CN111562147B - Soil radon concentration detection device capable of improving detection accuracy - Google Patents
Soil radon concentration detection device capable of improving detection accuracy Download PDFInfo
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- CN111562147B CN111562147B CN202010489555.2A CN202010489555A CN111562147B CN 111562147 B CN111562147 B CN 111562147B CN 202010489555 A CN202010489555 A CN 202010489555A CN 111562147 B CN111562147 B CN 111562147B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
Abstract
The invention provides a soil radon concentration detection device capable of improving detection accuracy, which comprises a punching mechanism, wherein the punching mechanism comprises a steel chisel, a shell and a soil container for storing soil, a first internal thread and a first external thread are respectively arranged on the inner surface and the outer surface of the shell, the lower part of the steel chisel is provided with a pointed end, the outer surface of the steel chisel is provided with a second external thread matched with the first internal thread, the middle part of the soil container is provided with a through hole extending along the vertical direction, the inner surface of the through hole is provided with a second internal thread matched with the first external thread, the inner surface of the through hole is provided with a soil leakage port extending along the left-right direction, the horizontal height of the upper end of the shell is higher than that of the soil leakage port, and the horizontal height of the upper end of the steel chisel is higher than that of the upper end of the shell. The punching mechanism is matched with the activated carbon sampler, so that the exposure area of the sampling hole is reduced, the exposure time of the sampling hole is shortened, and radon gas in soil is effectively prevented from escaping from the sampling hole, so that the accuracy of a detection result is improved.
Description
The application has the subject name of 'one' for application number 201810325678.5, application date of 2018, 4 and 12 months
A detection method for collecting radon concentration in soil, and provides a divisional application.
Technical Field
The invention relates to the field of nuclear radiation detection, in particular to a soil radon concentration detection device capable of improving detection accuracy.
Background
Radon is a radioactive inert gas, which generates alpha rays during decay to cause carcinogenesis, and is one of 19 carcinogenic factors recognized by the world health organization. Generally, natural radioactive substances are difficult to enter human bodies, but radon gas which runs into air from rock soil and soil easily enters lungs along with the breathing of human bodies and goes to the whole body along with the flowing of blood to destroy cell and molecular structures, thereby causing harm to human bodies. Domestic and foreign researches show that the influence of underground geological structures on radon pollution in low-rise rooms of civil buildings is the most serious, and soil radon concentration detection is required when civil building engineering is accepted by mandatory requirements in indoor environmental pollution control regulations of civil building engineering issued by the ministry of construction in China.
The measurement method mainly comprises an instantaneous sampling measurement method, a continuous sampling measurement method and an accumulative sampling measurement method, wherein the accumulative sampling measurement method is commonly used for measuring the radon concentration in soil, and the active carbon measurement method is a commonly used accumulative sampling measurement method for measuring the radon concentration in soil. Adopt the drill rod to beat the sampling hole toward soil in the current testing process, then extract the drill rod and put into the sampling hole with the active carbon sample thief, if this in-process does not have in time when inserting the active carbon sample thief into the sampling hole after the drill rod is extracted, because the sampling hole has certain degree of depth and diameter, leads to in some radon gas loss in the sampling hole to the air, therefore causes the radon gas that the extraction was collected to reduce, influences the accuracy of testing result. A sample thief that soil radon detector that chinese novel patent 201420788092.X provided unites two into one drill bit and sampling rod, shortens the time of placing the sample thief, avoids the radon gas loss, has improved detection efficiency. However, this method is suitable for instantaneous sampling measurement, and is not suitable for accumulative sampling measurement requiring a long-term placement of an activated carbon sampler.
In view of the above problems, the applicant has made an intensive study on the above drawbacks in the prior art, and has devised the present application.
Disclosure of Invention
The invention aims to provide a soil radon concentration detection device for improving detection accuracy, effectively reducing the escape of radon gas in soil from a sampling hole, and improving the accuracy of a detection result.
