Ventilation and smoke exhaust system and method for fire disaster of deeply-buried multi-layer subway station

Abstract

The invention discloses a subway deep-buried multi-layer station fire ventilation and smoke exhaust system and method, and the system comprises a smoke exhaust subsystem, an air supply subsystem, an air exhaust and smoke exhaust subsystem, a station tunnel heat removal and smoke exhaust subsystem, and an interval tunnel air supply and smoke exhaust subsystem. The system is arranged on a station hall layer, at least one equipment layer and a platform layer of the subway deeply-buried station, the platform layer is the lowermost layer, a public area of the station hall layer is provided with two smoke exhaust subsystems and two air supply subsystems, the equipment layer is provided with at least one air exhaust and smoke exhaust subsystem and one air supply subsystem, and the air supply subsystems are arranged on the platform layer. The public area of the platform layer is provided with two smoke exhaust subsystems and two air supply subsystems, the number of the station tunnel heat and smoke exhaust subsystems is two, and the number of the interval tunnel air supply and smoke exhaust subsystems is four. The flow velocity of the staircase entrance of the building can meet the standard requirement when each floor of the deeply-buried station with the equipment floor is in fire, and the industrial problem that ventilation and smoke exhaust are difficult when each floor of the deeply-buried station is in fire is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation and smoke exhaust for station fires, and relates to a ventilation and smoke exhaust system and method for a subway deep-buried multi-story station fire. Background Art

[0002] With the full development of shallow underground space, subway stations are developing towards greater depths, and the construction of deep-buried subway stations is increasing.

[0003] Deeply buried stations have alleviated the problem of urban underground space shortage and improved construction conditions, which has positive significance to a certain extent. However, due to the large burial depth, it will lead to difficulty in air supply, which is not conducive to smoke emission in the event of a fire. The toxic and harmful smoke produced by incomplete combustion of the fire is the main cause of casualties.

[0004] According to the "Metro Design Code" GB50157-2013, when a fire occurs in a subway station, the following requirements must be met: When a fire occurs on the station platform, it should be ensured that there is airflow at the stairs and escalator entrances from the station hall to the platform that can effectively prevent smoke from spreading upwards, and the downward airflow speed should not be less than 1.5m / s.

[0005] However, conventional designs cannot meet the requirements for deep buried stations. The main reasons include:

[0006] (1) Deep-buried stations are buried deeper than ordinary stations, and the distance between entrances and exits is long. If conventional natural air supply is used, the natural air supply effect is poor due to the long air supply distance and large wind resistance, resulting in poor smoke exhaust effect, and it is impossible to meet the requirement that the downward flow velocity of the escalator opening from the station hall to the platform building is not less than 1.5m / s;

[0007] (2) Most deep-buried stations are multi-story stations. In addition to the conventional platform and concourse levels, there are also several equipment levels. This results in the escalator from the concourse to the platform being much longer than that of conventional stations, which is not conducive to air supply.

[0008] (3) After a fire occurs on the equipment floor, the equipment floor's own smoke exhaust system is generally linked to exhaust smoke, and the tunnel smoke exhaust system and tunnel heat exhaust system do not participate in auxiliary smoke exhaust, resulting in poor smoke exhaust effect, and the flow rate at the escalator entrance may be lower than 1.5m / s.

[0009] (4) The "Metro Design Code" and "Metro Design Fire Protection Standard" only require that the flow velocity at the escalator entrance meet the requirement of 1.5 m / s in the event of a platform fire. There are no clear requirements for other fire conditions. If a fire occurs on other floors and the flow velocity at the escalator entrance cannot be guaranteed to be 1.5 m / s, smoke may spread from the escalator entrance to the upper floors.

[0010] In order to ensure effective ventilation and smoke exhaust when a fire occurs on each floor of a deep-buried station, it is urgent to design a fire ventilation and smoke exhaust system and method for deep-buried subway stations to solve the current technical problems. Summary of the invention

[0011] The purpose of the present invention is to solve the above-mentioned technical problems and to provide a fire ventilation and smoke exhaust system and method for a deep-buried subway station. The system and method have a reasonable structure and are easy to operate, and solve the problem of poor air supply and smoke exhaust effects in the prior art. When a fire occurs on each floor of a buried station with an equipment layer, the flow rate at the escalator entrance can meet the regulatory requirements, thereby solving the industry problem of difficult ventilation and smoke exhaust in deep-buried stations.

