CN106990445A - The determination method on radioactive anomaly border in radioactivity geology Environment Investigation - Google Patents
The determination method on radioactive anomaly border in radioactivity geology Environment Investigation Download PDFInfo
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- CN106990445A CN106990445A CN201710133151.8A CN201710133151A CN106990445A CN 106990445 A CN106990445 A CN 106990445A CN 201710133151 A CN201710133151 A CN 201710133151A CN 106990445 A CN106990445 A CN 106990445A
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- 230000002285 radioactive effect Effects 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000011835 investigation Methods 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 53
- 230000000694 effects Effects 0.000 claims abstract description 32
- 229910052770 Uranium Inorganic materials 0.000 claims abstract description 22
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000002159 abnormal effect Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 14
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000013213 extrapolation Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 230000001568 sexual effect Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 12
- 239000011707 mineral Substances 0.000 abstract description 12
- 238000004321 preservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940091263 other mineral product in atc Drugs 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/04—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
- G01V5/08—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays
- G01V5/12—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using gamma or X-ray sources
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- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to radioactivity GEOLOGICAL ENVIRONMENT SURVEY technical field, and in particular to a kind of determination method on radioactive anomaly border in radioactivity geology Environment Investigation.1. background values is sought；2. screen abnormal；3. background values point is determined；4. Gamma logging data conversion；5. radioactive anomaly border is determined；6. radioactive anomaly classification delimited：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radioactive anomaly；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal during 3700Bq/kg；It is radioactivity mineral-rich coal during specific activity >=3700Bq/kg；7. radioactive anomaly scope is drawn a circle to approve.The inventive method is convenient and swift, using existing uranium, coal exploring drill hole Gamma logging data, is made using conventional planar figure, in different locations, the three dimensions of different depth, different types of all kinds of radioactive anomalies have been drawn a circle to approve by different preservation media.
Description
Technical field
The invention belongs to radioactivity GEOLOGICAL ENVIRONMENT SURVEY technical field, and in particular to a kind of radioactivity Status of Geological Environment is adjusted
Look into the determination method on middle radioactive anomaly border.
Background technology
Constructed in the mineral explorations such as uranium, coal substantial amounts of drilling, using Gamma logging data in radioactivity geological environment
Radioactive anomaly can be drawn a circle to approve in on-site investigation, including exempts border and radioactivity mineralising border.Coal exploration net degree is surveyed with uranium ore
Look into net degree inconsistent, usually, the engineering net of coal exploration is 2.5 times of uranium exploration net degree；Radioactive environment investigates mesh
It is inconsistent with mineral exploration purpose, radioactivity mineral exploration considers minimum mining width and average grade, environmental survey evaluation
Consider maximum and do not consider minimum mining width, environmental survey and the log data linear module that uranium, coal are reconnoitred are inconsistent, lead
Cause the determination on radioactive anomaly border different from traditional approach.
The content of the invention
It is an object of the invention to provide a kind of determination on radioactive anomaly border in radioactivity geology Environment Investigation
Method.
To reach above-mentioned purpose, the technical solution used in the present invention is：
The determination method on radioactive anomaly border, 1. seeks background values in a kind of radioactivity geology Environment Investigation；2. sieve
Choosing is abnormal；3. background values point is determined；4. Gamma logging data conversion；5. radioactive anomaly border is determined；6. radioactivity delimited different
Normal classification：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radioactive anomaly；Specific activity >=
1000Bq/kg and<It is concomitant radioactivity coal during 3700Bq/kg；It is radioactivity mineral-rich coal during specific activity >=3700Bq/kg；7. enclose
Determine radioactive anomaly scope.
Described background values method of 1. asking is：Gamma logging data in uranium, coal exploring drill hole are collected, enumeration district are counted non-
The average value of exceptional value is background values.
The abnormal method of described 2. screening is：According to drilling Gamma logging data point lithology statistics radioactive anomaly position,
Thickness, peak value.
Described 3. determination background values point methods are：Within engineering net, adjacent two drilling of control same layer position, when
One is radioactive anomaly hole, another non-abnormal hole, being set to background values boundary point at the 1/2 of engineering spacing；Work as radioactivity
When on the outside of abnormal hole without Engineering Control, being extrapolated for background values boundary point at the 1/2 of standard engineering spacing.
Described 4. Gamma logging data transfer device is：Y=ax+b, C=33.2 × 104Y, C ＇=12.35 × 106C,
Wherein, y is Gamma irradiation dose rate, and a, b are different regions fitting parameter, and x is natural gamma log value, and C is uranium content, and C ＇ are
Activity.
