CN106128520A - A kind of underground nuclear power station rock mass cavern type containment - Google Patents
A kind of underground nuclear power station rock mass cavern type containment Download PDFInfo
- Publication number
- CN106128520A CN106128520A CN201610651692.5A CN201610651692A CN106128520A CN 106128520 A CN106128520 A CN 106128520A CN 201610651692 A CN201610651692 A CN 201610651692A CN 106128520 A CN106128520 A CN 106128520A
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- China
- Prior art keywords
- containment
- cavern
- rock mass
- reactor core
- nuclear power
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/016—Core catchers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C11/00—Shielding structurally associated with the reactor
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/08—Vessels characterised by the material; Selection of materials for pressure vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of underground nuclear power station rock mass cavern type containment, including the pond, ground resting on the ground and containment shell located underground, access hole and equipment gate is had on containment shell, equipment gate is connected with underpass with access hole, containment shell ecto-entad is disposed with in rock mass, rockmass modification layer and containment steel liner, is provided with the strengthening anchor pole stretched in rock mass outside rockmass modification layer;Also including that reactor core fusing thing located underground collects well and core catch cavern, reactor core fusing thing collection well location is below containment shell, and is connected with core catch cavern by reactor core fused mass conveying pipe.The present invention utilizes the abundant rock mass layer in underground as underground nuclear power station containment layer structure, there is the extraneous man induced event of opposing of excellence, the ability of radiolabeled biotin barrier is provided, the reactor core fused mass produced in collection major accident by being arranged on the core catch cavern of underground to collect, utilizes rock mass barrier to prevent radioactive substance from outwardly spreading.
Description
Technical field
The present invention relates to nuclear power technology, in particular to a kind of underground nuclear power station rock mass cavern type containment.
Background technology
After Fukushima, Japan nuclear accident, country is more strict and prudent to the examination & approval of nuclear power projects, the safety to nuclear power station
Require also to refer to higher status.For this situation, underground nuclear power station is that China's nuclear power developing provides new approaches.
Nuclear power plant containment shell refers to contain the shell building of most of system of nuclear steam supply system and equipment, in order to
Accommodate reactor pressure vessel and Partial security system, it is completely isolated with external environment condition, it is provided that radioactive biological barrier,
Meanwhile, external event (aircraft impact, tornado etc.) is played certain protection.But (aircraft is to nuclear safety for Zhang Tao, Fang Qin et al.
The numerical simulation of shell impact damage effect, Polytechnics of PLA journal: natural science edition, 2014,15 (4): 335-340) grind
Studying carefully discovery at air speed is that under 100m/s clashes into, containment damage is serious, and centre of percussion generation partial penetration is also probably drawn
Send out nuclear leakage.And the actually modern times nearly 200m/s of aircarrier aircraft cruising speed, existing containment technology is under large aircraft clashes into
It is likely to cause a large amount of radioactive substance serious consequence to Environment release.For underground nuclear power station, subterranean body is inherently
Having the protection external event of excellence, provide the functions such as radiolabeled biotin barrier, its performance is much better than the safety of common nuclear power station
Shell.For improving economy, saving construction cost, reduce build process complexity, underground nuclear power station is considered as cancelling nuclear power station
The reactor building generally used, redesigns underground nuclear power station rock mass cavern type containment.
Additionally, the reactor fuel melted down in nuclear plant severe accident forms high temperature, highly radioactive reactor core fused mass.It is anti-
The only further expansion of radioactive pollution scope, prior art generally by cooling in fused mass heap and be detained (such as AP1000),
The mode of reactor core fused mass trapping (such as EPR) processes.But both modes are required for arranging the cold of complexity in containment
But facility (such as Chinese patent: be detained passive cooling system under nuclear reactor major accident state in fused mass heap, application number:
CN201510309669.3), on the one hand add the system complexity in containment, reduce overall security, on the other hand
Expand the volume of containment, improve nuclear power station holistic cost.
