JP5597656B2 - Tsunami protection system - Google Patents

Description

  Embodiments of the present invention relate to a tsunami protection system.

  Japan is one of the world's leading earthquake countries and has been repeatedly severely damaged by large tsunamis. Historically, large tsunamis have occurred due to large plate-type earthquakes that occur in the waters around Japan, such as the 1605 Keicho Great Earthquake and the 1896 Meiji Sanriku Earthquake. Especially in the 2011 off the Pacific coast of Tohoku Earthquake, modern facilities were severely damaged by the tsunami, and plants built on the coastal areas such as power plants were damaged, greatly affecting power supply and production activities.

  For this reason, there is a need for tsunami countermeasures to minimize damage to plants built in coastal areas such as power plants against the tsunami. Once a huge earthquake occurs in the sea area near the coast, a large tsunami accompanying the earthquake reaches the coast several minutes to several tens of minutes after the occurrence of the earthquake. The large tsunami repeatedly rushes after the first wave arrives, leaving the coastal area inaccessible for several hours or more. Therefore, if the tsunami approaches or arrives, it will not be able to approach the coastal area, so at least some of the facilities in the plant will not be able to operate due to inundation etc. for several hours after the earthquake occurs, and maintenance personnel will be in charge of each facility. May continue to be inaccessible.

  In addition, in the emergency closure control system of waterproof equipment, the technique of the system which closes automatically the sluice installed in the seawall etc. is disclosed.

JP 2007-332534 A

  Even in plants such as power plants, the waterproof doors of each building in the plant are closed or closed within a limited time from when tsunami information is detected until the tsunami reaches the plant site. It is necessary to take measures to protect against tsunamis in order to minimize damage to the plant by closing the vents with waterproof covers.

  In addition, in plants such as power plants, there are facilities such as cooling facilities that must continue operation of the plant even after an earthquake occurs. In such a case, even when a small-scale earthquake or tsunami is activated, starting all the protective devices in the plant at all times may cause problems in the operation of the plant such as a power plant. Therefore, it is necessary to determine an appropriate protection range.

  As described above, there is a need for a tsunami protection system that can switch a plant such as a power plant from a normal operation state to a protection system that suppresses tsunami damage within a limited time until the arrival of the tsunami.

  A problem to be solved by an embodiment of the present invention is to provide a tsunami protection system that detects the occurrence of a tsunami and switches to a protection system for suppressing damage from tsunami in a plant.

  In order to solve the above-described problem, the tsunami protection system of the embodiment is a tsunami protection system that protects a plant having one or a plurality of buildings, facilities, and a facility including a protection facility for protecting them from the tsunami from the tsunami. . The tsunami protection system includes at least a tsunami information receiving unit that receives tsunami information including a predicted height of a tsunami caused by the occurrence of an earthquake, and each area in which the plant is identifiable by altitude and geographical range. At least the elevation, first facility identification information indicating the identification of the facility above the elevation, the presence or absence of a structure that can be an inundation path between the outside of the plant or another facility, and the elevation A facility information database that stores facility information including second facility identification information indicating a facility that can be a submerged inundation route and the inundation route; and at least the first or second facility identification information for each area; A protective device for storing protective device information including information on the protective device provided in the facility corresponding to the first or second facility identification information Obtaining the predicted height of the tsunami reaching the plant from the information database and the tsunami information, and based on the facility information stored in the facility information database, the flooded area of the plant with respect to the predicted height of the tsunami Based on the determination result of the flooded area determined by the flooded area determination unit and the flooded area determination unit, it is specified which one of the protection devices is activated from the protection device information stored in the protection device information database And a protective device control unit that transmits a control signal for starting to the specified protective device.

  According to the tsunami protection system of the embodiment according to the present invention, it is possible to detect the occurrence of a tsunami and switch to a protection system for suppressing tsunami damage to a plant.

The elevation view which shows the example of a structure of the whole plant to which 1st Embodiment of the tsunami protection system which concerns on this invention is applied. The block diagram which shows the structure of the tsunami protection system of 1st Embodiment which concerns on this invention. The figure which shows the structural example of the facility information database with which the tsunami protection system of 1st Embodiment is provided. The figure which shows the structural example of the protective device information database with which the tsunami protection system of 1st Embodiment is provided. The figure which shows an example of the inundation area determination process of the tsunami protection system of 1st Embodiment. The flowchart which shows the tsunami protection processing flow of the tsunami protection system of 1st Embodiment. The flowchart which shows the inundation area determination processing flow of the tsunami protection system of 1st Embodiment. FIG. 8 is an inundation area determination process flow of the tsunami protection system according to the first embodiment, showing a flow subsequent to the flow of FIG. 7. The elevation view which shows the structural example of the whole plant to which 2nd Embodiment of the tsunami protection system which concerns on this invention is applied. The block diagram which shows the structure of the tsunami protection system of 2nd Embodiment which concerns on this invention.

