Evacuation capability evaluation method, device and equipment for external emergency refuge space

Abstract

The invention discloses an evacuation capability evaluation method, device and equipment for an external emergency refuge space. The method comprises the following steps: obtaining building information in a first target range; acquiring real-time population distribution data and census population data in a first target range in the to-be-evaluated time period; obtaining real population distribution data in a first target range according to the real-time population distribution data and the census population data; obtaining a plurality of evacuation points and to-be-evacuated information of each evacuation point according to the real population distribution data and the building information; all external emergency refuge spaces in a second target range with the evacuation point as the center are obtained; and based on a preset escape speed data group, according to the to-be-evacuated information and the road information corresponding to the evacuation point, obtaining a first evacuation capability evaluation result whether each external emergency refuge space is reachable within a preset time threshold. According to the method provided by the invention, the actual evacuation effect of the emergency refuge space in the to-be-evaluated time period can be accurately evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency shelter, and particularly to an evaluation method, device and equipment for the evacuation capacity of an external emergency shelter space. Background Art

[0002] Emergency shelters are important places for residents to take emergency disaster prevention and avoidance and temporary resettlement, and play a very important role in the safety and sustainable development of cities. When a disaster occurs, as one of the destinations for evacuating people, the rationality of the location construction of emergency shelters is directly related to the safety of the lives and property of urban populations and the sustainable development of cities. When carrying out urban planning and construction, parks, green spaces, squares and other shelters are usually planned to meet the shelter needs. However, since the location selection methods for emergency shelters usually adopt methods such as exhaustive search and field research, these location selection methods lack comprehensive investigation and attention to the dynamic population flow situation, and it is very likely that the already constructed emergency shelters are difficult to meet the actual shelter needs. Therefore, in order to clarify the improvement and optimization direction of the layout and design of emergency shelter spaces, an accurate evaluation of the evacuation capacity of the already constructed emergency shelter spaces is crucial. Summary of the Invention

[0003] For this reason, the present invention provides an evaluation method, device and equipment for the evacuation capacity of an external emergency shelter space to more accurately evaluate the evacuation capacity of the already constructed emergency shelter space.

[0004] For this reason, according to the first aspect, the present invention provides an evaluation method for the evacuation capacity of an external emergency shelter space, including the following steps:

[0005] Obtain building information within a first target range; the building information includes building location information and building contour information;

[0006] Obtain real-time population distribution data and census population data within the first target range during a period to be evaluated;

[0007] Obtain real population distribution data within the first target range according to the real-time population distribution data and the census population data;

[0008] Obtain a number of evacuation points and the evacuation information of each evacuation point according to the real population distribution data and the building information; the evacuation information includes evacuation population information, evacuation point location information and evacuation point height information;

[0009] Obtain all external emergency shelter spaces within a second target range centered on the evacuation points;

[0010] Based on the preset escape speed data group, according to the evacuation information to be evacuated and the road information corresponding to the evacuation points, obtain the first evacuation capacity evaluation result of whether each external emergency shelter space can be reached within the preset time threshold.

[0011] Optionally, the step of obtaining the real population distribution data within the first target range according to the real-time population distribution data and the census population data specifically includes:

[0012] Compare the real-time population distribution data and the census population data to obtain the differential population data, and count the differential number of people in each age group;

[0013] Obtain the statistical information of the activities of residents in each age group during the period to be evaluated;

[0014] According to the statistical information of residents' activities, allocate the differential number of people in each age group to different regions to obtain the real population distribution data.

[0015] Optionally, the step of obtaining several evacuation points and the evacuation information to be evacuated at each evacuation point according to the real population distribution data and the building information specifically includes:

[0016] According to the real population distribution data and the building information, obtain the real population information within the scope of each building, and use the building with the corresponding real population number greater than the first preset value as the evacuation point; the real population information corresponding to the evacuation point is the population information to be evacuated;

[0017] According to the building location information and the building outline information corresponding to the evacuation point, obtain the evacuation point location information and the evacuation point height information.