[0012] In order to solve the above technical problems, the present invention provides a subway deep-buried multi-story station fire ventilation and smoke exhaust system, which includes: a smoke exhaust subsystem, an air supply subsystem, an exhaust and smoke exhaust subsystem, a station tunnel heat exhaust and smoke exhaust subsystem and an interval tunnel air supply and smoke exhaust subsystem, which is arranged in the station hall layer, at least one equipment layer and the platform layer of the subway deep-buried station, and the platform layer is the lowest layer, wherein the public area of ​​the station hall layer is configured with two smoke exhaust subsystems and two air supply subsystems, the equipment layer is configured with at least one exhaust and smoke exhaust subsystem and an air supply subsystem, the public area of ​​the platform layer is configured with two smoke exhaust subsystems and two air supply subsystems, the station tunnel heat exhaust and smoke exhaust subsystems are configured on both sides of the platform layer, and the interval tunnel air supply and smoke exhaust subsystems are configured at both ends of the platform layer, the number of the station tunnel heat exhaust and smoke exhaust subsystems is two, and the number of the interval tunnel air supply and smoke exhaust subsystems is four.

[0013] In some embodiments, the smoke exhaust subsystem configured in the public area of ​​the station hall layer includes: a public area fan, a smoke exhaust fan interlocking air valve, a muffler, a smoke exhaust air booth, a set of smoke exhaust ducts, several electric air valves and several smoke exhaust ports.

[0014] In some embodiments, the air supply subsystem configured in the public area of ​​the station hall layer includes: a public area fan, an air supply fan interlocking air valve, a silencer, an air supply air booth, a set of air supply ducts, several electric air valves and several air supply outlets.

[0015] In some embodiments, the smoke exhaust subsystem configured in the public area of ​​the platform layer includes: a public area fan, a smoke exhaust fan interlocking damper, a muffler, a smoke exhaust air booth, a set of smoke exhaust ducts, a plurality of electric dampers and a plurality of smoke exhaust ports.

[0016] In some embodiments, the air supply subsystem configured in the public area of ​​the platform layer includes: a public area fan, an air supply fan interlocking air valve, a silencer, an air supply air booth, a set of air supply ducts, several electric air valves and several air supply outlets.

[0017] In some embodiments, in the equipment layer, the exhaust and smoke exhaust subsystem includes: a public area fan, a smoke exhaust fan interlocking air valve, a silencer, a smoke exhaust air booth, a set of smoke exhaust ducts, a fire damper, a plurality of electric air valves and a plurality of smoke exhaust outlets; the supply air subsystem includes: a supply air fan, a supply air fan interlocking air valve, a silencer, a supply air booth, a set of supply air ducts, a plurality of electric air valves and a plurality of supply air outlets.

[0018] In some embodiments, the station tunnel heat and smoke exhaust subsystem includes: a heat and smoke exhaust fan, a heat and smoke exhaust fan interlocking air valve, a silencer, a heat and smoke exhaust air booth, a set of platform public area smoke exhaust ducts, a set of station track top heat and smoke exhaust ducts, two fire dampers, a number of electric air valves and a number of smoke exhaust outlets.

[0019] In some embodiments, the interval tunnel air supply and smoke exhaust subsystem includes: a tunnel air supply and smoke exhaust fan, an air supply and smoke exhaust fan interlocking air valve, a muffler, an air supply and smoke exhaust air booth, and an air supply and smoke exhaust outlet.

[0020] At the same time, the present invention also provides a fire ventilation and smoke exhaust method for a deep-buried multi-story subway station, which uses the above-mentioned fire ventilation and smoke exhaust system for a deep-buried multi-story subway station, including the following steps: turning on the air supply on the first underground floor of the deep-buried subway station, turning on the smoke exhaust and turning off the air supply on the fire floor, and turning off the smoke exhaust and air supply on other floors.

[0021] In some embodiments, the underground level one of the deep-buried subway station is the station hall level, the underground level N is the platform level, and N ≥ 3;

[0022] If a fire occurs in the public area on the platform level, the smoke exhaust subsystem at the first and second ends of the public area on the platform level, the tunnel heat exhaust and smoke exhaust subsystem at the first end of the station, and the tunnel heat exhaust and smoke exhaust subsystem at the second end of the station will be automatically activated for smoke exhaust. The air supply and smoke exhaust subsystem at the first end of the upward tunnel, the air supply and smoke exhaust subsystem at the second end of the upward tunnel, the air supply and smoke exhaust subsystem at the first end of the downward tunnel, and the air supply and smoke exhaust subsystem at the second end of the downward tunnel will be automatically activated for exhaust. The air supply subsystem at the first and second ends of the public area on the station hall level will be automatically activated for air supply. The exhaust and smoke exhaust subsystems and air supply subsystems on all equipment levels will be automatically closed, and all smoke exhaust subsystems on the station hall level and all air supply subsystems on the platform level will be closed.

