A new cut-fill method is adopted in the design of access road of Miaojiaba hydropower project by directly backfilling on the subgrade alluvium,and has probed a set of effective design method.

• 苗家坝水电站对外公路在淤积层路段设计中采用了坡脚换填抗剪、在淤积层上直接回填路基的新方法,摸索出一套有效的设计方法。