  Hereinafter, a tsunami protection system according to an embodiment of the present invention will be specifically described with reference to the drawings. Here, the same or similar parts are denoted by common reference numerals, and redundant description is omitted. Each of the following embodiments described here will be described by taking an example of a plant installed near the coast.

[First Embodiment]
Hereinafter, a first embodiment of a tsunami protection system according to the present invention will be described with reference to FIGS. 1 to 8.

  First, the first embodiment will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is an elevation view showing a configuration example of the entire plant to which the tsunami protection system of the first embodiment is applied, and FIG. 2 is a block diagram showing a configuration of the tsunami protection system of the first embodiment. is there.

  The tsunami protection system according to the present embodiment protects a plant having a facility including one or a plurality of buildings, equipment, structures of equipment, and protection equipment for protecting them from tsunami. Therefore, in the tsunami protection system of the present embodiment, based on the tsunami information, the tsunami height reaching the plant is predicted or the information is received, the flooded area in the area in the plant is predicted, and the protective device Send a signal to activate.

  Within the plant, a number of facilities are classified and managed in advance according to the location (location conditions) where the facilities are located, the type and form of the facilities, and the like. For example, the inside of a plant is classified as an area according to the altitude of the place where the facility is located as described below.

  For example, the plant shown in FIG. 1 is located near the coastline. In the plant, as shown in FIG. 1, there are a plurality of areas divided for each altitude. The plurality of areas are, for example, area A located at altitude h1, area B located at altitude h2, area C located at altitude h3, area D located at altitude h4, and the like.

  In addition, as shown in FIG. 1, the breakwater 13 is provided near the coast near the plant, for example, and the height of the breakwater 13 is higher than the sea level (for example, altitude h0) at high tide, such as a tsunami up to the altitude h1. It is provided so that the wave can be prevented.

  The plant shown in FIG. 1 has one or a plurality of facilities for each area in the plant. In the tsunami protection system according to the first embodiment, for example, the location of the facility, the elevation of the location, the height of the building, Facility information including the underground depth of the underground structure and underground pipes straddling the areas is stored in advance in the storage device (facility information database 21).

  In the tsunami protection system of the present embodiment, as shown in FIG. 1, the area division is determined in advance based on the altitude at which each facility is installed. In addition, if there are underground structures in each facility, in order to consider the inundation route through the underground structure, the facilities that will become inundation routes are preliminarily stored as data for each facility. Register in the information database 21. In addition, in FIG. 1, the division of the area is shown in an example in which one area is shown at one reference altitude with respect to the longitudinal section of the plant in order to simplify the description.

  Specifically, as shown in FIG. 2, the tsunami protection system according to the first embodiment includes a tsunami information receiving unit 1, a facility information database 21, a protective device information database 22, a flooded area determination unit 2, a determination result processing unit. 3, a protective device control unit 4, a display device 5 and an alarm device 6 are provided.

  The tsunami protection system of this embodiment is a tsunami information including the height and time of arrival of a tsunami caused by an earthquake when an earthquake occurs around a plant such as a power plant or when a large-scale earthquake occurs. Need.

  The tsunami information receiving unit 1 receives tsunami information including at least information on the predicted height of the tsunami from a system outside the plant. The tsunami information may be measurement data collected from instruments inside and outside the plant, or may be data transmitted from a means for predicting a combination of such information and measurement data.

  The facility information database 21 divides the facilities in the plant into areas for specifying the altitude and geographical range in advance, and for each divided area, the altitude where the area is located, the facility ID (Identification) for identifying the facility, the underground An underground structure ID for indicating the presence or absence of a structure and the like, a contact facility ID for identifying which facility and route this underground structure passes through, and the area when there is an underground structure Stores facility information including data such as underground depth. Such information is prepared in advance and stored in the facility information database 21.

  The facility ID, the underground structure ID, and the communication side facility ID are facility identification information, and data is given in advance so that each facility can be identified. The facility identification information is classified as, for example, first facility identification information and second facility identification information. The first facility identification information is, for example, an ID (facility ID) assigned to a facility at an altitude or higher in a target area such as a building. The second facility identification information is, for example, an ID (referred to as an underground structure ID) given to an underground structure lower than the altitude in the target area other than the first facility identification information. The contact-side facility ID is the first facility identification information or the second facility identification information. That is, the facility ID or the underground structure ID.

  As described above, the facility information database 21 stores information including elevation, first facility identification information, second facility identification information, and the like for each area.

  In the tsunami protection system according to the present embodiment, the facility information stored in the facility information database 21 is used to classify the area, its elevation, the facilities in the area (building, underground structure, underground passage, etc.) It is possible to acquire information on the structure that becomes the inundation path between the areas.

  The protective device information database 22 stores protective device information including information on the presence or absence of protective devices provided in areas and facilities. These pieces of information are prepared in advance and stored in the protective device information database 22.