Summary of the invention
It is an object of the invention to overcome the weak point of above-mentioned existing background technology, in conjunction with the feature of underground nuclear power station,
Propose a kind of underground nuclear power station rock mass cavern type containment, both there is the opposing external world man induced event of excellence, provide radioactivity raw
The ability of thing barrier, is possible to prevent again the alpha-contamination expansion of reactor core fused mass in major accident, moreover it is possible to treatment in accordance with local conditions improves
Safety, reduction cost.
For achieving the above object, a kind of underground nuclear power station rock mass cavern type containment designed by the present invention, including being positioned at
Pond, ground ground and containment shell located underground, described containment shell has access hole and equipment gate,
Described equipment gate is connected with underpass with access hole, and it is characterized in that, described containment shell ecto-entad is successively
It is provided with in rock mass, rockmass modification layer and containment steel liner, is provided with, outside described rockmass modification layer, the strengthening stretching in rock mass
Anchor pole;Also include that reactor core located underground fusing thing collects well and core catch cavern, described reactor core fusing thing collect well location in
Below containment shell, and it is connected with core catch cavern by reactor core fused mass conveying pipe.
Further, described reactor core fused mass is collected outside well location rockmass modification layer immediately below containment inner pressure vessel
Side, during in accident, reactor core fused mass automatically falls into fused mass collection well under gravity.
Further, also including the containment heat exchanger being arranged in containment, described containment heat exchanger leads to
Cross core catch cavern cooling tube to be connected with pond, ground, it is achieved the ground cooling water passive cooling to underground containment.
Further, described core catch cavern is positioned at below containment shell bottom water plane, and described reactor core melts
Inclined layout is managed in thing conveying, and high-end connection reactor core fused mass collects well, and low side connects core catch cavern, and reactor core fused mass can
Under gravity along the conveying pipe landing of reactor core fused mass to core catch cavern.
Further, arranging high-temperature heat exchanger in described core catch cavern, described high-temperature heat exchanger passes through heap
Core is collected cavern's cooling tube and is connected with pond, ground, it is achieved the long-term passive cooling procedure to reactor core fused mass.
Further, the thickness of described rockmass modification layer is 0.8m~1.8m, and the thickness in described containment steel liner is
6mm~40mm.Described rockmass modification layer is at least one layer.A diameter of 20mm~80mm of described strengthening anchor pole, a length of
1200mm~2500mm, to strengthen shock resistance and cavern's stability of containment.
Further, described reactor core fused mass collect well, reactor core fused mass conveying pipe and core catch cavern Dong Bi and
Bottom arranges reactor core fused mass expendable material, such as TiO2、Fe3O4、Al2O3Deng.Described reactor core fused mass expendable material is at least one
Layer, reactor core fused mass expendable material, by mixing with reactor core material, improves the physics of reactor core fused mass, chemical property.
By the present invention in that the underground nuclear power station rock mass cavern type containment provided by the present invention may utilize underground abundant
Rock mass layer, as underground nuclear power station containment layer structure, has the opposing external world man induced event of excellence, provides radiolabeled biotin
The ability of barrier.The reactor core fused mass produced in collection major accident by being arranged on the core catch cavern of underground to collect, profit
Prevent radioactive substance from outwardly spreading with rock mass barrier.
The invention have the advantages that
1, safety is high.Utilize the anti-strike capability of rock mass layer excellence and the containing to radioactive substance, improve safety.
2, improve economy.On the one hand, containment is high as the core level equipment manufacturing cost preventing radioactive substance from leaking,
By subterranean strata as containment outboard structure, simplify the armored concrete outer layer involved great expense in prior art, improve whole
Body economy.On the other hand, cancel and prior art processes in containment the cooling of reactor core fused mass and the facility being detained, can be effective
Reduce containment volume, reduce equipment complexity in containment, improve economy further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of underground nuclear power station rock mass cavern type containment;
In figure: rock mass 1, rockmass modification layer 2, strengthen anchor pole 3, in containment steel liner 4, pressure vessel 5, reactor core fusing thing is received
Collection well 6, reactor core fused mass conveying pipe 7, core catch cavern 8, high-temperature heat exchanger 9, ground 10, core catch cavern cooling tube
11, pond, ground 12, containment heat exchanger 13.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail, but this embodiment should not be construed as right
The restriction of the present invention.