[0023] In some embodiments, the underground level one of the deep-buried subway station is the station hall level, the underground level N is the platform level, and N ≥ 3;

[0024] If a fire breaks out in the equipment layer of the k-th floor, where 1 < k < N, then all the exhaust and smoke exhaust subsystems on the k-th floor are automatically interlocked for smoke exhaust, the air supply subsystems at the first end and the second end of the public area on the concourse floor are automatically interlocked to supply air, all the exhaust and smoke exhaust subsystems and air supply subsystems on the equipment layers of non-fire floors are automatically interlocked to close, the smoke exhaust and air supply subsystems in the platform public area are closed, the tunnel exhaust heat and smoke exhaust subsystem and the interval tunnel air supply and smoke exhaust subsystem are closed, the air supply subsystem on the equipment layer of the k-th floor is closed, and the smoke exhaust subsystem on the concourse floor is closed, where 1 < k < N, and the N-th underground floor is the platform floor.

[0025] In some embodiments, the first underground floor of a deep-buried subway station is the equipment layer, and the N-th underground floor is the platform floor, where N ≥ 3;

[0026] If a fire breaks out in the public area on the concourse floor, the smoke exhaust subsystems at the first end and the second end of the public area on the concourse are automatically interlocked to exhaust smoke, then the exhaust and smoke exhaust subsystems at the first end and the second end of the public area on the concourse floor are automatically interlocked to exhaust smoke, all the air supply subsystems on the equipment layer of the first underground floor are automatically interlocked to supply air, all the exhaust and smoke exhaust subsystems and air supply subsystems on all equipment layers are automatically interlocked to close, the exhaust and smoke exhaust subsystems and air supply subsystems on the equipment layers except the first underground floor are automatically interlocked to close, all the exhaust and smoke exhaust subsystems on the equipment layer of the first underground floor are closed, all the air supply subsystems on the concourse floor are closed, all the smoke exhaust and air supply subsystems on the platform floor are closed, and the tunnel exhaust heat and smoke exhaust subsystem and the interval tunnel air supply and smoke exhaust subsystem are closed.

[0027] Advantages of the present invention:

[0028] The fire ventilation and smoke exhaust system and method for a deep-buried subway station provided by the present invention solve the problem of poor air supply and smoke exhaust effects in the prior art. The smoke exhaust and air supply on each floor of the deep-buried station are interlocked, and the tunnel smoke exhaust system and the tunnel exhaust heat system are also interlocked to participate in auxiliary smoke exhaust, so that the flow rate at the escalator openings on each floor of the deep-buried station with an equipment layer can meet the specification requirements during a fire on each floor, and the industry problem of difficult ventilation and smoke exhaust during a fire on each floor of the deep-buried station is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Through the following detailed description in conjunction with the accompanying drawings, the above advantages of the present invention will become clearer and easier to understand. These drawings are only schematic and do not limit the present invention, where:

[0030] Figure 1 is a schematic diagram of the fire ventilation and smoke exhaust system for the deep-buried subway station described in the present invention Figure 1 ;

[0031] Figure 2 is a schematic diagram of the fire ventilation and smoke exhaust system for the deep-buried subway station described in the present invention Figure 2 ;

[0032] Figure 3 It is a flow chart of a method for ventilation and smoke exhaust in a subway deep buried station fire provided by an embodiment of the present invention;

[0033] Figure 4 is a flow chart of processing when a fire occurs in a public area on a platform level provided by an embodiment of the present invention;

[0034] Figure 5 This is a flowchart of processing when a fire occurs in the k-th equipment layer provided by an embodiment of the present invention;

[0035] Figure 6 This is a flowchart of processing when a fire occurs in a public area of ​​a station hall level provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments and drawings.

[0037] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0038] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0039] Figure 1-2 In the illustrated embodiment, the naming convention for component reference numerals is as follows: letter+number-n, where n is a positive integer.

[0040] Among them, the first letter A represents the public area fan; the first letter B represents the heat and smoke exhaust fan; the first letter C represents the tunnel air supply and smoke exhaust fan; the first letter D represents the smoke exhaust valve or the supply air valve (including the smoke exhaust fan interlocking air valve, the supply air fan interlocking air valve, the heat and smoke exhaust fan interlocking air valve, and the supply air and smoke exhaust fan interlocking air valve); the first letter E represents the smoke exhaust booth or the supply air booth (including the exhaust and smoke exhaust booth, the heat and smoke exhaust booth, and the tunnel air supply and smoke exhaust booth); the first letter F represents the muffler; the first letter G represents the smoke exhaust duct or the air supply duct; the first letter H represents the air valve.

[0041] Among them, the meanings of the numbers adjacent to the letters are as follows: 1-n in the mark belong to the section tunnel air supply and smoke exhaust subsystem, 2-n in the mark belong to the station tunnel heat exhaust and smoke exhaust subsystem, 3-n in the mark belong to the platform level smoke exhaust subsystem and air supply subsystem, 4-n in the mark belong to the station hall level smoke exhaust subsystem and air supply subsystem, 5-n in the mark belongs to the equipment level exhaust and smoke exhaust subsystem and air supply subsystem.

