CN103696485B - A kind of nuclear island drainage device - Google Patents
A kind of nuclear island drainage device Download PDFInfo
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- CN103696485B CN103696485B CN201310613399.6A CN201310613399A CN103696485B CN 103696485 B CN103696485 B CN 103696485B CN 201310613399 A CN201310613399 A CN 201310613399A CN 103696485 B CN103696485 B CN 103696485B
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- nuclear island
- perforated pipe
- loaded filter
- drainage device
- draining perforated
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Abstract
The invention discloses a kind of nuclear island drainage device, belong to field of drainage facility.This dewatering installation comprises the draining perforated pipe (6) being arranged on bottom surface, base outside nuclear island structure, and draining perforated pipe (6) tube wall is provided with some inlet openings (7), and the outer of draining perforated pipe (6) is arranged with loaded filter.Dewatering installation of the present invention is by above arranging orderly inlet opening (7) at draining perforated pipe (6), simultaneously by the guide functions of loaded filter, the lower infiltration of nuclear island periphery can be collected in a organized way, and discharged in a organized way by draining perforated pipe (6), ensure that nuclear power plant nuclear island does not suffer groundwater erosion, improve the safety of nuclear island.
Description
Technical field
The present invention relates to surface water Yield rainfall relation facility field, be specifically related to a kind of nuclear island drainage device.
Background technology
Nuclear island is the most crucial safe structure of nuclear power plant, and the protection safety of nuclear island is the lifeline of nuclear safety.Current nuclear power plant nuclear island arrangement form all adopts semi-underground and half ground layout, wherein under ground portion nuclear island factory building is formed by excavation after-pouring concrete on platform elevation, the degree of depth of excavation is below platform elevation more than 10 ~ 20 meter, after nuclear island factory building has been constructed, structure periphery is backfilled by backfill.Backfill top terrace lays rubble.Under nominal situation, the crevice water of the rock mass 2 of nuclear island 1 periphery can flow to nuclear island structure exterior bottom by excavation face, ground rainfall 4 simultaneously also can by bottom backfill 3 seepage flow to nuclear island, and the water body 5 of these seepage flow can make nuclear island structure concrete parts be soaked by water body, as shown in Figure 1.Current waterproof measure mainly contains waterproof concrete, waterproof roll and water-repellent paint etc., in case the erosion of water-stop body 5 pairs of nuclear island 1 structure concrete and reinforcing bar, stops water body 5 to enter in nuclear island 1 structure.But in view of waterproofing materials has certain service life, and cannot carry out checking, keep in repair and changing after construction completes, consider the cycle of operation that nuclear power plant 40 years to 60 years is even longer, the immersion of long-time water body and erosion, can make nuclear island 1 concrete and reinforcing bar can be among the threat of water body invasion always.Nuclear island 1 surrounding water 5 also can make structure bear the impact of water pressure simultaneously, and water pressure is mainly lateral pressure and buoyancy, and the existence of water pressure is unfavorable for the seismic design of structure.Therefore, protect nuclear island by passive waterproof measure, for nuclear safety, this requires that for the highest structure be inadequate.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of nuclear island drainage device, collect and get rid of the lower permeable housing of nuclear island structure periphery, improving nuclear island safety.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of nuclear island drainage device, described dewatering installation comprises the draining perforated pipe being arranged on bottom surface, base outside nuclear island structure, and draining perforated pipe tube wall is provided with some inlet openings, and the outer of draining perforated pipe is arranged with loaded filter.
Further, a kind of nuclear island drainage device as above, described loaded filter comprises second layer loaded filter and is arranged on the first floor loaded filter of second layer loaded filter periphery.
Further, a kind of nuclear island drainage device as above, described first floor loaded filter and second layer loaded filter are made up of different graded sand and stones; First floor loaded filter is medium sand, and size grading is 1 ~ 5mm; Second layer loaded filter is gravel, and size grading is 4 ~ 15mm.
Further, a kind of nuclear island drainage device as above, the thickness of first floor loaded filter is 150mm, and the thickness of second layer loaded filter is 150mm.
Further, a kind of nuclear island drainage device as above, what inlet opening was orderly is arranged on draining perforated pipe, and the inlet opening of draining perforated pipe both sides is symmetrical.
Further, a kind of nuclear island drainage device as above, described inlet opening is arranged on the section horizon of draining perforated pipe, and with section horizon upper and lower become α angle position on; The scope of α is 25 degree ~ 35 degree.
Further, a kind of nuclear island drainage device as above, described draining perforated pipe is ductile iron pipe.
Further, a kind of nuclear island drainage device as above, the diameter of described draining perforated pipe is 200mm.
