Intensive composite evacuation passage structure of single-hole double-layer open-cut tunnel

Abstract

The utility model belongs to the field of tunnel especially, it is an intensive composite evacuation passageway structure of single hole double -deck open cut tunnel, including upper layer traffic layer, lower layer traffic layer, vehicle access and ground evacuation stair, lower layer traffic layer is located below upper layer traffic layer, and vehicle access is located in the front side of upper layer traffic layer and lower layer traffic layer, and ground evacuation stair is set up in the right side of vehicle access, the upper layer traffic layer and vehicle access mouth of vehicle access of upper layer traffic layer are set up on the middle wall of upper layer traffic layer and vehicle access, the lower layer traffic layer and vehicle access mouth of vehicle access of lower layer traffic layer are set up on the middle wall of lower layer traffic layer and vehicle access, and the vehicle in double -deck tunnel's upper layer traffic layer and lower layer traffic layer is realized in vehicle access vehicle access lane board through vehicle access in vehicle access, the utility model discloses the rational design, through the intensive overall design to personnel evacuation, vehicle evacuation and equipment room layout, formed a kind of composite evacuation passageway structure, improves evacuation efficiency and the utilization of urban space.

Description

Technical Field

[0001] This utility model relates to the field of tunnel technology, and in particular to an intensive composite evacuation channel structure for a single-bore double-layer open-cut tunnel. Background Technology

[0002] In the field of urban underground road engineering development and construction, cut-and-cover tunnel construction technology has formed a relatively mature system. To reduce the depth of the excavation pit and effectively control construction costs, urban cut-and-cover road tunnels are currently mostly single-layer, double-hole structures, where construction conditions permit. Based on national standards and industry specifications such as the *Code for Fire Protection Design of Buildings* (GB50016-2014) and the *Code for Design of Urban Underground Road Engineering* (CJJ221-2015), their evacuation passage technology has become quite sophisticated. Under this structural form, the driving spaces of the left and right tunnels are considered independent fire compartments, and their vehicular and pedestrian evacuation passages can be designed for mutual evacuation between the left and right tunnels, ensuring rapid evacuation of personnel and vehicles in emergencies. Simultaneously, tunnel equipment rooms and their evacuation entrances and exits are also separately set up according to functional requirements, effectively ensuring the tunnel's operational safety and equipment maintenance needs.

[0003] However, with the acceleration of urbanization and the increasing intensity of urban spatial development, cut-and-cover tunnels in some core urban areas face numerous challenges. On the one hand, these areas have high road grade requirements, but the planned right-of-way width is relatively narrow; on the other hand, due to their location in urban areas, the existing traffic flow is high, and the diversion of existing roads during tunnel construction needs to be matched with the existing traffic, resulting in a significant increase in land use requirements. If the tunnel continues to use the conventional single-layer double-hole structure, or if the land use right-of-way is insufficient and existing buildings and other facilities on both sides need to be demolished, or to solve the problem of diverting existing roads, the excavation method of the cut-and-cover tunnel needs to adopt cut-and-cover, partial cut-and-cover, or segmented construction methods. Considering that urban underground tunnels are mostly long or extra-long tunnels, in actual construction, long-distance cut-and-cover or segmented construction has many procedures, complex construction organization, significantly extended construction period, high risk, and difficulty in construction quality control. To address the above problems, adjusting and optimizing the layout of the tunnel structure is a more reasonable approach. Therefore, we propose an intensive composite evacuation channel structure for a single-hole double-layer cut-and-cover tunnel to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an intensive composite evacuation channel structure for a single-hole, double-layer open-cut tunnel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A compact composite evacuation passage structure for a single-bore, double-layer open-cut tunnel includes an upper vehicular level, a lower vehicular level, a vehicular passage, and an evacuation staircase leading to the surface. The lower vehicular level is located below the upper vehicular level, and the vehicular passage is located in front of both the upper and lower vehicular levels. The evacuation staircase leading to the surface is located on the right side of the vehicular passage. An upper vehicular passage entrance is located on the central wall of both the upper and lower vehicular levels, and a lower vehicular passage entrance is located on the central wall of both the lower and lower vehicular levels. Vehicles can communicate between the upper and lower vehicular levels of the double-layer tunnel via the vehicular passageway. An upper evacuation staircase vestibule and a lower evacuation staircase vestibule are located between the evacuation staircase and the vehicular passage, with the lower vestibule located below the upper vestibule. A ventilation shaft is located within the evacuation staircase leading to the surface.

[0007] Preferably, the bottom of the vehicle passageway is provided with an equipment room partition wall, and an equipment room is set on one side of the equipment room partition wall.

[0008] Preferably, the upper anteroom of the evacuation staircase is provided on the right side of the upper anteroom, which is connected to the ground-level evacuation staircase, and a pedestrian evacuation exit between the upper anteroom and the stairwell.

[0009] Preferably, the rear side of the upper-level anteroom of the evacuation staircase is provided with a pedestrian evacuation opening that connects to the upper-level vehicular level.

[0010] Preferably, the lower anteroom of the evacuation staircase is provided with a pedestrian evacuation exit on the right side, which is connected to the evacuation staircase leading to the ground.

