Construction method of rotary drilling rig 1. Site preparation, surveying and setting out: before construction, the site shall be leveled, debris removed, the location of the drilling rig shall be leveled and compacted, and the site shall be prepared. At the same time, unified arrangements shall be made for construction water, mud pit location, power supply, gravel yard, mixer location, reinforcement processing site, and construction access roads. Surveying and setting out, use theodolite (or full