昔格达地层路堑边坡稳定性物元分析

结合西(西昌)攀(攀枝花)高速公路建设需要,通过对西攀高速公路沿线昔格达地层既有铁路、公路路堑边坡稳定性的调查研究,采用物元数理统计方法进行归纳分析,系统全面地总结出昔格达地层路堑边坡稳定性的影响因素,即坡高、坡度、坡体结构、含水率、植被覆盖率、岩石性质以及坡体内结构面产状与岩层产状,然后建立物元方程,得出各因素对边坡稳定性的影响程度,同时对昔格达地层路堑边坡按稳定性进行归类,共分稳定型、次稳定型、次不稳定型和不稳定型4种类型。通过系统论述昔格达地层边坡稳定性与边坡地形、地质条件的关系,得到了昔格达地层路堑边坡稳定性的理论判别依据和判别标志。

Matter Element Analysis of the Stability of Cut Slope in Xigeda Strata Area

In response to the need of the expressway construction from Xichang to Panzhihua,through site investigation on cut slope of the existing Xi-Pan region's railway and highway in Xigeda strata area,with matter element statistical analysis,the influence factors were systemically and comprehensively summarized.Including the factors of height,gradient,structure,water content,vegetation cover rate,rock properties,attitudes of the constructional surface and terrain.Then the matter element equation was established to identify the influence degree of the various factors the cut slope stability in Xigeda strata area.At the same time,the classification of the cut slope stability was studied by matter element analysis and mathmatical statistics methods.There are four types,i.e.steady,quasi-steady,quasi-unstable,unstable.The theortical judgement basis of the classification was put forward about the slope stability in Xigeda strata area based on systemically discussion of the relation between the slope stability and terrain of slope,geologic condition.