CN111779526A - Air supply calculation method and device, air supply method, terminal and storage medium - Google Patents
Air supply calculation method and device, air supply method, terminal and storage medium Download PDFInfo
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Abstract
The embodiment of the application provides a pressurized air supply calculation method, a pressurized air supply calculation device, an air supply method, a terminal and a computer readable storage medium for a tunnel safe evacuation channel. The calculation method comprises the following steps: acquiring the number of evacuation doors set to be in an open state under the fire working condition; calculating the air supply quantity L required by the evacuation door in the open state according to the number of the evacuation doors in the open state and the pre-stored ventilation area at the evacuation door in the open stateDoor opening，LDoor openingThe wind speed of the door opening at the evacuation door in the open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel; safe evacuation communication under fire working conditionAir volume L required by air leakage of ductAir leakage，LAir leakageThe air supply quantity required for keeping the air speed of the door opening at the air leakage position to be safe; calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage. The technical problem that the calculated air supply amount is insufficient is solved.
Description
Technical Field
The present invention relates to the technical field of pressurized air supply for a tunnel evacuation passageway, and in particular, to a pressurized air supply calculation method, a pressurized air supply calculation device, an air supply method, a terminal, and a computer-readable storage medium for a tunnel evacuation passageway.
Background
The ultra-long underwater tunnel has the characteristics of long distance, large section, strong sealing property and the like, and accidents such as fire disasters and the like in the tunnel can cause serious injuries to drivers and passengers. The rectangle section tunnel cross section adopts the structure cross section of a diplopore piping lane, and both sides hole is the driving tunnel, and middle piping lane divide into the four layers, and the superiors are the wind channel of discharging fume, and the below is the cable space, and the below is safe evacuation passageway and electromechanical device space again, and the below is the piping arrangement space. In order to facilitate safe escape of personnel, in the existing tunnel engineering, pressurized air supply is carried out on a safety evacuation channel during fire so as to prevent smoke generated by the fire from entering the safety evacuation channel, however, at present, no clear calculation method is provided for the pressurized air supply quantity of the tunnel safety evacuation channel, and a door opening air speed method is often adopted to calculate the safety evacuation channel in the actual design process. The wind speed method is adopted to calculate the pressurized air supply quantity, and only the air quantity required for maintaining the door opening wind speed of the evacuation door in an open state to be between 0.7 and 1.2m/s is considered, so that the air supply quantity is insufficient.
Therefore, the insufficient air supply amount calculated by the pressurized air supply calculation method for the safe evacuation passage in the tunnel is a technical problem which needs to be solved urgently by the technical personnel in the field.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.
Disclosure of Invention
The embodiment of the application provides a pressurized air supply calculation method, a pressurized air supply calculation device, an air supply method, a terminal and a computer readable storage medium for a tunnel safe evacuation channel, and aims to solve the technical problem that the air supply quantity calculated by the pressurized air supply calculation method for the tunnel safe evacuation channel is insufficient.
The embodiment of the application provides a pressurized air supply calculation method for a tunnel safe evacuation channel, which comprises the following steps:
acquiring the number of evacuation doors set to be in an open state under the fire working condition;
number of evacuation doors according to opening state and pre-stored opening stateThe ventilation area of the evacuation door, and the air supply quantity L required by the evacuation door in the open stateDoor openingWherein L isDoor openingThe wind speed of a door opening at the evacuation door in an open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel;
calculating the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed;
calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
The embodiment of the application also provides the following technical scheme:
a pressurized air supply calculation device for a tunnel evacuation passageway, comprising:
the evacuation door position acquisition module is used for acquiring the number of evacuation doors which are set to be in an open state under the fire working condition;
the evacuation door position calculating module is used for calculating the air supply quantity L required by the evacuation door position in the opening state according to the number of the evacuation doors in the opening state and the pre-stored ventilation area of the evacuation door position in the opening stateDoor openingWherein L isDoor openingThe wind speed of a door opening at the evacuation door in an open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel;
the air leakage part calculation module is used for calculating the air supply quantity L required by the air leakage part of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed;
a pressurized air supply sum calculating module for calculating the sum L of the air supply required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
The embodiment of the application also provides the following technical scheme:
the air supply method of the safe evacuation channel of a tunnel, the sum of the air supply amount required by air supply is calculated and obtained through the above-mentioned pressurized air supply calculation method;
two pressurizing air blowers arranged at two ends of the safe evacuation channel perform pressurizing air supply according to the sum of the air supply amount required by the pressurizing air supply.
