面板坝软岩料的工程特性

Engineering Properties of Soft Rock Materials Used in Concrete Face Dams

面板坝是当今国内外大坝建设中的主要坝型。以往面板坝要求用硬岩填筑,但是近十余年来,软岩料的利用已成为一个重要的趋势。有的高坝也以软岩料作为主堆石料,今后超100 m级的软岩坝也是可能的。为此,有必要加强对软岩工程特性的研究。基于大坳、鱼跳、盘石头、寺坪、十三陵上池、云南茄子山、水布垭等面板堆石坝软岩料的试验结果及工程应用情况,对软岩的物理、力学特性进行评价和总结。

Concrete face dam has been a main type of dams in modern times. In the early period, only hard rock materials were allowed to use as filling materials. But in the past ten years, soft rock materials have been increasingly utilized in concrete face darns to save construction time and costs. Even in a few of high dams, soft rock materials were put in the main filling zones. In the near future, it may be possible that using soft rock material to built concrete face dams of more than 100 m in height. So, it is important to make more studies on the engineering properties of soft rock materials. This paper gives a summarization and evaluation of the physical and mechanical properties of soft rock materials on the basis of the test researches and application practices in the Daao Dam, Yutiao Dam, Siping Dam, etc..