Open-cut method tunnel structure

Abstract

The invention discloses an open-cut tunnel structure. The main body of the tunnel structure includes at least two tunnel holes, a plurality of fire doors are arranged on the partition wall between the two tunnel holes, and a climbing ladder is correspondingly arranged at each of the fire doors. , on the roof of the main structure of the tunnel corresponding to the top of each ladder, there are escape holes leading to the green belt on the ground, and the openings of each escape hole are provided with a manhole cover door that opens from the inside of the tunnel to the outside . The invention provides more options for tunnel escape and evacuation, greatly shortens the escape time, increases the evacuation capacity of the tunnel escape system, and ensures the effect of rapid evacuation.

Description

technical field [0001] The invention relates to the field of municipal engineering, in particular to an open-cut tunnel structure. Background technique [0002] With the development of urban construction, long-distance road tunnels constructed by open and cut methods have emerged in a "blowout" style in large and medium-sized cities. In the construction of long-distance underground roads, rapid escape is the focus of research on tunnel rescue and evacuation. [0003] At present, the evacuation of people under tunnel fire conditions can be divided into longitudinal and horizontal evacuation. The traditional tunnel structure considers setting a certain number of fire doors in the middle partition wall. When an accident occurs, escape personnel can escape from one lane hole to another lane hole, or escape longitudinally in the pipe corridor hole. When only two holes are set in the tunnel, escape personnel can only evacuate to the other side through the fire door. [0004] Th...

AI Technical Summary

Problems solved by technology

[0005] 1. For the three-hole tunnel, if an accident occurs in the lane hole on one side, the escape personnel must walk 50-150m to reach the escape door of the lane hole on the other side through the fire door and enter the tunnel hole, and the escape speed is slow

[0006] 2. For the three-hole tunnel, if the escape personnel choose to escape in the pipe corridor, they need to go to the tunnel entrance, the evacuation distance is larger, and the effect is worse

[0007] 3. If the escape personnel enter the hole of the side lane to evacuate, it will cause the accumulation of people in the hole of the side lane

In the case of traffic flow and people flow, it will cause traffic accident hazards

[0008] 4. Escapers continue to enter the side lane holes to escape without substantially escape from danger. The long evacuation time will increase the fear of escapers, which should lead to secondary disasters

[0009] 5. For two-hole tunnels, if an accident occurs in two lane holes at the same time, it will be more difficult to escape and evacuate

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