JP2005188153A - Disaster-preventive type subterranean structure and shelter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve amalgamation of a shelter and a subterranean structure, and autonomy of the shelter. <P>SOLUTION: A disaster-preventive type subterranean structure comprises a subterranean multi-layered structure (4) forming a life space, a shelter (10) joined to the multi-layered structure (4), and a cooling means for cooling the shelter (10). The cooling means comprises a water tank (18) joined to an outer surface of the shelter, and a heat exchanger (21 or 21') for lowering temperature of the hot steam generated in the water tank (18). The heat flow caused by a fire broken in the subterranean multi-layered structure goes up in a partial layer of the multi-layered structure and then goes toward a ground multi-layered structure. It is more dangerous for evacuees to go to the upper layers. The existence of the shelter (10) disposed at a lower layer is definitely effective. The heat exchanger cools an exterior wall of the shelter in a positive manner. To lower the temperature of the inside of the shelter by making the shelter a refrigerating chamber further ensures the safety. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disaster prevention type underground structure and a shelter, and more particularly to a large depth type disaster prevention type underground structure and a shelter.

  Advances in deep-depth technology will create a large underground (underground) space. Known disaster prevention systems are considered ineffective against disasters that occur in large underground spaces. There are many types of alarms and a large number of alarm devices, and it is difficult for a person or a computer to quickly and accurately determine a disaster situation from various alarm contents of many alarm devices. The operation of the smoke detector at the combustible storage location does not necessarily indicate a fire, and the smoke detector signal of the smoke detector where there is no combustible or power supply is not likely to be based on malfunction, If a thermal sensor is working with the sensor, there is a high possibility of arson. It is difficult for a person or a computer to determine whether or not the arson is arson.

  Recognition of smoke behavior is important for proper evacuation and fire fighting activities. In a deep underground structure, it is difficult to predict the behavior, and it is difficult to predict the extent of damage (fire spread). If a measure is taken against the current situation estimated by a person or a computer, the effect is difficult to predict or counter-effective. A plurality of ducts are connected to one exhaust fan, and the plurality of ducts branch in a mesh shape. Furthermore, one room and another room are connected by doors, and the open / close state of the door and damper is changed. Has an unpredictable impact on the entire facility and is likely to have adverse effects. In deep subways and large structures with complex structures, it is difficult for evacuees to confirm the current location, and the evacuation route is poorly recognized. The evacuees in the underground structure have a high risk of getting lost in the evacuation route filled with the smoke flow flowing upward. Confusion at the time of evacuation makes priority evacuation of vulnerable people difficult. Thus, a known disaster prevention system is powerless to underground structures.

  Earthquakes that occur unpredictably cause secondary disasters such as fires in such underground spaces. It is difficult to extinguish fires in underground spaces where it is difficult to put in a fire extinguisher from the air. One cause of combustion is temperature. Putting a fire extinguisher into the combustion zone that rises above the ignition temperature and lowering it below the ignition temperature will increase the amount of smoke and harmful volatiles. Of the countermeasures against fires in the underground space, temperature reduction is the most important. It is primarily important not to raise the ambient temperature to the temperature at which smoke is emitted.

  The underground space is getting deeper and more complex. It is difficult to urgently escape from such underground space. When the actual evacuation speed at the time of a fire is slower than the assumed evacuation speed, it is difficult to prevent the evacuee from getting caught in the smoke because the installed smoke evacuation capability is not in time. When the actual evacuation time is longer than the assumed evacuation time, the generated smoke diffuses and flows out into the evacuation route. It is difficult or impossible to take escape action in such a situation. If the diffusion space is maintained at room temperature in a situation where chemicals are diffusing, chemicals with a molecular weight or specific gravity greater than air will normally be discharged by a smoke evacuator located at the upper part. Smoke effect is thin.

  There is a contradiction between smoke emission and fire spread. A fire damper (thermal fuse damper) is installed at the entrance of the smoke exhaust duct. When the temperature of the smoke exhaust duct exceeds the specified temperature, the fire damper is closed. The closing of the fire damper protects the smoke exhauster associated with the smoke exhaust duct from heat. Such suppression of smoke exhaustion is contrary to the purpose of providing a smoke exhaust duct. Good smoke evacuation promotes the introduction of fresh air, increases the spread of fire, creates a spark and increases the number of new fire sources.

