工程重要方向项目群(KZCX2-YW-JS305);中国科学院成都山地灾害与环境研究所青年百人团队项目资助

摘　　要：以天然河床中广泛存在的不连续宽级配床沙为例,开展了清水冲刷水槽试验研究。通过水槽试验对清水冲刷不连续宽级配床面推移质输沙率衰减规律、推移质级配及推移质输沙率的计算进行了分析与探讨,得到了清水冲刷不连续宽级配床面的一系列输沙规律,揭示了不连续宽级配床面与连续宽级配床面输沙规律的联系,为进一步认识不连续宽级配床沙提供了基础。Flume experiments of bed load transport by clear water scouring were carried out for the discontinuous wide-gradation sediment that widely exists in natural rivers.According to the flume experiment data of steady clear water scouring,the decay law of bed load transport rate,bed load size distribution and calculation of bed load transport rate are analyzed.A series of transport law of discontinuous wide-gradation sediment bed by clear water scouring are obtained and the relation of discontinuous and continuous wide-gradation sediment is revealed,those provide the basis for the research about discontinuous wide-gradation sediment.

关 键 词：不连续宽级配床沙 输沙率变化 推移质级配 输沙规律 

分 类 号：TV143.4[水利工程—水力学及河流动力学]