Abstract：It is the key issue to prevent ground subsidence，especially seabed subsidence during the construction of shallow-buried subsea tunnels. So it is necessary to analyze the ground subsidence caused by the construction of shallow-buried tunnels including subsea tunnels in order to find out its forming mechanisms，inducing factors and control measures. Based on two ground subsidence accidents caused by the construction of a certain shallow-buried tunnel in Shenzhen subway，the equilibrium arch theory of М·М·Протодьяконов is used，and the forming mechanisms of ground subsidence induced by shallow-buried tunneling are presented. Predominant factors，which cause the collapse of ground，are analyzed according to stratum geological conditions and construction methods. Moreover，control techniques of avoiding ground subsidence accident are also proposed，and are applied to the tunnel construction in Shenzhen subway subsequently. Good effects were achieved in guiding the construction of the subway tunnel and ground subsidence accidents were also avoided. Research indicates that if shallow-buried tunneling can be strictly kept to the principles and technical rules of shallow-buried tunneling method，ground subsidence can be avoided effectively. The research results can provide references to preventing ground subsidence induced by construction of shallow-buried urban subway tunnels，subsea tunnels and other similar tunnel engineering.
