基于信息量法的斜坡破坏概率预测与制图

Failure Probability Prognosis of Slopes Based onthe Lnformation Method and Mapping

以信息量法为基础，对重庆市中区斜坡空间不稳定性进行预测分区并计算机自动成图，视强度参数ｃ，值为随机变量，分别选取较不稳定区和不稳定区中具代表性的斜坡段进行滑动面位置的随机搜索及破坏概率预测，并给出它们的斜坡破坏概率值ＦＰ，迭加于信息量预测分区图上。最后以不同的色块及ＦＰ值综合表示斜坡的不稳定程度。

In the paper,based on the prognosis of space instabilities of slopes and their mapping inChongqing city by information method,the random searching for the location of sliding surfacesand their failure probability prediction are made by selecting typical seetions from the two kindsof instable slopes.At the same time,the failure probability values( FP_s ) for this two kinds ofslopes are gaven。 Here,the shearing strength coefficients c and tan are considered as the ran-dom variables.Finally,the FP values are combined with the colour map which is drawn auto-matically by computer to show the instability degrees of slopes in Chongqing city。