The results showed the grit with weak expanded clay was of easy compaction, higher strength and low compressibility, and was suitable for filling material above saturation line.

• 结果表明，黏土质砂砾岩易压实，具有较高的强度和较低的压缩性，作为坝体填料是可行的，考虑到其干湿交替强度大幅度衰减的特性，应填筑于浸润线以上部分，并对坝坡坡面进行保护。