  To avoid such inconsistencies, the importance of disaster prevention shelters, which are temporary evacuation facilities, is reconsidered. A heat-insulating double-structured shelter is known from Patent Document 1 described later. A shelter having a cooling means is known from Patent Document 2 described later. A shelter with a temporary evacuation structure for coping with hot air generation is known from Patent Document 3 listed later. A shelter in which a plurality of evacuation exits are arranged is known from Patent Document 4 described later.

  Disaster prevention system consists of shelter, smoke duct net arrangement, numerous thermometers / smoke detectors, measuring instruments, electrical drive sources that drive sprinklers, and many different measurement signals It is a collection of complicated equipment systems such as computers that centrally control the opening and closing of many smoke exhaust ducts and the opening and closing of many fire doors, and communication systems for evacuation guidance. In the event of a fire associated with an earthquake, it is expected that some or all of the control systems of such complex and intertwined devices will be disabled.

  It is difficult to predict the extent of damage. It is difficult for a computer to predict proper opening / closing control of dampers interposed (or opened) at many positions in a smoke exhaust duct connected like a mesh. Computers installed in intelligently sophisticated and safe protected locations are useless if the communication line is interrupted.

  Fusion of shelter and underground structure is important. Proper placement of the shelter is next important. It is further required to prevent the shelter from becoming hot. Autonomous power sources and power sources in the shelter are desired.

Patent No. 3018402 JP-A-11-141173 JP 2000-34848 Japanese Patent No. 2926470

An object of the present invention is to provide a disaster prevention type underground structure in which a shelter is fused with the underground structure, and a shelter.
Another object of the present invention is to provide a disaster prevention type underground structure in which a shelter is appropriately disposed, and a shelter.
Still another object of the present invention is to provide a shelter to which cooling properties are imparted.
Still another object of the present invention is to provide an autonomous shelter.

  The disaster prevention type underground structure according to the present invention includes an underground multilayer structure (4) forming a living space, a shelter (10) joined to the underground multilayer structure (4), and cooling for cooling the shelter (10). Means. The cooling means is formed of a water tank (18) joined to the outer surface of the shelter, and a heat exchanger (21 or 21 'in FIG. 4) for reducing the temperature of the heat steam generated in the water tank (18). Yes.

  The heat flow caused by the fire generated in the underground multi-layer structure moves up the partial layer of the underground multi-layer structure and further toward the ground multi-layer structure. As evacuees head up, they increase the risk. If it is judged dangerous to go upstairs, it is wise to go down. In this case, the presence of the shelter arranged in the lower layer is decisively effective. The heat exchanger actively cools the outer wall of the shelter. Reducing the temperature inside the shelter by making the shelter into a refrigerator further ensures its safety.

  Since it is safe to evacuate further downward, it is more secure to arrange the shelter on the lowermost layer side of the underground multilayer structure. The shelter is arranged in the lowermost layer included in the underground multilayer structure or on the ground surface that supports the underground multilayer structure.

  The shelter (10) is formed of a first shelter and a second shelter. It is preferable to further increase the number of shelters. The first shelter is disposed to be bonded to the lowermost layer of the underground multilayer structure, and the second shelter is disposed to be bonded to the middle layer of the underground multilayer structure. Arranging a plurality of shelters in a plurality of layers having different height positions gives flexibility to evacuation.

  A flue gas network (6) arranged in a multilayer on the underground multilayer structure (4), a situation detection sensor (12) distributed on the underground multilayer structure (4), and a shelter (10) A computer (15) arranged inside the computer is further effectively added. The situation detection sensor (12) transmits the temperature detected by the situation detection sensor (12) and the position where the situation detection sensor (12) is arranged to the computer (15). The computer (15) detects the fire occurrence area, especially the fire occurrence hierarchy, determines the scale and direction of fire spread, and properly notifies the evacuee of the evacuation direction. In particular, the computer (15) is arranged at a lower hierarchy than the fire occurrence hierarchy. Shelter can be taught to evacuees.

  The heat exchanger is formed of a turbine rotating with thermal steam, a generator (21) coupled to the turbine, and a condenser (24) for liquefying the thermal steam on the downstream side of the turbine. The turbine attached to the generator (21) has a heat exchanging action for cooling the hot water, cools the shelter (10) and supplies power to the shelter, and is formed autonomously. The power is used for the introduction of fresh air and the operation of the computer, and the evacuees or rescue workers in the shelter live autonomously until the rescue team arrives, and rescue assistance that informs the rescue team of the fire situation Can be executed safely. A rescue team headquarters can be set up in the shelter. For heat exchange, various types of heat exchangers that exchange heat between hot steam and cooling water are used.

