某采空区地表沉降规律三维可视化处理与分析

采用莱卡全站仪和GPS相结合的方法，对采空区地表进行水平位移监测，并采用三角高程法监测空区地表垂直位移，从而获得空区地表水平位移值及下沉累积值等。在此基础上，借助SURFER软件对采空区地表变形数据进行三维处理，绘制出地表沉降三维表面图、地表沉降三维切片图、地表监测点布置张贴图。直观形象地反映了地表变化形态、变形范围、沉降大小、变形趋势等，并基于地表移动破坏形式、地表水平位移值及下沉累积值，给出具体分析结果及相关建议。

3D Visualization Processing and Analysis of Surface Subsidence Rule of a Mined-out Area

The leica total station and GPS are jointly ussed for the surface horizontal displacement monitoring of mined-out area，and the triangle elevation method is adopted to make the vertical displacement monitoring，thus obtaining the horizontal displacement value and sinking cumulants of the cavity surface.On this basis，data processing can be realized with the aid of SURFER software to draw the three dimensional surface chart of ground surface settlement，three dimensional section map of the ground surface settlement，post diagram of the surface monitoring point.These drawings reflect the surface changing form，deformation range，settlement size and deformation trends visually.Based on the failure modes of surface movement，the surface horizontal displacement value and the accumulated value of settlement，the specific analysis results and the related recommendations are given.