双层堤基管涌模型试验研究

• 作 者: 郭书亮
• 机 构: 重庆工贸职业技术学院,
• 出 处: 产业与科技论坛
• 发表日期: 2013年20期
• 关键词: 双层堤基 模型试验 临界坡降

本文针对双层堤基管涌进行了砂槽模型试验,观察并分析了管涌发生、发展以及导致溃堤过程当中的现象。试验表明,双层堤基管涌孔口都产生在覆盖层薄弱处,管涌通道的位置也都发生在堤基砂层的顶部,无论是以流土型土体为地基的双层堤基还是以“管涌”型土体为地基的双层堤基,管涌通道的渗透破坏都开始于覆盖层薄弱处。

In this paper, the sand tank model test was carried out for the double-layer pipe embankment, and the occurrence and development of the pipe burst and the phenomena leading to the embankment collapse were observed and analyzed. The test shows that the pipe bores of double dykes are all formed at the weakness of the covering layer and the location of the piping channel also occurs at the top of the levee sand layer. Whether it is a double levee foundation with flowing soil type or “Pouring ” type of soil as the foundation of the two-story embankment, piping passage infiltration and destruction began in the cover of weaknesses.