Further again, a kind of nuclear island drainage device as above, described inlet opening diameter is 10mm.
Further, a kind of nuclear island drainage device as above, the horizontal range between inlet opening is 50mm.
Beneficial effect of the present invention is: dewatering installation of the present invention, due to the existence of loaded filter and draining perforated pipe, the water body oozed under nuclear island periphery is filtered by loaded filter, and enter in draining perforated pipe through row inlet opening, because gutter has certain slope, water body can be drained in time, make down the water body oozed can not be accumulated in the outside of nuclear island structure, keep without the water body retained outside nuclear island, ensure that nuclear island does not soak by water body, nuclear island obtains safe protection.
Accompanying drawing explanation
Fig. 1 is existing nuclear island structure and periphery ground generalized section;
Fig. 2 is a kind of nuclear island drainage device of the present invention and nuclear island position relationship schematic diagram;
Fig. 3 is the structural representation of a kind of nuclear island drainage device of the present invention;
Fig. 4 is the generalized section of the draining perforated pipe of a kind of nuclear island drainage device of the present invention;
Fig. 5 is the sectional schematic diagram of the draining perforated pipe of a kind of nuclear island drainage device of the present invention;
Fig. 6 is that the gravel size graduation curve of first floor loaded filter and second layer loaded filter in embodiment is intended to.
Detailed description of the invention
Below in conjunction with Figure of description and detailed description of the invention, the present invention is described in further detail.
Fig. 3 shows the structural representation of a kind of nuclear island drainage device of the present invention, Fig. 2 shows this nuclear island drainage device and nuclear island position relationship schematic diagram, as can be seen from Figure, nuclear island drainage device of the present invention is positioned at outside nuclear island structure, bottom the foundation ditch of excavation, this dewatering installation mainly comprises draining perforated pipe 6 and loaded filter, and draining perforated pipe 6 is arranged on bottom surface, base outside nuclear island structure, draining perforated pipe 6 tube wall is provided with some inlet openings 7, and loaded filter is arranged on the periphery of draining perforated pipe 6.
Consider best anti-filter effect, loaded filter of the present invention adopts double-deck loaded filter, the first floor loaded filter 9 comprising second layer loaded filter 8 and be arranged on outside second layer loaded filter 8, the loaded filter of every layer is made up of different graded sand and stones, as shown in Figure 6, first floor loaded filter 9 is medium sand to the graded sand and stone composition of present embodiment, and size grading is 1 ~ 5mm, second layer loaded filter 8 is gravel, and size grading is 4 ~ 15mm.Fig. 3 shows the thickness of loaded filter in present embodiment, and the thickness h 1 of first floor loaded filter 9 is 150mm, and the thickness h 2 of second layer loaded filter 8 is 150mm.
In present embodiment, the ductile iron pipe of draining perforated pipe 6 to be diameters be 200mm, Fig. 4 and Fig. 5 respectively illustrates generalized section and the sectional schematic diagram of draining perforated pipe 6, what inlet opening 7 was orderly is distributed on draining perforated pipe 6, the inlet opening 7 of draining perforated pipe 6 both sides is symmetrical, be as the criterion with section at draining perforated pipe 6() central horizontal upper and lower one-tenth α angle position and Shang Bu hole, horizontal position, namely upper and lower inlet opening becomes α degree angle with horizon, the scope of α generally should get 25 degree ~ 35 degree, in present embodiment, α is 30 degree, as shown in Figure 5.Also show the horizontal range in present embodiment between inlet opening in Fig. 4, the horizontal range L between inlet opening 7 is 50mm, and inlet opening 7 diameter is 10mm.
The dewatering installation of the present invention roughly course of work is as follows: when the water body in ground rainfall 4, pit backfill soil 3 and the crevice water in rock mass 2 are seeped into bottom nuclear island 1 foundation ditch down under gravity, lower permeable housing 5 can enter the periphery of draining perforated pipe 6 by first floor loaded filter 9 and second layer loaded filter 8, inlet opening 7 on water perforated pipe 6 enters draining perforated pipe 6, because draining perforated pipe 6 has certain gradient, water water in pipe flows away, to reduce the water body around nuclear island 1, ensure nuclear island 1 not by immersion and the erosion of lower permeable housing.