[0011] Preferably, the rear side of the lower-level anteroom of the evacuation staircase is provided with a pedestrian evacuation opening connecting the lower-level vehicular level and the anteroom.

[0012] Preferably, the left side of the lower-level anteroom of the evacuation staircase is provided with a pedestrian evacuation exit connecting the lower-level equipment room and the anteroom, which is connected to the equipment room.

[0013] Preferably, a pedestrian evacuation exit is provided between the equipment room and the lower traffic level.

[0014] The beneficial effects of this utility model are:

[0015] 1. When an accident occurs in the upper or lower driving level of the tunnel, vehicles can be evacuated through the driving passage entrances of the upper and lower driving levels, thereby enabling the smooth flow of vehicles.

[0016] 2. Personnel located on the upper level of the tunnel can access the evacuation staircase to the ground through the pedestrian evacuation exit between the upper level of the tunnel and the anteroom, and the pedestrian evacuation exit between the upper anteroom and the stairwell, thereby achieving the purpose of evacuating to a safe ground.

[0017] 3. Personnel located on the lower driving level inside the tunnel can access the evacuation staircase to the ground through the pedestrian evacuation exit between the lower driving level and the anteroom, and the pedestrian evacuation exit between the lower anteroom and the stairwell, thereby achieving the purpose of evacuating to a safe ground.

[0018] 4. Personnel in the equipment room can also evacuate or perform maintenance through the pedestrian evacuation exits between the lower-level vestibule and stairwell, between the lower-level equipment room and vestibule, and between the lower-level equipment room and the lower-level train floor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of an intensive composite evacuation channel structure for a single-bore double-layer open-cut tunnel proposed in this utility model.

[0020] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0021] Figure 3 for Figure 2 Schematic diagram of a local structure in the middle;

[0022] Figure 4 for Figure 1 Schematic diagram of the BB section structure;

[0023] Figure 5 for Figure 4 Schematic diagram of a local structure in the middle;

[0024] Figure 6 for Figure 1 Schematic diagram of the DD section structure;

[0025] Figure 7 for Figure 1 Schematic diagram of the EE cross-section structure;

[0026] Figure 8 for Figure 1 A schematic diagram of the FF cross-section structure.

[0027] In the diagram: 1. Upper vehicular level; 2. Lower vehicular level; 3. Vehicle passageway; 4. Entrance to the upper vehicular level vehicle passageway; 5. Entrance to the lower vehicular level vehicle passageway; 6. Vehicle passageway slab; 7. Equipment room; 8. Partition wall of equipment room; 9-1. Upper evacuation staircase vestibule; 9-2. Lower evacuation staircase vestibule; 10-1. Pedestrian evacuation exit between the upper vehicular level and vestibule; 10-2. Pedestrian evacuation exit between the upper vestibule and stairwell; 11-1. Pedestrian evacuation exit between the lower vehicular level and vestibule; 11-2. Pedestrian evacuation exit between the lower vestibule and stairwell; 11-3. Pedestrian evacuation exit between the lower equipment room and vestibule; 11-4. Pedestrian evacuation exit between the lower equipment room and lower vehicular level; 12. Ground-level evacuation staircase; 13. Ventilation shaft. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0029] This application discloses an intensive composite evacuation channel structure for a single-bore, double-layer open-cut tunnel.

[0030] Reference Figure 1-8 A compact composite evacuation passage structure for a single-bore, double-layer open-cut tunnel includes an upper driving level 1, a lower driving level 2, a vehicle passage 3, and an evacuation staircase 12 leading to the surface. The lower driving level 2 is located below the upper driving level 1, and the vehicle passage 3 is located in front of the upper driving level 1 and the lower driving level 2. The evacuation staircase 12 leading to the surface is located on the right side of the vehicle passage 3. An upper driving level vehicle passage entrance 4 is provided on the central wall of the upper driving level 1 and the vehicle passage 3. An upper driving level vehicle passage entrance 4 is located on the lower driving level... A vehicle passageway 5 for the lower driving level is set on the central wall of the vehicle passageway 2 and the vehicle passageway 3. Vehicles can communicate with each other in the upper driving level 1 and the lower driving level 2 of the double-layer tunnel through the vehicle passageway 3 via the vehicle passageway slab 6. An upper anteroom 9-1 and a lower anteroom 9-2 for the evacuation staircase 12 and the vehicle passageway 3 are set between the evacuation staircase 12 and the vehicle passageway 3. The lower anteroom 9-2 is located below the upper anteroom 9-1. A ventilation shaft 13 is set in the evacuation staircase 12.

[0031] In this embodiment, an equipment room partition wall 8 is provided at the bottom of the vehicle passageway slab 6, and an equipment room 7 is provided on one side of the equipment room partition wall 8.

[0032] In this embodiment, a pedestrian evacuation exit 10-2 connecting the upper anteroom 9-1 of the evacuation staircase and the ground-level evacuation staircase 12 is provided on the right side of the upper anteroom 9-1. A pedestrian evacuation exit 10-1 connecting the upper vehicle level 1 and the anteroom is provided on the rear side of the upper anteroom 9-1. Personnel located on the upper vehicle level 1 in the tunnel can enter the ground-level evacuation staircase 12 through the pedestrian evacuation exit 10-1 and the pedestrian evacuation exit 10-2, thereby achieving the purpose of evacuating to a safe ground.

