管线测量中高程的快速获取与应用

Rapid Acquisition and Application of Elevation in Pipeline Survey

在城市管线测量中,需要布设高程测量控制网,高程数据需要依据四等水准测量来获取。针对控制点相隔较远的情况,利用精化区域似大地水准面的方法来获取控制点的高程值是一种新的方法。论文结合兰州市管线普查实例,研究了利用精化似大地水准面的方法在城市管线测量中的应用,并用多项指标验证了方法的可行性与成果的精度,通过成果精度的比较分析,发现使用移去-恢复法并采用多个高程点参与拟合,可以快速准确地获取高程数据。

We need to set the vertical survey control network in urban pipeline measurement. The level data of elevation control network needs to be obtained based on four leveling. According to the situation that the control points are apart from each other, it is a new method acquiring the elevation value of the control points in a high accuracy local geoid. The author studies on application of acquiring the elevation value method in a high accuracy local genial on urban pipeline survey and verifying feasibility of the method and the accuracy of the results with a number of indicators, through the analysis of the result＇s accuracy, it is concluded that using the removal-recovery method and participate fitting with multiple elevation points can obtain elevation data quickly and accurately.