Civil air defense basement closed wall bushing structure and installation and construction method thereof

The invention relates to the technical field of wall bushing construction, and provides a civil air defense basement closed wall bushing structure aiming at the problem that a traditional pipeline and a bushing are difficult to seal, the civil air defense basement closed wall bushing structure comprises a bushing embedded in a wall body, a positioning pipe and a sealing pipe are coaxially matched in the bushing, and the positioning pipe and the sealing pipe are located at the two ends of the bushing correspondingly; a sealing ring is coaxially arranged at the end, facing the sealing pipe, of the positioning pipe, the sealing ring is coaxially matched in the sleeve, and the sealing ring and the sealing pipe are both used for being matched and connected with a pipeline in a sleeving mode; the sealing ring is further provided with a grouting assembly. The sealing device has the effect that sealing of the gap between the sleeve and the pipeline is simpler and more convenient. 本申请涉及穿墙套管施工的技术领域，针对传统的]管道与套管密封困难的问题，提