  As the underground multi-layer structure, a part of a high-rise building or a subway station structure is appropriately exemplified.

  The shelter according to the present invention includes a main body shell (17) that hermetically forms an internal space, and cooling means for cooling the main body shell (17). The cooling means is formed by a water tank (18) joined to the outer surface of the main body shell and heat exchangers (21, 21 ') for reducing the temperature of the heat vapor generated in the water tank (18). The outer surface of the shelter is cooled to effectively suppress the rise in the internal temperature.

  It is particularly effective that the heat exchanger is formed of a turbine rotating with hot steam, a generator (21) coupled to the turbine, and a condenser for liquefying the hot steam on the downstream side of the turbine. By simultaneously generating and cooling, the shelter allows for autonomous evacuation while the surrounding environment is dangerous.

  The main body shell (17) is preferably formed of an outer shell and an inner shell, and a heat insulating layer is preferably formed between the outer shell and the inner shell. In this case, the outer shell is cooled, and the amount of heat that is leaked from the outer shell to the inner shell is remarkably reduced.

  The disaster prevention underground structure and shelter according to the present invention can be autonomous and can establish safety during evacuation.

  The realization of the disaster prevention type underground structure and the shelter according to the present invention will be described in detail corresponding to the drawings. As shown in FIG. 1, the shelter 10 is constructed as a part of the deep underground structure 1. The deep underground structure 1 is supported on a rock mass or a rock mass equivalent structure 2. The deep underground structure 1 is formed of a ground life layer 3, an underground life layer 4, and a shelter arrangement layer 5, and is built on the bedrock 2 in a high layer. In particular, the shelter 10 constructed as a large mass object is arranged in the lowermost region of the deep underground structure 1 and is joined to the upper underground living layer 4 below the underground living layer 4. preferable.

  The underground life layer 4 is multi-layered. A large number of horizontal smoke exhaust duct lines 6 are arranged vertically and horizontally or in a net shape in a large number of layers of the underground living layer 4. The horizontal smoke exhaust duct line 6 of each layer is connected to a plurality of vertical common smoke exhaust duct lines 7. The horizontal smoke exhaust duct line 6 is equipped with a smoke exhauster 8 interposed. Smoke and harmful gas (hereinafter referred to as smoke flow gas) in the horizontal smoke exhaust duct line 6 are sent to the vertical common smoke exhaust duct line 7 by the smoke exhauster 8. The uppermost end of the vertical common smoke exhaust duct line 7 is connected to a large smoke exhauster 11 installed on the ground. Each of the smoke evacuator 8 and the large smoke evacuator 11 has a built-in blower blade. The smoke evacuator 8 and the large smoke evacuator 11 discharge the smoke flow gas generated globally or locally in the underground life layer 4 to the atmosphere. It is desirable to attach to the large smoke evacuator 11 a cyclone that removes smoke particles and a smoke gas detoxification device (not shown) that detoxifies the combustion of harmful gases. The situation detection sensor unit 12 is disposed inside a plurality of appropriate locations of the horizontal smoke exhaust duct line 6 or is disposed in the vicinity of the outside of the plurality of appropriate locations of the horizontal smoke exhaust duct line 6, and further vertically It is arranged inside and outside of the directional common smoke exhaust duct line 7. The situation detection sensor unit 12 is installed in the smoke exhauster 8, in the vicinity of the smoke exhauster 8, or in a ceiling portion of each level. The situation detection sensor unit 12 forms a temperature sensor (not shown), a smoke detection sensor (not shown), a smoke flow gas flow rate sensor (not shown), and other sensors (example: flow rate sensor). It is more preferable that the situation detection sensor unit 12 is interposed in the vertical common smoke exhaust duct line 7 in correspondence with the level.

  The shelter 10 is formed with an escape entrance hatch 13 and an elevator unit passing hatch 14 through which the elevator unit of the elevator can enter and exit. The escape entrance hatch 13 is preferably arranged at a plurality of locations on the ceiling surface, cylindrical side surface, vertical side surface, and tunnel facing surface toward the escape tunnel of the shelter 10. A computer 15 for disaster prevention system is stored in the shelter 10. The detection signals output by the situation detection sensor units 12 are transmitted to the disaster prevention system computer 15 by wire 16 or wirelessly. The disaster prevention system computer 15 analyzes the detection signal and performs group control of a large number of smoke evacuators 8.

