红黏土在南方土石坝中的应用研究

Research on Application of Red Clay in South Earth-Rock Dam

德厚水库是一座建设于岩溶区的大型水利工程,大坝采用黏土心墙堆石坝,防渗心墙采用南方红黏土填筑,防渗性能好,但存在黏粒含量及天然含水率高的问题。文章通过室内试验、工程类比、现场碾压试验进行研究分析,提出适合的施工工艺措施,可为类似以典型南方红黏土筑坝的工程提供借鉴。

Dehou Reservoir is a large-scale water conservancy project built in karst area.Clay core-wall rock-fill dam is adopted for the dam.Watertight core is filled with southern red clay.The seepage prevention performance is good.However,there are still problems of high clay particle content and high natural moisture content.In the paper,suitable construction technology measures are proposed through the research and analysis of laboratory test,engineering analogy and field roller compaction test,which can provide reference for similar red clay damming projects in south China.