One underground nuclear power station rock mass cavern's type containment of the present invention as it is shown in figure 1, include ground installation and underground installation,
Ground installation includes the pond, ground 12 being positioned at ground more than 10, and underground installation includes the containment shell being positioned at ground less than 10
Body, reactor core fusing thing collects well 6 and core catch cavern 8, and containment shell passes sequentially through reactor core fused mass and collects well 6, reactor core
Fused mass conveying pipe 7 is connected with core catch cavern 8.Wherein, containment shell includes that rock mass 1, rock mass change the most successively
Make in layer 2 and containment steel liner 4, outside rockmass modification layer 2, be provided with the strengthening anchor pole 3 stretched in rock mass 1.Strengthening anchor pole 3
A diameter of 20mm~80mm, a length of 1200mm~2500mm;The thickness of rockmass modification layer 2 is 0.8m~1.8m, rockmass modification
At least one layer of layer 2;In containment steel liner, the thickness of 4 is 6mm~40mm.An access hole and one is at least opened on containment shell
Individual equipment gate, equipment gate is connected with underpass with access hole.Containment heat exchanger 13 is arranged in containment, safety
Shell heat exchanger 13 is connected with pond, ground 12 by core catch cavern cooling tube 11.Reactor core fused mass is collected well 6 and is positioned at pressure
Immediately below force container 5 outside rockmass modification layer 2.Core catch cavern 8 is positioned at below containment shell bottom water plane, and reactor core melts
Melting the thing conveying inclined layout of pipe 7, high-end connection reactor core fused mass collects well 6, and low side connects core catch cavern 8.Reactor core melts
Melt thing collection well 6, reactor core fused mass conveying pipe 7 and core catch cavern 8 hole wall and bottom arranges at least one of which reactor core fused mass
Expendable material, such as TiO2、Fe3O4、Al2O3Deng.Arranging high-temperature heat exchanger 9 in core catch cavern 8, high-temperature heat exchanger 9 leads to
Cross core catch cavern cooling tube 11 to be connected with pond, ground 12.
Existing experiment and theory all prove, rock mass has the anti-strike capability Zhang Dezhi of excellence, and high-strength steel bomb is to granite
The experimentation of positive penetration;Zhou Jiannan, penetration depth of projectiles into rock computing formula relative analysis;Young C.W., Penetration
Equation, has natural advantage in terms of resisting conventional weapon strike.The underground nuclear power station rock mass cavern that the present invention is carried
Type containment utilizes abundant rock mass 1 as containment layer structure, people outside to large aircraft shock, conventional weapon attack etc.
There is the protective of excellence for event.Secondly, the radioactive substance produced in major accident also can be played bag by abundant rock mass 1
The effect held, isolate, rock mass 1 structure also acts as distance protection and is physically isolated the effect of protection radioprotective,
When there is the major accidents such as molten heap, the containment heat exchanger 13 passive heat exchanging process by pond, ground 12
Constantly take the heat in containment out of.If accident deteriorates further, reactor core fused mass burn through pressure vessel 5, melts further downward
Wear containment, fall under gravity into reactor core fused mass and collect well 6, hereafter, flow into reactor core by reactor core fused mass conveying pipe 7
Collecting in cavern 8, in the process, reactor core fused mass collects well 6, reactor core fused mass conveying pipe 7 and core catch cavern 8 inwall
And the reactor core fused mass expendable material of bottom mixes with reactor core fused mass, constantly improve physical aspect and the heat transfer of reactor core fused mass
Characteristic.In core catch cavern 8, high-temperature heat exchanger 9 realizes passive heat exchange by pond, ground 12, is constantly melted by reactor core
Melt heat to derive, it is achieved the lasting cooling of reactor core fused mass.