[0018] Optionally, the period to be evaluated is any one of the daily working period, the daily non-working period, and the late night period.

[0019] Optionally, the escape speed data group includes the escape speed data inside the building and the escape speed data outside the building, and both include the male escape speed in each age group and the female escape speed in each age group.

[0020] Optionally, the method for evaluating the evacuation capacity of the external emergency shelter space further includes the following steps:

[0021] Obtain the corresponding relationship between each evacuation point and each external emergency shelter space; when an evacuation point and an external emergency shelter space can be reached within the preset time threshold, they correspond to each other;

[0022] Obtain the number of evacuees that each external emergency shelter space can accommodate, and compare the number of evacuees that the corresponding external emergency shelter space can accommodate with the number of people to be evacuated at the evacuation point to obtain the second evacuation capacity evaluation result of whether the population capacity of each external emergency shelter space meets the standard.

[0023] According to a second aspect, the present invention further provides an evaluation device for the evacuation capacity of an external emergency shelter space, including:

[0024] A building information acquisition module for acquiring building information within a first target range; the building information includes building location information and building outline information;

[0025] A population data acquisition module for acquiring real-time population distribution data and census population data within the first target range during a period to be evaluated;

[0026] A population distribution calibration module for obtaining the real population distribution data within the first target range based on the real-time population distribution data and the census population data;

[0027] An evacuation point extraction module for obtaining a plurality of evacuation points and the evacuation information of each evacuation point based on the real population distribution data and the building information; the evacuation information includes the population information to be evacuated, the evacuation point location information, and the evacuation point height information;

[0028] A shelter space acquisition module for acquiring all external emergency shelter spaces within a second target range centered on the evacuation points;

[0029] An evacuation capacity evaluation module for obtaining a first evacuation capacity evaluation result on whether each external emergency shelter space can be reached within a preset time threshold based on a preset escape speed data set, according to the evacuation information and the road information corresponding to the evacuation points.

[0030] According to a third aspect, an embodiment of the present invention provides an evaluation device for the supply-demand matching of sports fitness facilities in an open space, including: at least one processor; and a memory communicatively connected to the at least one processor; computer instructions are stored in the memory, and the processor executes the computer instructions to execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0031] According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0032] The technical solution provided by the present invention has the following advantages:

[0033] The evacuation capacity evaluation method for the external emergency shelter space provided by the present invention adopts a time - segmented evaluation method to improve the evaluation accuracy based on the inventor's consideration that the population distribution varies greatly at different times. Furthermore, by obtaining the real - time population distribution data and census population data for the time period to be evaluated and thereby obtaining the real population distribution data, the real population distribution data has both the dynamic real - time nature of the real - time population distribution data and the comprehensive integrity of the census population data. Then, by obtaining the building information within the first target range and obtaining several evacuation points and the evacuation information for each evacuation point based on the building information and the real - time population distribution data, the obtained evacuation information is also real - time and accurate information considering the dynamic population flow. Finally, based on obtaining the external emergency shelter space within the second target range centered on the evacuation points, the accessibility evaluation results of each external emergency shelter space obtained according to the evacuation information, the road information corresponding to the evacuation points, and the preset escape speed data group can accurately evaluate the actual evacuation role that the emergency shelter space can play in the time period to be evaluated, thereby being able to point out a clear and accurate direction for improvement and optimization in the layout and design of the emergency shelter space. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following - described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a flowchart of a method for the evacuation capacity evaluation method of an external emergency shelter space provided by an embodiment of the present invention;

[0036] Figure 2 It is another flowchart of a method for the evacuation capacity evaluation method of an external emergency shelter space provided by an embodiment of the present invention;

[0037] Figure 3 It is a principle block diagram of an evacuation capacity evaluation device for an external emergency shelter space provided by an embodiment of the present invention;

[0038] Figure 4 It is a schematic hardware structure diagram of an evacuation capacity evaluation device for an external emergency shelter space provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] Embodiment 1

[0042] Figure 1 The flowchart of an evaluation method for the evacuation capacity of an external emergency shelter space in an embodiment of the present invention is shown. Specifically, as Figure 1 shown, the method may include the following steps:

[0043] S100: Obtain building information within a first target range.

