To address the problems of low accuracy, poor reliability and high maintenance costs in the internal attitude measurement of hydraulic supports, a study on the virtual-reality synchronous mapping method for digital twin monitoring of hydraulic support attitude was carried out. Firstly, by analyzing the support structure, a parametric expression model for the internal attitude of the hydraulic support was established, and the key technologies for sensor data processing were investigated. Then, a motion simulation model of the hydraulic support was established, and the parametric expression model of the hydraulic support was incorporated into the bottom layer of the simulation system for preliminary application. Finally, based on laboratory conditions, test verification was carried out on the proposed virtual-reality synchronous mapping method for support attitude. The test results show that the errors of the internal attitude angles of the support measured by this method are all controlled within 2°, which can meet the actual monitoring requirements. The research results provide new ideas for the virtual-reality synchronous mapping of hydraulic supports and have certain significance for the intelligent construction of mines.

Hydraulic support  /  Sensor fusion  /  Digital twin  /  Point cloud  /  Virtual-reality mapping