黄河下游放淤固堤宽度研究  

Research on Width of Levee Reinforcement by Warping of Lower Yellow River

作　　者：潘明强[1] 王俊昀[1] PAN Mingqiang;WANG Junyun(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《人民黄河》2018年第8期44-47,共4页Yellow River

摘　　要：为有效利用土地资源,科学论证黄河下游放淤固堤宽度,通过分析黄河下游地质资料,发现下游堤防渗透破坏的主要原因是堤身土料黏粒含量少、土质不均匀,以及堤脚低洼,坑塘多,堤基存在浅层透水砂层。考虑到黄河下游堤防质量参差不齐,出险原因各异,主要从三个方面论证放淤固堤宽度:一是对黄河下游堤防历史险情进行统计分析,黄河下游发生渗水、管涌等渗透破坏的情形,85%分布在距堤脚50 m以内,14%分布在距堤脚50~100 m范围内;二是借鉴国内外放淤固堤宽度的研究成果,黄河下游放淤固堤宽度应超过100 m;三是依据地质勘察成果,开展堤防渗流稳定计算,验证放淤固堤宽度80~100 m的效果。最终得出黄河下游较为科学的放淤固堤宽度为80~100 m。The levees of the Lower Yellow River are subject to seepage damage due to the lower clay content,inhomogeneous soil,permeable strata in the levee foundation and many pits and ditches near the levee landward slope. Warping is one of the major methods to reinforce the levee and mitigate seepage damage in the Lower Yellow River while the warping width is a key index. Three aspects were taking into consideration in determination of the warping width in this paper. Firstly,the statistical data of levee seepage in the history of Lower Yellow River showed that 85% seepage damage distance was less than 50 m（ from the levee toe to the damage point） and 14% was between 50 m and 100 m. Secondly,domestic research results of warping width recommend that the warping width in the Lower Yellow River should be more than100 m. Thirdly,levee with warping width between 80 m and 100 m had less seepage damage according to levee seepage stability calculation.Based on this analysis,the scientific warping width of levee in the Lower Yellow River is between 80 m and 100 m.

关 键 词：放淤固堤宽度 渗透破坏 黄河下游 

分 类 号：TV871[水利工程—水利水电工程] TV882.1