Study on stability of high embankment slope based on black hole algorithm

摘要

The fill is one important engineering measure to construct civil engineering, such as highway, airport, etc. However, the slope instability of embankment is very complex, which may develop locally, near the facing, within the embankment, or through the foundation soil as local, surficial, general, or deep-seated failure. To analyze the stability of one high embankment slope for one airport in the plateau loess area, whose height is about 73 m, one new method based on Spencer method and new black hole algorithm has been proposed. Using this new method, the stability of the high embankment slope has been analyzed. And the computing effect and computing efficiency of the new method have been compared with some other methods proposed in previous studies. The results show that, for its small slope angle, which is about 20 degrees, the stability of this slope can be guaranteed, and the computing effect and computing efficiency of the new method are all very good. Moreover, the effect of main engineering measures on the stability of high embankment slope has been investigated comprehensively. The results show that, to improve the slope stability, it is a very effective method to compact the filling soil, and enlargement of the slope angle can reduce the slope stability very seriously.