Highway maintenance method based on unmanned aerial vehicle technology

The invention discloses a highway maintenance method based on an unmanned aerial vehicle technology. The method belongs to the field of road maintenance methods. According to the expressway maintenance method based on the unmanned aerial vehicle technology, after the maintenance unmanned aerial vehicle observes expressway pavement defects, the throwing balls carried in the throwing boxes are thrown out. After the ball falls to the ground, the impact generated by falling to the ground causes the internal airflow to flow to break through the outer ball shell, and the outer ball shell is fixed on the expressway surface to form a warning device. Therefore, a driver can be reminded to drive to the vicinity of the pavement defect of the expressway, speed reduction is carried out in time, and the driving concentration degree is improved; meanwhile, the drop point of the throwing ball is controlled by using the length change of the protective fiber, so that more information is provided for drivers and maintenance per