Construction method and enclosure structure for shield to obliquely penetrate through side wall of subway station

The invention relates to a construction method and enclosure structure for a shield to obliquely penetrate through a side wall of a subway station, which is characterized in that a closed plain underground diaphragm wall and a transverse side wall are respectively constructed on the outer surface and the inner surface of the side wall of the station forming an inclined angle with the tunneling direction of the shield and are connected with the side wall of the station in a closed manner; a closed enclosure structure is formed; the enclosure structure comprises a transverse plain wall and a transverse side wall which are vertical to the shield direction; station side wall holes of the subway station are manually broken; and the transverse plain wall of the plain underground diaphragm wall is broken through the shield, the station side wall is drilled, the transverse side wall is broken through the shield, and inclined penetrating of the subway station side wall is completed. The shield tunneling machine is pre