  FIG. 2 shows the details of the cooling method of the shelter 10. The shelter 10 is preferably structured as a cylindrical shell 17 in terms of ensuring seismic strength. Both end portions of the shelter 10 are preferably formed in hemispherical shells as shown in FIG. The cylindrical shell 17 is formed in an airtight structure so that smoke flow gas does not enter from the outside. The lower part of the cylindrical shell 17 is submerged under the surface of the cooling water 19 taken into the water tank 18. The water tank 18 can normally store water, or can supplementarily take in water released by the sprinkler when a disaster occurs. The water storage space surrounded by the lower part of the cylindrical shell 17 and the outer wall of the water tank 18 is formed in a hermetically sealed manner.

  A generator 21 is arranged inside the cylindrical shell 17. The generator 21 includes a steam turbine (not shown). A steam flow path in which the steam turbine is interposed is formed by a steam introduction pipe 22 and a steam discharge pipe 23. The steam discharge pipe 23 is connected to the condenser 24. The condenser 24 is connected to the injection pump 25. Instead of the infusion pump 25, a check valve is used. The liquid (water) generated by the condenser 24 is sucked by the injection pump 25 and returned to the inside of the water tank 18. The medium circulation path for power generation formed by the water tank 18, the steam introduction pipe 22, the generator 21, the condenser 24, and the injection pump 25 is an extremely important fluid circuit, and its safety is sufficient in the shelter 10. Is secured.

  A sprinkler 27 is used as a water supply source. The sprinkler 27 is used as an auxiliary water supply source. A part of the water discharged from a large number of sprinklers 27 in the underground living layer 4 is collected by a funnel disposed at an appropriate location, purified by a filter, and used for power generation via a water supply pipe 28 and a condenser 24. The medium circuit is replenished. If the amount of the power generation medium increases, the power generation medium in the power generation medium circulation path is discharged out of the cylindrical shell 17 through the water discharge pipe 29.

  A pressure relief valve 31 is disposed outside the cylindrical shell 17. The pressure relief valve 31 receives a vapor pressure higher than a specified pressure, and opens and closes at an opening corresponding to the vapor pressure. The steam of the steam amount Q corresponding to the opening / closing operates the mechanical control mechanism 32. The operating force of the mechanical control mechanism 32 corresponding to the steam amount Q controls the degree of opening and closing of the interlocking valve 33 attached to the injection pump 25. The makeup water is replenished by being injected from the sprinkler 27 into the injection pump 25 via the interlocking valve 33. An electronic control mechanism can be used in place of the mechanical control mechanism 32.

  The output signals of the situation detection sensor unit 12 are collected in the disaster prevention computer 15. The output signal includes a position signal in addition to temperature and smoke amount. The analysis code (algorithm) of the computer 15 for the disaster prevention system corresponds to time series signals (temperature, smoke amount, position) transmitted from a number of positions, and includes one or a plurality of fire occurrence areas, fire scales (temperature and temperature). Range), the fire spread direction is calculated, and the evacuation action is instructed to the evacuation target person of each section of each level. The evacuation target who is in danger of evacuating to the upper floor or the evacuation target who may be delayed may be instructed about the boarding position of the evacuation elevator or evacuation action by the stairs at the appropriate place Is done. The elevator box of the elevator system in which the evacuees are boarded passes through the elevator unit passing hatch 14 opened by the disaster prevention system computer 15 or manually, and is suspended in the cylindrical shell 17. The evacuees who use the stairs evacuate into the cylindrical shell 17 from the disaster prevention system computer 15 or the escape entrance hatch 13 opened manually.

  When the evacuation is completed, the escape entrance hatch 13, the lifting unit passage hatch 14 and other escape doors are closed, and the inside of the cylindrical shell 17 is kept sealed. The replacement of the gas in the cylindrical shell 17 with fresh air is performed by known techniques. After the evacuation is completed or before the evacuation is completed, the disaster prevention system computer 15 fills the condenser 24, the injection pump 25, and the circulation pipe with water from the sprinkler 27. The hot air current in the underground living layer 4 continues to be discharged into the atmosphere via the horizontal smoke exhaust duct line 6 and the vertical common smoke exhaust duct line 7, and is at the lowest layer of the deep underground structure 1. The amount of heat of hot air reaching the ceiling surface of the shelter 10 arranged is small as designed. When the fire scale is large and the spread of fire reaches the cylindrical shell 17, the heat reaching the ceiling side of the cylindrical shell 17 is quickly transferred from the upper portion of the steel cylindrical shell 17 having a high thermal conductivity to the lower portion thereof. Conducted by conduction 34. The heat insulating layer attached to the inside of the heat conducting layer of the cylindrical shell 17 suppresses heat conduction into the cylindrical shell 17. The heat transferred to the lower part of the cylindrical shell 17 is taken away by the cooling water in the water tank 18. The cooling water is heated to the boiling point and vaporized. The hot steam is sent to the generator 21 through the steam introduction pipe 22. The low-pressure steam turbine of the generator 21 starts power generation, and the heat of the steam is converted into electric power. The hot water of the power generation medium deprived of heat as electric energy is cooled and returned to a liquid by the condenser 24. The liquid is pushed by the pressure of the upstream steam, or is sucked from the condenser 24 by the pumping action of the injection pump 25 and returned back into the cooling water 19.

