CN101769834B - Test chamber for radon exhalation rate in soil - Google Patents
Test chamber for radon exhalation rate in soil Download PDFInfo
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- CN101769834B CN101769834B CN 200910238931 CN200910238931A CN101769834B CN 101769834 B CN101769834 B CN 101769834B CN 200910238931 CN200910238931 CN 200910238931 CN 200910238931 A CN200910238931 A CN 200910238931A CN 101769834 B CN101769834 B CN 101769834B
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Abstract
The invention discloses a test chamber for the radon exhalation rate in soil, and belongs to a detection device in soil radon prevention research. The test chamber is characterized by comprising a chamber cover and a chamber body. A clamping device is arranged between the chamber cover and the chamber body. High-radon soil is filled in the chamber body, and a plurality of radon sampling boxes are embedded in the high-radon soil. A concrete ground model component and a concrete construction model component cover on the high-radon soil. A space is reserved between the concrete ground model component and the concrete construction model component and the chamber cover to form an air chamber. A plurality of air inlet/outlet nozzles are arranged on the chamber wall at the position of the air chamber of the chamber body, and the radon sampling boxes are connected to the plurality of air inlet/outlet nozzles which are distributed on the chamber wall through radon sampling pipelines. Through the test chamber, the earth and constructions are moved indoors for research, and the test chamber can simulate to test the indoor radon concentration of construction models under various environmental conditions, greatly improves the research efficiency, reduces the radon-preventing cost, and improves the radon-preventing effect.
Description
Technical field:
The present invention relates to a kind of test chamber for radon exhalation rate in soil, it belongs to the pick-up unit in the soil radon gas study on prevention.
Background technology:
The World Health Organization (WHO), International Atomic Energy Agency think that all airborne radon is one of reason that causes human cancer, are second reasons that causes lung cancer.International cancer research institution is classified as I class carcinogenic factor with radon.At present, the problem of preventing and treating of radon has obtained the great attention of American-European countries and Chinese Government.Swedish government is made regulation: be higher than 50,000 Bq/m after the national Soil Radon CONCENTRATION DISTRIBUTION of investigation
3The area be " high-risk area ", requirement is when building house, to avoid " high-risk area " as far as possible, if in the time of must building house in " high-risk area ", must take anti-radon to fall the radon engineering measure, for example, take aeration structure etc. under thickening reinforced concrete ground, the ground.CNS " civil building engineering indoor environmental pollution control standard ", " IAQ (indoor air quality) standard " are all classified radon as one of pollutant of indoor control, and the house of all radon concentration over-standards does not allow to be delivered for use.
The main method that the radon engineering and technological research takes falls in present anti-radon: 1) the existing building indoor environment is tested, the building that radon in the room air is exceeded standard is taked the brushing radon preventing paint, is increased measures such as resh air requirement and fall radon then.2) new building is taked to thicken anti-radon measures such as concrete foundation, raising basement waterproofing grade, the built on stilts floor of the first floor.When treating that new building is completed, carry out room air and detect, if radon still exceeds standard in the air, then by method 1) the radon processing falls.
The research method that radon falls in above-mentioned anti-radon is in following shortcoming: effect that 1) can't the various anti-radon measures of quantitative Analysis, promptly can't be when design radon contents in the room air in predict good future.For avoiding ad infinitum increasing cost, can only thicken " in right amount " base plate or outer wall of basement or " in right amount " raising classification of waterproof of building.Final effect could be surveyed after will waiting building to finish; 2) testing amount is big, and testing result is subjected to the influence of weather and environment big.
Summary of the invention:
The object of the present invention is to provide a kind of for the anti-radon of research buildings, fall radon the test chamber for radon exhalation rate in soil that detects data accurately be provided.
