Inundation risk evaluation support device and inundation risk evaluation support program

Abstract

To provide an inundation risk evaluation support device and an inundation risk evaluation support program capable of identifying a location requiring a countermeasure for suppressing inundation with respect to an evaluation target space in a building.SOLUTION: An inundation risk evaluation support device 10 is provided in a building, and includes: a derivation unit 11A configured to, with at least one of a plurality of spaces connected to adjacent spaces through openings as an evaluation target space, derive an inundation risk value indicating the level of risk of inundation from each opening existing in a route from outside the building to the evaluation target space; and a presentation unit 11B configured to present situation information indicating a situation of inundation risk due to the openings provided in the route, using the inundation risk values derived by the derivation unit 11A.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a flood risk assessment support device and a flood risk assessment support program. [Background technology]

[0002] Conventionally, the following technologies have been available to help assess flood risk, which is the risk of flooding to buildings.

[0003] Patent Document 1 discloses a flood risk assessment system that aims to enable accurate calculation of flood risk.

[0004] This flood risk diagnosis system has an expected damage calculation means that calculates the expected amount of damage that will occur to the facility if a flood of a specified water level occurs, based on a fragility curve that shows the relationship between the flood water level and the probability of damage to the components that make up the facility along the flood path, and the amount of damage if the components that make up the facility are damaged, and a damage occurrence probability calculation means that calculates the probability that a specified expected amount of damage will occur to the facility, based on the expected damage that will occur to the facility if a flood of a specified water level occurs, calculated by the expected damage calculation means, and the probability of a flood of a specified water level occurring, and is characterized in that the probability of a flood of a specified water level occurring is calculated using the Gumbel distribution formula from actual data.

[0005] Patent Document 2 discloses a flood damage calculation program that aims to efficiently determine the flood vulnerability and flood damage of each section of a structure.

[0006] This flood damage calculation program is a flood damage calculation program for controlling a computer system to calculate flood damage, the computer system comprising a processor and a storage device, the storage device holding facility data including information on component types for each section into which a structure is divided according to a predetermined criterion, and component vulnerability data for each component type including information indicating the relationship between the elevation of the section and the flood level at which damage will occur, the facility data including information on the elevation of at least some of the multiple sections, and the flood damage calculation program causing the processor to execute a process to calculate the flood level at which damage will occur for each section based on the component type and elevation for each section and the component vulnerability data. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-296504 [Patent Document 2] Japanese Patent Publication No. 2023-50502 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the technology disclosed in Patent Document 1 is intended to derive the probability of expected damage occurring to a facility, and has the problem that it cannot identify areas where measures should be taken to prevent flooding in the space being evaluated within the building (facility).

[0009] Furthermore, the technology disclosed in Patent Document 2 is intended for structures built on uneven ground, and so this technology also has the problem of being unable to identify areas where measures need to be taken to prevent flooding of the space being evaluated within the building.

[0010] The present disclosure has been made in consideration of the above circumstances, and aims to provide a flood risk assessment support device and a flood risk assessment support program that can identify areas where measures should be taken to prevent flooding into the space being evaluated within a building. [Means for solving the problem]

[0011] The flood risk assessment support device of the present invention described in claim 1 is provided with: a derivation unit that derives a flood risk value indicating the level of risk of flooding through each opening on a path from outside the building to the space to be assessed, with at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings as the space to be assessed; and a presentation unit that uses the flood risk value derived by the derivation unit to present situation information indicating the status of the flood risk due to the openings provided on the path.

[0012] According to the flood risk assessment support device of the present invention described in claim 1, at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings is set as the evaluation target space, and for each opening on the path from the outside of the building to the evaluation target space, a flood risk value indicating the level of risk of flooding through that opening is derived, and the derived flood risk value is used to present situational information indicating the status of the flood risk due to the openings provided on the above-mentioned path, making it possible to grasp the status of the flood risk due to those openings, and as a result, to identify the locations where measures should be taken to prevent flooding into the evaluation target space within the building.

[0013] The flood risk assessment support device of the present invention described in claim 2 is the flood risk assessment support device described in claim 1, wherein the presentation unit presents, as the situation information, a graph in which each of the openings and spaces present on the route is treated as a node, adjacent nodes are connected by lines, and the openings are associated with corresponding flood risk values.

