Land Subsidence Caused by Urban Metro Tunnel Construction

Abstract

With the development of urban transportation, city buses are unable to accommodate daily ground transportation for the public in life, work and study; therefore, urban metro gains rapid development. However, metro tunnel construction would initiate land subsidence issues which bring significant potential safety hazards and economic losses. In order to reduce irrelevant economic losses, this paper discusses the land subsidence issues from three perspectives: analysis of land subsidence, land subsidence safety judgment and control and shallow tunnel excavation method in tunnel construction used to control land subsidence. The paper indicates that there are major geotechnical engineering issues encountered during urban metro tunnel excavation process. The individuals in charge of implementation should optimize tunnel construction regulations and ensure all works are implemented scientifically, regularly and orderly in order to reduce the impacts on land subsidence caused by tunnel construction.