The object of the present invention is achieved like this:
A kind of test chamber for radon exhalation rate in soil is characterized in that it comprises hatchcover and cabin body, is provided with clamp device between described hatchcover and cabin body, and high radon soil is housed in the body of described cabin; In described high radon soil, be embedded with a plurality of radon sampling boxes; On described high radon soil, be coated with mattess model component and concrete construction model component, between described mattess model component and concrete construction model component and hatchcover, leave the space, constitute an air chamber, on the bulkhead of the air chamber position of described cabin body, be provided with a plurality of turnover valves; Described each radon sampling box is connected on the turnover valve that is distributed on the body wall of cabin by the radon gas sampling line.
Described cabin body is a flat cylindrical tank.
Its diameter of cabin body of described cylindrical tank is 2～3.5 meters, and it highly is 1.8～2.8 meters.
The shallow slot that is provided with suitable for reading at described cabin body is inlaid with O-ring seal in described shallow slot.
Described radon sampling box comprises a barrel-shaped box body, be arranged on the barrel-shaped box wall a plurality of pores be arranged on barrel-shaped box wall on be used for the connecting pipe that is connected with the radon gas sampling line.
Described a plurality of radon sampling box is separately positioned in the soil horizon of high radon soil of a plurality of height, and each soil aspect distributes on a plurality of radon sampling boxes.
Described radon sampling box is nine, is separately positioned in the soil horizon of high radon soil of three height every layer of three the radon sampling box that distributes.
Wrap up at the outside surface of described radon sampling box and to tie up one deck geotextile.
Inner wall surface at described cabin body is provided with the high molecular water-proof paint layer.
Be provided with the metal suspension ring of lifting carrying usefulness in the upper surface middle part of described hatchcover.
The present invention is equivalent to the earth and buildings are moved into indoor research, but BUILDINGS MODELS indoor radon concentration under the multiple ambient conditions of simulation test, improved research efficient greatly, prevent the radon cost for reducing, improve anti-radon effect, and at the beginning of concrete construction work design, just can predict and prevent that the radon effect provides possibility.
Description of drawings:
Accompanying drawing 1 is the structural representation of invention
Fig. 2 is the sectional structure synoptic diagram at the A-A position of Fig. 1 of the present invention
Fig. 3 is the structural representation of radon sampling box of the present invention
Embodiment:
Below in conjunction with accompanying drawing 1, Fig. 2 and Fig. 3, the present invention is further detailed:
Embodiment 1:
In the present embodiment, it comprises hatchcover 1, cabin body 2 the present invention, between described hatchcover 1 and cabin body 2, be provided with clamp device 3, high radon soil 4 is housed in described cabin body 2, in described high radon soil 4, be embedded with a plurality of radon sampling boxes 7, on described high radon soil 4, be coated with mattess model component 5 and concrete construction model component 6; Between described mattess model component 5 and concrete construction model component 6 and hatchcover 1, leave the space, constitute an air chamber 23, on the bulkhead of the air chamber position of described cabin body 2, be provided with a plurality of turnover valves 24; Described each radon sampling box 7 is connected on a plurality of turnover valves 9 that are distributed on the body wall of cabin by a radon gas sampling line 8.
Described in the present embodiment cabin body 2 be a flat cylindrical tank, and be provided with the water-repellent paint layer in the inner wall surface of described cabin body 2.The size of described cabin body can design according to the needs that detect.In the present embodiment, cabin body 2 its diameters of described cylindrical tank are 2.0 meters, 1.8 meters of its height.Hatchcover 1 adopts organic glass to make, and the lower surface of hatchcover 1 should be smooth smooth, so that sealing.The middle part, surface is provided with the metal suspension ring 12 of lifting carrying usefulness thereon.
In order to guarantee the sealing effectiveness in the body of cabin of the present invention, the shallow slot 22 that is provided with suitable for reading at described cabin body is inlaid with O-ring seal 21 in described shallow slot 22.