Described 5. determination radioactive anomaly boundary method is：Uranium content 0.0081% is equivalent to specific activity 1000Bq/kg
To exempt boundary value；Uranium content 0.03% is mineralising border equivalent to specific activity 3700Bq/kg.
Described 7. delineation radioactive anomaly range method is：
Within A, engineering net, two adjacent drillings of radioactivity high level are developed in same layer, can be directly by interpolation method
Insert and determine 1000Bq/kg, 3700Bq/kg equivalent point；
B, when one it is radioactive anomaly hole, another is non-abnormal hole, background values point and radiation on adjacent engineering line
Between sexual abnormality point, two equivalent points of 1000Bq/kg, 3700Bq/kg are determined using interpolation method；
C, on the outside of the radioactive anomaly hole without Engineering Control when, between the background values point and radioactive anomaly point of extrapolation, profit
Two equivalent points of 1000Bq/kg, 3700Bq/kg are determined with interpolation method；
It is that radioactivity exempts boundary line to connect the smooth line for the equivalent point that A, B, C are determined, i.e. 1000Bq/kg isopleth,
It is also radioactive anomaly lower limit boundary line, 3700Bq/kg isopleth is radioactivity mineralising boundary line, different to the radioactivity in coal seam
Often, as concomitant radioactivity coal therebetween；Coal seam boundary line is within 1/2 engineering spacing near radioactive anomaly hole
When, radioactive anomaly border is not determined by interpolation method in coal seam, is directly replaced with the coal seam boundary line less than interpolated value.
Having the beneficial effect that acquired by the present invention：
The present invention is in the work of Yili Basin the northern fringe emphasis coal exploitation area radioactivity geology Environment Investigation, to pass through
Summarize what is determined after exploring and verify repeatedly, from environmental angle, " as long as development radioactive anomaly just has radioactive pollution and radiation
The possibility that the hidden danger such as infringement are present ", using " radioactivity peak value " and " taking regional background at engineering spacing half ", interpolation method is determined
Radioactivity exempts border and radioactivity mineralising class border, draws a circle to approve out the radioactive anomaly available for environmental evaluation.It is of the present invention
Radioactivity exempt border and radioactivity mineralising border, minimum mining width is not considered, radioactivity GEOLOGICAL ENVIRONMENT SURVEY is only limitted to
Middle radioactive environment evaluation is utilized.
The inventive method is convenient and swift, using existing uranium, coal exploring drill hole Gamma logging data, uses conventional planar figure
Make, in different locations, the three dimensions of different depth, drawn a circle to approve different types of all kinds of radioactivity by different preservation media different
Often.Take background values at half between exceptional value hole and normal value hole or during abnormal extrapolation engineering spacing, eliminate colliery it is big between
Scale contradiction less than normal is developed away from probing and radioactivity mineral products.Radioactive anomaly areal concentration is exactly radioactive anomaly emphasis prison
Pipe location and environmental protection or prevention and cure of pollution key area, method of work have exemplary and replicability.Unified coal, uranium
Ore deposit, the radiological assessment unit of environmentally friendly tripartite and limit value.Establish radioactive anomaly side in radioactivity geology Environment Investigation
The determination method workflow on boundary.Natural gamma log data is determined to the serial conversion formula of specific activity.Between selected 1/2 engineering
It is regional background values point away from place, participates in the delineation of radioactive anomaly scope.Radioactive anomaly delineation does not consider thickness, counts radioactivity
Peak value is only taken during value.
The present invention relates to the determination on radioactive anomaly border in radioactivity geology Environment Investigation, " radioactive anomaly circle
It is fixed not consider thickness ", " taking peak value during statistics radioactive values ", " radioactive anomaly hole is taken at engineering spacing 1/2 with non-abnormal hole
Background values ", " taken when radioactive anomaly hole periphery is without Engineering Control at engineering spacing 1/2 is background values ", " radioactive anomaly hole week
The balk line enclosed less than the spacing of engineering net 1/2 can replace radioactive anomaly boundary line " it is innovative point, from environmental evaluation
Angle is set out, " changing Gamma logging data into specific radioactivity ", the specific activity 1000Bq/kg for determining uranium content 0.0081%
Boundary value is exempted for radioactivity, the specific activity 3700Bq/kg of uranium content 0.03% is radioactivity mineralising border (specific activity<
1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radioactive anomaly；For coal, specific activity >=1000Bq/
Kg and<It is concomitant radioactivity coal during 3700Bq/kg, is radioactivity mineral-rich coal during specific activity >=3700Bq/kg).Engineering in plane
The background values point set on line and two equivalent points of radioactive anomaly value interpolation 1000Bq/kg, 3700Bq/kg, each equivalence
The smooth line of point exempts boundary line or radioactivity mineralising boundary line for radioactivity.