Build at nuclear island structure, after foundation ditch periphery has backfilled, institute's water content and foundation ditch peripheral excavation face seepage flow water body in surface water body, backfill, all can be under gravity, under be seeped into foundation ditch bottom, nuclear island structure are peripheral, due to the existence of loaded filter, under the water body that oozes is very fast is filtered by loaded filter, and enter in gutter through the perforation of gutter, water body can be drained in time, make down the water body oozed can not be accumulated in the outside of nuclear island structure, keep without the water body retained outside nuclear island, nuclear island obtains safe protection.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technology thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a nuclear island drainage device, it is characterized in that: described dewatering installation comprises the draining perforated pipe (6) being arranged on bottom surface, base outside nuclear island structure, draining perforated pipe (6) tube wall is provided with some inlet openings (7), and the outer of draining perforated pipe (6) is arranged with loaded filter; Described loaded filter comprises second layer loaded filter (8) and is arranged on the peripheral first floor loaded filter (9) of second layer loaded filter (8); Described first floor loaded filter (9) and second layer loaded filter (8) are made up of different graded sand and stones; First floor loaded filter (9) is medium sand, and size grading is 1 ~ 5mm; Second layer loaded filter (8) is gravel, and size grading is 4 ~ 15mm.
2. a kind of nuclear island drainage device as claimed in claim 1, is characterized in that: the thickness of first floor loaded filter (9) is 150mm, and the thickness of second layer loaded filter (8) is 150mm.
3. a kind of nuclear island drainage device as claimed in claim 1, is characterized in that: what inlet opening (7) were orderly is arranged on draining perforated pipe (6), and the inlet opening (7) of draining perforated pipe (6) both sides is symmetrical.
4. a kind of nuclear island drainage device as claimed in claim 3, is characterized in that: described inlet opening (7) is arranged on the section horizon of draining perforated pipe (6), and with section horizon upper and lower become α angle position on; The scope of α is 25 degree ~ 35 degree.
5. a kind of nuclear island drainage device as claimed in claim 4, is characterized in that: described draining perforated pipe (6) is ductile iron pipe.
6. a kind of nuclear island drainage device as claimed in claim 5, is characterized in that: the diameter of described draining perforated pipe (6) is 200mm.
7. a kind of nuclear island drainage device as claimed in claim 6, is characterized in that: described inlet opening (7) diameter is 10mm.
8. a kind of nuclear island drainage device as claimed in claim 7, is characterized in that: the horizontal range between described inlet opening (7) is 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613399.6A CN103696485B (en) | 2013-11-27 | 2013-11-27 | A kind of nuclear island drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613399.6A CN103696485B (en) | 2013-11-27 | 2013-11-27 | A kind of nuclear island drainage device |
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| Publication Number | Publication Date |
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| CN103696485A CN103696485A (en) | 2014-04-02 |
| CN103696485B true CN103696485B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310613399.6A Active CN103696485B (en) | 2013-11-27 | 2013-11-27 | A kind of nuclear island drainage device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104060632B (en) * | 2014-06-13 | 2015-06-17 | 长江勘测规划设计研究有限责任公司 | Underground migration protective system for radioactive waste water of underground nuclear power station |
| WO2015188697A1 (en) * | 2014-06-13 | 2015-12-17 | 长江勘测规划设计研究有限责任公司 | Radioactive waste water underground migration protection system of underground nuclear power plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2307043Y (en) * | 1996-06-09 | 1999-02-10 | 唐善祥 | Percolation drain pipe |
| CN2380369Y (en) * | 1999-07-13 | 2000-05-31 | 聂再安 | Steel-fiber cement filtering water-drainage pipe |
| JP2006077536A (en) * | 2004-09-13 | 2006-03-23 | Totaku Industries Inc | Water permeable pipe for underground embedment |
| CN201144457Y (en) * | 2007-11-21 | 2008-11-05 | 王荣彦 | Novel drainpipe |
| CN202730935U (en) * | 2012-09-12 | 2013-02-13 | 长沙有色冶金设计研究院有限公司 | Collecting-and-seeping-type water drainage facility |
-
2013
- 2013-11-27 CN CN201310613399.6A patent/CN103696485B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2307043Y (en) * | 1996-06-09 | 1999-02-10 | 唐善祥 | Percolation drain pipe |
| CN2380369Y (en) * | 1999-07-13 | 2000-05-31 | 聂再安 | Steel-fiber cement filtering water-drainage pipe |
| JP2006077536A (en) * | 2004-09-13 | 2006-03-23 | Totaku Industries Inc | Water permeable pipe for underground embedment |
| CN201144457Y (en) * | 2007-11-21 | 2008-11-05 | 王荣彦 | Novel drainpipe |
| CN202730935U (en) * | 2012-09-12 | 2013-02-13 | 长沙有色冶金设计研究院有限公司 | Collecting-and-seeping-type water drainage facility |
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| CN103696485A (en) | 2014-04-02 |
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