  As for the database configuration examples of the facility information database 21 and the protective device information database 22 shown in FIG. 2, an example of the facility information database 21A is shown in FIG. 3, and an example of the protective device information database 22A is shown in FIG.

  Note that the facility information database 21A shown in FIG. 3 stores facility information about the plant shown in FIG. 1 in advance. Further, the protective device information database 22A shown in FIG. 4 stores the protective device information for the plant shown in FIG. 1 in advance.

  Hereinafter, the contents of the database shown in FIGS. 3 and 4 will be described with reference to FIGS. 1 and 2.

  In the facility information database 21A shown in FIG. 3, the elevation, the facility ID indicating the facility (building, underground structure, underground passage, etc.) in the area, the inundation route in the area or between the plurality of areas, for each area division The facility information including the underground structure ID to be used, the contact facility ID on the contact (opposite) side of the underground structure, the underground depth of the underground structure (depth from the ground of the area), and the like are stored. Yes.

  In the tsunami protection system, as shown in FIG. For example, the plant shown in FIG. 1 is divided into altitudes h1, h2, h3, and h4 as areas A, B, C, and D as areas at the respective altitudes. In FIG. 1, the relationship of elevation h1 <elevation h2 <elevation h3 <altitude h4 is established.

  As shown in FIG. 1, there is a facility 9 in the area A located at the lowest altitude h1 in the plant. The facility 9 includes a building 91, an underground structure 93 and a building 92 under the building 91.

  Similarly, there is a facility 10 in the area B located at the altitude h2. The facility 10 includes a building 101, a building 102, an underground structure 104 provided under the building 102, and a building 103.

  Further, there is a facility 11 in the area C located at the altitude h3. The facility 11 has a building 111 and a building 112. Furthermore, in the plant shown in FIG. 1, an area D located at an altitude h4 on the highest ground has a facility 12, and the facility 12 has a building 121.

  As shown in FIG. 3, such facility information is given a facility ID in advance so that it can be identified for each building or facility of the facility. For example, the first facility identification information such as facility ID = facility A1 is assigned to the building 91 in the area A shown in FIG. 1, and the facility ID = facility A2 is assigned to the building 92 in advance.

  The identification information of these facilities and the like may be used in association with database data such as architectural design provided in an external system other than the tsunami protection system of this embodiment, for example. In that case, for example, the risk of inundation as described later can be determined according to the height of the building, the number of floors of the building, and the like.

  In the present tsunami protection system, it is possible to determine, based on these facility IDs, that the buildings and facilities of each facility belonging to each area in the plant can be identified.

  In the facility information database 21A shown in FIG. 3, for example, the second facility identification information is given to the underground structure 93 shown in FIG. 1 such as the underground structure ID = underground UA1, and the facility ID of the building 91 = facility A1. A predetermined association with the first facility identification information is made and given. Similarly, the second facility identification information is given to the underground structure 104 like the underground UB2.

  In addition, the inundation area determination unit 2 determines that the underground structure 93 and the underground structure 104 are connected to each other based on the “contact facility ID” information (first or second facility identification information) in the facility information database 21A. It is possible to determine that this is an inundation route that is likely to be infiltrated via 94. The "contact side facility ID" of these underground structures straddles an external structure at a position (elevation) lower than the altitude at which the area is divided, between the outside and the area, or between other areas. Drainage channels and water supply channels are also targeted.

  The protective device information database 22A shown in FIG. 4 stores, for each area division, protective device information including a facility ID indicating a facility in the area, an underground structure ID, and information on the protective device provided in the facility. Has been.

  For example, as shown in FIG. 4, the facility corresponding to the facility ID “facility A1” in area A is registered in advance as having the protective device “gate a1”. In addition, the facility corresponding to the facility ID “underground UA1” in area A is registered in advance as having the protective device “waterproof lid ua1”. Similarly, facilities corresponding to other facility IDs (including underground structure IDs) are registered in advance as shown in FIG.

  The inundation area determination unit 2 acquires the predicted height of the tsunami from the tsunami information received by the tsunami information reception unit 1, and based on the facility information stored in the facility information database 21, the inundation area for the predicted height of the tsunami And determine the risk of inundation of facilities in the plant.

  Hereinafter, an example of the flooded area determination process of the tsunami protection system according to the first embodiment will be described with reference to FIG. FIG. 5 shows an example of the flooded area determination process when the predicted height of the tsunami is higher than the altitude h1 and lower than the altitude h2.

  First, the flooded area determination unit 2 determines the flooded area in the plant based on the tsunami information and the facility information. Specifically, the flooded area determination unit 2 predicts the height of the tsunami that arrives from the tsunami information or acquires the predicted height of the tsunami, and uses this as the predicted height of the tsunami from the facility information as follows: Determine the flooded area. The plant to be protected is assumed to be the plant shown in FIG.

