Establishing method for plateau long-distance large engineering surveying control system

The invention discloses an establishing method for a plateau long-distance large engineering surveying control system. The establishing method comprises the steps that firstly, a large trunk canal control net is established to unify engineering surveying frameworks; then, a plurality of building control nets are established to meet the precision requirements of construction of corresponding buildings; finally, the trunk canal control net and the building control nets are effectively linked, and integral construction surveying control is formed. The method is oriented to plateau long-distance large engineering construction, a high-precision surveying and mapping guarantee is provided, the integral design and unified deployment of engineering are achieved, and the precise engineering surveying control system is established; design, construction, construction management and supervision maintenance along the line of engineering are carried out under the framework with unified precision and standards.