[0014] According to the flood risk assessment support device of the present invention described in claim 2, by treating each opening and space on the above route as a node as situation information, connecting adjacent nodes with lines, and presenting a graph that associates the openings with corresponding flood risk values, it is possible to make it easier to understand the flood risk situation.

[0015] The flood risk assessment support device of the present invention described in claim 3 is a flood risk assessment support device described in claim 1 or claim 2, wherein the derivation unit derives the flood risk value using a grade based on the amount of water leakage from the target opening.

[0016] According to the flood risk assessment support device of the present invention described in claim 3, the flood risk value can be derived using a grade based on the amount of water leakage from the target opening, making it possible to easily derive the flood risk value from the existing grade of water leakage.

[0017] The flood risk assessment support device of the present invention described in claim 4 is a flood risk assessment support device described in claim 1 or claim 2, wherein the derivation unit reduces the flood risk value corresponding to the opening through which water flows out by dividing the flood risk value by the number of openings when water that has entered the space flows out from multiple openings provided in the space.

[0018] According to the flood risk assessment support device of the present invention described in claim 4, when water that has entered the space flows out through multiple openings provided in the space, the flood risk value can be divided by the number of openings, thereby reducing the flood risk value corresponding to the opening through which the water flows out, thereby making it possible to more accurately derive the flood risk value.

[0019] The flood risk assessment support device of the present invention described in claim 5 is a flood risk assessment support device described in claim 1 or claim 2, wherein the derivation unit derives the flood risk value for the opening through which water flows out from the space capable of storing flooded water so as to reduce the flood risk value in accordance with the amount of water that can be stored.

[0020] According to the flood risk assessment support device of the present invention described in claim 5, for openings through which water flows out from the above-mentioned space capable of storing flooded water, the flood risk value can be derived more accurately by deriving a value that reduces the flood risk value according to the amount of water that can be stored.

[0021] The flood risk assessment support device of the present invention described in claim 6 is a flood risk assessment support device described in claim 1 or claim 2, wherein the derivation unit derives the flood risk value for the space located on a basement floor as a larger value than for the space located on a ground floor.

[0022] According to the flood risk assessment support device of the present invention described in claim 6, the flood risk value for the above-mentioned space located on the basement floor can be derived as a larger value compared to the above-mentioned space located on the ground floor, thereby making it possible to derive a more accurate flood risk value.

[0023] The flood risk assessment support program of the present invention as set forth in claim 7 causes a computer to execute a process in which at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings is used as the evaluation target space, and for each opening on the path from the outside of the building to the evaluation target space, a flood risk value indicating the level of risk of flooding through the opening is derived, and the derived flood risk value is used to present situation information indicating the status of the flood risk due to the openings provided on the path.

[0024] According to the flood risk assessment support program of the present invention as set forth in claim 7, at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings is set as the evaluation target space, and for each opening on the path from the outside of the building to the evaluation target space, a flood risk value indicating the level of risk of flooding through that opening is derived, and the derived flood risk value is used to present situational information indicating the status of the flood risk due to the openings provided on the above-mentioned path, thereby making it possible to grasp the status of the flood risk due to those openings and, as a result, identify the locations where measures should be taken to prevent flooding into the evaluation target space within the building. [Effects of the Invention]

[0025] As described above, according to the present invention, it is possible to identify locations where measures should be taken to prevent flooding of a space to be evaluated within a building. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a block diagram showing an example of the hardware configuration of a flood risk assessment support device according to an embodiment. [Figure 2] 1 is a block diagram showing an example of the functional configuration of a flood risk assessment support device according to an embodiment. [Figure 3] FIG. 2 is a schematic diagram illustrating an example of a configuration of an evaluation value information database according to the embodiment. [Figure 4] FIG. 2 is a schematic diagram illustrating an example of a configuration of a building information database according to the embodiment. [Figure 5] FIG. 1 is a plan view showing an example of the configuration of a building and site according to an embodiment. [Figure 6] 10 is a flowchart showing an example of the flow of a flood risk assessment support process according to an embodiment. [Figure 7] FIG. 10 is a diagram illustrating an example of an initial information input screen according to the embodiment. [Figure 8] FIG. 10 is a diagram illustrating an example of a situation presentation screen according to the embodiment. [Figure 9]FIG. 10 is a diagram illustrating another example of a situation presentation screen according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0028] First, the configuration of a flood risk assessment support device 10 according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a block diagram showing an example of the hardware configuration of the flood risk assessment support device 10 according to this embodiment. Examples of the flood risk assessment support device 10 include information processing devices such as personal computers and server computers.