[0042] The fire ventilation and smoke exhaust system for the subway deep buried station described in this application is as follows: Figure 1-2 As shown, it includes a smoke exhaust subsystem, an air supply subsystem, an exhaust and smoke exhaust subsystem, a station tunnel heat exhaust and smoke exhaust subsystem and an interval tunnel air supply and smoke exhaust subsystem, which are arranged in the station hall layer, equipment layer and platform layer of the deep buried subway station.

[0043] In the present invention, the deep-buried subway station includes a station hall layer, at least one equipment layer and a platform layer, and the platform layer is the lowest layer.

[0044] Figure 1 The first underground floor is the station hall floor, the Nth underground floor is the platform floor, and the other floors are equipment floors.

[0045] Figure 2 The first underground floor is the equipment floor, the Nth underground floor is the platform floor, and the other floors are the equipment floor and the station hall floor.

[0046] The public area of ​​the station hall layer is configured with 2 smoke exhaust subsystems and 2 air supply subsystems, the equipment layer is configured with at least one exhaust and smoke exhaust subsystem and an air supply subsystem, the public area of ​​the platform layer is configured with 2 smoke exhaust subsystems and 2 air supply subsystems, the number of the station tunnel heat exhaust and smoke exhaust subsystems is 2, and the number of the interval tunnel air supply and smoke exhaust subsystems is 4.

[0047] In some embodiments, the smoke exhaust subsystem configured in the public area of ​​the station hall layer includes: a public area fan A4-2, a smoke exhaust fan interlocking air valve D4-2, a muffler F4-2, a smoke exhaust air booth E4-2, a set of smoke exhaust ducts G4-2, a plurality of electric air valves and a plurality of smoke exhaust ports. In the present invention, the exhaust air booth is equivalent to the air shaft.

[0048] In some embodiments, the air supply subsystem configured in the public area of ​​the station hall layer includes: a public area fan A4-1, an air supply fan interlocking air valve D4-1, a silencer F4-1, an air supply air booth E4-1, a set of air supply ducts G4-1, several electric air valves and several air supply outlets.

[0049] In some embodiments, the smoke exhaust subsystem configured in the public area of ​​the platform layer includes: a public area fan A3-2, a smoke exhaust fan interlocking air valve D3-2, a silencer F3-2, a smoke exhaust air booth E3-2, a set of smoke exhaust ducts G3-2, several electric air valves and several smoke exhaust ports.

[0050] In some embodiments, the air supply subsystem configured in the public area of ​​the platform layer includes: a public area fan A3-1, an air supply fan interlocking air valve D3-1, a silencer F3-1, an air supply air booth E3-1, a set of air supply ducts G3-1, several electric air valves and several air supply outlets.

[0051] In some embodiments, in the equipment layer, the exhaust and smoke exhaust subsystem includes: a public area fan A5-2, a smoke exhaust fan interlocking air valve D5-2, a silencer F5-2, a smoke exhaust air booth E5-2, a set of smoke exhaust ducts G5-2, several electric air valves and several smoke exhaust outlets; the supply air subsystem includes: an air supply fan A5-1, a supply air fan interlocking air valve D5-1, a silencer F5-1, a supply air booth E5-1, a set of air supply ducts G5-1, several electric air valves and several air supply outlets.

[0052] In some embodiments, the station tunnel heat and smoke exhaust subsystem includes: a heat and smoke exhaust fan B2-1, a heat and smoke exhaust fan interlocking air valve D2-1, a muffler F2-1, a heat and smoke exhaust air booth E2-1, a set of smoke exhaust ducts G2-1, a set of station track top heat and smoke exhaust ducts, a plurality of electric air valves and a plurality of smoke exhaust ports.

[0053] In some embodiments, the air supply and smoke exhaust subsystem of the interval tunnel includes an air supply and smoke exhaust subsystem at the first end of the upward tunnel, an air supply and smoke exhaust subsystem at the second end of the upward tunnel, an air supply and smoke exhaust subsystem at the first end of the downward tunnel, and an air supply and smoke exhaust subsystem at the second end of the downward tunnel. Each subsystem includes a tunnel air supply and smoke exhaust fan C1-2, an air supply and smoke exhaust fan interlocking air valve D1-2, a silencer F1-2, an air supply and smoke exhaust air booth E1-2 and an air supply and smoke exhaust port.

