Dongqing Hydropower Station dam was filled with the sand shale material excavated from spillway, which is a highly demanding technology in the high dam filling with lots of filling zones.

• 摘要董箐水电站大坝首次在高坝填筑中利用溢洪道开挖砂泥岩料填筑，且填筑分区较多，技术要求高。