The embodiment of the application also provides the following technical scheme:
a terminal, comprising:
one or more processors;
storage means for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the forced air supply calculation method described above.
The embodiment of the application also provides the following technical scheme:
when executed by a processor, the program realizes the forced-air-flow calculation method described above.
Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:
acquiring the number of the evacuation doors set to be in an open state under the fire working condition, and calculating the air supply quantity L required by the evacuation doors in the open state according to the number of the evacuation doors in the open state and the pre-stored ventilation area of the evacuation doors in the open stateDoor opening(ii) a And calculating the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed; calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly. In this way, the pressurized air supply calculation method for the tunnel safe evacuation channel in the embodiment of the application not only considers the air supply quantity L required by keeping the air speed of the door opening at the evacuation door in the open state to be the safe air speedDoor openingAnd the air supply quantity L required for keeping the air speed of the door opening at the air leakage position of the safe evacuation channel to be the safe air speed is consideredAir leakageSo that the total amount L of air supply required for the pressurized air supplyGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer. When a fire disaster happens, the positive pressure requirement of the evacuation door in the opening state is realized, and a favorable and reliable escape environment is provided for personnel in the tunnel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart of a pressurized air supply calculation method for a tunnel evacuation passageway according to an embodiment of the present application;
fig. 2 is a schematic view of the tunnel evacuation passageway shown in fig. 1.
Description of reference numerals:
100 tunnel lanes, 200 evacuation safety channels, 210 evacuation doors, 220 deformation joints,
231 reserved holes special for water supply and drainage, 232 reserved holes special for power illumination,
reserved hole special for 233 communication signal and reserved hole special for 234 comprehensive monitoring
300 pressure blower.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
Fig. 1 is a flowchart of a pressurized air supply calculation method for a tunnel evacuation passageway according to an embodiment of the present application; fig. 2 is a schematic view of the tunnel evacuation passageway shown in fig. 1.
As shown in fig. 1 and fig. 2, a pressurized air supply calculation method for a tunnel evacuation safety channel according to an embodiment of the present application includes:
step S110: acquiring the number of evacuation doors 210 set to be in an open state under the fire working condition;
step S120: calculating the air supply quantity L required by the evacuation door in the open state according to the number of the evacuation doors in the open state and the pre-stored ventilation area at the evacuation door in the open stateDoor openingWherein L isDoor openingThe wind speed of the door opening at the evacuation door in the open state is kept to be the air supply amount required by the safe wind speed, the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel, and the safe evacuation channel 200 is arranged at one side of the tunnel traffic lane 100;
step S200: calculating the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed;
step S300: calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
According to the pressurized air supply calculation method for the tunnel safe evacuation channel, the number of the evacuation doors set to be in the open state under the fire working condition is obtained, and the air supply quantity L required by the evacuation doors in the open state is calculated according to the number of the evacuation doors in the open state and the pre-stored ventilation area of the evacuation doors in the open stateDoor opening(ii) a And calculating the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed; calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly. In this way, the pressurized air supply calculation method for the tunnel safe evacuation channel in the embodiment of the application not only considers the air supply quantity L required by keeping the air speed of the door opening at the evacuation door in the open state to be the safe air speedDoor openingAnd the air supply quantity L required for keeping the air speed of the door opening at the air leakage position of the safe evacuation channel to be the safe air speed is consideredAir leakageSo that the sum of the air supply amount required for the pressurized air supplyLGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer. When a fire disaster happens, the positive pressure requirement of the evacuation door in the opening state is realized, and a favorable and reliable escape environment is provided for personnel in the tunnel.