[0054] In some embodiments, the air supply and smoke exhaust subsystem at the first end of the upward tunnel is connected to the air supply and smoke exhaust subsystem at the first end of the downward tunnel, and the air supply and smoke exhaust subsystem at the second end of the upward tunnel is connected to the air supply and smoke exhaust subsystem at the second end of the downward tunnel, and a smoke exhaust valve D1-6 is set in the connected pipeline. In this way, when a tunnel fire occurs, the tunnel air supply and smoke exhaust fans C1-1 and C1-2 can be turned on at the same time to concentrate on exhausting smoke or supplying air to one tunnel (upward or downward tunnel), thereby improving the instantaneous smoke exhaust capacity. In addition, when a platform fire occurs, when one side of the platform door cannot be opened due to fire or other reasons, only one side of the platform door is opened, and then only the tunnel fan on one side can be turned on. In this way, smoke exhaust can be achieved for one side of the tunnel (upward or downward tunnel) by controlling the switch of the smoke exhaust valve D1-6 or D1-14.

[0055] In addition, the present invention also provides a method for ventilation and smoke exhaust in a subway deep buried station fire, the flow chart of which is as follows: Figure 3 As shown, it uses the above-mentioned subway deep-buried station fire ventilation and smoke exhaust system, including: turning on the air supply on the first underground floor of the subway deep-buried station (S1), turning on the smoke exhaust and turning off the air supply on the fire floor (S2), and turning off the smoke exhaust and air supply on other floors (S3).

[0056] Figure 4 This is a flowchart of processing when a fire occurs in a public area on the platform level provided by an embodiment of the present invention.

[0057] The underground level of a deep-buried subway station is the concourse level, and the Nth underground level is the platform level, where N≥3;

[0058] If a fire occurs in the public area of ​​the platform layer, the smoke exhaust subsystems at the first and second ends of the public area of ​​the platform layer, the tunnel heat exhaust and smoke exhaust subsystem at the first end of the station, and the tunnel heat exhaust and smoke exhaust subsystem at the second end of the station are automatically linked to start smoke exhaust (S10).

[0059] Specifically, turn on fans A3-2 and A3-4, open smoke exhaust valves D3-2 and D3-4, and exhaust smoke from the platform public area through smoke exhaust ducts G3-2 and G3-4; turn on fans B2-1 and B2-2, open smoke exhaust valves D2-1, D2-2, D2-3, D2-4, D2-5, and D2-6, and exhaust smoke from the platform public area through smoke exhaust ducts G2-1 and G2-2.

[0060] The air supply subsystem at the first end of the upward tunnel, the air supply and smoke exhaust subsystem at the second end of the upward tunnel, the air supply subsystem at the first end of the downward tunnel and the air supply and smoke exhaust subsystem at the second end of the downward tunnel are automatically linked to start exhaust, and the air supply subsystem at the first end and the second end of the public area of ​​the station hall layer are automatically linked to start air supply (S20).

[0061] Specifically, turn on the fans C1-1, C1-2, C1-3, C1-4, turn on the smoke exhaust valves D1-2, D1-4, D1-5, D1-7, D1-9, D1-11, D1-12, D1-13, turn on the air valves H1-1, H1-2, H1-3, H1-4, turn off the smoke exhaust valves D1-1, D1-3, D1-6, D1-8, D1-10, D1-14, and exhaust air through the tunnel; turn on the fans A4-1, A4-3, turn on the smoke exhaust valves D4-1, D4-3, and supply air to the concourse public area through the smoke exhaust ducts G4-1, G4-3.

[0062] Automatically and interlockingly close the exhaust and smoke exhaust subsystem and the air supply subsystem on all equipment floors, and close all smoke exhaust subsystems on the concourse floor and all air supply subsystems on the platform floor (S30).

[0063] Specifically, turn off the fans A5-1, A5-2, A5-3, A5-4, A4-2, A4-4, A3-1, A3-3, turn off the smoke exhaust valves D5-1, D5-2, D5-3, D5-4, D4-2, D4-4, D3-1, D3-3.

[0064] In some embodiments, the kth basement floor is the concourse floor (1 < k < N), the Nth basement floor is the platform floor, N ≥ 3, and the others are equipment floors.

[0065] When the fire detector detects a fire in the platform public area, the following methods are taken:

[0066] Automatically and interlockingly turn on the smoke exhaust subsystems at the first end and the second end of the platform public area for smoke exhaust. Specifically, turn on the fans A3-2, A3-4, turn on the smoke exhaust valves D3-2, D3-4, and exhaust smoke from the platform public area through the smoke exhaust ducts G3-2, G3-4.

[0067] Automatically and interlockingly turn on the first-end tunnel heat exhaust and smoke exhaust subsystem and the second-end tunnel heat exhaust and smoke exhaust subsystem of the station for smoke exhaust. Specifically, turn on the fans B2-1, B2-2, turn on the smoke exhaust valves D2-1, D2-2, D2-3, D2-4, D2-5, D2-6, and exhaust smoke from the platform public area through the smoke exhaust ducts G2-1, G2-2.

