王瑶水库加坝扩容工程筑坝土料分散性研究

Dam Soil Dispersity Study of the Project of Adding Damand Dilatation of Wangyao Reservoir

土料分散性是筑坝土性质量关键性指标之一,影响着大坝工程长久安全使用,关注其特性及其物化特点是指导工程设计合理选择处理方案的重要依据。通过对土料基本物性试验,结合采用双比重计试验、碎块试验、针孔试验等方法研究土料的分散特性,得出一般黄土料用不同试验方法其分散性具有多样性成果,需采用合理方法予以评判,旨在对分布广泛的黄土中代表王瑶水库筑坝土料进行分析评价,以便为今后工程中判定利用此区风积黄土有一定的现实意义。

Soil dispersity,which greatly influences safety and longevity of dams,is one of the key properties of dam soil.Its characters and physicochemical properties provide important basis for project design and processing scheme.In this paper,through the basic physical property test of soil materials,combined with the double hydrometer test,fragment test,pinhole test and other methods to study the dispersion characteristics of soil materials,it is concluded that the dispersion of different test methods of general loess materials has a variety of results,which needs to be judged by a reasonable method.The purpose of this paper is to analyze and evaluate the dam materials of Wangyao Reservoir,which is the representative of the widely distributed loess,so as to achieve the practical significance of how to judge and utilize the Aeolian Loess in this area in the future engineering.