As shown in fig. 2, the air leakage of the evacuation passageway includes a plurality of types, the door gap of the evacuation door is set to be in a closed state under the working condition of fire, the deformation joints 220 (the interval is generally 50 meters) exist at intervals along the length direction of the tunnel in the evacuation passageway, and various special reserved holes of the evacuation passageway and gaps formed between devices in the reserved holes include: a reserved hole 231 special for water supply and drainage, a reserved hole 232 special for power illumination, a reserved hole 233 special for communication signals and a reserved hole 234 special for comprehensive monitoring.
In practice, step S200 includes one or more of the following steps:
step S210: calculating the air supply quantity L required by the door gap of the evacuation door set to be in a closed state under the fire working conditionDoor closerWherein L isDoor closerThe air speed of the door opening at the door gap of the closed evacuation door is kept to be the air output required by the safe air speed, and the door gap of the closed evacuation door is one of air leakage positions;
step S220: calculating the air supply quantity L required by each deformation joint of the safe evacuation passage under the fire working conditionDeformation jointWherein L isDeformation jointThe air supply quantity required by the safe air speed is kept at the door opening air speed of the deformation joint, and the deformation joint is one of air leakage positions;
step S230: calculating the air supply quantity L required by the clearance formed between various special reserved holes of the safe evacuation channel and the equipment in the reserved holesHole clearanceWherein L isHole clearanceThe air speed of a door opening at a gap formed between the special reserved hole and equipment in the reserved hole is kept to be the air output required by the safe air speed, and the gap formed between the special reserved hole and the equipment in the reserved hole is one of air leakage positions;
wherein, various special reservation holes include: the special reserved holes for water supply and drainage, the special reserved holes for power illumination, the special reserved holes for communication signals and the special reserved holes for comprehensive monitoring.
Considering the fire working condition, the evacuation door set in the closed state is still in the positive pressure area, and the door seam of the evacuation door in the closed state can cause air leakage; therefore, the forced air supply calculation method according to the embodiment of the present application performs forced air supply to the door gap at the evacuation door set in the closed state, so that the door gap door opening air speed at the evacuation door set in the closed state is maintained at the safe air speed, and thus the total air supply amount L required for forced air supply is totalGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer.
Each deformation joint of the safety evacuation channel is positioned in a positive pressure area, so that air leakage can be caused; therefore, the pressurized air supply calculation method provided by the embodiment of the application performs pressurized air supply for each deformation joint of the safe evacuation channel, so that the air speed of the door opening of each deformation joint of the safe evacuation channel is kept at the safe air speed, and thus, the sum L of the air supply amount required by the pressurized air supplyGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer.
Gaps formed between various special reserved holes of the safety evacuation channel and equipment in the reserved holes are positioned in a positive pressure area, so that air leakage can be caused; therefore, according to the pressurized air supply calculation method provided by the embodiment of the application, pressurized air supply is performed for gaps formed between various special reserved holes of the safe evacuation channel and equipment in the reserved holes, so that the door opening air speed of the gaps formed between the various special reserved holes of the safe evacuation channel and the equipment in the reserved holes is kept at the safe air speed, and thus the total air supply amount L required by the pressurized air supply is kept to be the safe air speedGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer.
In implementation, the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working condition is calculatedAir leakageFurther comprising the steps of:
calculating LAir leakage，LAir leakageIs the sum of the calculated air delivery required at the air leakage position.
In this way, the pressurized air supply calculation method according to the embodiment of the present application considers the door gap at the evacuation door set in the closed state under the fire working condition, the deformation joints at intervals in the safety evacuation channel along the length direction of the tunnel, the gaps formed between various special reserved holes of the safety evacuation channel and the devices in the reserved holes, and the total air supply amount L required by pressurized air supplyGeneral assemblyThe requirement of the air supply amount which is closer to the actual requirement enables the safe evacuation channel to be safer. When a fire disaster happens, the positive pressure requirement of the evacuation door in the opening state is realized, and a favorable and reliable escape environment is provided for personnel in the tunnel.