The invention is realized by the following steps:
the soil radon concentration detection device capable of improving detection accuracy is provided, and the method comprises the following steps:
selecting sampling points: distributing a plurality of sampling points on the soil to be detected, wherein the sampling points are arranged in a grid shape;
secondly, sampling holes are drilled: punching a sampling hole into soil by a punching mechanism, wherein the punching mechanism comprises a drill steel, a shell and a soil container for storing soil, the inner surface and the outer surface of the shell are respectively provided with a first internal thread and a first external thread, the lower part of the drill steel is provided with a pointed end, the outer surface of the drill steel is provided with a second external thread matched with the first internal thread, the middle part of the soil container is provided with a through hole extending along the vertical direction, the inner surface of the through hole is provided with a second internal thread matched with the first external thread, the inner surface of the through hole is provided with a soil leakage port extending along the left and right direction, the drill steel and the soil container are respectively and spirally connected with the inner surface and the outer surface of the shell, the horizontal height of the upper end of the shell is higher than the horizontal height of the soil leakage port, and the horizontal height of the upper end of the drill steel is higher than the horizontal height of the shell; the shell comprises a body and two arc-shaped baffles, the upper ends of the two arc-shaped baffles are hinged to the lower end of the body, the lower ends of the two arc-shaped baffles enclose a punching hole, the tip of the drill rod is attached to the two arc-shaped baffles, the tip of the tip penetrates through the punching hole and is exposed downwards, the tip of the tip pricks soil downwards, then an iron hammer is used for beating the upper end of the drill rod, the drill rod and the shell are sunk into the soil to form a sampling hole, and the punched soil is filled in a soil container;
placing an active carbon sampler and filling the sampling hole: firstly, the drill steel is screwed upwards to be separated from the shell, then the activated carbon sampler is placed into the shell, then the shell is rotated upwards relative to the soil container, at the moment, the arc-shaped baffle of the shell is resisted by the activated carbon sampler to rotate downwards and ascend along with the body of the shell, soil begins to leak from the soil leakage opening when the shell rotates to the soil leakage opening of the soil container, and the shell is directly pulled out of the soil container after being completely separated from the soil container;
recording test data; the activated carbon sampler is placed in soil for a period of time, taken out and placed into a radon detector for measurement;
and analyzing and processing the test data.
The measurement result is influenced by the condition of pore forming, and preferably, the diameter of the sampling hole is 0.02m-0.04m, the depth of the sampling hole is 0.6m-0.8m, and the sampling hole is proper in size, so that the sampling of the activated carbon sampler is facilitated, and the consistency of the activated carbon sampler is maintained.
In order to ensure that the activated carbon can sufficiently adsorb radon gas, the activated carbon sampler is preferably placed in the soil for at least five days.
After the technical scheme is adopted, the soil radon concentration detection device capable of improving detection accuracy has the beneficial effects that the punching mechanism is matched with the activated carbon sampler, the steps of punching the sampling hole and filling the sampling hole are optimized, the exposure area of the sampling hole is reduced, the exposure time of the sampling hole is shortened, radon gas in soil is effectively prevented from escaping from the sampling hole, and therefore the accuracy of a detection result is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the drill steel extending into the housing;
FIG. 3 is a side view of the drill steel being removed from the housing.
Description of reference numerals:
1. a steel chisel 11, a second external thread 12 and a sharp head; 2. the device comprises a shell, 21, a first internal thread, 22, a first external thread, 23, a body, 24, an arc-shaped baffle, 25 and a punching hole; 3. the soil container 31, a second internal thread 32 and a soil leakage opening; 4. an active carbon sampler.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1-3, the invention provides a soil radon concentration detection device capable of improving detection accuracy, wherein the soil radon concentration detection device comprises the following steps:
sampling points are taken: lay a plurality of sampling point on the soil that awaits measuring, a plurality of sampling point is latticed and arranges, and the position of laying should cover as far as possible on the soil that awaits measuring, lets measure more accurate comprehensive.
