CN103913781B - Combined prospection method for predicting uranium ore body burial depth - Google Patents
Combined prospection method for predicting uranium ore body burial depth Download PDFInfo
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Abstract
The invention belongs to a uranium ore exploration method, and particularly relates to a combined prospection method for predicting the uranium ore body burial depth. Specifically, the method includes the following steps of determining measuring positions in a measuring area, measuring the content of ground gamma energy spectrum uranium at the measuring positions, measuring the content of instantaneous soil radon gas at each measuring position, taking soil samples at the measuring positions, airing, pulverizing and screening the soil samples, drying the soil samples, using agentia to extract component uranium in the dried soil samples, measuring and determining the extracted adsorbed state component uranium, making a plane contour map, circling an abnormal area, and predicting the uranium ore body burial depth according to abnormal combination conditions of the energy spectrum uranium, the instantaneous soil radon gas, the component uranium, the instantaneous soil radon gas / energy spectrum uranium ratio, the component uranium / energy spectrum uranium ratio and the component uranium / instantaneous soil radon gas ratio. According to the method, the misering workload can be greatly reduced, the prospecting hit rate is improved, and cost is reduced.
Description
Technical field
The invention belongs to a kind of uranium exploration method is and in particular to one kind is instantaneous by ground gamma spectrometry, soil
Radon survey and the combined detection method of ADSORPTION STATE component uranium measurement prediction uranium ore body buried depth information.
Background technology
Uranium resource is dual-use resource.With the fast development of national economy, in particular with the development of nuclear power, to uranium
Ore deposit demand is increasing, and uranium ore resource has become the mainstay of China's nuclear power sustainable development.With looking for the continuous of ore deposit degree
Deeply, most superficial ore deposits, footrail have been observed that, in recent years, geological prospecting gradually develops to depth direction, looks for deep concealed
Uranium ore body.With looking for continuing to increase of ore deposit depth, original routine exploration technique can not meet the needs of research and production, thus
Arise at the historic moment a series of Deep-penetrating Geochemistry Detection Techniques for reconnoitring deep concealed uranium deposit, such as ground vapour method, enzyme carry
Follow the example of, geo-electrochemistry method, metallic active state measurement method etc..These methods all can detect the uranium ore body in deep, but can not be given
Orebody buried depth information, is that later stage uranium exploration brings difficulty, is badly in need of a kind of detection method that can provide orebody buried depth.
Content of the invention
It is an object of the invention to provide a kind of combined detection method of prediction uranium ore body buried depth, the method can subtract significantly
Ore deposit hit rate, reduces cost are looked in probing workload, raising less.
Realize a kind of technical scheme of the object of the invention: combined detection method of prediction uranium ore body buried depth, the method is concrete
Comprise the following steps:
(1) determine measurement position in survey area；
(2) the gamma spectrometric uranium content of the measurement position determining in measurement above-mentioned steps (1)；
(3) measure the soil instantaneous radon gas content of each measurement position；
(4) measurement position determining in above-mentioned steps (1) takes pedotheque；
(5) pedotheque dried, pulverize, and sieve；
(6) pedotheque in above-mentioned steps (5) is dried；
(7) medicament is used to extract the ADSORPTION STATE component uranium in the pedotheque after drying through step (6)；
(8) measure the ADSORPTION STATE component uranium extracting in above-mentioned steps (7)；
(9) make plane equivalence；
(10) delineation abnormality area；
(11) according to power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio, absorption
The unusual combination situation of state component uranium/power spectrum uranium ratio, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio, prediction uranium ore body is buried
Deep.
Measurement position is determined using hand-held gps position finder in described step (1)；Gamma is used in described step (2)
Energy disperse spectroscopy measures gamma spectrometric uranium content；Emanometer is used to measure soil instantaneous radon gas content in described step (3).
The measurement position determining in above-mentioned steps (1) in described step (4) takes pedotheque.
In described step (5), the pedotheque obtaining in above-mentioned steps (4) is dried in the cool, pulverizes, and cross 80
Mesh sieve, takes the pedotheque of -80 mesh.
