堰塞坝坝体材料渗流特性研究现状及展望

目前，国内外对地震堰塞坝体稳定性的研究较多，但多数为个例研究。在影响坝体稳定性的众因素中，堰塞坝体的材料组成及其渗透特性对坝体破坏模式有重要的决定作用。本文在前人研究的基础上，从渗流的基本规律、数值模拟、室内试验3个方面总结了针对堰塞坝坝体材料渗流的机理和研究方法。重点分析总结了堰塞坝坝体材料渗透性的研究进展，指出几何条件和水力条件共同决定土体发生渗透变形和渗透稳定性。最后分析了目前针对坝体材料渗透研究存在的问题，提出未来可能的研究方向。

RESEARCH STATUS AND PROSPECT OF THE SEEPAGE OF LANDSLIDE DAM MATERIAL

At present, the study of landslide dam body stability is more at home and abroad. But most of the studies are individual cases. In all the factors which influence the stability of the landslide dam, the landslide dam material composition and its permeability characteristics of dam failure mode is important. On the base of previous investigations, from the basic rule of seepage flow, numerical simulation, laboratory test three aspects are summarized for landslide dam material seepage mechanism and research methods. The focus is on the research progress of landslide dam material permeability. It is points out that the geometric conditions and hydraulic conditions that determine the soil seepage deformation and seepage stability. Then the paper summarizes the problems existing in current studies on the landslide dam material penetration. Finally, possible research direction in the future are pointed out.