长江口软土地基水库围堤的防渗体结构探讨

发布时间：2018-01-05 21:21

本文关键词：长江口软土地基水库围堤的防渗体结构探讨　出处：《岩土工程学报》2016年S1期 　论文类型：期刊论文

【摘要】：充泥管袋充填粉细砂技术,在长江口软土地基上修筑围堤,取得了较好的效果。但围堤堤身均由透水性较强的粉砂料填筑而成,且围堤堤基浅部地层通常分布有粉土、粉砂土,属中等透水且易产生渗透变形。在库内外水头差的作用下,堤身、堤基土均可能产生渗漏及渗透变形问题,因此,水库围堤必须要采取渗流控制处理措施。结合本工程渗流控制措施的特点和难点,进行了多方案比选,并根据现场原型试验确定防渗体结构的最终结构形式和施工参数。还对推荐方案进行了详细的渗流控制分析计算,为类似工程提供参考。
[Abstract]:The technology of mud filled bag filling sand, soft soil based on the construction of the dike in the Yangtze River Estuary, and achieved good results. But all silt filling dike dike by strong water permeability and shallow foundation, and the distribution of strata usually dike silt, silty sand, which is of medium grade and easy to produce seepage deformation in the library. Body under the action of water head difference between the inside and outside, and foundation soil may produce leakage and seepage deformation problems, therefore, must take the reservoir embankment seepage control measures. According to the characteristics and difficulties of seepage control measures of the project, the scheme selection, and determined according to the impervious structure of the final structure and form the construction parameters of prototype test. The recommended scheme for the control of the detailed analysis of seepage calculation, provide a reference for similar projects.

【作者单位】：长江勘测规划设计研究有限责任公司上海分公司;
【分类号】：TV223.4
【正文快照】： 1概述太仓市应急水源地工程位于长江口南支浏河口上游侧长江边滩上,滩面高程0.5~-4.0 m(国家85高程,下同),占用岸线2362 m。水源地总面积220万m2,由北堤、东堤、南堤及西堤圈围而成,其中北堤、东堤、南堤是水源地新建围堤,总长4486 m,西堤利用原太仓长江大堤按水源地工程及区

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