含断层高陡岩石边坡稳定性的弹塑性分析

根据我国西部山区某露天矿工程实际，通过现场工程地质调查及室内外试验，在分析了该矿北部高陡边坡岩体分布特征、断层等具体地质条件之后，选择最具代表性的主剖面，建立弹塑性力学模型，采用Drucker-Prager屈服条件，利用有限单元法模拟在爆破动力和地下水作用下高陡岩石边坡开挖的动态过程，计算了边坡安全系数。最后，针对边坡在开采后期的整体稳定性提出了安全技术措施。

Elastoplastic analysis of stability of high-steep rock slope with fault

Based on a field research on the Open-pit Mine and a series of outcrop and lab experiments, the engineering geological conditions such as the lithotype distributing character of rock masses on the northern-side of the mine, and the developing state of faults and joints, are analyzed. Considering that the mine is a slope-type open-pit mine and in consideration of the feature of local crustal stress, a typical section is chosen; and an elastoplastic mechanical model is established; and Drucker-Prager criterion is adopted. According to elastoplastic mechanical model, the influential degree of blasting shock on stability of the high-steep rock slope in mountain area is imitated by using elastoplastic finite elements method, the displacement field and the safety factor of the slope with fault at later stage are computed. Finally, the whole stability of the slope in later period is explored and some useful countermeasures are put forward.