Described radon sampling box 7 comprises a barrel-shaped box body 71, be arranged on the barrel-shaped box wall a plurality of pores be arranged on barrel-shaped box wall on be used for the connecting pipe 73 that is connected with radon gas sampling line 8.The bleeder vent 72 that even perforate is arranged on described its barrel-shaped box wall in the present embodiment.In order to obtain the detection data of multiple spot, a plurality of radon sampling boxes 7 need be set, and described a plurality of radon sampling box 7 need be provided with respectively in the soil horizon of high radon soil of differing heights.Described in the present embodiment radon sampling box 7 is nine, is separately positioned in the soil horizon of high radon soil of three height, and there are three radon sampling boxes on each aspect top.The soil horizon of the high radon soil of its three height lays respectively at apart from cabin body 2 bottom 200mm, 700mm and 1200mm place.In order to prevent that soil from entering in the radon sampling box by bleeder vent 72, wrap up at the outside surface of described radon sampling box 7 and tie up one deck geotextile.When the concrete construction model component that is studied has simulation " basement ", the radon sampling box of the aspect in the top can be removed one, keep two radon sampling boxes and get final product.
Installation mattess model component 5 and concrete construction model component 6 above the high radon soil in the body of cabin.In the present invention, described high radon soil is meant radon concentration soil with high.All assembly unit seams of mattess model component 5 and concrete construction model component 6 all need adopt the silicone sealant sealing.
Principle of work of the present invention:
1) adopts flow gas to survey the radon mode, for example select RAD7 emanometer (continuously-running is more than 10 days).By being installed in a pair of turnover valve on the measurand wall, can carry out the control of resh air requirement to measurand.Test can be carried out under the state of different resh air requirements.
2) after the filling of high radon soil finishes, build transparency canopy.By control to the place room temperature, but the radon concentration in the analog detection Various Seasonal test chamber upper air chamber.Extrapolate under the Various Seasonal condition eduction rate of radon in the soil thus.
3) on soil, lay concrete ground surface model member 5.But the eduction rate of radon under the simulation test sealing hard ground situation.
4) on soil, build concrete construction model component 6.Soil around the BUILDINGS MODELS is sealed or afforests or lay permeable brick etc.But BUILDINGS MODELS indoor radon concentration under the multiple ambient conditions of simulation test.
5) be embedded in the variation that sampling box in the soil is used to detect Soil Radon concentration.The detection method of Soil Radon adopts FD3017 Soil Radon tester to carry out.
Embodiment 2:
Other parts and the embodiment 1 of present embodiment are identical.
Claims (10)
1. a test chamber for radon exhalation rate in soil is characterized in that it comprises hatchcover (1) and cabin body (2), is provided with clamp device (3) between described hatchcover (1) and cabin body (2), and high radon soil (4) is housed in described cabin body (2); In described high radon soil (4), be embedded with a plurality of radon sampling boxes (7); On described high radon soil (4), be coated with mattess model component (5) and concrete construction model component (6), between described mattess model component (5) and concrete construction model component (6) and hatchcover (1), leave the space, constitute an air chamber (23), on the bulkhead of the air chamber position of described cabin body (2), be provided with a plurality of turnover valves (24); Described each radon sampling box (7) is connected on the turnover valve (9) that is distributed on the body wall of cabin by radon gas sampling line (8).
2. the test chamber for radon exhalation rate in soil described in claim 1 is characterized in that described cabin body (2) is a flat cylindrical tank.
3. the test chamber for radon exhalation rate in soil described in claim 2 is characterized in that its diameter of cabin body (2) of described cylindrical tank is 2～3.5 meters, and it highly is 1.8～2.8 meters.
4. the test chamber for radon exhalation rate in soil described in claim 1 or 2 or 3 is characterized in that the shallow slot (22) that is provided with suitable for reading at described cabin body, is inlaid with O-ring seal (21) in described shallow slot (22).
5. the test chamber for radon exhalation rate in soil described in claim 1, it is characterized in that described radon sampling box (7) comprise a barrel-shaped box body (71), be arranged on the barrel-shaped box wall a plurality of pores (72) be arranged on barrel-shaped box wall on be used for the connecting pipe (73) that is connected with radon gas sampling line (8).
