陕南非煤矿山废渣堆特性与边坡稳定性分析

Characteristics of slag dump and stability analysis of the slopes in non-coal mines of Southern Shaanxi

陕南非煤矿山废渣堆具有颗粒组成复杂、形态特征多样等特点,废渣堆颗粒组成直接决定了废渣堆天然休止角的大小,同一高度颗粒组成级配越好,边坡天然休止角越大,同时在堆积过程中也形成了上部细粒含量多、下部粗粒含量多的堆积分选特点,由于组成颗粒中黏粒含量的不同,呈现出不同的变形破坏特征,而废渣堆边坡角度对边坡的稳定性影响更为敏感。

The grain composition of the waste slag dump directly determines its natural angle,at the same attitude,the better-graded soil always with the bigger natural angle. So after sorting and accumulation,the content of fine grains is obviously high in the upper part while the content of coarse grains is very high in the lower part,the slope deformation and failure characteristics are different according to the content of fine grains. Slope stability is more sensitive to the angle of slag dump.