Single-hole single-line shield tunnel for vehicles including same-level evacuation passage and its use method

Abstract

The present invention discloses a single-hole, single-lane shield tunnel including a same-level evacuation passage and a method of use, including two-way lanes of the same width; the center line of the two-way lane is located on one side of the center line of the shield tunnel; a same-level evacuation passage is provided near the side wall on the other side of the center line of the shield tunnel where the two-way lane does not exist; and a comprehensive pipe gallery is provided below the two-way lane and the same-level evacuation passage. When a fire occurs in the internal two-way lane, people who are 100 to 200 meters away from the evacuation stairs near the two ends of the shield tunnel are evacuated through the corresponding evacuation stairs; the remaining people are evacuated along the direction of traffic in the same-level evacuation passage; rescue personnel including firefighters and medical staff walk along the two-way lane to rescue and / or pass through the same-level evacuation passage to the fire point in front. The present invention can not only realize the same-level evacuation of the two-way lane, but also has little change from the upper and lower layer modes in the prior art, and still maintains the equal traffic function.

Description

Technical Field

[0001] The present invention relates to the technical field of shield tunnel construction, in particular to a single-hole single-line shield vehicle tunnel including a same-layer evacuation passage and a use method thereof. Background Art

[0002] like Figure 1 As shown in the figure, existing 11.36m diameter shield tunnels typically include an upper lane and a lower evacuation passage. For example, the Shanghai XX Road Tunnel, which opened to traffic at the end of 2005, is a highway tunnel with a design speed of 80km / h. It uses one 3.75m-wide and one 3.5m-wide standard lane. Part of its curb and safety belt are 0.5m wide, which is larger than the space required for two 3.5m-wide standard lanes, a 0.25m-wide safety belt, and a curb required on standard urban roads.

[0003] When the tunnel opened to traffic, it was the largest highway tunnel in China at the time. Its upper lanes and lower evacuation and maintenance areas, with the evacuation width and height required by existing design specifications to be a minimum of 1.2m wide and 2.1m high, were widely used in many urban tunnel projects. However, this model had the following drawbacks in actual application:

[0004] 1. The upper holes of stairs or slides are covered with plates, which makes it inconvenient for people to use;

[0005] 2. While the width and height of the evacuation passageway for personnel on the lower level of the shield tunnel were guaranteed, the staircases for both upper and lower levels were limited by space and had a width of 0.8m and a 60-degree inclination. This resulted in low evacuation capacity and efficiency, and also failed to meet the minimum width and height requirements of 0.25m and 0.18m for a single step.

[0006] 3. The upper hole has a clear height of only about 1.7m, making it easy to bump into people and the walking conditions are poor;

[0007] 4. The cost of the pedestrian crossing in the shield tunnel section is about 5 million yuan, which is higher;

[0008] 5. Underwater excavation of pedestrian crossing passages carries certain construction risks;

[0009] 6. There is ample pipeline space on both sides of the lane layer, but it is not fully utilized.

[0010] Therefore, how to achieve same-level evacuation, maintenance, and rescue in lanes through space optimization and solve the defects of existing technologies has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0011] In view of the above-mentioned defects of the prior art, the present invention provides a single-hole, single-lane shield tunnel including a same-level evacuation channel and a method of use. The purpose is to achieve same-level evacuation, maintenance and rescue of the lanes in the narrow and cramped space of an 11.36m diameter shield while maintaining the functions of two 3.5m wide and 4.5m high lanes without increasing the cross-sectional size of the shield, thereby ensuring the economy of the existing process.

[0012] To achieve the above-mentioned purpose, the present invention discloses a single-hole single-lane shield tunnel including a same-level evacuation passage, and includes two-way lanes of the same width.

[0013] The center line of the two-way carriageway is located on one side of the center line of the shield tunnel;

[0014] The shield tunnel does not have a center line of the two-way carriageway and is provided with an evacuation passage on the same floor near the side wall;

[0015] Below the two-way carriageway and the evacuation passage on the same floor is a comprehensive pipeline corridor.

[0016] Preferably, the distance between the center line of the two-way carriageway and the center line of the shield tunnel is less than half the width of the evacuation passage on the same floor.

[0017] Preferably, the evacuation passage on the same floor and the two-way carriageway are separated by a lightweight partition wall with a fire resistance limit of more than 3 hours.

