Tunnel lining vault grouting-with-formwork device and construction method thereof

The invention discloses a tunnel lining vault grouting-with-formwork device and a construction method thereof. The grouting-with-formwork device comprises initial support, a waterproof plate, a secondary lining and a secondary lining formwork trolley. Transversely-arranged grouting pipes and exhaust pipes are longitudinally arranged on the inner side of a waterproof plate vault; the grouting pipesand the exhaust pipes are fixed to the inner side surface of the waterproof plate through welding pieces; and one ends of the grouting pipes and the exhaust pipes are provided with sealing heads usedfor sealing correspondingly. According to the tunnel lining vault grouting-with-formwork device and the construction method thereof, the grouting pipes and the exhaust pipes are fixedly mounted on the waterproof plate, after secondary lining concrete reaches final setting, grouting of the grouting pipes is finished before formwork dismantling of the second lining formwork trolley is conducted, grouting has no omission, th