In the implementation, step S120 specifically includes:
calculating LDoor opening，LDoor opening＝WDoor with a door panel×HDoor with a door panel×V×NDoor openingWherein W isDoor with a door panelIs the width of the evacuation door HDoor with a door panelIs the height of the evacuation door, V is the safe wind speed, NDoor openingThe number of evacuation doors set to an open state under fire conditions.
Thus, L can be calculatedDoor opening。
In implementation, step S210 specifically includes:
determining the number N of evacuation doors set to a closed state in a fire situationDoor closer；
Step S212: calculating LDoor closer，LDoor closer＝0.827×SPerimeter of door seam×KWidth of door gap×ΔP1/c×1.25×NDoor closerWherein S isPerimeter of door seamTo evacuate the perimeter of the door slot at the door, KWidth of door gapThe width of the door gap at the evacuation door is shown, delta P is the average air leakage pressure difference at the air leakage position, C is the pressure difference index at the air leakage position, 0.827 is the air leakage coefficient, and 1.25 is the gap additional coefficient.
Thus, L can be calculatedDoor closer。
In the implementation, step S220 specifically includes:
calculating LDeformation joint，
LDeformation joint＝0.827×SInner perimeter of secure channel×KWidth of deformation joint×ΔP1/c×1.25×NDeformation jointWherein S isInner perimeter of secure channelIs the inner perimeter of the safe evacuation channel, KWidth of deformation jointIs the width of the deformation joint.
Thus, L can be calculatedDeformation joint。
In practice, step S230 is specifically configured to calculate LHole clearance，
Wherein, KWidth of hole gapThe width of a gap formed between each special reserved hole of the safe evacuation channel and equipment in the reserved hole; gnIs the total number of reserved holes specially used for water supply and drainage, Zgi is the perimeter Zgi of the ith reserved hole specially used for water supply and drainage; dn is the total number of power illumination dedicated reserved holes, Zdi is the perimeter of the ith power illumination dedicated reserved hole, Jn is the total number of integrated monitoring dedicated reserved holes, Zji is the perimeter of the ith integrated monitoring dedicated reserved hole, Tn is the total number of communication signal dedicated reserved holes, Zti is the perimeter of the communication signal dedicated reserved holes.
In implementation, the safe wind speed V is a wind speed value required for maintaining a positive pressure state in the safe evacuation channel to prevent smoke;
the safe wind speed is any value between 1.0 m/s and 1.2 m/s.
In particular, when the evacuation door is a double door, the evacuation door has 3 vertical door slots and 2 horizontal door slots of the width of the evacuation door when closed, SPerimeter of door seam＝WDoor with a door panel×2+HDoor with a door panel×3。
Thus, S can be obtainedPerimeter of door seam。
Specifically, KWidth of door gap＝KWidth of hole gapThe construction method is realized through construction.
In particular, when the evacuation route is rectangular, SSafety deviceInner perimeter of the track＝WSafety channel×2+HSafety channel×2。
Specifically, when WDoor with a door panel1.2m, HDoor with a door panel2.1 m, KWidth of door gap＝KWidth of hole gap0.004 m, KWidth of deformation joint0.02 m, 1.0 m/s, 12.0 pa,Cwhen the number is equal to 2, the alloy is put into a container,
when v is 1.2m/s, Δ P is 17 pa; v is between 1 m/s and 1.2m/s, and the delta P can be obtained by an interpolation calculation method.
Example two
According to the air supply method of the tunnel safe evacuation channel, the sum of the air supply amount required by air supply is calculated by the pressurized air supply calculation method in the first embodiment;
as shown in fig. 2, the two forced draft blowers 300 provided at both ends of the evacuation route perform forced draft according to the sum of the blowing amounts required for the forced draft.
