用冲填法难筑灰坝是目前处理粉煤灰的重要返径。跟着电厂容量增加,粉煤灰坝高度日益加大,对于较高的粉煤灰坝,为减少造价,一般先建较低的一期坝,形成灰库,当粉煤灰堆满后,再在灰面上修建多级子坝,以便逐级加高粉煤灰坝。水力冲填的粉煤灰是一种轻质、多孔、极为松散的材料,对动荷载反应灵敏,因此,灰坝的抗震稳定性是设计灰坝中的 The use of flushing and filling methods to build ash dams is an important way to deal with fly ash. As the capacity of power plants increases, the height of fly ash dams is increasing. For higher fly ash dams, in order to reduce the cost, generally lower first-stage dams are built to form ash banks. When the fly ash is full, then Multi-grade dams were built on the grey surface to increase the fly ash dam step by step. Hydraulically filled fly ash is a lightweight, porous, extremely loose material that reacts sensitively to dynamic loads. Therefore, the seismic stability of the ash dam is designed in the ash dam.