[0029] 1, a flood risk assessment support device 10 according to this embodiment includes a CPU (Central Processing Unit) 11 as a processor, memory 12 as a temporary storage area, a non-volatile storage unit 13, an input unit 14 such as a keyboard and mouse, a display unit 15 such as a liquid crystal display, a medium read / write device (R / W) 16, and a communication interface (I / F) unit 18. The CPU 11, memory 12, storage unit 13, input unit 14, display unit 15, medium read / write device 16, and communication I / F unit 18 are connected to one another via a bus B. The medium read / write device 16 reads information written in a recording medium 17 and writes information to the recording medium 17.

[0030] The storage unit 13 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like. A flood risk assessment support program 13A is stored in the storage unit 13 as a storage medium. The flood risk assessment support program 13A is stored (installed) in the storage unit 13 when a recording medium 17 on which the program 13A is written is set in the medium reading and writing device 16, and the medium reading and writing device 16 reads the program 13A from the recording medium 17. The CPU 11 reads the flood risk assessment support program 13A from the storage unit 13 as appropriate, expands it in the memory 12, and sequentially executes the processes of the program 13A.

[0031] Furthermore, an evaluation value information database 13B and a building information database 13C are stored in the storage unit 13. The evaluation value information database 13B and the building information database 13C will be described in detail later.

[0032] Next, the functional configuration of the flood risk assessment support device 10 according to this embodiment will be described with reference to Fig. 2. Fig. 2 is a block diagram showing an example of the functional configuration of the flood risk assessment support device 10 according to this embodiment.

[0033] 2, the flood risk assessment support device 10 according to this embodiment includes a derivation unit 11A and a presentation unit 11B. The CPU 11 of the flood risk assessment support device 10 executes the flood risk assessment support program 13A, thereby functioning as the derivation unit 11A and the presentation unit 11B.

[0034] The derivation unit 11A according to this embodiment defines at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings as an evaluation target space, and derives a flood risk value indicating the level of risk of flooding through each opening that exists on a path from the outside of the building to the evaluation target space. In this embodiment, a value greater than or equal to 0 (zero) and less than or equal to 1 is applied as the flood risk value, but this is not limited to this. For example, a value greater than or equal to 0 (zero) and less than or equal to 10 may also be applied as the flood risk value.

[0035] The presenting unit 11B according to this embodiment then presents situation information indicating the risk of flooding due to openings provided on the route, using the flood risk value derived by the derivation unit 11A. Note that in this embodiment, the situation information is presented by display on the display unit 15, but this is not the only possible form. For example, the situation information may be presented by printing using an image forming device or by audio using an audio playback device.

[0036] Here, the presentation unit 11B in this embodiment presents, as situation information, each opening and space on the above route as a node, adjacent nodes are connected by lines, and a graph is presented in which the openings are associated with corresponding flood risk values.

[0037] Furthermore, the derivation unit 11A according to this embodiment derives the flood risk value using a grade based on the amount of water leakage from the target opening. In this embodiment, the "grade based on water leakage" specified in JIS (Japan Industrial Planning) A 4716 (Flood Prevention Equipment Fixture Components) is used as the grade based on the amount of water leakage, but this is not the only possible configuration. For example, a grade based on the amount of water leakage independently determined by the administrator who manages the flood risk assessment support device 10 may be used as the grade based on the amount of water leakage.

[0038] In this embodiment, a predetermined evaluation value is set for each of the above-mentioned leakage amount classes, and the evaluation value corresponding to the corresponding class is applied as the flood risk value for each opening to derive the flood risk value, but this is not the only possible form.For example, in addition to the above-mentioned classes, parameters that affect flooding into a space, such as the vertical installation position of the opening and its area, may also be used to derive the flood risk value so that the greater the amount of flooding into the target space, the greater the value.