EXAMPLE III
The pressurization air supply calculating device of the tunnel safe evacuation channel in the embodiment of the application comprises:
the evacuation door position acquisition module is used for acquiring the number of evacuation doors which are set to be in an open state under the fire working condition;
the evacuation door position calculating module is used for calculating the air supply quantity L required by the evacuation door position in the opening state according to the number of the evacuation doors in the opening state and the pre-stored ventilation area of the evacuation door position in the opening stateDoor openingWherein L isDoor openingThe wind speed of a door opening at the evacuation door in an open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel;
the air leakage part calculation module is used for calculating the air supply quantity L required by the air leakage part of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageIs the door opening wind speed protection at the air leakage position of the safe evacuation channelMaintaining the air supply amount required by the safe wind speed;
a pressurized air supply sum calculating module for calculating the sum L of the air supply required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
In an implementation, the wind leakage calculation module comprises at least one or more of the following calculation sub-modules:
an evacuation door gap calculation submodule for calculating the air supply quantity L required by the evacuation door gap set to be closed under the fire working conditionDoor closerWherein L isDoor closerThe air speed of the door opening at the door gap of the closed evacuation door is kept to be the air output required by the safe air speed, and the door gap of the closed evacuation door is one of air leakage positions;
a deformation joint calculation submodule for calculating the air supply volume L required by each deformation joint of the safe evacuation passage under the working condition of fireDeformation jointWherein L isDeformation jointThe air supply quantity required by the safe air speed is kept at the door opening air speed of the deformation joint, and the deformation joint is one of air leakage positions;
a hole gap calculation submodule for calculating the air supply L required by the gap formed between each special reserved hole of the safe evacuation channel and the equipment in the reserved holeHole clearanceWherein L isHole clearanceThe air speed of the door opening at the gap between the special reserved hole and the equipment in the reserved hole is kept to be the air output required by the safe air speed, and the gap between the special reserved hole and the equipment in the reserved hole is one of air leakage positions.
In implementation, the various dedicated pre-holes include: the special reserved holes for water supply and drainage, the special reserved holes for power illumination, the special reserved holes for communication signals and the special reserved holes for comprehensive monitoring.
In an implementation, the wind leakage calculation module further includes:
a sum submodule at the air leakage position for calculating LAir leakage，LAir leakageIs the sum of the calculated air delivery required at the air leakage position.
In practice, the evacuation door calculation module is specifically configured to calculate LDoor opening，LDoor opening＝WDoor with a door panel×HDoor with a door panel×V×NDoor openingWherein W isDoor with a door panelIs the width of the evacuation door HDoor with a door panelIs the height of the evacuation door, V is the safe wind speed, NDoor openingThe number of evacuation doors set to an open state under fire conditions.
In an implementation, the evacuation door crack calculation submodule includes:
an evacuation door close determination unit for determining the number N of evacuation doors set to a closed state under fire conditionsDoor closer；
A computing unit at the door gap of the evacuation door for computing LDoor closer，LDoor closer＝0.827×SPerimeter of door seam×KWidth of door gap×ΔP1/c×1.25×NDoor closerWherein S isPerimeter of door seamTo evacuate the perimeter of the door slot at the door, KWidth of door gapThe width of a door gap at the evacuation door is shown, delta P is the average air leakage pressure difference at the air leakage position, and C is the pressure difference index at the air leakage position.
In implementation, the deformation joint calculation submodule is specifically used for calculating LDeformation joint，
LDeformation joint＝0.827×SInner perimeter of secure channel×KWidth of deformation joint×ΔP1/c×1.25×NDeformation jointWherein S isInner perimeter of secure channelIs the inner perimeter of the safe evacuation channel, KWidth of deformation jointIs the width of the deformation joint.
In practice, the hole gap calculation submodule is specifically configured to calculate KWidth of hole gap，
Wherein, KWidth of hole gapThe width of a gap formed between each special reserved hole of the safe evacuation channel and equipment in the reserved hole; gnIs the total number of reserved holes specially used for water supply and drainage,zgi denotes the perimeter Zgi of the ith hole reserved exclusively for water supply and drainage; dn is the total number of power illumination dedicated reserved holes, Zdi is the perimeter of the ith power illumination dedicated reserved hole, Jn is the total number of integrated monitoring dedicated reserved holes, Zji is the perimeter of the ith integrated monitoring dedicated reserved hole, Tn is the total number of communication signal dedicated reserved holes, Zti is the perimeter of the communication signal dedicated reserved holes.