Secondly, sampling holes are drilled: punch the sampling hole in the soil through mechanism of punching, the mechanism of punching includes drill rod 1, shell 2 and is used for storing the appearance native ware 3 of holding soil. The inner surface and the outer surface of the shell 2 are respectively provided with a first internal thread 21 and a first external thread 22, the lower part of the drill steel 1 is provided with a pointed head 12, the outer surface of the drill steel 1 is provided with a second external thread 11 matched with the first internal thread 21, the middle part of the soil container 3 is provided with a through hole extending along the up-down direction, the inner surface of the through hole is provided with a second internal thread 31 matched with the first external thread 22, the inner surface of the through hole is provided with a soil leaking port 32 extending along the left-right direction, the drill steel 1 and the soil container 3 are respectively and spirally connected with the inner surface and the outer surface of the shell 2, concretely, the drill steel 1 penetrates through the shell 2 and is spirally connected with the shell 2, the through hole of the soil container 3 is spirally sleeved outside the shell 2, the horizontal height of the upper end of the shell 2 is higher than the horizontal height of the soil leaking port 32, the horizontal height of the soil container 3 is higher than the horizontal height of the upper end of the shell 2, after the drilling is completed, the shell is screwed up, the horizontal height of the upper end of the steel chisel 1 is higher than the horizontal heights of the upper ends of the shell 2 and the soil container 3, and the hammer can be directly knocked.
This shell 2 includes body 23 and two cowl 24, the lower extreme at body 23 is articulated to the upper end of these two cowl 24, the lower extreme of two cowl 24 encloses into dozen drill way 25, as shown in fig. 2 and 3, two cowl 24 enclose into the structure of a similar round platform, the tip 12 of this drill rod 1 is laminated with two cowl 24 and the pointed end of tip 12 passes beat drill way 25 and expose downwards, the pointed end of tip 12 pricks soil downwards, that is to say, most sharp-pointed tip can direct contact soil through the drill way, performance sharp-pointed characteristics are in order to do benefit to quick punching, and there is the fender power of drill rod, the arc blocks the board and can not upwards rotate, then strike the upper end of drill rod 1 with the hammer, drill rod 1 and shell 2 are absorbed in soil simultaneously in order to form the sampling hole, and will beat soil dress in holding ware 3 for subsequent use.
Placing an active carbon sampler and filling the sampling hole 4: firstly, the drill rod 1 is screwed upwards to be separated from the shell 2, at the moment, the exposed soil area is only the area as large as the punching hole 25, and other parts of the sampling hole are shielded by the shell 2 and cannot be exposed, so that the exposed area of the soil is greatly reduced, and radon gas dissipation in the sampling hole is reduced. Then the activated carbon sampler 4 is put into the shell 2, then the shell 2 is rotated upwards relative to the soil container 3, the arc-shaped baffle plate 24 of the shell 2 is stopped by the activated carbon sampler 4 to rotate downwards in the process of slowly rising and then rises along with the body 23 of the shell 2, when the shell 2 rotates to the soil leakage opening 32 of the soil container 3, soil begins to leak from the soil leakage opening 32 and covers the activated carbon sampler 4, which is equivalent to the beginning of filling the sampling hole, when the shell 2 is completely separated from the soil container 3, the sampling hole formed by the shell 2 occupying soil is filled with soil, and then the soil container 3 is directly drawn out, in actual operation, the soil container 3 is not completely sunk into the soil, even most of the soil is arranged on the soil, so that the soil container can be conveniently pulled out, the occupied space of the soil is reduced, the burying efficiency is greatly improved, and the gas overflow of the soil is further reduced. The whole sampling hole landfill work is carried out, the sampling hole is in a relatively closed state, namely, the sampling hole is not communicated with the outside, and therefore radon gas cannot escape to the outside.
Recording test data; the activated carbon sampler 4 is placed in the soil for a period of time, taken out and placed into a radon detector for measurement;
and analyzing and processing the test data.
How the hole forming situation affects the measurement result, and in order to ensure that the sampling hole process is sequential and proper in size, the diameter of the sampling hole is preferably 0.02m-0.04m, and the depth of the sampling hole is preferably 0.6m-0.8 m. Is beneficial to taking and placing the active carbon sampler 4.
More preferably, to ensure that the activated carbon sampler 4 sufficiently adsorbs radon gas, the activated carbon sampler 4 is placed in the soil for at least five days.