In described step (6), the pedotheque of -80 mesh in above-mentioned steps (5) is dried in 105 DEG C～110 DEG C of baking oven
1.5～2.5h.
Medicament in described step (7) is the mixed solution of ammonium citrate and ammonium carbonate.
High-resolution-Plasma-Mass Spectroscopy is adopted to measure ADSORPTION STATE component uranium in described step (8).
Sufer software development power spectrum uranium plane equivalence, soil instantaneous radon gas planar equivalent is used in described step (9)
Line chart, ADSORPTION STATE component uranium plane equivalence, the instantaneous radon gas of soil/power spectrum uranium ratio plane equivalence, ADSORPTION STATE component
Uranium/power spectrum uranium ratio plane equivalence, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio plane equivalence；
In described step (10), the concrete grammar of delineation exceptions area is as follows: determines background using iterating rejecting statistic law
Value, determines threshold value with background value plus 2 times of standard variance sums, and delineation is that power spectrum uranium is different more than the region of threshold value
Often area, soil instantaneous radon anomalies area, ADSORPTION STATE component uranium exceptions area, the instantaneous radon gas of soil/power spectrum uranium ratio exceptions area, absorption
State component uranium/power spectrum uranium ratio exceptions area, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio exceptions area.
In described step (11), prediction uranium ore body buried depth is divided into following 7 types:
1. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium exist extremely, and soil wink
When radon gas/power spectrum uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio when not having abnormal, show that uranium ore body buried depth is shallower, be located at
Stratum superficial part, that is, apart from 0 meter to 20 meters of earth's surface；
2. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio
Exist abnormal, and when power spectrum uranium, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not have abnormal, in showing that uranium ore body is located at
Deep, that is, apart from 20 meters to 300 meters of earth's surface；
3. in same measurement position, when ADSORPTION STATE component uranium exist abnormal, and the instantaneous radon gas of power spectrum uranium, soil do not exist different
Chang Shi, shows that uranium ore body is located at deep, is more than 300 meters apart from earth's surface.
4. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas/power spectrum of soil
Uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio exists extremely, and ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not exist
When abnormal, show that stratum superficial part and medium and deep have uranium ore body；
5. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, ADSORPTION STATE component uranium/power spectrum
Uranium ratio exists extremely, and when the instantaneous radon gas of soil/power spectrum uranium ratio does not have abnormal, shows that stratum superficial part and deep have uranium
Ore body；
6. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the ADSORPTION STATE component uranium/instantaneous radon of soil
Air ratio exists extremely, and when power spectrum uranium does not have abnormal, shows that stratum medium and deep and deep have uranium ore body；
7. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas/power spectrum of soil
When uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio all has abnormal, show
All there is uranium ore body in stratum superficial part, medium and deep and deep.
The Advantageous Effects of the present invention are: the method for the present invention is a kind of innovative combination side of prediction uranium ore body buried depth
Method.Can solve the problems, such as that conventional Geochemical Methods cannot predict uranium ore body buried depth from earth's surface always for a long time；Can be drilling project cloth
Administration provides important evidence, reduces target prospecting area, clear and definite Target For Drilling layer position, accelerates to look for ore deposit speed, reduces cost.This combined method
Middle power spectrum uranium, the instantaneous radon gas of soil visit method for uranium for geophysics；Component uranium visits uranium for the new geochemistry that the present invention researches and develops
Ore deposit method, the present invention is by two kinds of spy method for uranium combination application, especially with three kinds of method measurement data and its ratio
Seven kinds of contour exceptions area features of value, detect earth's surface more effective, more reliable to URANIUM DEPOSITS IN THE DEPTH body buried depth.
Brief description
Fig. 1 is the gamma spectrometric uranium plane equivalence making when being reconnoitred in somewhere using the present invention.
Fig. 2 is the soil making when being reconnoitred in areal using the present invention instantaneous radon gas plane equivalence.
