基于VTK的地下矿开采沉陷预计研究与实现

Study on subsidence prediction of underground mine and its implementation based on VTK

为对地表沉陷进行方便准确的预计,以大型可视化工具包VTK为开发平台,对VTK过滤器进行扩展,将开采沉陷预计算法写入VTK过滤器,实现地下矿开采沉陷预计及三维可视化.首先设计vtk Conforming Delaunay2D类,实现相容Delaunay三角化,得到高质量的地表模型;再根据沉陷预计模型,设计开采沉陷预计过滤器vtk Subsidence Filter,实现沉陷计算;然后基于VTK实现属性提取和后处理,进而实现沉陷地表的动态更新;最后建立VTK流水管线,将结果三维可视化.该方法突破了以往VTK主要用于三维可视化的局限,通过扩展VTK过滤器,拓宽了其专业应用.研究成果可用于地下煤矿与金属矿开采沉陷预计、开采沉陷的土地资源管理与复垦以及自然崩落法放矿的矿岩接触面模拟.

In order to calculate surface subsidence accurately and easily,taking VTK as the development platform,the VTK filters were extended and the mining subsidence prediction system was developed. Specifically： designed vtk Conforming Delaunay2 D class to achieve compatibility Delaunay triangulation to obtain a high quality surface model; according to subsidence model designed mining subsidence filter-vtk Subsidence Filter,achieved subsidence calculation; achieved attribute extraction and post-processing,so as to realize the dynamic update of surface subsidence; established VTK visualization pipeline,and took the results visualization. This method breaks through the limitations that previous VTK was mainly used for three-dimensional visualization,and broadens VTK professional applications by extending VTK filters. The research results can be used in underground coal and metal mining subsidence caculation,subsidence land resource management and land reclamation,and ore-rock contact-surface simulation of block caving.