[0039] Furthermore, in the derivation unit 11A according to the present embodiment, when water that has entered the space flows out through multiple openings provided in the space, the derivation unit 11A reduces the flood risk value corresponding to the opening from which the water flows by dividing the flood risk value by the number of the openings. For example, when water flows in through one opening and flows out through two openings in the same room, the amount of water that flows out is reduced, so the flood risk value of each opening is divided by two. In this way, in the present embodiment, when water flows out through multiple openings in the target space, the flood risk value corresponding to the opening from which the water flows is reduced by dividing the flood risk value by the number of the openings. However, this is not a limitation. For example, the flood risk value may be reduced for each of the multiple openings according to parameters that affect the amount of water that flows out, such as the vertical installation position of the multiple openings, the area, and the grade based on the amount of water leakage.

[0040] Furthermore, the derivation unit 11A according to this embodiment derives a flood risk value for an opening through which water from the space capable of storing flooded water flows out, so as to reduce the flood risk value in accordance with the amount of water that can be stored. In this embodiment, the flood risk value is reduced by subtracting an adjustment value, which has an upper limit of the maximum flood risk value (1 in this embodiment) and which increases as the amount of water that can be stored in the target space increases, from the flood risk value of the opening through which water from the space flows out, but this is not limited to this. For example, for an opening through which water from a space capable of storing water flows out, the flood risk value may be multiplied by a predetermined constant less than 1.

[0041] Furthermore, the derivation unit 11A according to this embodiment derives a flood risk value for the above-mentioned spaces located on basement floors as a value that is larger than that for the above-mentioned spaces located on ground floors. In this embodiment, the flood risk value for the spaces located on basement floors is twice the value of the flood risk value derived for the spaces located on ground floors, but this is not limited to this. For example, the flood risk value may be set to a larger value as the number of basement floors increases.

[0042] In the following, we will explain the case where gates, doors, and windows are used as the openings, but this is not limited to this form, and it is also possible to use only doors and windows as the openings, or to use other types of openings such as air intakes and exhaust vents as the openings.

[0043] Next, the evaluation value information database 13B according to this embodiment will be described with reference to Fig. 3. Fig. 3 is a schematic diagram showing an example of the configuration of the evaluation value information database 13B according to this embodiment.

[0044] As shown in FIG. 3, the evaluation value information database 13B according to this embodiment stores information on the grade, the amount of leakage water, and the evaluation value in association with each other.

[0045] The above-mentioned grades are information that indicates the grade itself based on the amount of water leakage described above, and the amount of water leakage is calculated based on the water pressure per unit area (1m) per unit time (1 hour) at the opening of the corresponding grade. 2 The leakage volume (m 3 / h·m 2 ), and the evaluation value is information indicating the evaluation value itself.

[0046] In the example shown in Figure 3, for example, an opening with a grade of Ws-1 has a leakage rate of 0.05 (m 3 / h·m 2 ) and 0.2 (m 3 / h·m 2) or less, which means that the opening in question will be assigned a standard flood risk value of 1.0.

[0047] As described above, in this embodiment, the flood risk value applied to spaces located on basement floors is twice the flood risk value derived for spaces located on ground floors. Therefore, focusing only on this point, for example, if no special flood prevention measures have been taken for the door of a stairwell leading to the basement, the flood risk value will be 1, whereas if the door is rated as Ws-3, the flood risk value will be 0.5 (= 0.25 x 2, which is the evaluation value for Ws-3).

[0048] The configuration of the evaluation value information database 13B is not limited to that shown in FIG. 3, and for example, the amount of water leakage is not necessarily required.

[0049] Next, the building information database 13C according to this embodiment will be described with reference to Fig. 4. Fig. 4 is a schematic diagram showing an example of the configuration of the building information database 13C according to this embodiment.

[0050] As shown in FIG. 4, the building information database 13C according to this embodiment stores building IDs (Identifications) and various pieces of building information in association with each other.