[0033] In this embodiment, a pedestrian evacuation exit 11-2 connecting the lower anteroom 9-2 of the evacuation staircase and the ground-level evacuation staircase 12 is provided on the right side of the lower anteroom 9-2. A pedestrian evacuation exit 11-1 connecting the lower vehicle level 2 and the anteroom is provided on the rear side of the lower anteroom 9-2. Personnel located on the lower vehicle level 2 in the tunnel can enter the ground-level evacuation staircase 12 through the pedestrian evacuation exit 11-1 and the pedestrian evacuation exit 11-1, thereby achieving the purpose of evacuating to a safe ground.

[0034] In this embodiment, a pedestrian evacuation exit 11-3 connecting the lower equipment room and the anteroom is provided on the left side of the lower evacuation staircase anteroom 9-2, which is connected to the equipment room 7. A pedestrian evacuation exit 11-4 connecting the lower equipment room and the lower vehicular level 2 is provided between the equipment room 7 and the lower vehicular level 2. At the same time, personnel in the equipment room 7 can also evacuate or carry out maintenance through the pedestrian evacuation exits 11-2, 11-3, and 11-4.

[0035] In this utility model, when an accident occurs in the upper driving level 1 or the lower driving level 2 of the tunnel, vehicles can evacuate through the upper driving level vehicle passage 4 and the lower driving level vehicle passage 5, thereby enabling the smooth flow of vehicles. Personnel located in the upper driving level 1 of the tunnel can enter the ground evacuation staircase 12 through the upper driving level and anteroom pedestrian evacuation opening 10-1 and the upper anteroom and stairwell pedestrian evacuation opening 10-2, thereby achieving the purpose of evacuating to a safe ground.

[0036] Personnel located on the lower traffic level 2 inside the tunnel can enter the evacuation staircase 12 to the ground through the pedestrian evacuation exit 11-1 between the lower traffic level and the anteroom and the lower anteroom and the stairwell, thereby achieving the purpose of evacuation to the safe ground. At the same time, personnel in the equipment room 7 can also be evacuated or carried out for maintenance through the pedestrian evacuation exit 11-2 between the lower anteroom and the stairwell, the pedestrian evacuation exit 11-3 between the lower equipment room and the anteroom, and the pedestrian evacuation exit 11-4 between the lower equipment room and the lower traffic level.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A compact composite evacuation passage structure for a single-bore, double-layer open-cut tunnel, characterized in that, It includes an upper driving level (1), a lower driving level (2), a vehicle passage (3), and a ground-level evacuation staircase (12). The lower driving level (2) is located below the upper driving level (1), and the vehicle passage (3) is located in front of the upper driving level (1) and the lower driving level (2). The ground-level evacuation staircase (12) is located on the right side of the vehicle passage (3). The upper driving level (1) and the driving passage (3) are provided with the upper driving level driving passage entrance (4) on the middle wall, and the lower driving level driving passage entrance (5) is provided on the middle wall of the lower driving level (2) and the driving passage (3). The driving passage (3) is connected to the upper driving level (1) and the lower driving level (2) of the double-layer tunnel through the driving passage lane plate (6). The ground-level evacuation staircase (12) and the vehicle passage (3) are provided with an upper anteroom (9-1) and a lower anteroom (9-2) of the evacuation staircase, and the lower anteroom (9-2) of the evacuation staircase is located below the upper anteroom (9-1) of the evacuation staircase. A ventilation shaft (13) is provided inside the ground-level evacuation staircase (12).

2. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 1, characterized in that, The bottom of the vehicle passageway slab (6) is provided with an equipment room partition wall (8), and an equipment room (7) is provided on one side of the equipment room partition wall (8).

3. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 1, characterized in that, The upper anteroom (9-1) of the evacuation staircase is provided with an upper anteroom and stairwell pedestrian evacuation opening (10-2) connected to the ground-level evacuation staircase (12).

4. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 3, characterized in that, The upper anteroom (9-1) of the evacuation staircase is provided with a pedestrian evacuation opening (10-1) that connects to the upper vehicular level (1).

5. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 1, characterized in that, The lower anteroom (9-2) of the evacuation staircase is provided with a pedestrian evacuation exit (11-2) on the right side, which is connected to the ground-level evacuation staircase (12).

6. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 5, characterized in that, The rear side of the lower evacuation staircase anteroom (9-2) is provided with a pedestrian evacuation opening (11-1) that connects to the lower vehicular level (2).

7. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 1, characterized in that, The lower floor anteroom (9-2) of the evacuation staircase is provided with a pedestrian evacuation opening (11-3) on the left side, which is connected to the equipment room (7).

8. The intensive composite evacuation passage structure of a single-bore double-layer open-cut tunnel according to claim 2, characterized in that, The equipment room (7) and the lower train level (2) are provided with a pedestrian evacuation exit (11-4).

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