Test chamber for radon exhalation rate in soil

A technology of radon exhalation rate and test chamber, which is applied in the field of detection devices in the research of soil radon prevention and control, can solve the problems of large influence, heavy detection workload, and inability to quantitatively calculate the effect of radon prevention measures, so as to reduce the cost of radon prevention, Improvement of radon prevention effect and improvement of research efficiency

Active Publication Date: 2010-07-07
SHENZHEN INST OF BUILDING RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned research method for preventing radon and reducing radon has the following shortcomings: 1) the effect of various radon prevention measures cannot be quantitatively calculated, that is, the radon content in the future

Method used

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  • Test chamber for radon exhalation rate in soil
  • Test chamber for radon exhalation rate in soil
  • Test chamber for radon exhalation rate in soil

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Experimental program
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Embodiment 1

[0023] In this embodiment, the present invention includes a hatch 1 and a cabin 2, a clamping device 3 is arranged between the hatch 1 and the cabin 2, and high radon soil is housed in the cabin 2 4. A plurality of radon sampling boxes 7 are buried in the high radon soil 4, and the concrete ground model component 5 and the concrete building model component 6 are covered on the high radon soil 4; 5 and the concrete building model component 6 and the hatch cover 1 leave a space to form an air chamber 23, and a plurality of inlet and outlet air nozzles 24 are provided on the bulkhead of the air chamber position of the cabin body 2; Each radon sampling box 7 is connected to a plurality of gas inlet and outlet nozzles 9 distributed on the cabin wall through a radon gas sampling pipeline 8 .

[0024] The cabin body 2 described in this embodiment is a flat-bottomed cylindrical tank body, and a waterproof paint layer is provided on the inner wall surface of the cabin body 2 . The siz...

Embodiment 2

[0035] Its diameter of cabin body 2 described in the present embodiment is 3.5 meters, and its cabin height is 2.8 meters. In this embodiment, there are 15 radon sampling boxes, which are respectively arranged in the soil layer of high radon soil at 5 heights. The soil layers of the high radon soil at five heights are respectively located at 200mm, 700mm, 1200mm, 1700mm and 2200mm from the bottom of the cabin body 2, and three radon sampling boxes are distributed on each soil layer of different heights.

[0036] Other parts of this embodiment are identical to Embodiment 1.

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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: [0001] The invention relates to a soil radon exhalation rate test cabin, which belongs to the detection device in the research of soil radon prevention and control. Background technique: [0002] Both the World Health Organization and the International Atomic Energy Agency believe that radon in the air is one of the causes of human cancer and the second cause of lung cancer. The International Agency for Research on Cancer classifies radon as a Group I carcinogen. At present, the prevention and control of radon has been highly valued by European and American countries and the Chinese government. After investigating the national soil radon concentration distribution, the Swedish government made a regulation: higher than 50,000 Bq / m 3 It is required to avoid "high-risk areas" as much as possible when building residential houses. If it is necessary to build residential houses in "high-risk areas", radon prevention and radon reduction engineering measures must ...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/22
Inventor 罗刚陈泽广王喜元张阳符适
Owner SHENZHEN INST OF BUILDING RES
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