Research And Application Of Three-dimensional Construction Control Network In Pumped-storage Power Station

The pumped storage power station is the hydroelectric power station which uses the electric energy during the low load to drain the water from the reservoir,and then discharge it to the lower reservoir for power generation.With the rapid development of China's economy and the gradual transformation of energy demand,the pumped storage power station with storage capacity and regulation has attracted the rapid construction period,and the pumped storage power station has increased gradually during the construction stage.Pumped storage power station is characterized by its small area,high elevation difference,steep terrain and difficult traffic.Therefore,in the realization of the construction control network of pumped storage power station,using the traditional twodimensional plane network plus leveling height of the operation method,there exist the defects of corner netease,elevation accuracy is difficult to guarantee,the difficulty of the external operation and so on a series of problems.Using three-dimensional construction control network technology,GNSS baseline Edge,trigonometric elevation data,and the existing horizontal angle observation data,leveling elevation observation data,distance observation data to the overall adjustment,can effectively reduce the external work intensity,improve work efficiency,improve the reliability of the results.Using three-dimensional construction control network technology,the field practice was carried out in Hebei Fengning,and the final effect was good,which met the technical requirements of construction control network.