Suspension bridge type tunnel structure spanning oversize karst cave

The utility model discloses a suspension bridge type tunnel structure crossing a super-huge karst cave. The suspension bridge type tunnel structure comprises a tunnel arch structure, a tunnel carriageway system, a main cable (4) and slings (5). The tunnel traffic lane system is composed of a main beam (6) and a pavement layer (7). The tunnel arch structure comprises a lining structure (8), a waterproof layer (9) and an anti-rockfall buffer layer (10). According to the whole tunnel structure, a main cable (4) and a sling (5) are fixed in a karst cavity, the main cable (4) and the sling (5) are arranged in a bilateral symmetry mode, and anchoring areas (3) are arranged at the two ends of the main cable (4) and embedded in the karst cavity; the tops of the slings (5) are connected with the main cable (4) through clamping pieces, and the bottoms of the slings (5) are connected with the main beam (6) and arranged in concrete of tunnel lining structures on the two sides of the tunnel. The device is scientific and r