For the Shiya Line 500kV transmission line project, because the construction sit is located in the mountains, the basic design is the full range of high and low angle leg plug-in angle iron, so this paper used the theodolite and steel tape to test half with open half diagonal, then detect the slope distance of vertices inserted steel between any two base. The conventional detection method is limited by pulling foot mountainous terrain, it can not assure intervisibility and there exists inter-block ruler phenomenon, so it can not detect the slope distance of vertices inserted steel between any two base.%针对500kV石雅线输电线路工程，由于在山区施工，基础设计为全方位高低腿插入式角钢，利用经纬仪和钢卷尺检测半跟开半对角线后，还要检测任意两基础之间插钢顶点间斜距，常规拉尺检测方法受到山区地形、地势的困扰，基础间不能通视或存在挡尺现象，无法检测任意两基础间插钢顶点间斜距。
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