FLAC3D模型塑性区三维可视化在采空区围岩裂隙演变中的应用

摘要

For the problem that the range and distribution of plastic zone expressed by FLAC3D slicing is usually not intuitive or comprehensive enough,a new method is proposed.This method traverses the model unit,distinguishes the scope of plastic zone,un-plastic and goaf zone automatically,groups units and then gets plastic figure.We verify the validity and feasibility through a specific example.The result shows that the new method can not only display plastic zone in a vivid way,but also avoid the limitation of using multi-plane to give out the plastic zone of goaf surrounding rock.%针对FLAC3D利用切片表达塑性区范围及分布表达不够直观全面的问题,提出一种新的方法,该方法利用FLAC3D内置fish语言遍历模型单元体,自动判别塑性区、非塑性区以及采空区范围,然后对单元体进行分组,最终实现获得目标塑性图的目的.通过具体实例检验方法的有效性和可行性,结果表明:新方法可以较形象的给出了采空区围岩塑性区分布,同时避免了通过多个切片不能全面的表达塑性区分布的弊端.