  The power generation medium has a cooling action for cooling the cooling water 19, and the electric power generated by the generator 21 in response to the cooling is supplied to the electrical equipment in the shelter 10, particularly to the disaster prevention system computer 15. . As described above, the shelter 10 having the self-cooling function and the self-power generation function provides an autonomous evacuation space. The self-cooling shelter 10 has a cooling property that lowers the temperature of the upper layer space and suppresses the spread of fire. The cooling effect gradually propagates to the higher floors and mitigates the spread of fire on the higher floors.

  The shelter 10 can be divided and structured. A support 35 (see FIG. 1) that is equivalent to the foundation can pass through the shelter 10 that forms a single huge evacuation space. It is effective that the shelter 10 is provided with an emergency exit leading to the evacuation tunnel. The shelter 10 is made into a refrigerator in an emergency. In normal times, it can be used as a normal living space, office.

  FIG. 3 shows another implementation of the method for cooling a shelter according to the invention. In this realization, the water tank 18 ′ is joined to the upper part of the cylindrical shell 17, particularly to the outside of the ceiling part. In this realization state, the heat of the ceiling part that becomes hot in the initial stage is immediately taken away by the generator 21, the initial cooling effect is great, the ambient temperature is quickly reduced, and the probability that the fire spread reaches the shelter 10 can be reduced. . In this realization state, the power generation medium circulation path formed by the generator 21, the condenser 24, the injection pump 25, and the water tank 18 ′ can be disposed outside the cylindrical shell 17. It is preferable to cool the cylindrical shell 17 directly with sprinkler water.

  FIG. 4 shows still another implementation of the method for cooling a shelter according to the present invention. A heat exchanger 21 ′ is used as a cooling device instead of the generator 21 described above. The heat exchanger 21 ′ is a water tank 18 or a steam pipe 37 that circulates the hot steam 36 generated in the water tank 18 ′ and a contact area that contacts the hot steam in the steam pipe 37 through the cooling medium 38. And a cooling medium pipe 39 that forms a large heat exchange surface. Water discharged from the sprinkler 27 is used as the cooling medium 38. The hot steam 36 is cooled and liquefied by the heat exchanger 21 ′, and the liquefied liquid water 41 is returned to the inside of the water tank 18. The cooling medium 38 that rises in temperature through the cooling medium pipe 39 is discharged through the water discharge pipe 29.

  FIG. 5 specifically shows the arrangement of the water discharge pipe 29. The water in the condenser 24 or the water passing through the cooling medium pipe 39 is discharged from the open ends of the plurality of water discharge pipes 29. The plurality of water discharge pipes 29 are arranged symmetrically with respect to the vertical plane 42 that passes through the center line of the cylindrical shell 17. The water discharge pipes 29 rise from the ceiling surface of the cylindrical shell 17 in the vertical direction. A part 43 of the discharged water discharged from the upper end opening of the water discharge pipe 29 due to the vapor pressure effectively cools the central region of the ceiling surface of the cylindrical shell 17, and the other part 44 of the cylindrical shell 17. Released to the surroundings. The other part 44 lowers the ambient temperature around the cylindrical shell 17 and prevents the fire spreading to the cylindrical shell 17.

  The cylindrical shell 17 is preferably composed of an inner and outer double shell. In this case, it is important to form a vacuum layer between the inner and outer double shells and extremely reduce the thermal conductivity in the inner and outer directions. A ceramic coating is applied to the surface of the outer shell. The ceramic coating layer having low thermal conductivity and excellent heat resistance has impact resistance against an object falling from above, has excellent corrosion resistance, and is not easily corroded by chemical substances over a long period of time. It is effective that a nickel-based alloy layer having excellent heat resistance, corrosion resistance and impact resistance is used instead of the ceramic coating.

