INFLUENCE OF SHAFT CONSTRUCTION IN METRO TUNNEL ON ADJACENT BUILDINGS AND REINFORCEMENT

Construction of shaft in metro tunnel will inevitably bring ground disturbance and cause settlement of adjacent buildings,then the safety and the normal use of buildings is affected.Based on the practice of a certain metro running tunnel,the deformation character,reason and movement law of the around buildings induced by shaft construction are analyzed in this paper.Thereafter,taking a dormitory building for example,the measures of full-section sealing in tunnel face,such as advanced deep-hole curtain grouting,bench excavation and timely supporting associated with backfill grouting,radius grouting and ground surface grouting,are proposed to reinforce and control the deformation of buildings.