Brief description of the drawings
Fig. 1 determines schematic diagram for drilling radioactive anomaly border；
Fig. 2 exempts border profile delineation schematic diagram for drilling radioactivity；
Fig. 3 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；9th, radioactivity high level drills；10th, radioactivity is normal
Hole；11st, the bottom numerical point determined；12nd, it is projected in the drilling on section；13rd, coal seam；14th, radioactive anomaly.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The determination method on radioactive anomaly border in a kind of radioactivity geology Environment Investigation of the present invention, including
Following steps：
1. background values is sought：Gamma logging data in uranium, coal exploring drill hole are collected, being averaged for the non-exceptional value of enumeration district is counted
It is worth for background values；
2. screen abnormal：According to drilling Gamma logging data point lithology statistics radioactive anomaly position, thickness, peak value；
3. background values point is determined：To eliminate the big spacing probing in colliery scale contradiction less than normal, work are developed with radioactivity mineral products
Within journey net degree, control same layer position it is adjacent two drilling, when one be radioactive anomaly hole, another non-abnormal hole,
It is set to background values boundary point at the 1/2 of engineering spacing (in such as Fig. 1 between ZK3 and ZK7)；Without engineering on the outside of radioactive anomaly hole
During control, being extrapolated for background values boundary point at the 1/2 of standard engineering spacing (ZK9 is left in such as Fig. 1)；
4. Gamma logging data conversion：Y=ax+b, C=33.2 × 104Y, C ＇=12.35 × 106C, wherein, y is gamma
Exposure rate, a, b are different regions fitting parameter, and x is natural gamma log value, and C is uranium content, and C ＇ are activity；
5. radioactive anomaly border is determined：Uranium content 0.0081% is exemption boundary value equivalent to specific activity 1000Bq/kg；
Uranium content 0.03% is mineralising border equivalent to specific activity 3700Bq/kg；
6. radioactive anomaly classification delimited：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is
Radioactive anomaly；Specific activity >=1000Bq/kg and<It is concomitant radioactivity coal during 3700Bq/kg；During specific activity >=3700Bq/kg
For radioactivity mineral-rich coal；
7. radioactive anomaly scope is drawn a circle to approve：
Within A, engineering net, two adjacent drillings of radioactivity high level are developed in same layer, can be directly by interpolation method
Insert and determine 1000Bq/kg, 3700Bq/kg equivalent point；
B, when one it is radioactive anomaly hole, another is non-abnormal hole, background values point and radiation on adjacent engineering line
Between sexual abnormality point, two equivalent points of 1000Bq/kg, 3700Bq/kg are determined using interpolation method；
C, on the outside of the radioactive anomaly hole without Engineering Control when, between the background values point and radioactive anomaly point of extrapolation, profit
Two equivalent points of 1000Bq/kg, 3700Bq/kg are determined with interpolation method；
It is that radioactivity exempts boundary line to connect the smooth line for the equivalent point that A, B, C are determined, i.e. 1000Bq/kg isopleth
(being also radioactive anomaly lower limit boundary line), 3700Bq/kg isopleth is radioactivity mineralising boundary line, to the radioactivity in coal seam
It is abnormal, as concomitant radioactivity coal therebetween；Coal seam boundary line is within 1/2 engineering spacing near radioactive anomaly hole
When, radioactive anomaly border is not determined by interpolation method in coal seam, is directly replaced with the coal seam boundary line less than interpolated value (in Fig. 2
Top between ZK2 and ZK3 is abnormal).
In the work of Yili Basin In Xinjiang the northern fringe emphasis coal exploitation area radioactivity geology Environment Investigation, using
Uranium, coal exploring drill hole Gamma logging data, using this method, in different locations, the three dimensions of different depth, assigned by different
Deposit medium to have drawn a circle to approve different types of all kinds of radioactive anomalies and exempted scope (such as Fig. 3), drilling radioactive anomaly 127 is irised out altogether
Piece, wherein concomitant radioactivity coal 26, radioactivity mineral-rich coal 9, non-coal radioactive anomaly 92 delimited radioactive anomaly and concentrated
At region 7, radioactive anomaly distributed area is exactly radioactivity supervision key sections and environmental protection or prevention and cure of pollution key area.