6. the test chamber for radon exhalation rate in soil described in claim 1 or 5 is characterized in that described a plurality of radon sampling boxes (7) are separately positioned in the soil horizon of high radon soil of a plurality of height, and each soil aspect distributes on a plurality of radon sampling boxes.
7. the test chamber for radon exhalation rate in soil described in claim 6 is characterized in that described radon sampling box (7) is nine, is separately positioned in the soil horizon of high radon soil of three height every layer of three the radon sampling box that distributes.
8. the test chamber for radon exhalation rate in soil described in claim 5 is characterized in that wrapping up at the outside surface of described radon sampling box (7) and ties up one deck geotextile.
9. the test chamber for radon exhalation rate in soil described in claim 1 is characterized in that being provided with the high molecular water-proof paint layer in the inner wall surface of described cabin body (2).
10. the test chamber for radon exhalation rate in soil described in claim 1 is characterized in that being provided with the metal suspension ring (12) that usefulness is carried in lifting in the upper surface middle part of described hatchcover (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910238931 CN101769834B (en) | 2009-12-30 | 2009-12-30 | Test chamber for radon exhalation rate in soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910238931 CN101769834B (en) | 2009-12-30 | 2009-12-30 | Test chamber for radon exhalation rate in soil |
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| CN101769834A CN101769834A (en) | 2010-07-07 |
| CN101769834B true CN101769834B (en) | 2011-08-24 |
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Families Citing this family (3)
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| CN105067789B (en) * | 2015-10-01 | 2016-10-05 | 南华大学 | A kind of method and apparatus of open loop type in site measurement water body precipitation rate of radon |
| CN105510089A (en) * | 2016-01-11 | 2016-04-20 | 南华大学 | Radon collector with self-stirring and uniform gas extracting functions |
| CN105738937A (en) * | 2016-04-29 | 2016-07-06 | 成都理工大学 | Static alpha-cup multifunctional emanometer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880973A (en) * | 1988-07-15 | 1989-11-14 | Reynolds John D | Ground radon flux sampling device |
| CN201207026Y (en) * | 2008-05-20 | 2009-03-11 | 东华理工大学 | Radioactive aerosol generating and sampling apparatus in radon chamber |
| CN201589732U (en) * | 2009-12-30 | 2010-09-22 | 深圳市建筑科学研究院有限公司 | Soil radon exhalation rate test cabin |
-
2009
- 2009-12-30 CN CN 200910238931 patent/CN101769834B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880973A (en) * | 1988-07-15 | 1989-11-14 | Reynolds John D | Ground radon flux sampling device |
| CN201207026Y (en) * | 2008-05-20 | 2009-03-11 | 东华理工大学 | Radioactive aerosol generating and sampling apparatus in radon chamber |
| CN201589732U (en) * | 2009-12-30 | 2010-09-22 | 深圳市建筑科学研究院有限公司 | Soil radon exhalation rate test cabin |
Non-Patent Citations (3)
| Title |
|---|
| JP特开平5-126993A 1993.05.25 |
| 李先杰等.氡析出率测量仪的检定装置.《辐射防护》.2008,第28卷(第4期),197-201. * |
| 杨亚新等.用双滤膜法测定氡析出率的实验研究.《科技通报》.2002,第18卷(第1期),38-42. * |
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Owner name: SHENZHEN INSTITUTE OF BUILDING RESEARCH CO., LTD. Free format text: FORMER NAME: SHENZHEN BUILDING SCIENCE RESEARCH INSTITUTE CO., LTD. |
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Address after: Three road 518031 in Guangdong province Shenzhen Futian District, Mei Ao No. 29 Patentee after: Shenzhen Institute of Building Research Co., Ltd. Address before: 518031 Guangdong Province, Shenzhen Futian District, Mei Ao three road No. 29 building 10 floor of Building Science Patentee before: Shenzhen Building Science Research Institute Co., Ltd. |