Composite lining calculation model construction method and device and terminal equipment

The embodiment of the invention relates to the technical field of composite lining, and provides a composite lining calculation model construction method and device and terminal equipment. The composite lining calculation model construction method comprises the steps that tunnel basic parameters are obtained, and the surrounding rock pressure borne by a primary support in a composite lining is calculated according to the tunnel basic parameters; the thickness and rigidity of the primary support and the thickness and rigidity of the secondary lining are obtained, and the rigidity of an elastic chain rod between the primary support and the secondary lining is calculated according to the thickness and rigidity of the primary support and the thickness and rigidity of the secondary lining; obtaining an elastic resistance coefficient between the surrounding rock and the primary support; and based on the surrounding rock pressure, the elastic chain rod rigidity and the elastic resistance coefficient, a tunnel compos