In conclusion, the punching mechanism is matched with the activated carbon sampler, the steps of punching the sampling hole, placing the activated carbon sampler and burying the sampling hole are optimized, the exposure area of the sampling hole is greatly reduced and the exposure time of the sampling hole is shortened in the whole sampling process, and radon gas in soil is effectively prevented from escaping from the sampling hole, so that the radon concentration detection precision is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. A soil radon concentration detection device capable of improving detection accuracy is characterized by comprising a punching mechanism, wherein the punching mechanism comprises a steel chisel, a shell and a soil container for storing soil, the inner surface and the outer surface of the shell are respectively provided with a first internal thread and a first external thread, the lower part of the drill rod is provided with a tip, the outer surface of the drill rod is provided with a second external thread matched with the first internal thread, a through hole extending along the vertical direction is arranged in the middle of the soil container, a second internal thread matched with the first external thread is arranged on the inner surface of the through hole, the inner surface of the through hole is provided with a soil leakage port extending along the left-right direction, the steel chisel and the soil container are respectively and spirally connected with the inner surface and the outer surface of the shell, the horizontal height of the upper end of the shell is higher than that of the soil leakage opening, and the horizontal height of the upper end of the steel chisel is higher than that of the upper end of the shell; the shell comprises a body and two arc-shaped baffles, the upper ends of the two arc-shaped baffles are hinged to the lower end of the body, the lower ends of the two arc-shaped baffles surround an opening, the pointed end of the drill steel is attached to the two arc-shaped baffles, and the pointed end of the pointed end penetrates through the opening and is exposed downwards; also comprises an active carbon sampler arranged in the shell.
2. A soil radon concentration detection method for improving detection accuracy is characterized by comprising the following steps:
selecting sampling points: distributing a plurality of sampling points on the soil to be detected, wherein the sampling points are arranged in a grid shape;
secondly, sampling holes are drilled: punching a sampling hole into soil by a punching mechanism, wherein the punching mechanism comprises a drill steel, a shell and a soil container for storing soil, the inner surface and the outer surface of the shell are respectively provided with a first internal thread and a first external thread, the lower part of the drill steel is provided with a pointed end, the outer surface of the drill steel is provided with a second external thread matched with the first internal thread, the middle part of the soil container is provided with a through hole extending along the vertical direction, the inner surface of the through hole is provided with a second internal thread matched with the first external thread, the inner surface of the through hole is provided with a soil leakage port extending along the left and right direction, the drill steel and the soil container are respectively and spirally connected with the inner surface and the outer surface of the shell, the horizontal height of the upper end of the shell is higher than the horizontal height of the soil leakage port, and the horizontal height of the upper end of the drill steel is higher than the horizontal height of the shell; the shell comprises a body and two arc-shaped baffles, the upper ends of the two arc-shaped baffles are hinged to the lower end of the body, the lower ends of the two arc-shaped baffles enclose a punching hole, the tip of the steel chisel is attached to the two arc-shaped baffles, the tip of the tip penetrates through the punching hole and is exposed downwards, the tip of the tip pricks soil downwards, then an iron hammer is used for hitting the upper end of the steel chisel, the steel chisel and the shell are sunk into the soil to form a sampling hole, and the punched soil is filled in a soil container;
the diameter length of the sampling hole is 0.02m-0.04m, and the depth of the sampling hole is 0.6m-0.8 m;
placing an active carbon sampler and filling the sampling hole: firstly, the drill steel is screwed upwards to be separated from the shell, then the activated carbon sampler is placed into the shell, then the shell is rotated upwards relative to the soil container, at the moment, the arc-shaped baffle of the shell is resisted by the activated carbon sampler to rotate downwards and ascend along with the body of the shell, soil begins to leak from the soil leakage opening when the shell rotates to the soil leakage opening of the soil container, and the shell is directly pulled out of the soil container after being completely separated from the soil container;