Example four
A terminal of the embodiment of the application includes:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the forced air supply calculation method according to the first embodiment.
EXAMPLE five
A computer-readable storage medium according to an embodiment of the present application stores a computer program that, when executed by a processor, implements a forced air flow calculation method according to a first embodiment.
In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (21)
1. A pressurized air supply calculation method for a tunnel safe evacuation channel is characterized by comprising the following steps:
acquiring the number of evacuation doors set to be in an open state under the fire working condition;
calculating the air supply quantity L required by the evacuation door in the open state according to the number of the evacuation doors in the open state and the pre-stored ventilation area at the evacuation door in the open stateDoor openingWherein L isDoor openingThe wind speed of a door opening at the evacuation door in an open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel;
calculating the air supply quantity L required by the air leakage position of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed;
calculating the total L of the air supply amount required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
2. The method according to claim 1, wherein the amount of air supply L required for the air leakage of the evacuation safety channel in case of fire is calculatedAir leakageComprises one or more of the following steps:
calculating the air supply quantity L required by the door gap of the evacuation door set to be in a closed state under the fire working conditionDoor closerWherein L isDoor closerThe air speed of the door opening at the door gap of the closed evacuation door is kept to be the air output required by the safe air speed, and the door gap of the closed evacuation door is one of air leakage positions;
calculating the air supply quantity L required by each deformation joint of the safe evacuation passage under the fire working conditionDeformation jointWherein L isDeformation jointThe wind speed of the door opening at the deformation joint is kept to be the safe wind speed placeThe required air supply quantity, the deformation joint is one of air leakage positions;
calculating the air supply quantity L required by the clearance formed between various special reserved holes of the safe evacuation channel and the equipment in the reserved holesHole clearanceWherein L isHole clearanceThe air speed of the door opening at the gap between the special reserved hole and the equipment in the reserved hole is kept to be the air output required by the safe air speed, and the gap between the special reserved hole and the equipment in the reserved hole is one of air leakage positions.
3. The forced air supply calculation method according to claim 2, wherein the amount of air supply L required for calculating the clearance formed between each of the reserved holes for exclusive use of the escape route and the equipment in the reserved holes is calculatedHole clearanceIn the step (2) of (a),
the various dedicated pre-holes include: the special reserved holes for water supply and drainage, the special reserved holes for power illumination, the special reserved holes for communication signals and the special reserved holes for comprehensive monitoring.
4. The method according to claim 3, wherein the amount of air supply L required for the air leakage of the evacuation safety channel in case of fire is calculatedAir leakageFurther comprising the steps of:
calculating LAir leakage，LAir leakageIs the sum of the calculated air delivery required at the air leakage position.
5. The forced air supply calculation method according to claim 4, wherein the amount of air supply L required at the evacuation door in the open state is calculated from the number of the evacuation doors in the open state and a ventilation area at the evacuation door in the pre-stored open stateDoor openingThe method specifically comprises the following steps:
calculating LDoor opening，LDoor opening＝WDoor with a door panel×HDoor with a door panel×V×NDoor openingWherein W isDoor with a door panelIs the width of the evacuation door HDoor with a door panelIs the height of the evacuation door, V is the safe wind speed, NDoor openingThe number of evacuation doors set to an open state under fire conditions.
6. The method of calculating forced air supply according to claim 5, wherein the amount of air supply L required at the door gap of the evacuation door set to the closed state in the case of fire is calculatedDoor closerThe method specifically comprises the following steps:
acquiring the number N of evacuation doors set to be in a closed state under the fire working conditionDoor closer；
Calculating LDoor closer，LDoor closer＝0.827×SPerimeter of door seam×KWidth of door gap×ΔP1/c×1.25×NDoor closerWherein S isPerimeter of door seamTo evacuate the perimeter of the door slot at the door, KWidth of door gapThe width of the door gap at the evacuation door is shown, delta P is the average air leakage pressure difference at the air leakage position, C is the pressure difference index at the air leakage position, 0.827 is the air leakage coefficient, and 1.25 is the gap additional coefficient.
