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通过研究非稳定渗流的渗透压力计算方法，提出了改进的计算方法，编制了土坡滑动稳定分析 Ｂ Ｓ Ｔ Ａ 计算程序．通过实际土坝上游滑坡事故实例分析，说明改进的方法能反映实际情况，可用于工程实际的土坡稳定校核设计和滑坡分析．
By studying the calculation method of seepage pressure of unsteady seepage flow, an improved calculation method is put forward and the calculation program of slope stability analysis B S T A is compiled. The actual example of the landslide accident in the upstream of earth dam shows that the improved method can reflect the actual situation and can be used in the engineering design of soil slope stability check and landslide analysis.