  The cylindrical shell 17 is equipped with an air purification device in addition to food, drinking water, an air respirator or an oxygen cylinder. The electric power is supplied from the generator 21 or the fuel cell generator. It is preferable that the computer 15 for disaster prevention systems has an internal and external bidirectional communication function. As a communication line, it is desirable to provide wireless as well as wired. For the emergency operation of the disaster prevention computer 15, it is preferable that a battery is always provided inside the cylindrical shell 17.

  Although the large shelter 10 is arranged in the lowermost layer, it is effective that a plurality of small shelters 10 are arranged in a distributed manner on the middle floor. The plurality of small shelters 10 can have an important task of establishing their own safety and reporting the status of the middle floor to the rescue team headquarters and the disaster prevention system computer 15.

FIG. 1 is a cross-sectional view showing a realization of the disaster prevention underground structure according to the present invention. FIG. 2 is a cross-sectional view showing a realization of the shelter according to the present invention. FIG. 3 is a cross-sectional view showing another embodiment of the shelter according to the present invention. FIG. 4 is a sectional view showing still another embodiment of the shelter according to the present invention. FIG. 5 is a cross-sectional view showing still another embodiment of the shelter according to the present invention.

Explanation of symbols

4 ... Underground multilayer structure 6 ... Smoke exhaust network 10 ... Shelter 12 ... Situation detection sensor 15 ... Computer 17 ... Body shell 18 ... Water tank 21 ... Heat exchanger (generator)
21 '... heat exchanger 24 ... condenser

Claims (12)

Underground multi-layer structure that forms a living space,
A shelter joined to the underground multilayer structure;
Cooling means for cooling the shelter,
The cooling means is
A water tank in which cooling water is joined to the outer surface of the shelter;
A disaster-resistant underground structure comprising: a heat exchanger that reduces the temperature of the thermal steam generated in the water tank. The disaster prevention underground structure according to claim 1, wherein the shelter is disposed on a lowermost layer side of the underground multilayer structure. The shelter is
The first shelter,
With a second shelter,
2. The disaster prevention type underground structure according to claim 1, wherein the first shelter is disposed to be bonded to a lowermost layer of the underground multilayer structure, and the second shelter is disposed to be bonded to an intermediate layer of the underground multilayer structure. . A flue gas network arranged in multiple layers in the underground multilayer structure;
A situation detection sensor distributed in the underground multi-layer structure;
A computer disposed inside the shelter;
The disaster prevention underground structure according to claim 1, wherein the situation detection sensor transmits a temperature detected by the situation detection sensor and a position where the situation detection sensor is arranged to the computer. The heat exchanger is
A turbine rotating with the hot steam;
A generator coupled to the turbine;
The disaster prevention underground structure according to claim 1, further comprising a condenser that liquefies the thermal steam on the downstream side of the turbine. The disaster-resistant underground structure according to claim 1, wherein the heat exchanger performs heat exchange between the thermal steam and cooling water. A flue gas network arranged in multiple layers in the underground multilayer structure;
A situation detection sensor distributed in the underground multi-layer structure;
A computer disposed inside the shelter;
The situation detection sensor transmits the temperature detected by the situation detection sensor and the position where the situation detection sensor is arranged to the computer,
The heat exchanger is
A turbine rotating with the hot steam;
A generator coupled to the turbine;
A condenser for liquefying the thermal steam on the downstream side of the turbine,
The disaster-preventing underground structure according to claim 1, wherein the generator supplies power to the computer. The disaster-resistant underground structure according to claim 1, wherein the underground multilayer structure is a part of a high-rise building or a subway station structure. A body shell that hermetically forms an internal space;
Cooling means for cooling the body shell,
The cooling means is
A water tank joined to the outer surface of the main shell;
A shelter comprising: a heat exchanger for lowering a temperature of the thermal steam generated in the water tank. The heat exchanger is
A turbine rotating with the hot steam;
A generator coupled to the turbine;
The shelter according to claim 9, further comprising a condenser that liquefies the thermal steam on the downstream side of the turbine. The shelter according to claim 1, wherein the heat exchanger performs heat exchange between the thermal steam and cooling water. The body shell is
The outer shell,
With an inner shell,
The shelter according to claim 9, wherein a heat insulating layer is formed between the outer shell and the inner shell.

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