In order to study the stability of initial support and surrounding rock of the bias neighborhood tun-nels under different construction sequences,finite element method was used for numerical simulation.Combined with the calculation results of initial support stress,surrounding rock deformation and plastic zone range,the cause and law of the surrounding rock deformation were obtained.It was shown that the construction sequence should be determined based on the stress state of the surrounding rock between tunnels,which provide a refer-ence basis for similar tunnel projects.
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