This method is repeatedly determining that concrete application contrast is as follows on the basis of proving and comparisom repeatedly：Without radioactivity
During peak value, leakage circle radioactivity mineral-rich coal in part location can be caused using average；Bottom numerical point is not set at the half of engineering spacing, is put
Penetrate the radioactive anomaly scope directly drawn a circle to approve with non-abnormal hole interpolation method in sexual abnormality hole substantially bigger than normal.Therefore this method is visiting coal work
Radioactive anomaly is drawn a circle to approve in journey to work well, and with exemplary and replicability, in coal preservation area and can carry out radioactivity
Other mineral products preservation area popularization and application of well logging.
Claims (7)
1. a kind of determination method on radioactive anomaly border in radioactivity geology Environment Investigation, it is characterised in that：1. this is asked
Floors；2. screen abnormal；3. background values point is determined；4. Gamma logging data conversion；5. radioactive anomaly border is determined；6. delimit
Radioactive anomaly classification：Specific activity<1000Bq/kg supervises class to exempt；Specific activity >=1000Bq/kg is radioactive anomaly；Than
Activity >=1000Bq/kg and<It is concomitant radioactivity coal during 3700Bq/kg；It is radioactivity mineralising during specific activity >=3700Bq/kg
Coal；7. radioactive anomaly scope is drawn a circle to approve.
2. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：Described background values method of 1. asking is：Gamma logging data in uranium, coal exploring drill hole are collected, enumeration district is counted
The average value of non-exceptional value is background values.
3. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：The abnormal method of described 2. screening is：According to drilling Gamma logging data point lithology statistics radioactive anomaly position,
Thickness, peak value.
4. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：Described 3. determination background values point methods are：Within engineering net, adjacent two drilling of control same layer position,
It is radioactive anomaly hole when one, another non-abnormal hole, being set to background values boundary point at the 1/2 of engineering spacing；Work as radiation
When on the outside of sexual abnormality hole without Engineering Control, being extrapolated for background values boundary point at the 1/2 of standard engineering spacing.
5. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：Described 4. Gamma logging data transfer device is：Y=ax+b, C=33.2 × 104Y, C ＇=12.35 × 106C,
Wherein, y is Gamma irradiation dose rate, and a, b are different regions fitting parameter, and x is natural gamma log value, and C is uranium content, and C ＇ are
Activity.
6. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：Described 5. determination radioactive anomaly boundary method is：Uranium content 0.0081% is equivalent to specific activity 1000Bq/kg
To exempt boundary value；Uranium content 0.03% is mineralising border equivalent to specific activity 3700Bq/kg.
7. the determination method on radioactive anomaly border in radioactivity geology Environment Investigation according to claim 1, its
It is characterised by：Described 7. delineation radioactive anomaly range method is：
Within A, engineering net, two adjacent drillings of radioactivity high level are developed in same layer, can be directly true by interpolation method interpolation
Determine 1000Bq/kg, 3700Bq/kg equivalent point；
B, when one it is radioactive anomaly hole, another is non-abnormal hole, and background values point and radioactivity are different on adjacent engineering line
Often between point, two equivalent points of 1000Bq/kg, 3700Bq/kg are determined using interpolation method；
C, on the outside of the radioactive anomaly hole without Engineering Control when, between the background values point and radioactive anomaly point of extrapolation, using inserting
Value method determines two equivalent points of 1000Bq/kg, 3700Bq/kg；
It is that radioactivity exempts boundary line to connect the smooth line for the equivalent point that A, B, C are determined, i.e. 1000Bq/kg isopleth, is also
Radioactive anomaly lower limit boundary line, 3700Bq/kg isopleth is radioactivity mineralising boundary line, to the radioactive anomaly in coal seam,
Therebetween it is concomitant radioactivity coal；When coal seam boundary line is within 1/2 engineering spacing near radioactive anomaly hole, coal
Radioactive anomaly border is not determined by interpolation method in layer, is directly replaced with the coal seam boundary line less than interpolated value.
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Cited By (2)
| 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 |
| CN110764163A (en) * | 2019-11-15 | 2020-02-07 | 四川省核工业地质局二八二大队 | Pegmatite lithium ore delineation method based on gamma total amount and high-density electrical measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN110764163A (en) * | 2019-11-15 | 2020-02-07 | 四川省核工业地质局二八二大队 | Pegmatite lithium ore delineation method based on gamma total amount and high-density electrical measurement |
| CN110764163B (en) * | 2019-11-15 | 2021-06-08 | 四川省核工业地质局二八二大队 | Pegmatite lithium ore delineation method based on gamma total amount and high-density electrical measurement |
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