  In FIG. 1, when the tsunami height predicted from the tsunami information is higher than the altitude h1 and lower than the altitude h2, the inundation area determination unit 2 determines the facility 9 in the area A located at the altitude h1 based on the facility information database 21A. It is determined that building 91 (facility ID = facility A1) and building 92 (also facility A2) are inundated.

  For example, when the predicted height of the tsunami reaching the plant obtained from the tsunami information is higher than the altitude h1 and lower than the altitude h2, as shown in FIG. From the facility information stored in 21A, the area A is determined as the flooded area.

  Next, the inundation area determination unit 2 determines the risk of inundation for the determined inundation area based on facility information including information on facilities in the area and inundation routes through underground structures in the facility.

  Specifically, the flooded area determination unit 2 determines whether or not there is an underground structure serving as a flooded path for the area A determined as the flooded area based on the facility information stored in the facility information database 21A. The flooded area determination unit 2 identifies the underground structure 93 with the facility ID = the facility A1 to the facility ID = the underground UA1. Similarly, the flooded area determination unit 2 identifies the communication side facility ID = underground UB2 (underground structure 104) as the other side of the identified underground structure 93 serving as the flooded route. Similarly, the flooded area determination unit 2 searches for flooded paths that pass between facilities in different areas for the facility 9 in the determined flooded area, and determines the risk of flooding in other facilities.

  As shown in FIG. 5, the flooded area determination unit 2 determines the flooded path by referring to the facility information stored in the facility information database 21 </ b> A. Further, the inundation area determination unit 2 refers to the facility information stored in the facility information database 21 </ b> A in the same manner as the underground depth Z <b> 1 of the underground structure 93 and the underground depth Z <b> 2 of the underground structure 104. Judgment by.

  For example, when there is a relationship such as Z2> = h2-h1 + Z1, the flooded area determination unit 2 can determine how much flooding risk the underground structure 104 has. Thus, the flooded area determination unit 2 determines that the underground structure 104 has a risk of flooding.

  As described above, the flooded area determination unit 2 determines the risk of flooding when the area A is flooded and there is a possibility that the area B is also partially flooded (facility B2: “building 102”). .

  As described above, the flooded area determination unit 2 determines that the underground structure 104 has a risk of flooding through the flooded path (underground communication path 94). That is, even if the facility 10 in the area B is higher than the facility 9 in the area A shown in FIG. 1, the area B has an inundation path through which seawater enters through the underground structure 93 of the building 91 in the area A. The inundation area determination unit 2 determines the degree of risk that the underground structure 104 in the facility 10 in the area B is at the same level as the area A as the degree of inundation. The risk level may be classified into levels, for example, as half flooded, partially flooded, submerged, or the like.

  Next, the flooded area determination unit 2 refers to the protection device information stored in the protection device information database 22A based on the determined risk of flooding, and the facility ID of the area A = facility A1, underground UA1, and facility A2 And a protection device corresponding to the underground UB2 are specified as activation targets. That is, as shown in FIG. 5, the flooded area determination unit 2 specifies, for example, the gate a1, the waterproof lid ua1, the waterproof door a2, and the waterproof lid ub2 as activation targets of the protective device.

  As described above with reference to the specific examples of FIGS. 1 and 5, when the flooded area determination unit 2 receives the tsunami information, the flooded area (flooding risk) using the facility information stored in the facility information database 21 </ b> A. Determine. Further, the inundation area determination unit 2 specifies the protection device (startup target) of the facility to be protected from the tsunami using the determination result and the protection device information stored in the protection device information database 22A. Then, the flooded area determination unit 2 notifies the determination result processing unit 3 of the determination result.

  The determination result processing unit 3 converts the determination result by the flooded area determination unit 2 into data that can be received by the output device such as the display device 5 and the alarm device 6 and the protection device control unit 4 and the like, and the converted data respectively. To the device.

  For example, the determination result processing unit 3 displays display information or sound about prediction information about the height and arrival time of the tsunami that reaches the plant, the flooded area determined according to the height of the tsunami, and the execution status of the protective device. Information is output to an output device.

  In the configuration example of FIG. 2, the determination result processing unit 3 converts the data into data that can be received by the output device such as the display device 5 and the alarm device 6 and the protection device control unit 4. The area determination unit 2 may have a function unit of the determination result processing unit 3.

  The protective device control unit 4 transmits control information including an activation command to the protective device based on the information on the protective device to be activated sent from the determination result processing unit 3. For this purpose, communication means such as wireless or wired communication is provided between the protective device control unit 4 and each protective device. The protective device control unit 4 may have a means for switching an alternative target facility installed in the plant to an alternative facility. In this case, the flooded area determination unit 2 instructs the protection device control unit 4 to switch to the alternative facility when it is determined that there is an area having the alternative target facility in the flooded area.