[0018] Preferably, the distance between the building clearance in the two-way carriageway and the fireproof lining inside the shield tunnel segment is more than 79 mm.

[0019] Preferably, each single evacuation point of the same-floor evacuation passage toward the two-way carriageway is provided with a 0.9m wide customized non-standard double-opening fire door.

[0020] Preferably, the height of the evacuation passage on the same floor is above 3.5 meters and is symmetrical with the other side of the shield tunnel.

[0021] Preferably, the evacuation passage on the same floor is provided with a fireproof roller shutter towards the two-way carriageway;

[0022] Each of the fireproof rolling curtains is opened for use by fire-fighting, medical and rescue personnel, and is used for the entry and exit of stretchers and fire-fighting equipment.

[0023] The present invention also provides a method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage. When a fire occurs in the internal two-way carriageway, people who are 100 to 200 meters away from the evacuation stairs near the two ends of the shield tunnel are evacuated through the corresponding evacuation stairs; the remaining people are evacuated along the vehicle direction through the same-level evacuation passage.

[0024] Rescue personnel including firefighters and medical personnel walk along the two-way road to rescue and / or pass through the same-floor evacuation passage to the fire point ahead.

[0025] Preferably, positive pressure air supply is adopted in the evacuation channel on the same floor.

[0026] Beneficial effects of the present invention:

[0027] The present invention can not only realize the same-level evacuation of two-way carriageways, but also has little change from the upper and lower level modes in the existing technology, still maintaining the equal vehicle traffic function, but also optimizes the evacuation capacity and evacuation and rescue conditions. After the level connection, it also improves the convenience and accessibility of routine transportation management and inspection, and improves the low-carbon, resilience and social nature of the tunnel project.

[0028] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The cross-sectional structure diagram of an 11.36 m shield tunnel in the prior art is shown.

[0030] Figure 2 A structural schematic diagram showing a cross section of a shield tunnel in one embodiment of the present invention is shown.

[0031] Figure 3 A plan layout diagram showing one side of a shield tunnel provided with a same-level evacuation passage in one embodiment of the present invention is shown.

[0032] Figure 4 A schematic diagram showing the state of evacuation when a fire occurs in a shield tunnel according to one embodiment of the present invention is shown. DETAILED DESCRIPTION Example

[0033] like Figures 1 to 3 As shown, a single-hole single-lane shield tunnel including an evacuation passage at the same level includes two-way lanes of the same width.

[0034] The center line of the two-way carriageway is located on one side of the center line of the shield tunnel;

[0035] The shield tunnel does not have a center line of the two-way carriageway and is provided with an evacuation passage on the same floor near the side wall;

[0036] Below the two-way carriageway and the evacuation passage on the same floor is a comprehensive pipeline corridor.

[0037] The present invention offsets the two-way carriageway to one side of the shield tunnel and sets a same-level evacuation channel on the other side near the tube wall. It not only can realize the same-level evacuation of the two-way carriageway, but also has little change from the upper and lower level mode in the existing technology, and still maintains the equal vehicle traffic function.

[0038] If the present invention is applied in the reconstruction of an existing tunnel, it is only necessary to add double-line masonry partition walls, fire doors, and fire shutters to the shield tunnel and remove all shield section stairs, making construction more convenient.

[0039] The application of the present invention eliminates the pedestrian cross passage in the shield tunnel, does not violate the regulations, and can retain the pedestrian cross passage, while further optimizing the safe accessibility of rescue personnel.

[0040] The present invention is particularly suitable for a single-hole single-line shield vehicle tunnel with a shield diameter of 11.36m.

[0041] The application of this invention optimizes the evacuation capacity and evacuation and rescue conditions, and after the leveling connection, it also improves the convenience and accessibility of routine transportation management and inspection, and improves the low-carbon nature, resilience and social nature of the tunnel project.

[0042] For urban tunnels with a shield diameter of 11.36m, the same-layer mode of this invention only takes into account the optimal utilization of space. It is an innovative model that has little impact on the construction party, design party, construction party and operation and management party. It requires little workload for all parties and has high cost-effectiveness. It can be applied to the construction and renovation of various tunnels and has wide promotion potential.