[0051] The building ID is information that is assigned in advance to each building in order to individually identify the building for which the flood risk assessment support device 10 derives a flood risk value, and the building information is information that indicates the corresponding building and the configuration of the building's site.

[0052] In this embodiment, information indicating a three-dimensional model created by BIM (Building Information Modeling) is applied as building information, but the present invention is not limited to this. For example, a three-dimensional model created by 3D CAD (Computer Aided Design) may be applied as building information.

[0053] In the building information according to this embodiment, for each opening used in the corresponding building, a grade based on the amount of water leakage from the corresponding opening is stored as attribute information. In addition, in the building information according to this embodiment, if a space capable of storing water exists in the corresponding building, the amount of water that can be stored in the space is stored as attribute information. However, this is not limited to this form, and for example, information indicating the grade and the amount of water that can be stored may be registered separately from the 3D model.

[0054] FIG. 5 shows a plan view illustrating an example of the configuration of the building 30 and the site 40 according to this embodiment.

[0055] As shown in Figure 5, building 30 has its site 40 separated from the outside by a fence 50, and a space S01 exists between building 30 and fence 50. One gate G01 and one door D01 are provided on fence 50 of site 40, and space S01 can be accessed from the outside of site 40 via gate G01 and door D01.

[0056] On the other hand, the building 30 has an exterior wall 32, and its interior is divided by interior walls 34 into five spaces (rooms in this embodiment) S02 to S06.

[0057] Space S02 is provided with a door D02 and a window W01 to allow access between space S02 and space S01, and space S03 is provided with a window W02 to allow access between space S01 and space S03, and a door D03 to allow access between space S02 and space S03.

[0058] Meanwhile, the three spaces S04, S05, and S06 in the building 30 are arranged side by side on the opposite side of the space S03 from the space S02. The space S04 is provided with a door D05 to allow access between the space S04 and the space S03, the space S05 is provided with a door D06 to allow access between the space S03, and the space S06 is provided with a door D07 to allow access between the space S03. Furthermore, the space S06 is also provided with a door D04 to allow access between the space S06 and the space S01.

[0059] As described above, the three-dimensional model (building information) corresponding to the building 30 including this site 40 includes, as attribute information, information indicating the grade of the above-mentioned water leakage amount for each of the gate G01, windows W01, W02, and doors D01 to D07, and the amount of water that can be stored in the water-storable space.

[0060] Next, the operation of the flood risk assessment support device 10 according to this embodiment will be described with reference to Figures 6 to 9. When a user inputs an instruction to start the execution of a flood risk assessment support program 13A via the input unit 14, the CPU 11 of the flood risk assessment support device 10 executes the program 13A, thereby executing the flood risk assessment support process shown in Figure 6. Note that, in order to avoid confusion, the case will be described here in which an evaluation value information database 13B and a building information database 13C have already been constructed.

[0061] In step 100 of FIG. 6, the CPU 11 controls the display unit 15 to display an initial information input screen having a predetermined configuration, and in step 102, the CPU 11 waits until predetermined information is input.

[0062] An example of an initial information input screen according to this embodiment is shown in Fig. 7. As shown in Fig. 7, the initial information input screen according to this embodiment displays a message prompting the user to specify a building to be evaluated (hereinafter referred to as "assessment target building") and a space in the building to be evaluated (hereinafter referred to as "assessment target space"). Also displayed on this initial information input screen are an input area 15A for inputting the building ID of the assessment target building and an input area 15B for inputting the assessment target space.

[0063] 7 is displayed on the display unit 15, the user inputs the building ID of the building to be evaluated in the input area 15A via the input unit 14, inputs the space to be evaluated in the input area 15B, and then presses the end button 15D. In response to this, the determination in step 102 is affirmative, and the process proceeds to step 104.

[0064] In step 104, the CPU 11 reads out and acquires the building information corresponding to the building ID input on the initial information input screen from the building information database 13C.

[0065] In step 106, the CPU 11 identifies the leakage rate grade indicated by the attribute information for all openings (hereinafter referred to as "openings to be treated") provided in the building indicated by the read building information, and reads out the evaluation values ​​corresponding to all the identified grades from the evaluation value information database 13B.