[0068] Automatically link and open the exhaust air of the first-end air supply and exhaust subsystem, the second-end air supply and exhaust subsystem of the up-tunnel, the first-end air supply and exhaust subsystem of the down-tunnel, and the second-end air supply and exhaust subsystem of the down-tunnel. Specifically, it includes turning on fans C1-1, C1-2, C1-3, C1-4, turning on smoke exhaust valves D1-2, D1-4, D1-5, D1-7, D1-9, D1-11, D1-12, D1-13, turning on air valves H1-1, H1-2, H1-3, H1-4, closing smoke exhaust valves D1-1, D1-3, D1-6, D1-8, D1-10, D1-14, and exhausting air through the tunnel.

[0069] Automatically link and open the air supply subsystem of the equipment layer on the first basement floor for air supply. Specifically, it includes turning on fans A5-1, A5-3, turning on smoke exhaust valves D5-1, D5-3, and supplying air to the equipment layer on the first basement floor through smoke exhaust ducts G5-1, G5-3.

[0070] Automatically link and close the exhaust air and smoke exhaust subsystem, the air supply subsystem on the concourse level, and the exhaust air and smoke exhaust subsystem, the air supply subsystem of the equipment layers except the first basement floor. Automatically link and close the air supply subsystem on the platform level and the exhaust air and smoke exhaust subsystem of the equipment layer on the first basement floor. Specifically, it includes closing fans A4-1, A4-2, A4-3, A4-4, A3-1, A3-3, A5-2, A5-4, and closing smoke exhaust valves D4-1, D4-2, D4-3, D4-4, D3-1, D3-3, D5-2, D5-4.

[0071] Figure 5 It is a flowchart for handling a fire in the equipment layer on the k-th floor provided by an embodiment of the present invention.

[0072] If a fire occurs in the equipment layer on the k-th floor, where 1 < k < N, and the N-th basement floor is the platform floor, N < k;

[0073] Then automatically link and open all the exhaust air and smoke exhaust subsystems on the k-th floor for smoke exhaust, automatically link and open the air supply subsystems at the first end and the second end of the public area on the concourse level for air supply (S100), automatically link and close all the exhaust air and smoke exhaust subsystems, the air supply subsystems of the non-fire equipment layers, close the smoke exhaust and air supply subsystems in the platform public area, close the heat exhaust and smoke exhaust subsystem of the station tunnel and the air supply and exhaust subsystem of the interval tunnel, close the air supply subsystem of the equipment layer on the k-th floor, and close the smoke exhaust subsystem on the concourse level (S200).

[0074] In some embodiments, the first underground floor is the equipment floor, the Nth underground floor is the platform floor, and the others are the station hall floor or equipment floor. When the fire detector detects a fire in the first underground floor equipment floor, all the exhaust and smoke exhaust subsystems in the first underground floor equipment floor are automatically linked to exhaust smoke; all the exhaust and smoke exhaust subsystems and air supply subsystems of the equipment floors on non-fire floors are automatically linked to shut down, the smoke exhaust subsystems and air supply subsystems in the public area of ​​the station hall are shut down, the smoke exhaust subsystems and air supply subsystems in the public area of ​​the platform are shut down, the station tunnel heat exhaust and smoke exhaust subsystem, the section tunnel air supply and smoke exhaust subsystem, and all air supply subsystems in the first underground floor are shut down.

[0075] In some embodiments, the first underground floor is the equipment floor, the Nth underground floor is the platform floor, and the others are the station hall floor or equipment floor. When the fire detector detects a fire in an equipment floor other than the first underground floor, all exhaust and smoke exhaust subsystems of the burning equipment floor will be automatically linked to exhaust smoke; the air supply subsystem of the first underground floor equipment floor will be automatically linked to supply air; the exhaust and smoke exhaust subsystems and air supply subsystems of the equipment floors other than the burning equipment floor and the first underground floor equipment floor will be automatically linked to shut down, the smoke exhaust subsystems and air supply subsystems of the public area of ​​the station hall will be shut down, the smoke exhaust subsystems and air supply subsystems of the public area of ​​the platform will be shut down, the station tunnel heat exhaust and smoke exhaust subsystems, the section tunnel air supply and smoke exhaust subsystems will be shut down, all air supply subsystems of the burning equipment floor will be shut down, and the exhaust and smoke exhaust subsystems of the first underground floor equipment floor will be shut down.

[0076] Figure 6 This is a flowchart of processing when a fire occurs in the public area of ​​the station hall layer provided by an embodiment of the present invention.

