Electric power paying-off construction simulation calculation method based on three-dimensional design model and terrain

The invention discloses an electric power paying-off construction simulation calculation method based on a three-dimensional design model and terrain, and belongs to the field of electric power construction, and the method comprises the following steps: 1, analyzing a three-dimensional design result, and carrying out local storage processing; 2, processing the analyzed three-dimensional design result data; 3, stretching setting and stretching planning are carried out, stretching tower sections are set after data analysis processing is carried out, a target tower section is selected, a traction tower and a tension tower are arranged, and data in the tower sections are obtained; 4, calculating data, judging whether the tension of the guide rope passes verification according to a calculation result, and simulating the sag state of the guide rope in a three-dimensional scene; and 5, outputting results including a stretching planning flow chart, a control gear tension calculation table, a tower section horizontal