Prefabricated air bag duct piece structure for renovating longitudinal non-uniform deformation of tunnel

A prefabricated air bag duct piece structure for renovating longitudinal non-uniform deformation of a tunnel comprises a lining duct piece and an air bag layer. The lining segments are laid and spliced along the interior of the tunnel to form an annular outer ring part; the number of the air bag layers is two or more, and the adjacent air bag layers are spliced and laid along the outer wall face of the annular outer ring part. According to the structure, according to the longitudinal deformation condition of actual tunnel engineering, the air bag layer is filled with the ball particles of different properties, a buoyancy layer or a gravity layer within a certain range can be formed on the outer wall of the tunnel, and therefore the tunnel structure is lifted or pressed, and the purpose of treating longitudinal uneven deformation of the tunnel is achieved. 一种整治隧道纵向不均匀变形的预制气囊管片结构，衬砌管片和气囊层；所述衬砌管片沿所述隧道内部铺设拼接并呈一环形外圈部；所述气囊层的数量为两个以上，所述相邻的气囊层之间相拼接并沿所述环形外圈部的外壁面铺设。本申请的结构，针对实际隧道工程纵向变形情况，通过向气囊层内填充不同性质的球颗粒，可在隧道外壁形成一定范围的浮力