  As described above, the inundation area determination unit 2 determines the risk of inundation of inundated areas and facilities that are likely to be inundated based on the predicted height of the tsunami reaching the plant based on the tsunami information and facility information. To do. Information on the determined flooded area and the like is notified to plant maintenance personnel by the display device 5 and the alarm device 6 via the protective device control unit 4.

  Further, the flooded area determination unit 2 identifies the protection device to be activated based on the determination result of the flooded area and the like and the protection device information stored in the protection device information database 22.

  The display device 5 is an output device for displaying information including tsunami information handled by the tsunami protection system, a flooded area determination result, a protection device to be activated, and the like. For example, there are a liquid crystal monitor, a CRT display, a large panel, and the like, and maintenance personnel can check the operation status of the tsunami protection system via the display device 5.

  The alarm device 6 is an output device for making the contents of emergency information such as the tsunami information and the determination result of the flooded area in the plant well known to maintenance personnel and the like via voice and alarm sound.

  Further, as a configuration (not shown) of the tsunami protection system, a maintenance staff may have a keyboard, a mouse, a touch panel, etc. as operation means for confirming the output information described above. In addition, a configuration for receiving tsunami information transmitted from the outside via communication means (wireless, wired) or the like, or a configuration for transferring the output information described above to the outside may be provided.

  The protective device (not shown) is a flood prevention device for protecting facilities in a flooded area from a tsunami or suppressing damage such as flooding. When the protective device receives the control signal from the protective device controller 4, the protective device prevents inundation of facilities and equipment provided for each area in the plant based on the control signal. For example, the inundation prevention device is a waterproof door provided to block the inflow of seawater at the entrance and the entrance of the building and withstand the tsunami wave force and the impact force of drifting objects, vents and water supply / drainage ports in the facility And activate a waterproof lid to block the entrance to underground structures. Further, for example, a device that prevents the inflow of seawater by dividing a space near the seawater entrance and increasing the air pressure in the partitioned space may be used.

  Further, the protective device may include a system switching device to an alternative facility having a temporary replacement capability of the facility installed in the flooded area. Further, such an alternative facility is prepared on a hill where damage from the tsunami does not reach, and is switched to, for example, the system of the alternative facility by the system switching device when or before the tsunami strikes.

  Specifically, the plant has, for example, a regular power supply facility and an emergency power supply facility. For example, in the plant shown in FIG. 1, it is assumed that the regular power supply facility is in the building 102 in the area B and the emergency power supply facility is in the building 121 in the area D.

  The system switching device to an alternative facility is a device that switches a system that needs to be operated continuously to stop the plant after an earthquake to an alternative facility that temporarily performs the same function. For example, when the normal power supply facility in the building 102 in the area B with a low altitude is cut off from the outside due to the operation of the inundation prevention device, the system switching device to the alternative facility becomes the power supply system in the plant. Is switched to an emergency power supply facility installed in the building 121 on the hill (area D).

  In the tsunami protection system of the present embodiment, the configuration provided with the protection device is not shown in FIG. 1, but the configuration provided with the protection device may be used as another embodiment of the tsunami protection system. The tsunami protection system of the present embodiment may be provided in a safest place from the tsunami in the plant, for example, on a hill (area D), or may be provided outside the plant. Further, the system may be provided inside and outside the plant and operated as a redundant system.

  Next, FIGS. 6 to 8 show a tsunami protection processing flow in the tsunami protection system of the first embodiment. In particular, FIG. 6 shows the entire tsunami protection process flow, and FIGS. 7 and 8 show the flooded area determination process flow. First, the contents of the tsunami protection process flow shown in FIG. 6 will be described with reference to FIG.

  When the tsunami protection process is started, the tsunami information receiving unit 1 confirms whether or not tsunami information has been received from an external system (step S1). If the tsunami information has not been received (No in step S1), the reception status is continuously confirmed.

  On the other hand, when the tsunami information is received (Yes in step S1), the tsunami information receiving unit 1 acquires the tsunami information (step S2).

  Subsequently, when the flooded area determination unit 2 receives the tsunami information received from the tsunami information reception unit 1, the flooded area determination unit 2 determines the flooded area in the plant based on the tsunami information and the facility information stored in the facility information database 21. (Step S3). The detailed process of step S3 will be described in the description of the process flow shown in FIG.

  Subsequently, the flooded area determination unit 2 specifies a protection device to be activated from information on the protection device stored in the protection device information database 22 based on the determination result (step S4).

  The determination result processing unit 3 determines the protection device to be activated in accordance with the specification of the flooded area determination unit 2 (Yes in step S5), and the determination result processing unit 3 instructs the protection device to be activated (startup) to that effect. (Instruction) is transmitted (step S6). On the other hand, for a protective device that does not need to be activated (No in step S5), the determination result processing unit 3 advances the process to step S7 without transmitting a control command.

