铁矿排土场挡土坝稳定性数值分析

利用矢量化的某铁矿排土场边坡原地表地形图在AUTOCAD中形成原地表三维立体图.平面计算的模型为三维立体模型的剖面.在自重荷载的情况下考虑地下水的组合,用ANSYS有限元分析软件对32°边坡和挡土坝进行了简化为平面应变问题的应力和位移场的分析.排土场边坡位移都很大,这主要是因为排土场高度较大,变形较大是合理的;地表水和地下水的控制是提高排土场稳定性的极有效的措施.对挡土坝而言,主要关注坝踵区的应力状态和变形的大小与方向,同时根据材料的抗拉强度与实际拉应力的比值给出的可供参考的安全系数.在构筑了挡土坝的条件下32°坡角的排土场边坡是稳定的.在排土场边坡的坡脚修建挡土坝既有利于边坡的稳定性,又有利...

Numerical Analysis of Stability of Bulkhead Dam for Mining Junkyard in Iron Ore Stope

A 3-D stereogram is given showing the primary topography in AUTOCAD, utilizing the vectorized primary relief map of the slope of a mining junkyard in a certain iron ore stope. Of which the 2-D model for calculation is a profile map of the 3-D model. Considering gravitationally the groundwater distribution, the finite element analysis of ANSYS software is used to simplify the 32° slope and bulkhead dam into a planar stress problem to analyze stress and displacement field. It is reasonable that the displacement of the junkyard slopes is great because the height of the yard is so big as well as its deformation. To control both the upland water and groundwater is a very effective measure to take for improving the stability of the junkyard. However, what is more important to the bulkhead dam is the magnitude and orientation of the stress and deformation in the dam heel region. A referable safety factor is thus given in accordance to the ratio of the tensile strength of dam material to the actual tensile stress. It has been proved in calculation that the 32° slope is stable if building a bulkhead dam on the slope foot, and the dam will provide the stability to the slope and bigger capacity to the yard.