7. The method according to claim 6, wherein the amount of air supply L required for each deformation joint of the evacuation safety path in case of fire is calculatedDeformation jointThe method specifically comprises the following steps:
calculating LDeformation joint，LDeformation joint＝0.827×SInner perimeter of secure channel×KWidth of deformation joint×ΔP1/c×1.25×NDeformation jointWherein S isInner perimeter of secure channelIs the inner perimeter of the safe evacuation channel, KWidth of deformation jointIs the width of the deformation joint.
8. The forced air supply calculation method according to claim 7, wherein the amount of air supply L required for calculating the clearance formed between each of the reserved holes for exclusive use of the escape route and the equipment in the reserved holes is calculatedHole clearanceThe method specifically comprises the following steps:
computing
Wherein, KWidth of hole gapThe width of a gap formed between each special reserved hole of the safe evacuation channel and equipment in the reserved hole; gnIs the total number of reserved holes specially used for water supply and drainage, Zgi is the perimeter Zgi of the ith reserved hole specially used for water supply and drainage; dn is the total number of power illumination dedicated reserved holes, Zdi is the perimeter of the ith power illumination dedicated reserved hole, Jn is the total number of integrated monitoring dedicated reserved holes, Zji is the perimeter of the ith integrated monitoring dedicated reserved hole, Tn is the total number of communication signal dedicated reserved holes, Zti is the perimeter of the communication signal dedicated reserved holes.
9. The method according to any one of claims 1 to 8, wherein the safe wind speed V is a wind speed value required for maintaining a positive pressure state in the safe evacuation path to prevent smoke;
the safe wind speed is any value between 1.0 m/s and 1.2 m/s.
10. The forced air supply calculation method according to claim 9, wherein S is set when the evacuation door is a double doorPerimeter of door seam＝WDoor with a door panel×2+HDoor with a door panel×3；
KWidth of door gap＝KWidth of hole gap；
When the safe evacuation passage is rectangular, SInner perimeter of secure channel＝WSafety channel×2+HSafety channel×2。
11. A pressurized air supply calculating device for a tunnel safe evacuation channel is characterized by comprising:
the evacuation door position acquisition module is used for acquiring the number of evacuation doors which are set to be in an open state under the fire working condition;
the evacuation door position calculating module calculates the opening state of the evacuation doors according to the number of the evacuation doors in the opening state and the pre-stored ventilation area of the evacuation doors in the opening stateAir volume L required by evacuation doorDoor openingWherein L isDoor openingThe wind speed of a door opening at the evacuation door in an open state is kept to be the air supply quantity required by the safe wind speed, and the evacuation doors are arranged at intervals along the length direction of the safe evacuation channel;
the air leakage part calculation module is used for calculating the air supply quantity L required by the air leakage part of the safe evacuation channel under the fire working conditionAir leakageWherein L isAir leakageThe wind speed of the door opening at the wind leakage position of the safe evacuation channel is kept to be the air supply quantity required by the safe wind speed;
a pressurized air supply sum calculating module for calculating the sum L of the air supply required by the pressurized air supplyGeneral assembly，LGeneral assembly＝LDoor opening+LAir leakage。
12. The forced air supply calculation apparatus of claim 11 wherein the leak calculation module comprises at least one or more of the following calculation sub-modules:
an evacuation door gap calculation submodule for calculating the air supply quantity L required by the evacuation door gap set to be closed under the fire working conditionDoor closerWherein L isDoor closerThe air speed of the door opening at the door gap of the closed evacuation door is kept to be the air output required by the safe air speed, and the door gap of the closed evacuation door is one of air leakage positions;
a deformation joint calculation submodule for calculating the air supply volume L required by each deformation joint of the safe evacuation passage under the working condition of fireDeformation jointWherein L isDeformation jointThe air supply quantity required by the safe air speed is kept at the door opening air speed of the deformation joint, and the deformation joint is one of air leakage positions;
a hole gap calculation submodule for calculating the air supply L required by the gap formed between each special reserved hole of the safe evacuation channel and the equipment in the reserved holeHole clearanceWherein L isHole clearanceIs required for maintaining the wind speed at the door opening at the gap between the special reserved hole and the equipment in the reserved hole to be the safe wind speedThe air supply quantity, the special reserved hole and the gap formed between the devices in the reserved hole are one of air leakage positions.