[0077] The underground level of a deep-buried subway station is the concourse level, and the Nth underground level is the platform level, where N≥3;

[0078] If a fire occurs in the public area of ​​the station hall level, the smoke exhaust subsystems at the first and second ends of the public area of ​​the station hall level will be automatically linked and turned on for smoke exhaust (S1000), and all the air supply subsystems on the underground equipment level will be automatically linked and turned on for air supply, and the equipment level exhaust and smoke exhaust subsystem and air supply subsystem except for the underground level will be automatically closed, all exhaust and smoke exhaust subsystems on the underground equipment level will be closed, all air supply subsystems on the station hall level will be closed, all smoke exhaust subsystems and air supply subsystems on the platform level will be closed, and the station tunnel heat exhaust and smoke exhaust subsystem and the section tunnel air supply and smoke exhaust subsystem will be closed (S2000).

[0079] In some embodiments, the first basement floor is an equipment floor, the Nth basement floor is a platform floor, and the kth basement floor is a concourse floor (1 < k < N). When a fire detector detects a fire in the public area of the concourse, the smoke exhaust subsystems at the first and second ends of the public area of the concourse are automatically linked and activated for smoke exhaust; all the air supply subsystems on the first basement floor equipment floor are automatically linked and activated for air supply; the exhaust and smoke exhaust subsystems and air supply subsystems on the equipment floor other than the first basement floor are automatically linked and closed, all the exhaust and smoke exhaust subsystems on the equipment floor of the first basement floor are closed, all the air supply subsystems on the concourse floor are closed, all the smoke exhaust subsystems and air supply subsystems on the platform floor are closed, and the tunnel exhaust heat and smoke exhaust subsystem and the interval tunnel air supply and smoke exhaust subsystem are closed.

[0080] Compared with the disadvantages and deficiencies of the prior art, the subway deep-buried station fire ventilation and smoke exhaust system and method provided by the present invention have a reasonable structure, solve the problems of poor air make-up and smoke exhaust effect in the prior art, the smoke exhaust and air supply of each floor of the deep-buried station are linked, and the tunnel smoke exhaust system and the tunnel heat exhaust system are also linked to participate in auxiliary smoke exhaust, so that the flow velocity at the escalator openings on each floor of the deep-buried station with an equipment floor meets the specification requirements during a fire on each floor, and solve the industry problem of difficult ventilation and smoke exhaust on each floor of the deep-buried station during a fire.

[0081] The present invention is not limited to the above embodiments, and any person can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as the present application, it falls within the protection scope of the present invention.

Claims

1. The fire ventilation and smoke exhaust system of subway deep buried multi-storey station is characterized by: It includes a smoke exhaust subsystem, an air supply subsystem, an exhaust and smoke exhaust subsystem, a station tunnel heat exhaust and smoke exhaust subsystem and an interval tunnel air supply and smoke exhaust subsystem, which are arranged in the station hall layer, at least one equipment layer and the platform layer of the deep-buried subway station, and the platform layer is the lowest layer, wherein the public area of ​​the station hall layer is configured with two smoke exhaust subsystems and two air supply subsystems, the equipment layer is configured with at least one exhaust and smoke exhaust subsystem and an air supply subsystem, the public area of ​​the platform layer is configured with two smoke exhaust subsystems and two air supply subsystems, the station tunnel heat exhaust and smoke exhaust subsystems are configured on both sides of the platform layer, and the interval tunnel air supply and smoke exhaust subsystems are configured at both ends of the platform layer, the number of the station tunnel heat exhaust and smoke exhaust subsystems is two, and the number of the interval tunnel air supply and smoke exhaust subsystems is four.

2. The fire ventilation and smoke exhaust system for a subway deep buried multi-storey station according to claim 1 is characterized in that: The smoke exhaust subsystem configured in the public area of ​​the station hall layer includes: a public area fan, a smoke exhaust fan interlocking air valve, a silencer, a smoke exhaust air booth, a set of smoke exhaust ducts, several electric air valves and several smoke exhaust outlets; the air supply subsystem configured in the public area of ​​the station hall layer includes: a public area fan, a supply air fan interlocking air valve, a silencer, a supply air booth, a set of supply air ducts, several electric air valves and several supply air outlets.

3. The fire ventilation and smoke exhaust system for subway deep buried multi-storey stations according to claim 1 is characterized in that: The smoke exhaust subsystem configured in the public area of ​​the platform layer includes: a public area fan, a smoke exhaust fan interlocking air valve, a muffler, a smoke exhaust air booth, a set of smoke exhaust ducts, several electric air valves and several smoke exhaust outlets; the air supply subsystem configured in the public area of ​​the platform layer includes: a public area fan, a supply air fan interlocking air valve, a muffler, a supply air booth, a set of supply air ducts, several electric air valves and several supply air outlets.