[0044] In this embodiment, the building information includes building location information and building outline information. Specifically, the building location information may be the longitude and latitude information of the building center point, and the building outline information may include information such as the length, width, and height of the building.

[0045] S200: Obtain real-time population distribution data and census population data within the first target range during a period to be evaluated.

[0046] In this embodiment, the period to be evaluated may be set according to the population flow characteristics in a specific application scenario. Specifically, when there is a large-scale population flow at a time node, the two time periods before and after the time node may be respectively used as a period to be evaluated. Exemplarily, if 7:00-9:00 on a weekday is a period of large-scale population flow, then 0:00-7:00 on the weekday may be set as one period to be evaluated, and 9:00-12:00 may be set as another period to be evaluated.

[0047] In this embodiment, the period to be evaluated may be any one of the daily periods on weekdays, the daily periods on non-working days, and the late-night period.

[0048] In this embodiment, the period to be evaluated may also be set as any one of the periods 0:00-7:00, 7:00-10:00, 10:00-14:00, 14:00-18:00, 18:00-21:00; of course, on this basis, separate period evaluations may be performed for different natural days such as weekdays, weekends, and holidays.

[0049] Specifically, the real-time population distribution data can be obtained through mobile phone signaling data, map heat map data, etc.

[0050] S300: Obtain the real population distribution data within the first target range according to the real-time population distribution data and the census population data.

[0051] In this embodiment, the real population distribution data can be obtained through the following steps:

[0052] S301: Compare the real-time population distribution data and the census population data to obtain the difference population data, and count the number of people in each age group.

[0053] Specifically, the age groups can be divided according to the population flow in the specific application scenario, and the population flow within each age group obtained by the division is relatively similar; for example, the age groups can be set to include: preschool (0 - 5 years old), primary school students (6 - 12 years old), middle school students (13 - 18 years old), college students (19 - 22 years old), young people (23 - 40 years old), middle-aged people (41 - 64 years old), and the elderly (65 years old and above); of course, the age groups can also be divided using other interval division methods, and the above example is only a specific example listed for the convenience of those skilled in the art to understand.

[0054] S302: Obtain the statistical information of residents' activities in each age group during the period to be evaluated.

[0055] Specifically, the statistical information of residents' activities in each age group during the period to be evaluated can be the proportion of the population dispersed in each area after the residents' activities. For example, if the period to be evaluated is 7:00 - 10:00 on a weekday and the age group is 23 - 40 years old, the statistical information of residents' activities can be the proportion of the population of 23 - 40-year-old residents moving to various area places such as office buildings, shopping malls, and schools during the period of 7:00 - 10:00 on a weekday.

[0056] S303: Allocate the number of people in each age group to different regions according to the statistical information of residents' activities to obtain the real population distribution data.

[0057] Specifically, according to the proportion of the population dispersed in each area after the residents' activities in step S302 above, the number of people with differences can be allocated to each area according to this proportion.

[0058] S400: Obtain a number of evacuation points and the evacuation information of each evacuation point according to the real population distribution data and the building information.

[0059] In this embodiment, the evacuation information includes the evacuation population information, the evacuation point location information, and the evacuation point height information.

[0060] In this embodiment, a number of evacuation points and the evacuation information of each evacuation point can be specifically obtained through the following steps:

[0061] S401: Obtain the real population information within the scope of each building according to the real population distribution data and building information, and use the building with the corresponding real population number greater than the first preset value as the evacuation point.

[0062] Specifically, the real population information corresponding to the evacuation point is the population information to be evacuated.

[0063] Specifically, the building scope can not only include the actual contour scope of the building, but also include a preset scope outside the building, such as a scope with a straight-line distance less than 5 meters, 10 meters, etc. from the building.