[0066] In step 108, the CPU 11 uses the read evaluation values ​​to derive flood risk values ​​for all the openings to be treated as described above.

[0067] In step 110, the CPU 11 creates a graph as described above using the read building information and the derived flood risk value. Then, the CPU 11 controls the display unit 15 to display a situation presentation screen with a predetermined configuration using the created graph, and in step 112, the CPU 11 waits until predetermined information is input.

[0068] FIG. 8 shows an example of a situation presentation screen according to this embodiment. As shown in FIG. 8, the situation presentation screen according to this embodiment displays the above-described graph 15C along with a message prompting the user to confirm the flood risk value of the openings to be processed in the building to be evaluated. Therefore, by referring to graph 15C, the user can understand the flood risk value of each opening leading to each space in the building to be evaluated. As a result, the user can understand, for each space, which openings need to be subjected to which flood prevention measures in order to reduce the risk of flooding.

[0069] For example, if the situation presentation screen is as shown in FIG. 8, the user can grasp the following from the situation presentation screen.

[0070] - Unless flood protection measures are taken not only for door D01 but also for gate G01, flooding into space S01 cannot be prevented.

[0071] Unless window W02 is treated, flooding into space S03 cannot be prevented. Unless window W02 is treated, flood prevention measures for door D02, window W01, and door D03 will be ineffective.

[0072] Even if measures are taken only for door D04, there will be no effect in preventing flooding if measures for doors D05, D06, and D07 are insufficient. To prevent flooding in spaces S04, S05, and S06, it is necessary to take sufficient measures for space S03.

[0073] Based on these findings, the following measures can be proposed:

[0074] By replacing window W02 with a window equivalent to grade Ws-3 (evaluation value 0.25), the risk of flooding into space S03 can be reduced, making it possible to take measures to prevent flooding into space S06.

[0075] If flooding in areas other than space S06 will not cause any problems, flood prevention measures can be taken by replacing door D07 with a door equivalent to grade Ws-5 (evaluation value 0.0625).

[0076] 8 is displayed on the display unit 15, the user can refer to the graph 15C to check the flood risk value for each of the target openings in the building to be evaluated, and then select the end button 15D via the input unit 14. In response to this, the determination in step 112 is affirmative, and the flood risk assessment support process is terminated.

[0077] Note that, while the example shown in Fig. 8 illustrates a case where the situation presentation screen is displayed without any emphasis on graph 15C, the present invention is not limited to this form. For example, as shown in Fig. 9, if there are multiple parallel flooding routes from outside the site to the space being evaluated, graph 15C may be displayed with emphasis on the route with the higher flood risk value among the multiple flooding routes. This makes it possible to visually grasp which of the flooding routes leading to the space being evaluated is weak, thereby making it easier to determine the priority of flood prevention measures, etc.

[0078] As described above, according to this embodiment, at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings is set as the evaluation target space, and for each opening present on the path from the outside of the building to the evaluation target space, a flood risk value indicating the level of risk of flooding through the opening is derived, and the derived flood risk value is used to present situation information indicating the status of flood risk due to the openings provided on the path. Therefore, by being able to grasp the status of flood risk due to the openings, it is possible to identify locations within the building where measures should be taken to prevent flooding into the evaluation target space.

[0079] Furthermore, according to this embodiment, the situation information is presented as a graph in which each opening and space on the route is treated as a node, adjacent nodes are connected by lines, and the openings are associated with corresponding flood risk values, making it easier to grasp the flood risk situation.

[0080] Furthermore, according to this embodiment, the flood risk value is derived using a grade based on the amount of water leakage from the target opening. Therefore, the flood risk value can be easily derived from the existing grade of water leakage.

[0081] Furthermore, according to this embodiment, when water that has entered the space flows out through multiple openings in the space, the flood risk value is divided by the number of openings, thereby reducing the flood risk value corresponding to the opening through which the water flows out. This allows for a more accurate calculation of the flood risk value.

[0082] Furthermore, according to this embodiment, for the openings through which water flows out of the space that can store flooded water, the flood risk value is calculated so as to reduce the flood risk value according to the amount of water that can be stored, thereby enabling a more accurate flood risk value to be calculated.