13. The forced air supply calculation apparatus of claim 12 wherein the various dedicated preformed holes comprise: the special reserved holes for water supply and drainage, the special reserved holes for power illumination, the special reserved holes for communication signals and the special reserved holes for comprehensive monitoring.
14. The forced air supply calculation apparatus of claim 13 wherein the leak calculation module further comprises:
a sum submodule at the air leakage position for calculating LAir leakage，LAir leakageIs the sum of the calculated air delivery required at the air leakage position.
15. The forced air supply calculation apparatus of claim 14 wherein the evacuation door calculation module is specifically configured to calculate LDoor opening，LDoor opening＝WDoor with a door panel×HDoor with a door panel×V×NDoor openingWherein W isDoor with a door panelIs the width of the evacuation door HDoor with a door panelIs the height of the evacuation door, V is the safe wind speed, NDoor openingThe number of evacuation doors set to an open state under fire conditions.
16. The forced air supply calculation apparatus of claim 15 wherein the evacuation door slot calculation submodule comprises:
an evacuation door close determination unit for determining the number N of evacuation doors set to a closed state under fire conditionsDoor closer；
A computing unit at the door gap of the evacuation door for computing LDoor closer，LDoor closer＝0.827×SPerimeter of door seam×KWidth of door gap×ΔP1/c×1.25×NDoor closerWherein S isPerimeter of door seamTo evacuate the perimeter of the door slot at the door, KWidth of door gapThe width of the door gap at the evacuation door, and delta P is the average of the air leakageAnd C is the pressure difference index of the air leakage position.
17. The forced air supply calculation apparatus of claim 16 wherein the deformation joint calculation submodule is configured to calculate L in particularDeformation joint，
LDeformation joint＝0.827×SInner perimeter of secure channel×KWidth of deformation joint×ΔP1/c×1.25×NDeformation jointWherein S isInner perimeter of secure channelIs the inner perimeter of the safe evacuation channel, KWidth of deformation jointIs the width of the deformation joint.
18. The forced air supply calculation apparatus of claim 17 wherein the hole gap calculation submodule is configured to calculate KWidth of hole gap，
Wherein, KWidth of hole gapThe width of a gap formed between each special reserved hole of the safe evacuation channel and equipment in the reserved hole; gnIs the total number of reserved holes specially used for water supply and drainage, Zgi is the perimeter Zgi of the ith reserved hole specially used for water supply and drainage; dn is the total number of power illumination dedicated reserved holes, Zdi is the perimeter of the ith power illumination dedicated reserved hole, Jn is the total number of integrated monitoring dedicated reserved holes, Zji is the perimeter of the ith integrated monitoring dedicated reserved hole, Tn is the total number of communication signal dedicated reserved holes, Zti is the perimeter of the communication signal dedicated reserved holes.
19. An air supply method for a tunnel safe evacuation channel is characterized in that the sum of the air supply amount required by air supply is calculated by the pressurized air supply calculation method according to any one of claims 1 to 10;
two pressurizing air blowers arranged at two ends of the safe evacuation channel perform pressurizing air supply according to the sum of the air supply amount required by the pressurizing air supply.
20. A terminal, comprising:
one or more processors;
storage means for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the forced air supply calculation method of any of claims 1-10.
21. A computer-readable storage medium storing a computer program, wherein the program is executed by a processor to implement the forced air supply calculation method according to any one of claims 1 to 10.
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