4. The fire ventilation and smoke exhaust system for subway deep buried multi-storey stations according to claim 1 is characterized in that: In the equipment layer, the exhaust and smoke exhaust subsystem includes: a public area fan, a smoke exhaust fan interlocking air valve, a muffler, a smoke exhaust air booth, a set of smoke exhaust ducts, several electric air valves and several smoke exhaust outlets; the supply air subsystem includes: a supply air fan, a supply air fan interlocking air valve, a muffler, a supply air booth, a set of supply air ducts, several electric air valves and several supply air outlets.

5. The fire ventilation and smoke exhaust system for deep buried multi-storey subway stations according to claim 1 is characterized in that: The station tunnel heat and smoke exhaust subsystem includes: a heat and smoke exhaust fan, a heat and smoke exhaust fan interlocking air valve, a muffler, a heat and smoke exhaust air booth, a set of platform public area smoke exhaust ducts, a set of station track top heat and smoke exhaust ducts, two fire dampers, a plurality of electric air valves and a plurality of smoke exhaust outlets.

6. The fire ventilation and smoke exhaust system for subway deep buried multi-storey stations according to claim 1 is characterized in that: The interval tunnel air supply and smoke exhaust subsystem includes: a tunnel air supply and smoke exhaust fan, an air supply and smoke exhaust fan interlocking air valve, a muffler, an air supply and smoke exhaust air booth, and an air supply and smoke exhaust outlet.

7. A method for ventilation and smoke exhaust in a subway deep-buried multi-story station fire, using the subway deep-buried multi-story station fire ventilation and smoke exhaust system according to any one of claims 1 to 6, characterized in that: In the underground first floor of a deep-buried subway station, the air supply is turned on, the smoke exhaust is turned on and the air supply is turned off on the fire floor, and the smoke exhaust and air supply are turned off on other floors.

8. The method for ventilation and smoke exhaust in a subway deep-buried multi-story station fire according to claim 7, characterized in that: The underground floor of a deep-buried subway station is the concourse floor, and the Nth underground floor is the platform floor, where N ≥ 3; If a fire breaks out in the public area of the platform floor, the smoke exhaust subsystems at the first and second ends of the public area on the platform floor, the tunnel exhaust and smoke exhaust subsystems at the first end of the station, and the tunnel exhaust and smoke exhaust subsystems at the second end of the station shall be automatically linked to start smoke exhaust. The supply and smoke exhaust subsystems at the first end of the up-tunnel, the supply and smoke exhaust subsystems at the second end of the up-tunnel, the supply and smoke exhaust subsystems at the first end of the down-tunnel, and the supply and smoke exhaust subsystems at the second end of the down-tunnel shall be automatically linked to start air exhaust. The supply subsystems at the first and second ends of the public area on the concourse floor shall be automatically linked to start air supply. All the exhaust and smoke exhaust subsystems and supply subsystems on the equipment floors shall be automatically linked to be closed. All the smoke exhaust subsystems on the concourse floor and all the supply subsystems on the platform floor shall be closed.

9. The method for fire ventilation and smoke exhaust of a deeply buried multi-layer subway station according to claim 7, characterized in that The first basement floor of the deeply buried subway station is the concourse floor, and the Nth basement floor is the platform floor, where N≥3; If a fire breaks out on the kth equipment floor, where 1<k<N, then all the exhaust and smoke exhaust subsystems on the kth floor shall be automatically linked to start smoke exhaust. The supply subsystems at the first and second ends of the public area on the concourse floor shall be automatically linked to start air supply. All the exhaust and smoke exhaust subsystems and supply subsystems on the non-fire equipment floors shall be automatically linked to be closed. The smoke exhaust and supply subsystems of the platform public area, the supply subsystems of the station tunnel exhaust and smoke exhaust subsystems and the interval tunnel supply and smoke exhaust subsystems shall be closed. The supply subsystem on the kth equipment floor and the smoke exhaust subsystem on the concourse floor shall be closed.

10. The method for ventilation and smoke exhaust in a subway deep-buried multi-story station fire according to claim 7, characterized in that: The first basement floor of the deeply buried subway station is the equipment floor, and the Nth basement floor is the platform floor, where N≥3; If a fire breaks out in the public area of the concourse floor, the smoke exhaust subsystems at the first and second ends of the concourse public area shall be automatically linked to start smoke exhaust. All the supply subsystems of the equipment floor on the first basement floor shall be automatically linked to start air supply. Except for the exhaust and smoke exhaust subsystems and supply subsystems of the equipment floor on the first basement floor, all the exhaust and smoke exhaust subsystems of the equipment floor on the first basement floor shall be closed. All the supply subsystems on the concourse floor, all the smoke exhaust and supply subsystems on the platform floor, the station tunnel exhaust and smoke exhaust subsystems, and the interval tunnel supply and smoke exhaust subsystems shall be closed.

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