基于非饱和渗流的干灰场边坡稳定分析

Slope Stability Analysis for Dry Ash Pond Based on Unsaturated Seepage

干灰场运行条件和水灰场有很大差别,规范规定的灰场边坡计算方法和计算工况是根据水灰场运行条件规定的,对干灰场不合适。通过干灰场运行条件分析,推荐了合理的干灰场边坡稳定计算算法,并基于非饱和渗流理论,分析了粉煤灰的水土特征曲线、渗透系数—孔隙水压力曲线、降雨入渗条件,得出了干灰场边坡稳定计算的主要结论。

The operation condition of dry ash pond has significantly different from that of wet ash pond.The calculation method about slope stability stipulated by code is based on wet ash pond, and that is not appropriate to dry ash pond. In this paper, operation condition of the dry ash pond is analyzed, and the reasonable slope stability calculation method is suggested.Based on unsaturated seepage theory, the characteristic curve, the permeability coefficient to pore water pressure curve and rainfall infiltration character of ash is simulated and the calculation conclusion is acquired.