  The determination result processing unit 3 outputs the determination result of the flooded area and information about the protective device to be activated to the display device 5 and the alarm device 6 (step S7).

  Thereafter, the processing from step S1 to step S7 is repeated.

  Next, the contents of the flooded area determination processing flow shown in FIGS. 7 and 8 will be described with reference to FIGS.

  When the flooded area determination process of step S3 shown in FIG. 6 is started, the flooded area determination unit 2 predicts the height of the tsunami that reaches the plant based on the tsunami information acquired from the tsunami information reception unit 1 ( Step S11).

  Next, the flooded area determination unit 2 acquires the facility information stored in the facility information database 21 and the protective device information stored in the protective device information database 22 (step S12).

  When the predicted height of the tsunami is lower than the altitude h1 (Yes in step S13), the inundation area determination unit 2 determines that there is no inundation area in the plant and performs a predetermined normal earthquake response process. (Step S14). After this step S14, the process proceeds to step S112. On the other hand, when the predicted height of the tsunami is higher than the altitude h1 (No in step S13), it is further determined whether or not it is lower than the altitude h2 (step S15).

  When the predicted height of the tsunami is smaller than the altitude h2 (Yes in step S15), the inundation area determination unit 2 determines that the inundation area in the plant is the area A, and performs protection setting for the area A (step) S16). After this step S16, the process proceeds to step S112. On the other hand, when the predicted height of the tsunami is equal to or higher than the altitude h2 (No in step S15), it is further determined whether or not it is lower than the altitude h3 (step S17).

  When the predicted height of the tsunami is smaller than the altitude h3 (Yes in step S17), the flooded area determination unit 2 determines that the flooded areas in the plant are areas A and B, and the protection settings for the areas A and B are made. Is performed (step S18). After step S18, the process proceeds to step S112. On the other hand, when the predicted height of the tsunami is equal to or higher than the altitude h3 (No in step S17), the flooded area determination unit 2 further determines whether the height is lower than the altitude h4 (step S19).

  When the predicted height of the tsunami is smaller than the altitude h4 (Yes in step S19), the flooded area determination unit 2 determines that the flooded areas in the plant are areas A, B, and C, and the areas A, B, and C protection setting is performed (step S110). After this step S110, the process proceeds to step S112.

  On the other hand, if the predicted tsunami height is higher than the altitude h4 (No in step S19), the inundation area determination unit 2 determines that the inundation area in the plant is all areas and performs the most emergency processing setting. The process proceeds to step S112.

  Further, the inundation area determination unit 2 acquires data on the underground structure or the like of the facility information from the facility information database 21 for the inundated area (step S112), and confirms whether the underground structure or the like exists (step S112). S113).

  When the flooded area determination unit 2 confirms that an underground structure or the like exists for the flooded area (Yes in step S113), the flooded area determination unit 2 straddles the area and the depth of the underground structure, etc. The facility that is determined to be inundated through the inundation route and the like is further added to the facility to be protected (step S114). On the other hand, when the flooded area determination unit 2 confirms that there is no underground structure or the like in the flooded area (No in step S113), the process proceeds to step S115.

  Finally, the inundation area determination unit 2 specifies the protection device to be activated based on these results (protection target) and the protection device information stored in the protection device information database 22 (step S115). When this process ends, the process of step S3 shown in FIG. 6 ends.

  For example, in a large-scale plant such as a power plant, there are a wide range of locations where tsunami protection is required, so it may not be in time for the tsunami attack by manual operation by the staff alone. Operation leakage is also likely to occur. By automatically performing the above-described tsunami protection operation, it is possible to shorten the time until the tsunami protection system is established.

  According to the present embodiment, the protective device can be activated based on the tsunami information with respect to an area that has been classified in advance. Also, by shortening the time by automating part or all of the tsunami protection operation, the tsunami protection system of the plant can be efficiently prepared between the occurrence of the earthquake and the arrival of the tsunami. Thereby, the tsunami damage to a plant can be suppressed as much as possible, the plant can be function-maintained, or a serious accident can be prevented.

[Second Embodiment]
Next, a second embodiment of the tsunami protection system according to the present invention will be described with reference to FIGS. 9 and 10, the same reference numerals are given to the same components as those in the first embodiment shown in FIGS. 1 and 2, and duplicate descriptions are omitted. Here, FIG. 9 is an elevation view showing a configuration example of the entire plant to which the tsunami protection system of the second embodiment is applied, and FIG. 10 is a block diagram showing a configuration of the tsunami protection system of the second embodiment. is there.

  The plant shown in FIG. 9 is a facility 9 to a facility 12 having the same building as the plant shown in FIG. 1, and various measuring instruments and monitoring devices for monitoring tsunamis in and around the plant. It has.