the activated carbon sampler is placed in soil for at least five days;
recording test data; the activated carbon sampler is placed in soil for a period of time, taken out and placed into a radon detector for measurement;
and analyzing and processing the test data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010489555.2A CN111562147B (en) | 2018-04-12 | 2018-04-12 | Soil radon concentration detection device capable of improving detection accuracy |
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| CN201810325678.5A CN108519255B (en) | 2018-04-12 | 2018-04-12 | Detection method for collecting radon concentration in soil |
| CN202010489555.2A CN111562147B (en) | 2018-04-12 | 2018-04-12 | Soil radon concentration detection device capable of improving detection accuracy |
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| CN201810325678.5A Division CN108519255B (en) | 2018-04-12 | 2018-04-12 | Detection method for collecting radon concentration in soil |
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| CN111562147B true CN111562147B (en) | 2022-08-05 |
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| CN111141892B (en) * | 2020-03-06 | 2022-06-14 | 福建日新检测技术服务有限公司 | Soil radon concentration detection device for environment detection |
| CN112098625B (en) * | 2020-09-05 | 2022-10-25 | 宁波弘宇检测有限公司 | Radon gas detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744730A (en) * | 1997-02-14 | 1998-04-28 | Ballard; John H. | Subsurface in-situ radon gas detection/penetrometer system |
| CN204331045U (en) * | 2014-12-15 | 2015-05-13 | 河南众信质量检验技术研究有限公司 | A kind of sampler of Soil Radon detector |
| CN104677695A (en) * | 2015-02-10 | 2015-06-03 | 福建拓普检测技术有限公司 | Improved portable sampler |
| CN106370474A (en) * | 2016-08-26 | 2017-02-01 | 环境保护部南京环境科学研究所 | Sampling device and sampling method for water flow in soil |
| CN106769247A (en) * | 2016-12-23 | 2017-05-31 | 山东科技大学 | A kind of surface geochemical exploration adsorption filament is implanted into retracting device and application method |
| CN106932812A (en) * | 2015-12-30 | 2017-07-07 | 核工业北京地质研究院 | A kind of precession hole drilling type active charcoal bag gamma-ray spectrometry surveys radon method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880973A (en) * | 1988-07-15 | 1989-11-14 | Reynolds John D | Ground radon flux sampling device |
| CN201016878Y (en) * | 2006-10-30 | 2008-02-06 | 核工业北京地质研究院 | Soil radon trap sampling apparatus |
| CN201935837U (en) * | 2010-12-23 | 2011-08-17 | 核工业北京地质研究院 | Activated carbon absorber for collecting radon gas in soil |
| CN202661301U (en) * | 2012-04-13 | 2013-01-09 | 太原理工大学 | All-weather underground radon gas sampling device |
| CN203132886U (en) * | 2012-12-31 | 2013-08-14 | 中国人民解放军63653部队 | Double-filter membrane active carbon box used for sampling Rn-Tn and daughter of Rn-Tn |
| CN104213558B (en) * | 2014-08-26 | 2016-01-27 | 浙江冶民园林工程有限公司 | Mechanical punching stake |
| CN204462401U (en) * | 2015-03-09 | 2015-07-08 | 新奥气化采煤有限公司 | A kind of survey radon sampler |
| CN106018004B (en) * | 2016-06-24 | 2018-09-28 | 北京市环境保护科学研究院 | A kind of passive type soil gas acquisition method |
| CN205919996U (en) * | 2016-08-22 | 2017-02-01 | 中国地震局第一监测中心 | Novel fault gas special drill rod that punches |
| CN106873025A (en) * | 2017-04-10 | 2017-06-20 | 福建师范大学 | A kind of radon harvester and method |
-
2018
- 2018-04-12 CN CN201810325678.5A patent/CN108519255B/en active Active
- 2018-04-12 CN CN202010489555.2A patent/CN111562147B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744730A (en) * | 1997-02-14 | 1998-04-28 | Ballard; John H. | Subsurface in-situ radon gas detection/penetrometer system |
| CN204331045U (en) * | 2014-12-15 | 2015-05-13 | 河南众信质量检验技术研究有限公司 | A kind of sampler of Soil Radon detector |
| CN104677695A (en) * | 2015-02-10 | 2015-06-03 | 福建拓普检测技术有限公司 | Improved portable sampler |
| CN106932812A (en) * | 2015-12-30 | 2017-07-07 | 核工业北京地质研究院 | A kind of precession hole drilling type active charcoal bag gamma-ray spectrometry surveys radon method |
| CN106370474A (en) * | 2016-08-26 | 2017-02-01 | 环境保护部南京环境科学研究所 | Sampling device and sampling method for water flow in soil |
| CN106769247A (en) * | 2016-12-23 | 2017-05-31 | 山东科技大学 | A kind of surface geochemical exploration adsorption filament is implanted into retracting device and application method |
Non-Patent Citations (1)
| Title |
|---|
| 电子氡检测仪测定土壤中氡浓度方法的研究;顾淑清 等;《工程质量》;20061231(第12期);第1463-1466页 * |
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| CN111562147A (en) | 2020-08-21 |
| CN108519255B (en) | 2020-07-17 |
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