【摘要】 本文在充分考虑断层和地下水的影响,用FLAC(Fast Lagrangian Analysis of Continua)程序对首钢水厂铁矿采场Ⅳ-3边坡的多种方案进行稳定性评价,进而优化设计方案,提出了通过边坡典型位置处的位移、速度特征来判定边坡的稳定性的新方法。结果表明:该方法对判断边坡开挖变形情况,特别是对复杂条件下(含有断层、节理裂隙发育)边坡的稳定性进行对比分析有其自身的优势,在边坡稳定性的评价中具有良好的实用性。更多还原

【Abstract】 Under the consideration of faults and the influence of ground water, a few plans of slope excavation in an open pit are simulated by means of FLAC (Fast Lagrangian Analysis of Continua) code. Then the stability of each plan is evaluated and the optimization design scheme is selected out. In addition, a new method to judge the stability of slope in prososed regarding to characteristics of speed and displacement variation of monitoring sites concisely in this paper. The result indicates that the method is an effective method for evaludting excavation deformation of slope, especially for comparing stability of slope with the complicated condition (containing fautls and a large number of joint crack). It has good practical nature in the evaluation of slope stability.更多还原