数字摄影测量采集岩体结构面信息的控制测量方法

摘要

以吉林省长春市净月潭附近的废弃采石场为研究对象,开展了基于数字摄影测量的边坡结构面信息采集的控制测量研究.控制测量分级布设:首级平面控制采用一级导线测量,高程控制采用全站仪对向三角高程法和全站仪垂距测量法,通过对比两种方法的观测结果,发现在一些地形起伏较大的地区,全站仪垂距测量法可以满足高程控制测量的精度,而且方便快捷,同时探讨了GPS--RTK控制测量在数字摄影测量中的应用;次级坡面控制采用空间极坐标测量法.通过控制测量,可以为边坡结构面信息的摄影测量获取提供准确、可靠的基准.%Taking the abandoned quarry near Jingyuetan in Changchun City,Jilin as the research object,the control measurement of slope structural plane information collection based on digital photogrammetry has been car-ried out.The classification layout method of control measurement is as shown in the following:the first level of plane control uses the first-order traverse survey; elevation control uses the total station to the triangle elevation method and the total station vertical distance measurement method.By comparing the results of the two methods,it is found that in some areas with large terrain ups and downs, the total station vertical distance measurement method can meet the accuracy of elevation control measurement,and it is convenient and quick.At the same time,the applica-tion of GPS--RTK control measurement in digital photogrammetry is discussed.Secondary slope control uses spatial polar coordinate measurement method.By controlling the measurement,it is possible to provide accurate and relia-ble benchmarks for photogrammetric acquisition of slope structural plane information.