The utility model provides a high-intensity area
active fault crossing tunnel anti-shock structure, which relates to the technical field of tunnel and underground
engineering design and construction, and comprises a tunnel
peripheral surrounding rock interval type grouting shock insulation ring, a primary support structure and a secondary lining structure which are sequentially arranged from outside to inside, the joint of the shock
absorption layer and the secondary lining structure can adapt to the anti-seismic joint with
large deformation, and the reserved space is enlarged through internal clearance. The grouting shock insulation ring is used for filling and grouting gaps of surrounding rock on the periphery of the tunnel through advanced curtain grouting or radial grouting after excavation, the shock insulation effect is achieved, the grouting shock insulation ring has the shock insulation effect, the whole tunnel lining structure is enhanced, the shock absorption buffer layer is arranged on the back of the lining, and the service life of the tunnel lining structure is prolonged. A special waterproof structure capable of adapting to
large deformation is arranged in the anti-seismic joint of the secondary lining structure, a structure reinforcing space is reserved in an inner clearance, the influence of the earthquake action on the lining structure can be better consumed, it is guaranteed that a joint waterproof
system is intact, running and traveling are not affected, and good economic and
social benefits are achieved.