摘要
利用ANSYS有限元软件,基于强度折减原理,建立包含弹性及弹塑性两种本构的多岩层模型,对拉拉铜矿露天采场高边坡稳定性进行模拟分析,并给出边坡发生塑性破坏的过程。以塑性区从坡脚到坡顶贯通作为边坡破坏的标志,以《滑坡防治工程勘查规范》对边坡稳定安全系数划分的规定,判断在模拟得出的安全系数下边坡是否处于稳定状态。模拟分析表明,在不考虑节理裂隙和爆破振动等因素的影响下,拉拉铜矿原设计27°边坡角安全系数≥1.40,有足够的稳定性,当边坡角扩大到38°时,其安全系数仍可达到1.15,处于安全稳定状态。
Based on the strength reduction principle, the multi-strata slope model established by the finite element analysis software ANSYS contains two constitutive models which are elastic and elastic-plastic, to simulate and analyze the high slope stability of Lala open pit mine, and the plastic failure process is given. Using the plastic zone through from the toe to the top of slope as the sign of failure and estimating whether the slope still stabilization refer to the specification of geological investigation for landslide stabilization. The simulation analysis shows that： without considering the influence of blasting vibration and joint fissure factors, when the final slope angle is 27°, the safe coefficient is≥1. 40, stability is sufficient. When the slope extended to 38°, the safety coefficient still can reach to 1.15, stability is sufficient too.
出处
《有色金属（矿山部分）》
2015年第3期98-102,共5页
NONFERROUS METALS(Mining Section）