[0064] Specifically, the preset scope can be set according to the shelter types (such as fire, earthquake, etc.) and building types in the actual application scenario; for example, the building type can be the building function type (such as school building, office building, residential building, etc.) or the building height type (such as low-rise, small high-rise, high-rise, super high-rise, etc.).

[0065] Specifically, the first preset value can be 0, that is, as long as the real population number in a building is not 0, it is used as the evacuation point.

[0066] Specifically, since the real population number includes the allocation data based on the census population data, the first preset value can also be set to a number greater than 0 to eliminate some evacuation points caused by the error of allocation. For example, the first preset value can be set to 2, 3, or 4, etc.

[0067] S402: Obtain the evacuation point location information and the evacuation point height information according to the building location information and the building contour information corresponding to the evacuation point.

[0068] Specifically, the evacuation point location information can be the center point location information of the corresponding building, and the evacuation point height information can be half of the height of the corresponding building.

[0069] S500: Obtain all external emergency shelter spaces within the second target range centered on the evacuation point.

[0070] Specifically, the second target range can be within 1 km, within 1.5 km, etc.

[0071] S600: Based on the preset escape speed data group, obtain the first evacuation ability evaluation result on whether each external emergency shelter space can be reached within the preset time threshold according to the evacuation information and the road information corresponding to the evacuation point.

[0072] In this embodiment, the escape speed data group includes the escape speed data inside the building and the escape speed data outside the building, and both of them include the escape speeds of males and females in each age group.

[0073] In this embodiment, the road information can be the optimal path information. Specifically, the optimal path information can be obtained by calculating based on the path planning of the road network, combining the road information and the elevation information.

[0074] Specifically, the preset time threshold can be set according to the types of shelters (such as fires, earthquakes, etc.) and the shelter levels in specific application scenarios; for example, the preset time threshold can be set to 10 minutes or 15 minutes, etc.

[0075] As an optional specific implementation manner in this embodiment, in order to further improve the evaluation accuracy and comprehensiveness of the evaluation method in this embodiment, as Figure 2 shown, it can be set that on the basis of including the above steps S100 - step S600, the method in this embodiment further includes the following steps:

[0076] S700: Obtain the corresponding relationship between each evacuation point and each external emergency shelter space.

[0077] In this embodiment, when an evacuation point and an external emergency shelter space are reachable within the preset time threshold, they correspond to each other.

[0078] S800: Obtain the number of people that each external emergency shelter space can accommodate, and compare the number of people that the corresponding external emergency shelter space can accommodate with the number of people to be evacuated at the evacuation point, so as to obtain the second evacuation capacity evaluation result on whether the population capacity of each external emergency shelter space meets the standard.

[0079] Specifically, the number of people that an external emergency shelter space can accommodate can be extracted from the planning information of the external emergency shelter space, or can be obtained by calculating after actually collecting its space information.

[0080] During specific implementation, when there are multiple external emergency shelter spaces corresponding to an evacuation point, the probability that the crowd at the evacuation point selects each corresponding external emergency shelter space (this probability can be obtained through statistics) can be obtained first, and then the number of people flowing from the population to be evacuated at the evacuation point to each corresponding external emergency shelter space can be calculated; similarly, when there are multiple evacuation points corresponding to an external emergency shelter space, the sum of the number of people flowing from each corresponding evacuation point to this external emergency shelter space can be calculated, and this sum value can be compared with the number of people that the external emergency shelter space can accommodate, so as to obtain the second evacuation capacity evaluation result.

[0081] An embodiment of the present invention also provides an evacuation capacity evaluation device for an external emergency shelter space, as follows Figure 3 shown. The device includes: a building information acquisition module 100, a population data acquisition module 200, a population distribution calibration module 300, an evacuation point extraction module 400, a shelter space acquisition module 500, and an evacuation capacity evaluation module 600. Among them,

[0082] The building information acquisition module 100 is used to acquire building information within a first target range; the building information includes building location information and building outline information.

