张峰水库堆石坝反滤料设计研究

结合张峰水库实际施工过程中条件的变化，对初步设计中确定的堆石坝反滤料设计方案，进行了进一步优化比较，提出了新的设计方案。而后，通过室内试验，对新方案的反滤料进行了渗透变形试验、心墙裂缝冲刷试验以及反滤效果试验。结果表明，级配调整后的反滤料自身反滤性能好，具有良好的保土排水性能以及促进粘土心墙裂缝愈合能力，能承受较大的水流冲刷。 为此，证明：优化设计方案合理，用料少、投资省。

Study on design of filter material for rock-fill dam of Zhangfeng Reservoir

Combined with the variation of the relevant conditions during the actual construction of Zhangfeng Reservoir,the design scheme of filter material for the construction of the rock-fill dam made in the preliminary design is further optimized and compared,and then a new scheme is put forward.Moreover,the seepage-deformation test,scouring test on crack of core-wall and test on filtering effect are made for the new scheme of the filter materials.The results show that the filter material is good in its self-filtering performance with better soil conservation and drainage performance and the capacity to promote crack healing of the clay core-wall after the gradation adjustment concerned,accordingly,can resist the scouring from a larger seepage flow.Therefore,it is demonstrated that the optimized design scheme is reasonable with the merits of less consumption of filter material and large investment saving concerned.