  As shown in FIG. 9, a tsunami detector 16 and a tide gauge 14 are provided near the coast of the plant. Also, an image processing unit 17 provided with a surveillance camera installed on a steel tower or the like for monitoring the state of distant seawater, a plurality of water level gauges 15 provided on the floor of each facility building, structure, etc. .

  As shown in FIG. 10, the tsunami protection system according to the present embodiment includes a tsunami information reception unit 1, a flooded area determination unit 2, a facility information database 21, a protection device information database 22, a determination result processing unit 3, and a protection device control unit 4. In addition to the configuration equivalent to that of FIG. 1 of the display device 5 and the alarm device 6, the tide gauge 14, the water gauge 15, the tsunami detector 16 and the image processor 17, and the reaching tsunami predictor 7 shown in FIG. Etc.

  Tsunami information includes emergency earthquake warnings and tsunami warnings obtained from outside, detection signals from tide gauges 14 installed in the plant premises and surrounding areas, and water levels that detect the intrusion of seawater installed in various facilities in the plant This includes detection signals from the total 15 and signals transmitted from a plurality of tsunami detectors 16 installed offshore around the plant.

  Further, the tsunami information may be information obtained by performing predetermined processing by the image processing unit 17 including a camera installed in the plant and the surrounding area of the plant, or information combined with the plurality of detection signals described above. Good. The information obtained by performing predetermined processing by the image processing unit 17 is, for example, by performing predetermined image processing on an image of a monitoring camera that is installed in the plant and in the vicinity of the plant and captures the state of the ocean near the plant. For example, image processing for estimating the height of the obtained tsunami.

  Moreover, the predicted height of the tsunami used for determining the flooded area may use external information sent from an external system (for example, a system of the Japan Meteorological Agency) such as an earthquake early warning or a tsunami warning. Alternatively, a measurement signal transmitted from a tide gauge 14 installed on the coast around the plant, one or a plurality of tsunami detectors 16 installed offshore around the plant, and the like may be used.

  These pieces of information are sent to the reaching tsunami predicting unit 7 via the tsunami information receiving unit 1, and the reaching tsunami predicting unit 7 determines the predicted height and predicted arrival time of the tsunami based on these pieces of information.

  The arrival tsunami prediction unit 7 obtains the predicted height of the tsunami that reaches the plant based on the tsunami information, and uses the obtained predicted height of the tsunami when the inundation area determination unit 2 determines the inundation area.

  The reaching tsunami prediction unit 7 obtains, for example, the height of the tsunami that is increased according to a predetermined coefficient to the predicted height of the tsunami obtained from the tsunami information, and uses the obtained value as the predicted height of the second tsunami. Also good. In addition, the predicted height of the second tsunami may be obtained according to the seismic intensity of the earthquake, the distance from the epicenter, or the like. For example, values obtained empirically may be used, or values calculated by simulation or the like may be used.

  The reaching tsunami prediction unit 7 obtains the predicted height of the second tsunami by performing the above-described predetermined calculation or the like on the predicted height of the tsunami determined based on the tsunami information, and obtains the second calculated tsunami. The predicted height of the tsunami is used when the flooded area determination unit 2 determines the flooded area.

  The flooded area determination unit 2 receives the predicted height of the second tsunami from the arrival tsunami prediction unit 7, determines the second flooded area, and identifies the protective device to be activated.

  The tsunami protection system of the second embodiment includes a predicted height of a tsunami that reaches the plant, a flooded area determined according to the predicted height of the tsunami, the latest flooded situation in each facility in the plant, and the protection device. The execution situation is output to an output device such as the display device 5 and the alarm device 6 as display information or audio information.

  According to the tsunami protection system of the second embodiment, the predicted height of the tsunami used for determining the flooded area of the plant can be used on the safer side. Furthermore, in the tsunami protection system according to the second embodiment, when the tsunami height, or when the tsunami has actually reached or reached the plant, the predicted tsunami height is further corrected. It becomes possible to do.

  In the tsunami protection system of the present embodiment, for example, when a large earthquake occurs, the reaching tsunami prediction unit 7 uses these tsunami information to estimate the predicted height of the tsunami arriving at the plant from the viewpoint of the safety side. May be. Specifically, tsunami protection on the safer side can be achieved by determining the flooded area of the plant as the predicted height of the second tsunami, which is arbitrarily increased (multiplier factor) from the predicted height of the tsunami obtained from the tsunami information. A system can be taken.

  Even when the above-described tsunami detector 16 does not operate, by providing a sensor such as a water level meter 15 for detecting inundation at each facility in the plant, the inundation detection signals detected from these sensors can be obtained. Use. Based on the detection signals of these sensors, the height of the tsunami actually arrived at the facility where the inundation was detected and the inundation prevention device of the facility installed at a predetermined height above the altitude of the facility. When the predicted height of the tsunami is exceeded, the predicted height of the tsunami can be corrected again and the flooded area can be re-determined. As a result, it is possible to take protective measures against further flooded areas, and to prevent the spread of damage.

