Power transmission line construction safety monitoring method and system based on three-dimensional visual model

The invention provides a power transmission line construction safety monitoring method and system based on a three-dimensional visual model. The method comprises the following steps: obtaining a line tower GIM model and three-dimensional measurement data of a power transmission line in a power transmission line construction project; performing multi-source data fusion and modeling on all the three-dimensional measurement data of the plurality of construction measurement parties by adopting a data fusion algorithm to obtain an on-site three-dimensional model; carrying out model fusion on the line tower GIM model and the field three-dimensional model to obtain a three-dimensional visual model; importing project construction plan data of the power transmission line construction project into the three-dimensional visual model; construction analogue simulation of the power transmission line construction project is completed through the three-dimensional visual model, the construction analogue simulation process is