CN107037474A - A kind of method of radioactivity geology Environment Investigation - Google Patents
A kind of method of radioactivity geology Environment Investigation Download PDFInfo
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- CN107037474A CN107037474A CN201710140524.4A CN201710140524A CN107037474A CN 107037474 A CN107037474 A CN 107037474A CN 201710140524 A CN201710140524 A CN 201710140524A CN 107037474 A CN107037474 A CN 107037474A
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Abstract
The invention belongs to radioactivity geology Environment Investigation technical field, and in particular to a kind of method of radioactivity geology Environment Investigation.Comprise the following steps：(1) threshold is determined：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radioactive anomaly, it is necessary to supervise；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal, limitation exploitation during 3700Bq/kg；It is radioactivity mineral-rich coal during specific activity >=3700Bq/kg, forbids exploitation；Bq/kg is shellfish g kg；(2) engineering spacing is determined；(3) unified physics amount：Make the data of all not commensurates utilized unified, and have a data relationship quantitatively or semi-quantitatively；(4) quantitative relationship is set up in data reduction；(5) controlled area is drawn a circle to approve：It is controlled area uniformly to use in all 1000Bq/kg separations of trap on specific radioactivity, geological map, circle, and outer circle is exempt zone.The present invention has obtained sufficient application in the radioactivity geology Environment Investigation of Yili Basin In Xinjiang the northern fringe, and effect is reliable, and foundation is provided for government regulation.
Description
Technical field
The invention belongs to radioactivity geology Environment Investigation technical field, and in particular to a kind of radioactivity geological environment shows
The method of shape investigation.
Background technology
China advocates the idea of development of " green, shared, innovation, coordination, exploitation " in recent years, abandons the exploitation of resource extensive style
Management mode, Mining Environment Conservation rises to unprecedented height.The normal association uranium ore of Xinjiang Coal resource, is restriction coal
The key factor of exploitation, therefore, autonomous district people's government has issued the uranium content limitation of coal mining in 1993 first
Directive standard, has issued exploitation of coal resources natural radionuclide limit standard for 2013.First in Yili Basin In Xinjiang
The northern fringe emphasis coal exploitation area has carried out radioactivity geology on-site investigation project, is national the first, belongs to demonstration project, it is intended to touch
Clear this area radioactive environment Current Situation, foundation is provided to delimit coal controlled area.
The content of the invention
It is an object of the invention to provide a kind of method of radioactivity geology Environment Investigation, to meet the demand.
To reach above-mentioned purpose, the technical solution used in the present invention is：
A kind of method of radioactivity geology Environment Investigation, comprises the following steps：
(1) threshold is determined：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radiation
Sexual abnormality is, it is necessary to supervise；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal, limitation exploitation during 3700Bq/kg；Specific activity
It is radioactivity mineral-rich coal during >=3700Bq/kg, forbids exploitation；Bq/kg is shellfish g kg；
(2) engineering spacing is determined；
(3) unified physics amount：Make the data of all not commensurates utilized unified, and have a number quantitatively or semi-quantitatively
According to relation, i.e., radionuclide unit conversion is carried out under U Ra equilibrium；
(4) data reduction, sets up quantitative relationship；
(5) controlled area is drawn a circle to approve：Specific radioactivity is uniformly used, in units of Bq/kg, trap is owned on geological map
It is controlled area in 1000Bq/kg separations, circle, outer circle is exempt zone.
Described (2) determine that the method for engineering spacing is：It is determined that being 1km × 1km, phase with coal exploration basic engineering spacing
When reconnoitring degree in colliery detailed survey；Using uranium exploration specification as supplement, radioactive anomaly area basic engineering spacing be 200m ×
200m, equivalent to uranium ore detailed survey working level.
The method of described (3) unified physics amount is：
1 μ R/h=1 gammas； (1)
1 μ R/h=0.258nC/ (kgh)； (2)
FD-3019 type γ-ray logging instrument uranium content sensitivity coefficient 0.01%eU, sensitivity 30.1nC/ (kgh) (3)
1×10-6(238U)=12.35Bq/kg； (4)
1×10-6(232Th)=4.046Bq/kg； (5)
1×10-6(226Ra)=3.656 × 106Bq/kg； (6)
1×10-2(40K)=317Bq/kg； (7)
All physical quantitys are unified to specific activity Bq/kg；μ R/h are microroentgen/hour；NC/ (kgh) be Na Ku/kilogram
Hour；Bq/kg is shellfish g kg, and eU is balance uranium.
Described (4) data reduction, the method for setting up quantitative relationship is：It is first according to natural gamma in collected data
High, normal, basic Three Estate, each 3, construction parameter hole carries out statistical analysis, by intending using Gamma irradiation dose rate and natural gamma
It is total to calculate, meet linear relationship, determine natural gamma x and quantitative gamma y quantitative relationship：Y=ax+b, a and b are different fields with "nine squares"
Fitting parameter.