[0083] The population data acquisition module 200 is used to acquire real-time population distribution data and census population data within the first target range during a period to be evaluated.

[0084] The population distribution calibration module 300 is used to obtain real population distribution data within the first target range based on the real-time population distribution data and the census population data.

[0085] The evacuation point extraction module 400 is used to obtain a plurality of evacuation points and evacuation information to be evacuated for each evacuation point based on the real population distribution data and the building information; the evacuation information to be evacuated includes to-be-evacuated population information, evacuation point location information, and evacuation point height information.

[0086] The shelter space acquisition module 500 is used to acquire all external emergency shelter spaces within a second target range centered on the evacuation point.

[0087] The evacuation capacity evaluation module 600 is used to obtain a first evacuation capacity evaluation result on whether each external emergency shelter space can be reached within a preset time threshold based on a preset escape speed data set, according to the evacuation information to be evacuated and the road information corresponding to the evacuation point.

[0088] The specific functions of each module in the device can be understood with reference to the content in the above method, and will not be elaborated here.

[0089] The evacuation capacity evaluation method and device for the external emergency shelter space in this embodiment adopt a time-segmented evaluation method to improve the evaluation accuracy based on the inventor's consideration that the population distribution varies greatly at different times. Furthermore, by obtaining the real-time population distribution data and census population data for the time period to be evaluated and thereby obtaining the real population distribution data, the real population distribution data has both the dynamic real-time nature of the real-time population distribution data and the comprehensive integrity of the census population data. Then, by obtaining the building information within the first target range and obtaining a number of evacuation points and the evacuation information for each evacuation point based on the building information and the real-time population distribution data, the obtained evacuation information is also real-time and accurate information considering the dynamic population flow. Finally, based on obtaining the external emergency shelter space within the second target range centered on the evacuation point, the reachability evaluation results of each external emergency shelter space obtained according to the evacuation information, the road information corresponding to the evacuation point, and the preset escape speed data group can accurately evaluate the actual evacuation role that the emergency shelter space can play in the time period to be evaluated, thereby being able to point out a clear and accurate improvement and optimization direction for the layout and design of the emergency shelter space.

[0090] Embodiment 2

[0091] The embodiment of the present invention also provides an evacuation capacity evaluation device for an external emergency shelter space, as Figure 4 shown. This device may include a processor 41 and a memory 42, where the processor 41 and the memory 42 may be connected through a bus or other means. Figure 4 Here, the case of connection through a bus is taken as an example.

[0092] The processor 41 may be a central processing unit (CPU). The processor 41 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., or a combination of the above types of chips.

[0093] The memory 42, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the evacuation capacity evaluation method for the external emergency shelter space in Embodiment 1 of the present invention. By running the non-transitory software programs, instructions, and modules stored in the memory 42, the processor 41 executes various functional applications and data processing of the processor, that is, implements the evacuation capacity evaluation method for the external emergency shelter space in the above-mentioned Method Embodiment 1.

[0094] The memory 42 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created by the processor 41 and the like. In addition, the memory 42 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 42 may optionally include a memory remotely provided with respect to the processor 41, and these remote memories can be connected to the processor 41 through a network. Examples of the above-mentioned network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0095] The one or more modules are stored in the memory 42 and, when executed by the processor 41, execute the evacuation capacity evaluation method for the external emergency shelter space in Figures 1 - 2 the shown Embodiment 1.

[0096] For the specific details of the above-mentioned evacuation capacity evaluation device for the external emergency shelter space, reference can be made to Figures 1 to 2 the corresponding relevant descriptions and effects in the shown Embodiment 1, and details will not be repeated here.

[0097] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiment methods, it can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned method embodiments. Among them, the storage medium can be a magnetic disk, an optical disc, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memories.