The present invention improves the overall security of underground nuclear power station.On the other hand, cost during the present invention simplifies prior art
Expensive armored concrete outer layer, cancels and processes the cooling of reactor core fused mass and the facility being detained in prior art in containment, can
Effectively reduce containment volume, reduce equipment complexity in containment, improve economy.
Other unspecified part is prior art.The present invention is not strictly limited to above-described embodiment.
Claims (10)
1. a underground nuclear power station rock mass cavern type containment, including the pond, ground (12) resting on the ground and located underground
Containment shell, described containment shell has access hole and equipment gate, described equipment gate and access hole and leads to underground
Road is connected, it is characterised in that: described containment shell ecto-entad is disposed with rock mass (1), rockmass modification layer (2) and safety
Shell Leak-tight liner (4), described rockmass modification layer (2) outside is provided with the strengthening anchor pole (3) stretched in rock mass (1);Also include being positioned at
The reactor core fusing thing of underground collects well (6) and core catch cavern (8), and described reactor core fusing thing is collected well (6) and is positioned at containment
Below housing, and it is connected with core catch cavern (8) by reactor core fused mass conveying pipe (7).
A kind of underground nuclear power station rock mass cavern the most according to claim 1 type containment, it is characterised in that: described reactor core melts
Melt thing to collect outside the rockmass modification layer (2) that well (6) is positioned at immediately below containment inner pressure vessel (5).
A kind of underground nuclear power station rock mass cavern the most according to claim 1 type containment, it is characterised in that: also include arranging
Containment heat exchanger (13) in containment, described containment heat exchanger (13) passes through core catch cavern cooling tube
(11) it is connected with pond, ground (12).
A kind of underground nuclear power station rock mass cavern the most according to claim 1 type containment, it is characterised in that: described reactor core is received
Collection cavern (8) is positioned at below containment shell bottom water plane, and (7) inclined layout is managed in the conveying of described reactor core fused mass, high-end
Connecting reactor core fused mass and collect well (6), low side connects core catch cavern (8).
A kind of underground nuclear power station rock mass cavern the most according to claim 4 type containment, it is characterised in that: described reactor core is received
Arranging high-temperature heat exchanger (9) in collection cavern (8), described high-temperature heat exchanger (9) passes through core catch cavern cooling tube (11)
It is connected with pond, ground (12).
A kind of underground nuclear power station rock mass cavern the most according to claim 1 type containment, it is characterised in that: described rock mass changes
The thickness making layer (2) is 0.8m~1.8m, and in described containment steel liner, the thickness of (4) is 6mm~40mm.
A kind of underground nuclear power station rock mass cavern the most according to claim 6 type containment, it is characterised in that: described strengthening anchor
A diameter of 20mm~80mm of bar (3), a length of 1200mm~2500mm.
A kind of underground nuclear power station rock mass cavern the most according to claim 6 type containment, it is characterised in that: described rock mass changes
Make at least one layer of layer (2).
A kind of underground nuclear power station rock mass cavern the most according to claim 4 type containment, it is characterised in that: described reactor core melts
Melt thing to collect well (6), reactor core fused mass conveying pipe (7) and core catch cavern (8) hole wall and bottom to arrange reactor core fused mass sacrificial
Domestic animal material.
A kind of underground nuclear power station rock mass cavern the most according to claim 9 type containment, it is characterised in that: described reactor core
Fused mass expendable material is at least one layer.
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CN201610651692.5A CN106128520A (en) | 2016-08-10 | 2016-08-10 | A kind of underground nuclear power station rock mass cavern type containment |
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CN201610651692.5A CN106128520A (en) | 2016-08-10 | 2016-08-10 | A kind of underground nuclear power station rock mass cavern type containment |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109585042A (en) * | 2018-12-18 | 2019-04-05 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station antiseepage grotto type containment |
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