黄河龙门段“揭河底”冲刷两种表现形式的分析  

Analysis on Two Forms of Bottom Tearing Scour in Longmen Reach of the Yellow River

作　　者：张清[1] 江恩惠[1] 张扬[1] 

机构地区：[1]黄河水利科学研究院水利部黄河泥沙重点实验室,河南郑州450003

出　　处：《人民黄河》2015年第5期1-3,共3页Yellow River

基　　金："十二五"国家科技支撑计划项目(2012BAB02B01);水利部公益性行业科研专项(201101009)

摘　　要：对黄河龙门河段"1969·7"和"2002·7"两场洪水的水文资料进行了分析,认为"揭河底"冲刷可分为两种表现形式,一种是"1969·7"洪水期间发生的强烈"揭河底"冲刷,另一种是"2002·7"洪水期间发生的局部"揭河底"冲刷。两种"揭河底"冲刷发生的必要条件为高含沙洪水,河道来水来沙条件是产生强烈"揭河底"冲刷的主要影响因素;而河道边界条件对局部"揭河底"冲刷的影响较大。尽管局部"揭河底"对长距离河道影响较小,但是对于局部工程出险会有较大的影响,应该引起足够重视。After the analysis on the hydrological data of two floods in July, 1969 and July, 2002, the bottom tearing scour could be divided into two forms. One was named as the strong bottom tearing scour （July, 1969）, the other was the local one （July, 2002）. Both of the two forms of bottom tearing scour required hyper - concentrated flood. The incoming water - sediment condition mainly affected the strong bottom tearing scour. But the river boundary condition greatly affected the local one. Although the local bottom tearing scour would not make greater influence on the long river reaches, it also greatly affected the river engineering endangerment, which should be paid enough attention.

关 键 词：冲刷形式 揭河底 龙门段 黄河 

分 类 号：P333[天文地球—水文科学] TV882.1[水利工程—水文学及水资源]