[0098] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. An evaluation method for the evacuation capacity of an external emergency shelter space, characterized in that, Including the following steps: Obtain building information within a first target range; the building information includes building location information and building outline information; Obtain real-time population distribution data and census population data within the first target range during a period to be evaluated; Obtain the real population distribution data within the first target range based on the real-time population distribution data and the census population data; Obtain a number of evacuation points and the evacuation information of each evacuation point based on the real population distribution data and the building information; the evacuation information includes evacuation population information, evacuation point location information, and evacuation point height information; Obtain all external emergency shelter spaces within a second target range centered on the evacuation point; Based on a preset escape speed data set, obtain a first evacuation capacity evaluation result on whether each external emergency shelter space can be reached within a preset time threshold according to the evacuation information and the road information corresponding to the evacuation point.

2. The evacuation capacity evaluation method for the external emergency shelter space according to claim 1, characterized in that The step of obtaining the real population distribution data within the first target range based on the real-time population distribution data and the census population data specifically includes: Compare the real-time population distribution data and the census population data to obtain difference population data, and count the difference numbers of each age group; Obtain the statistical information of residents' activities of each age group during the period to be evaluated; Allocate the difference numbers of each age group according to the statistical information of residents' activities to obtain the real population distribution data.

3. The evacuation capacity evaluation method for the external emergency shelter space according to claim 1 or 2, characterized in that, The step of obtaining a number of evacuation points and the evacuation information of each evacuation point based on the real population distribution data and the building information specifically includes: Obtain the real population information falling within the scope of each building based on the real population distribution data and the building information, and use the building with the corresponding real population number greater than a first preset value as an evacuation point; the real population information corresponding to the evacuation point is the evacuation population information; Obtain the evacuation point location information and the evacuation point height information based on the building location information and the building outline information corresponding to the evacuation point.

4. The evacuation capacity evaluation method of the external emergency shelter space according to claim 1, characterized in that, The period to be evaluated is any one of the daily period on weekdays, the daily period on non-working days, and the late night period.

5. The evacuation capacity evaluation method of the external emergency shelter space according to claim 1, characterized in that, The escape speed data set includes the escape speed data inside the building and the escape speed data outside the building, and both include the male escape speed of each age group and the female escape speed of each age group.

6. The evacuation capacity evaluation method for the external emergency shelter space according to any one of claims 1-5, characterized in that, Also including the following steps: Obtain the corresponding relationship between each evacuation point and each external emergency shelter space; when an evacuation point and an external emergency shelter space can be reached within the preset time threshold, they correspond to each other; Obtain the number of people that each external emergency shelter space can accommodate, and compare the number of people that the corresponding external emergency shelter space can accommodate with the number of people to be evacuated at the evacuation point to obtain a second evacuation capacity evaluation result on whether the population capacity of each external emergency shelter space meets the standard.

7. An evacuation capacity evaluation device for an external emergency shelter space, characterized in that Including: A building information acquisition module for obtaining building information within a first target range; The building information includes building location information and building outline information; A population data acquisition module, configured to acquire real-time population distribution data and census population data within the first target range during the period to be evaluated; A population distribution calibration module, configured to obtain the real population distribution data within the first target range according to the real-time population distribution data and the census population data; An evacuation point extraction module, configured to obtain a plurality of evacuation points and the evacuation information of each evacuation point according to the real population distribution data and the building information; the evacuation information includes evacuation population information, evacuation point location information, and evacuation point height information; A refuge space acquisition module, configured to acquire all external emergency refuge spaces within the second target range centered on the evacuation point; An evacuation capacity evaluation module, configured to obtain a first evacuation capacity evaluation result on whether each of the external emergency refuge spaces can be reached within a preset time threshold based on a preset escape speed data set, according to the evacuation information and the road information corresponding to the evacuation point.

8. An evacuation capacity evaluation device for an external emergency shelter space, characterized in that Comprising: At least one processor; And a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the method described in any one of the above claims 1-6.

9. A computer-readable storage medium having computer instructions stored thereon, characterized in that, When the instructions are executed by the processor, the steps of the method described in any one of the above claims 1-6 are implemented.

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