[0083] Furthermore, according to this embodiment, the flood risk value for the above-mentioned spaces located on the basement floor is derived as a larger value than that for the above-mentioned spaces located on the ground floor, thereby enabling a more accurate flood risk value to be derived.

[0084] It goes without saying that the configurations of the evaluation value information database 13B and the building information database 13C applied in the above embodiment are merely examples, and are not limited to the examples.

[0085] Furthermore, the flow of the flood risk assessment support process applied in the above embodiment is also an example, and is not limited to the example.

[0086] Furthermore, in the above embodiment, for example, the following various processors can be used as the hardware structure of the processing unit that executes each process of the derivation unit 11A and the presentation unit 11B. The above various processors include, as described above, a CPU, which is a general-purpose processor that executes software (programs) and functions as a processing unit, as well as dedicated electrical circuits that are processors having a circuit configuration specifically designed to execute specific processes, such as a programmable logic device (PLD), which is a processor whose circuit configuration can be changed after manufacture, such as an FPGA (Field-Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit).

[0087] The processing unit may be configured with one of these various processors, or may be configured with a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs, or a combination of a CPU and an FPGA).The processing unit may also be configured with a single processor.

[0088] Examples of configuring a processing unit with a single processor include, first, a form in which one processor is configured with a combination of one or more CPUs and software, and this processor functions as the processing unit, as typified by computers such as client and server. Second, a form in which a processor is used to realize the functions of the entire system, including the processing unit, on a single IC (Integrated Circuit) chip, as typified by systems on chips (SoCs). In this way, the processing unit is configured using one or more of the above-mentioned various processors as a hardware structure.

[0089] Furthermore, more specifically, the hardware structure of these various processors can be an electric circuit that combines circuit elements such as semiconductor elements. [Explanation of symbols]

[0090] 10. Flood risk assessment support device 11 CPU 11A Derivation part 11B Presentation section 12 Memory 13 Storage section 13A Flood Risk Assessment Support Program 13B Evaluation Value Information Database 13C Building Information Database 14 Input section 15 Display section 15A input range 15B Input area 15C graph 15D Exit button 16 Media reading and writing device 17 Recording Media 18 Communication I / F section 30 Buildings 32 Exterior Wall 34 Inner wall 40 premises 50 Fence D01~D07 Doors G01 gate S01~S06 Space W01~W02 windows

Claims

1. a derivation unit that defines at least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings as an evaluation target space, and derives a flood risk value that indicates the level of risk of flooding through each opening that exists on a path from the outside of the building to the evaluation target space; a presentation unit that presents situation information indicating the status of the risk of flooding due to openings provided on the route, using the flood risk value derived by the derivation unit; A flood risk assessment support device equipped with

2. the presentation unit presents, as the situation information, a graph in which each of the openings and the spaces present on the route is represented as a node, adjacent nodes are connected by lines, and the openings are associated with the corresponding flood risk values. The flood risk assessment support device according to claim 1.

3. The derivation unit derives the flood risk value using a grade based on the amount of water leakage from the target opening. The flood risk assessment support device according to claim 1 or 2.

4. When the water that has entered the space flows out from a plurality of the openings provided in the space, the derivation unit reduces the water inundation risk value corresponding to the opening through which the water flows out by dividing the water inundation risk value by the number of the openings. The flood risk assessment support device according to claim 1 or 2.

5. The outlet unit is configured to outlet the flooded water from the opening through which the flooded water flows out so as to reduce the flood risk value according to the amount of water that can be stored. The flood risk assessment support device according to claim 1 or 2.

6. The derivation unit derives the flood risk value for the space located on a basement floor as a larger value than that for the space located on a ground floor. The flood risk assessment support device according to claim 1 or 2.

7. At least one of a plurality of spaces provided in a building and connected to adjacent spaces via openings is set as an evaluation target space, and for each opening that exists on a path from the outside of the building to the evaluation target space, a flood risk value that indicates the level of risk of flooding through the opening is derived; Using the derived flood risk value, present situation information indicating the flood risk status due to openings provided on the route. A flood risk assessment support program that runs the processing on a computer.

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