Tunnel structure suitable for strong-expanding potential fault crushed zone

Abstract

The invention relates to a tunnel structure suitable for a strong-expanding potential fault crushed zone. The tunnel structure comprises a tunnel outer arched ring and a tunnel inner arched ring, thetunnel outer arched ring is made of rubber concrete, and the volume ratio of rubber to stone to sand to cement to water in the rubber concrete is 2:3:2:2.5:0.5. The tunnel outer ring is made of a rubber concrete material and has good impact-preventing and anti-deforming performance, and expansion pressure increased along with increasing of the volume of expanded soil can be reduced. The compact structure and the certain expansion rate are achieved, cracks generated due to change of the temperature of the concrete are effectively prevented, and the durability of a tunnel is improved. Larger deformation is achieved compared with ordinary concrete, thus the effect of the surrounding rock pressure can be effectively reduced, the safety coefficient of the tunnel is increased, and coordinate deformation of a rock soil body and the tunnel is achieved. Large elasticity is achieved, the large outer load can be resisted, and meanwhile damage of the expansion pressure to the tunnel structure canbe reduced. The tunnel structure is simple, reasonable in design, convenient to mount, high in environment adaptation, high in environment-friendly extent and economic and reasonable in manufacturingcost, and thus application and popularization of the tunnel structure are facilitated.

Description

technical field [0001] The invention relates to the technical field of tunnel structures, in particular to a tunnel structure suitable for fractured zones of strong expansion potential faults. Background technique [0002] Tunnel is an engineering building buried in the ground floor, and it is a form of human use of underground space. At present, due to the slow release of expansion stress in expansive soil tunnels, they are still damaged after repeated repairs in the tunnel operation stage. The crack performance is poor, the deformation is small, the rigidity is large, and it bears a large force under the action of rock and soil, and there are often various degrees of cracking, water seepage and other diseases, which seriously affect the safety of expressway operation. The shock resistance is poor, the service life is short, and the durability and safety need to be improved and improved. Contents of the invention [0003] The purpose of the present invention is to overco...

AI Technical Summary

Problems solved by technology

[0002] Tunnel is an engineering building buried in the ground floor, and it is a form of human use of underground space. At present, due to the slow release of expansion stress in expansive soil tunnels, they are still damaged after repeated repairs in the tunnel operation stage. Poor cracking performance, small deformation, high rigidity, under the action of rock and soil, it bears a large force, and often has different degrees of cracking, water seepage and other diseases, which seriously affect the safety of expressway operation

Poor shock resistance, short service life, durability and safety need to be improved and improved

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