Having the beneficial effect that acquired by the present invention：
The present invention is under the active support of the government, and coal exploration, uranium exploration, the environment that systematic collection is evaluated in area are commented
The basic radioactivity data of three industries of valency, refines and forms according to radioactive element migration, enrichment discipline, empirical tests are assessed as can
Believe appraisement system, technical thought is provided for similar projects, can promote in boundary or even the whole nation entirely.The present invention is in Yili Basin In Xinjiang the northern fringe
Radioactivity geology Environment Investigation in obtained sufficient application, effect is reliable, and foundation is provided for government regulation.This hair
It is bright to be related to influence evaluation of the radioactivity to surrounding enviroment and personnel in the coal resource key zones for development of uranium-bearing coal basin, accurately delimit
The radioactivity controlled area closed with coal facies, is to overcome " what is said or talked about uranium discoloration " key link during coal exploitation, is also government decision
Foundation and data supporting, this proprietary evaluation method are forward-looking, and its achievement has certain dissemination.It is of the invention effective
The data with different three's that ground solves different industries, formed according to different specification, over the years combines problem, meets anti-from environment
The angle of shield finds out this area radioactivity preservation present situation.The present invention precisely, conveniently, intuitively, strong operability, make full use of existing money
Material, simple flow saves working cost.
Brief description of the drawings
Fig. 1 is a kind of method flow diagram of radioactivity geology Environment Investigation；
Fig. 2 is radioactive anomaly distribution map in the blue or green coal seam of a band the 9th of Yili Basin the northern fringe flesh side and its top plate；
In figure：1st, coal borer hole and numbering are seen；2nd, coal hole is had no；3rd, coal seam boundary line；4th, seat earth contour and value；5、
Tomography and numbering；6th, radioactivity mineral-rich coal scope (3700Bg/kg) and numbering；7th, concomitant radioactivity coal scope (1000Bg/kg)
And numbering；8th, non-coal radioactive anomaly scope (1000Bg/kg) and numbering.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the method for radioactivity geology Environment Investigation of the present invention is as follows：
1st, operation principle
Because radioactivity geology Environment Investigation data source is in coal exploration, uranium exploration, three industries of environmental evaluation,
Its applicable norm, technical data and environmental protection standard are different, wherein, uranium ore Gamma irradiation dose rate (Na Ku/kilogram small
When), environmentally friendly specific radioactivity (shellfish g kg)；The maximum colliery data of accounting is not carved with natural gamma well logging majority
Scale determines data, belongs to qualitative property.Specific radioactivity is environmental evaluation standard, it is therefore desirable to by the unified conversion of other data
After specific radioactivity, you can delineation is exempted, supervision scope.Its process can determine engineering spacing by determining threshold, turn
Change physical quantity, quantitative relationship is set up in data reduction, five, delineation abnormality area step is completed.
2nd, method of work
(1) threshold is determined：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radiation
Sexual abnormality is, it is necessary to supervise；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal, limitation exploitation during 3700Bq/kg；Specific activity
It is radioactivity mineral-rich coal during >=3700Bq/kg, forbids exploitation.
(2) engineering spacing is determined：It is determined that being 1km × 1km with coal exploration basic engineering spacing, surveyed equivalent to colliery detailed survey
Look into degree；Using uranium exploration specification as supplement, radioactive anomaly area basic engineering spacing is 200m × 200m, detailed equivalent to uranium ore
Look into working level；
(3) unified physics amount：Make the data of all not commensurates utilized unified, and have a number quantitatively or semi-quantitatively
According to relation.Radionuclide unit conversion is carried out i.e. under U Ra equilibrium：
1 μ R/h=1 gammas； (1)
1 μ R/h=0.258nC/ (kgh)； (2)
FD-3019 type γ-ray logging instrument uranium content sensitivity coefficient 0.01%eU, sensitivity 30.1nC/ (kgh) (3)
1×10-6(238U)=12.35Bq/kg； (4)
1×10-6(232Th)=4.046Bq/kg； (5)
1×10-6(226Ra)=3.656 × 106Bq/kg； (6)
1×10-2(40K)=317Bq/kg； (7)
All physical quantitys are unified to specific activity (Bq/kg).Wherein：μ R/h are microroentgen/hour；NC/ (kgh) is to receive
Storehouse/kilogram hour；Bq/kg is shellfish g kg, and eU is balance uranium.
(4) data reduction, sets up quantitative relationship：It is first according to high, normal, basic three etc. of natural gamma in collected data
Level, each 3, construction parameter hole carries out statistical analysis using Gamma irradiation dose rate and natural gamma, by the Fitting Calculation, meets line
Sexual intercourse, determines natural gamma x and quantitative gamma y quantitative relationship：Y=ax+b, a and b are different field with "nine squares" fitting parameters.
