The primary conclusions can be drawn : the intercalation dimension estimate value and kolmogrov entropy of grading uniform degree sand - pile which present soc are larger than non - uniform sand - pile 得到初步结论：颗粒组成均匀的沙堆，吸引子关联维数大于非均匀沙堆；扰动较大时，吸引子关联维数也较大。
