Secondary lining construction method for tunnel air flue

The invention is applicable to the technical field of tunnel construction and particularly relates to a secondary lining construction method for a tunnel air flue. The method comprises following steps: the air flue is divided into at least 9 bin sections and multiple post-pouring belts according to engineering design requirements, and each bin section is numbered; a construction sequence is divided according to the position of each bin section, 1), the bin section in the middle position of the air flue is selected as the bin section for first construction, 2), the symmetric bin sections on twosides of the bin section for first construction are selected as the bin sections for construction in the same sequence, the two bin sections which are constructed simultaneously are not adjacent to the bin section which is constructed in the last construction sequence, and the construction sequence of the paired construction bin sections is determined, and 3), the bin section with the construction sequence which cannot b