介绍了水布垭面板堆石坝填料的应力应变关系研究成果，着重分析了粗粒料的剪胀性，给出了水布垭堆石坝填料不同本构模型的模型参数。

Abstract The study results on the stressstrain relationship of the Shuibuya Project's concretefaced rockfill dam filler are introduced.The shear expandability of the coarse grained material is analyzed emphatically,and the parameters of various constitutive models for Shuibuya Project's rockfill dam filler are given.