  As a result, even if a tsunami that actually exceeds the predicted height of the initial tsunami arrives, the predicted height of the tsunami is corrected instantaneously, and the protection range that should be protected can be accelerated by using the corrected predicted height of the tsunami. This can be corrected to prevent the damage from spreading.

  Further, the tsunami protection system according to the present embodiment is configured to notify the plant maintenance staff using the display device 5 and the alarm device 6. As a result, it is possible to always know the inundation area prediction information before the tsunami strike and the inundation situation of each facility at the time of the tsunami strike, so the maintenance staff in the plant should predict and grasp the damage status of the plant at an early stage Can do.

[Other Embodiments]
As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. For example, the present invention can be applied to a system having a similar tsunami disaster prevention equipment other than a plant such as a power plant. Moreover, you may combine the characteristic of each embodiment. Furthermore, these embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

  DESCRIPTION OF SYMBOLS 1 ... Tsunami information receiving part, 2 ... Inundation area determination part, 3 ... Determination result processing part, 4 ... Protection apparatus control part, 5 ... Display apparatus, 6 ... Alarm apparatus, 7 ... Arrival tsunami prediction part, 9, 10, 11 12 ... Facility, 13 ... Breakwater, 14 ... Tide gauge, 15 ... Water level meter, 16 ... Tsunami detector, 17 ... Image processing unit, 21, 21A ... Facility information database, 22, 22A ... Protection device information database, 91, 92, 101, 102, 103, 111, 112, 121 ... building, 93, 104 ... underground structure, 94 ... underground access path

Claims (6)

A tsunami protection system that protects a plant having one or more buildings, equipment, and facilities including protection equipment for protecting them from a tsunami from tsunami,
A tsunami information receiving unit for receiving tsunami information including at least a predicted height of a tsunami caused by the occurrence of an earthquake,
For each area in which the plant is identifiable by altitude and geographical range, at least the altitude, first facility identification information indicating the identification of the facility above the altitude, and the outside of the plant or other A facility information database for storing facility information including presence / absence of a structure that can be an inundation path with the facility, second facility identification information indicating a facility that can be an inundation path below the altitude, and the inundation path; ,
Protection device information including at least the first or second facility identification information and information on the protection device provided in the facility corresponding to the first or second facility identification information for each area. A protective device information database for storing
A flooded area that obtains a predicted height of a tsunami that reaches the plant from the tsunami information and determines a flooded area of the plant with respect to the predicted height of the tsunami based on the facility information stored in the facility information database A determination unit;
Based on the determination result of the flooded area by the flooded area determination unit, the protection device information stored in the protection device information database is specified to start any of the protection devices, the specified protection device A tsunami protection system comprising: a protection device control unit that transmits a control signal for starting. Based on the facility information stored in the facility information database from the determination result of the flooded area, the flooded area determination unit determines the predicted height of the tsunami when there is a structure that can serve as the flooded route in the flooded area. Determine the degree of risk that any of the above facilities will be submerged,
The protection device control unit instructs the activation of the protection device having the risk level when the flooded area determination unit determines that any of the facilities with respect to the predicted height of the tsunami has the risk level. The tsunami protection system according to claim 1, characterized in that: When the protective device control unit includes an alternative facility of one facility installed in the plant, it has a switching means to the alternative facility,
The inundation area determination unit determines that any of the facilities with respect to the predicted height of the tsunami has the risk, and there is one facility provided with the substitute facility in the facility having the risk. In this case, the tsunami protection system according to claim 2, wherein the protection device control unit is instructed to switch to the alternative facility. Output that is output as display information or audio information about the inundation area determined according to the predicted height of the tsunami, the facility having the risk, and the activation state of the protection device in each of the facilities of the plant The tsunami protection system according to claim 2, further comprising a device. The tsunami information is an emergency earthquake warning or tsunami warning obtained from outside the plant, tsunami detection information obtained by performing predetermined processing on the images of cameras installed around the plant, installed inside or outside the plant Any of the signals detected from the tide gauges detected, the signals detected from the water gauges that detect the intrusion of seawater installed in the plant, and the signals detected from the tsunami detectors installed offshore around the plant Or a combination of any of the above,
A reaching tsunami prediction unit that obtains a predicted height of a tsunami that reaches the plant based on the tsunami information and uses the obtained predicted height of the tsunami when determining the flooded area of the flooded area determination unit The tsunami protection system according to any one of claims 1 to 4, wherein the tsunami protection system is provided. The reaching tsunami prediction unit performs a predetermined calculation on the predicted height of the tsunami obtained based on the tsunami information to obtain a predicted height of the second tsunami, and obtains the predicted second tsunami The tsunami protection system according to claim 5, wherein the height is used when the flooded area determination unit determines the flooded area.

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