[0043] Against the backdrop of existing shield construction precision optimized to 75mm axis deviation, the present invention, through space optimization, understanding of different specifications, and analysis of the actual travel width and height required by ergonomics, concludes that the actual required width of the human body swing for the same two streams of people is only 1.1m. A new fiber-reinforced calcium silicate board + rock wool + integral keel composite fire wall with a total thickness of 93mm is partially adopted, which reduces the thickness of the traditional fire wall while meeting the 3-hour fire resistance limit, thereby truly realizing lane same-level evacuation, maintenance and rescue in the narrow and cramped space of an 11.36m diameter shield without increasing the shield cross-sectional size.

[0044] In some embodiments, the distance between the center line of the two-way carriageway and the center line of the shield tunnel is less than half the width of the same-level evacuation passage.

[0045] In some embodiments, the evacuation passage on the same floor and the two-way carriageway are separated by a lightweight partition wall with a fire resistance limit of more than 3 hours.

[0046] In some embodiments, the distance between the building clearance in the two-way carriageway and the fireproof lining inside the shield tunnel segment is more than 79 mm.

[0047] In some embodiments, each single evacuation point of the same-floor evacuation passage toward the two-way carriageway is provided with a 0.9m wide customized non-standard double-opening fire door.

[0048] In some embodiments, the height of the evacuation passage on the same floor is above 3.5 meters and is symmetrical with the other side of the shield tunnel.

[0049] In some embodiments, the evacuation passage on the same floor is provided with a fireproof roller shutter toward the two-way road;

[0050] Each of the fireproof rolling curtains is opened for use by fire-fighting, medical and rescue personnel, and is used for the entry and exit of stretchers and fire-fighting equipment.

[0051] like Figure 4 As shown, the present invention also provides a method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage. When a fire occurs in the internal two-way carriageway, people who are 100 to 200 meters away from the evacuation stairs near the two ends of the shield tunnel are evacuated through the corresponding evacuation stairs; the remaining people are evacuated along the vehicle direction through the same-level evacuation passage.

[0052] Rescue personnel including firefighters and medical personnel walk along the two-way road to rescue and / or pass through the same-floor evacuation passage to the fire point ahead.

[0053] The above evacuation plan can avoid conflicts between rescue workers and evacuees.

[0054] In some embodiments, positive pressure air supply is used in the evacuation channel on the same floor.

[0055] The above evacuation plan can prevent smoke from entering the evacuation passage on the same floor.

[0056] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A method for using a single-hole, single-lane shield tunnel including a same-level evacuation passage, wherein the single-hole, single-lane shield tunnel includes two-way lanes of equal width; characterized in that: The center line of the two-way carriageway is located on one side of the center line of the shield tunnel; The shield tunnel does not have a center line of the two-way carriageway and is provided with an evacuation passage on the same floor near the side wall; Below the two-way road and the evacuation passage on the same floor is a comprehensive pipe gallery; The distance between the center line of the two-way carriageway and the center line of the shield tunnel is less than half the width of the evacuation passage on the same floor; The evacuation passage on the same floor is provided with a fireproof roller shutter towards the two-way road; Each of the fireproof rolling curtains is opened for use by firefighters, medical personnel and rescuers, and is used for the entry and exit of stretchers and firefighting equipment; The method of use is as follows: when a fire occurs in the internal two-way carriageway, people who are 100 to 200 meters away from the evacuation stairs near the two ends of the shield tunnel are evacuated through the corresponding evacuation stairs; the remaining people are evacuated along the evacuation direction of the vehicle through the evacuation passage on the same floor; Rescue personnel including firefighters and medical personnel walk along the two-way road to rescue and / or go through the same-floor evacuation passage to the fire point ahead; Positive pressure air supply is adopted in the evacuation passage on the same floor.

2. The method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage according to claim 1, characterized in that: The evacuation passage on the same floor and the two-way carriageway are separated by a lightweight partition wall with a fire resistance limit of more than 3 hours.

3. The method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage according to claim 1, characterized in that: The building clearance in the two-way carriageway is more than 79 mm away from the fireproof lining inside the shield tunnel segment.

4. The method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage according to claim 1, characterized in that: Each single evacuation point of the same-floor evacuation passage toward the two-way carriageway is equipped with a 0.9m wide customized non-standard double-opening fire door.

5. The method for using a single-hole, single-lane shield tunnel with a same-level evacuation passage according to claim 1, characterized in that: The height of the same-level evacuation passage is above 3.5 meters and is symmetrical to the other side of the shield tunnel.

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