基于网格梯度算子的开采沉陷全盆地主变形预计方法研究

Research on drawing subsidence maximum deformation isogram method based on grid gradient operator

地下开采引起地表建筑物损害程度、土地破坏等级等的判定依据是所处位置最大变形值,目前多是绘制沿主断面方向的变形值图,再对走向、倾斜主断面图叠加处理分析.以地表任意点下沉值为数据基础,利用矿区地表变形的特征,以网格梯度算子为算法,提出了沿主变形方向(非主断面方向)倾斜、曲率、水平移动、水平变形等参数最大变形值的计算方法,并以林南仓矿西一采区为例,绘制出主变形等值线图,在图上可直接判定建筑物损害程度和范围,对"三下"采煤设计工作具有重要的现实意义和应用价值.

The maximum deformation value is the basis for determining the extent of damage for surface buildings and land,caused by underground mining.At present,much of the research work is drawning the deformation value graph along a main section,and then analyzing the inclined main section graph and tendency of superposition.This paper based on an arbitrary ground subsidence point for the data base to grid a gradient operator as algorithm,and proposed a method for calculating the maximum deformation of incline,curvature and horizontal movement,and horizontal deformation along the main deformation direction.Taking the west mining Linnancang for an example,the main deformation isograms map was drawn,on which the extent of damage and range of buildings can be directly determined.It has great practical significance and application value for the working design of mining coal.