不稳定斜坡危险度的判别

为判别不稳定斜坡的危险度,在斜坡表面的变形迹象、斜坡本身的内部条件及外界的触发因素中,分出12项定性定量判别指标,它们各自有因子判别值Xj(i为判别指标的编号,1—12;j为因子判别值等级编号,1—6)。把各判别指标的因子判别值Xj叠加并予以综合后,便得叠加因子判别值Y=sum from 1 to N(Xj/N)(N为判别指标的数目,至少取6个),再查表13,定出不稳定斜坡危险度D。

JUDGMENT OF DANGER DEGREE OF INSTABILITY SLOPE

The danger degree judgment of instability slope is made with qualitative indexes. It may be classified danger,secondary danger and undanger.The deformed slope surface and the internal conditions and outside trigger factors causing instability of the slope may be used to decide the danger degree of the instability slope.12 qualitative and quantitative indexes for deciding the danger degree are: trailing edge deformation,leading edge deformation,displacement volume of slope body, groundwater in slope body,possible scale for sliding, slope rafe, shear strength of slope materials,original structure of slope,rainfall,earthquake intensity,depth of unloaded crack and human activity. They all have factor judgment values .X(?), where, i is the number of judgment indexes, 1-12;.j is the degree number of factor judgment values, 1-6. Superposing all factor judgment values X(?),the super-posed factor judgment values are is the amonut of judgment indexes (more than6 indexes). And then the danger degree D of instability slope may be decided based on table 13.