(5) controlled area is drawn a circle to approve：Specific radioactivity is uniformly used, in units of Bq/kg, trap is owned on geological map
It is controlled area in 1000Bq/kg separations, circle, outer circle is exempt zone.
According to above-mentioned method of work, radioactivity controlled area such as Fig. 2 is filtered out in Yili Basin the northern fringe, wherein, an ore deposit 9K-1,
Lucky river 9B-1, Ji river 9Dj-1 are certain coal seam radioactivity controlled area, and coal resources forbid exploitation in the region, can in the range of other
Develop, foundation is provided for government decision, preventing coal resources random mining influences the random office of environment.
Claims (4)
1. a kind of method of radioactivity geology Environment Investigation, it is characterised in that：Comprise the following steps：
(1) threshold is determined：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is that radioactivity is different
Often, it is necessary to supervise；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal, limitation exploitation during 3700Bq/kg；Specific activity >=
It is radioactivity mineral-rich coal during 3700Bq/kg, forbids exploitation；Bq/kg is shellfish g kg；
(2) engineering spacing is determined；
(3) unified physics amount：Make the data of all not commensurates utilized unified, and there are a data quantitatively or semi-quantitatively to close
System, i.e., carry out radionuclide unit conversion under U Ra equilibrium；
(4) data reduction, sets up quantitative relationship；
(5) controlled area is drawn a circle to approve：Specific radioactivity is uniformly used, in units of Bq/kg, trap is owned on geological map
It is controlled area in 1000Bq/kg separations, circle, outer circle is exempt zone.
2. the method for radioactivity geology Environment Investigation according to claim 1, it is characterised in that：Described (2) are really
The method for determining engineering spacing is：It is determined that being 1km × 1km with coal exploration basic engineering spacing, journey is reconnoitred equivalent to colliery detailed survey
Degree；Using uranium exploration specification as supplement, radioactive anomaly area basic engineering spacing is 200m × 200m, equivalent to uranium ore detailed survey work
Make degree.
3. the method for radioactivity geology Environment Investigation according to claim 1, it is characterised in that：Described (3) system
The method of one physical quantity is：
1 μ R/h=1 gammas； (1)
1 μ R/h=0.258nC/ (kgh)； (2)
FD-3019 type γ-ray logging instrument uranium content sensitivity coefficient 0.01%eU, sensitivity 30.1nC/ (kgh) (3)
1×10-6(238U)=12.35Bq/kg； (4)
1×10-6(232Th)=4.046Bq/kg； (5)
1×10-6(226Ra)=3.656 × 106Bq/kg； (6)
1×10-2(40K)=317Bq/kg； (7)
All physical quantitys are unified to specific activity Bq/kg；μ R/h are microroentgen/hour；NC/ (kgh) is Na Ku/kilogram small
When；Bq/kg is shellfish g kg, and eU is balance uranium.
4. the method for radioactivity geology Environment Investigation according to claim 1, it is characterised in that：Described (4) number
According to conversion, the method for setting up quantitative relationship is：The high, normal, basic Three Estate of natural gamma in collected data is first according to, is respectively applied
3, work parameter hole, carries out statistical analysis using Gamma irradiation dose rate and natural gamma, by the Fitting Calculation, meets linear relationship,
Determine natural gamma x and quantitative gamma y quantitative relationship：Y=ax+b, a and b are different field with "nine squares" fitting parameters.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108446835A (en) * | 2018-03-02 | 2018-08-24 | 核工业二六大队 | Drilling radioactive anomaly comments sequence method in a kind of radioactivity GEOLOGICAL ENVIRONMENT SURVEY |
| CN109242289A (en) * | 2018-08-28 | 2019-01-18 | 江西核工业环境保护中心 | A kind of construction method of region naturally radioactive activety fault and evaluation system |
| CN111273332A (en) * | 2020-03-09 | 2020-06-12 | 中国地质调查局天津地质调查中心 | Open pit coal mine radioactive environment geological comprehensive investigation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108446835A (en) * | 2018-03-02 | 2018-08-24 | 核工业二六大队 | Drilling radioactive anomaly comments sequence method in a kind of radioactivity GEOLOGICAL ENVIRONMENT SURVEY |
| CN109242289A (en) * | 2018-08-28 | 2019-01-18 | 江西核工业环境保护中心 | A kind of construction method of region naturally radioactive activety fault and evaluation system |
| CN109242289B (en) * | 2018-08-28 | 2021-09-03 | 江西核工业环境保护中心 | Construction method of regional natural radioactive ecological environment investigation and evaluation system |
| CN111273332A (en) * | 2020-03-09 | 2020-06-12 | 中国地质调查局天津地质调查中心 | Open pit coal mine radioactive environment geological comprehensive investigation method |
| CN111273332B (en) * | 2020-03-09 | 2021-10-15 | 中国地质调查局天津地质调查中心 | Open pit coal mine radioactive environment geological comprehensive investigation method |
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Application publication date: 20170811 |