Application of feedback technology in green construction of underground engineering

Study on the application of feedback technology in green construction of underground engineering was based on the case of the third metro line of Qingdao subway first-stage project. Theoretical analysis was used to forecast the ground surface settlement impact by construction, and the construction warning theoretical value is provided. The processes of construction were monitored, get the actual geological parameters and surface subsidence variation, feedback geotechnical investigation, design and construction immediately, by way of construction corrective measures, follow-up measures and other measures, to make sure the surroundings in the state of safe controlling. The results showed rock and soil deformation was controlled effectively through informational feedback technique, the surroundings impact was decreased, green construction came true, and achieved good economic and social benefits, deserved to widely used.