ANSYS在新疆某铁矿崩落法中的建模应用

新疆某铁矿矿体覆盖岩较厚,当采用无底柱崩落法进行放顶作业时,采场顶板崩落效果差,会导致巷道受力变形严重,或者崩落后地表塌陷不到位,造成滑坡、山崩等地质灾害。因此,通过岩石力学试验,获得建模所需弹性模量、泊松比等力学参数,借助ANSYS有限元分析软件,分别建立厚覆岩模型、巷道模型、矿体模型、并模拟初始地应力,为后期模型开挖确定放顶顺序、选择合理方案提供可靠的技术指导与参考。

APPLICATION OF ANSYS IN THE COLLAPSE METHOD OF AN IRON MINE IN XINJING

Xinjiang thicker, an iron ore body cover rock when bottomless pillar caving method is adopted to improve the operation, the effect of stope roof caving is poor, can lead to stress deformation of roadway is serious, or fall after surface subsidence does not reach the designated position, lead to geological disasters such as landslide, landslide. Based on rock mechanics test, therefore, for modeling the required mechanical parameters such as elastic modulus, poisson"s ratio, with the aid of finite element analysis software ANSYS, respectively set up thick overburden rock model, the model of roadway, orebody model, and simulation of initial ground stress, determine caving for late model of excavation sequence, choose the reasonable scheme to provide reliable technical guidance and reference.