Fig. 3 is the component uranium plane equivalence making when being reconnoitred in areal using the present invention.
Fig. 4 is the instantaneous radon gas of the soil making when being reconnoitred in areal using the present invention/gamma spectrometric uranium ratio
Plane equivalence.
Fig. 5 is component uranium/gamma spectrometric uranium ratio plane of making when being reconnoitred in areal using the present invention etc.
Value line chart.
Fig. 6 is the component uranium/soil instantaneous radon gas ratio planar equivalent making when being reconnoitred in areal using the present invention
Line chart.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.
A kind of combined detection method of prediction uranium ore body buried depth provided by the present invention, the method specifically includes following steps:
(1) determine measurement position in survey area
Determine measurement position using hand-held gps position finder in survey area.
(2) the gamma spectrometric uranium content of the measurement position determining in measurement above-mentioned steps (1)
The gamma spectrometric uranium content of each measurement point being determined in above-mentioned steps (1) using gamma spectrometer.
(3) measure the soil instantaneous radon gas content of each measurement position
Soil instantaneous radon gas value using each measurement position determining in emanometer measuring process (1).
(4) measurement position determining in above-mentioned steps (1) takes pedotheque
Take the pedotheque at 40～60cm with the measurement position that spade or hoe determine in above-mentioned steps (1).
(5) pedotheque dried, pulverize, and sieve
The pedotheque obtaining in above-mentioned steps (4) is dried in the cool, pulverizes, and crosses 80 mesh sieves, take the soil of -80 mesh
Earth sample.
(6) pedotheque in above-mentioned steps (5) is dried
The pedotheque of -80 mesh in above-mentioned steps (5) is dried in 105 DEG C～110 DEG C of baking oven 1.5～2.5h.
(7) medicament is used to extract the ADSORPTION STATE component uranium in the pedotheque after drying through step (6)
Medicament used is the mixed solution of ammonium citrate and ammonium carbonate, and the concentration of ammonium citrate is 0.10mol/l, ammonium carbonate
Concentration be 0.10mol/l.
(8) measure the ADSORPTION STATE component uranium extracting in above-mentioned steps (7)
Using the ADSORPTION STATE component uranium extracting in high-resolution-Plasma-Mass Spectroscopy determination step (7).
(9) make plane equivalence
As shown in Fig. 1～Fig. 6, with sufer software development power spectrum uranium plane equivalence, soil instantaneous radon gas planar equivalent
Line chart, ADSORPTION STATE component uranium plane equivalence, the instantaneous radon gas of soil/power spectrum uranium ratio plane equivalence, ADSORPTION STATE component
Uranium/power spectrum uranium ratio plane equivalence, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio plane equivalence.
(10) delineation abnormality area
Determine background value using iterating rejecting statistic law, determine threshold value with background value plus 2 times of standard variance sums,
Delineation more than threshold value region be power spectrum uranium exceptions area, soil instantaneous radon anomalies area, ADSORPTION STATE component uranium exceptions area,
The instantaneous radon gas of soil/power spectrum uranium ratio exceptions area, ADSORPTION STATE component uranium/power spectrum uranium ratio exceptions area, ADSORPTION STATE component uranium/soil
Instantaneous radon gas ratio exceptions area.
(11) according to power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio, absorption
The unusual combination situation of state component uranium/power spectrum uranium ratio, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio, prediction uranium ore body is buried
Deep, prediction uranium ore body buried depth is divided into following 7 types:
1. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium exist extremely, and soil wink
When radon gas/power spectrum uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio when not having abnormal, show that uranium ore body buried depth is shallower, be located at
Stratum superficial part, that is, apart from 0 meter to 20 meters of earth's surface；
2. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio
Exist abnormal, and when power spectrum uranium, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not have abnormal, in showing that uranium ore body is located at
Deep, that is, apart from 20 meters to 300 meters of earth's surface；
3. in same measurement position, when ADSORPTION STATE component uranium exist abnormal, and the instantaneous radon gas of power spectrum uranium, soil do not exist different
Chang Shi, shows that uranium ore body is located at deep, is more than 300 meters apart from earth's surface.
4. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas/power spectrum of soil
Uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio exists extremely, and ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not exist
When abnormal, show that stratum superficial part and medium and deep have uranium ore body；
5. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, ADSORPTION STATE component uranium/power spectrum
Uranium ratio exists extremely, and when the instantaneous radon gas of soil/power spectrum uranium ratio does not have abnormal, shows that stratum superficial part and deep have uranium
Ore body；
6. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the ADSORPTION STATE component uranium/instantaneous radon of soil
Air ratio exists extremely, and when power spectrum uranium does not have abnormal, shows that stratum medium and deep and deep have uranium ore body；
7. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas/power spectrum of soil
When uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio all has abnormal, show
All there is uranium ore body in stratum superficial part, medium and deep and deep.
Fig. 1～Fig. 6 be made using the present invention the gamma spectrometric uranium in somewhere, the instantaneous radon gas of soil, ADSORPTION STATE
The instantaneous radon gas of component uranium, soil/gamma spectrometric uranium ratio, ADSORPTION STATE component uranium/gamma spectrometric uranium ratio, ADSORPTION STATE
Component uranium/soil instantaneous radon gas ratio plane equivalence.Accurate according to the judgement predicting uranium ore body buried depth in above-mentioned steps (11)
4. article then, number exceptions area in Fig. 1～Fig. 3 meets, and the superficial part of this exceptions area and medium and deep have uranium ore body；In Fig. 2, Fig. 3
A number exceptions area 6. article meet, there is uranium ore body in the medium and deep of this exceptions area and deep.A number exceptions area in Fig. 3 meets
3. article, and the deep of this exceptions area has uranium ore body.
Above in conjunction with drawings and Examples, the present invention is explained in detail, but the present invention is not limited to above-mentioned enforcement
Example, in the ken that those of ordinary skill in the art possess, can also make on the premise of without departing from present inventive concept
Go out various change.The content not being described in detail in the present invention all can adopt prior art.
Claims (8)
1. a kind of combined detection method of prediction uranium ore body buried depth it is characterised in that: the method specifically includes following steps:
(1) determine measurement position in survey area；
(2) the gamma spectrometric uranium content of the measurement position determining in measurement above-mentioned steps (1)；
(3) measure the soil instantaneous radon gas content of each measurement position；
(4) measurement position determining in above-mentioned steps (1) takes pedotheque；
(5) pedotheque dried, pulverize, and sieve；
(6) pedotheque in above-mentioned steps (5) is dried；
(7) medicament is used to extract the ADSORPTION STATE component uranium in the pedotheque after drying through step (6)；
(8) measure the ADSORPTION STATE component uranium extracting in above-mentioned steps (7)；
(9) make plane equivalence；
(10) delineation abnormality area；
(11) divided according to power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio, ADSORPTION STATE
Amount uranium/power spectrum uranium ratio, the unusual combination situation of ADSORPTION STATE component uranium/soil instantaneous radon gas ratio, predict uranium ore body buried depth, institute
In the step (11) stated, prediction uranium ore body buried depth is divided into following 7 types:
1. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium exist extremely, and the instantaneous radon of soil
When gas/power spectrum uranium ratio, ADSORPTION STATE component uranium/power spectrum uranium ratio does not have abnormal, show that uranium ore body buried depth is shallower, positioned at stratum
Superficial part, that is, apart from 0 meter to 20 meters of earth's surface；
2. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio exist
Abnormal, and when power spectrum uranium, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not have abnormal, show that uranium ore body is located at medium and deep,
I.e. apart from 20 meters to 300 meters of earth's surface；
3. in same measurement position, when ADSORPTION STATE component uranium exists extremely, and there is not exception in the instantaneous radon gas of power spectrum uranium, soil
When, show that uranium ore body is located at deep, be more than 300 meters apart from earth's surface；
4. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio
Value, ADSORPTION STATE component uranium/power spectrum uranium ratio exists extremely, and ADSORPTION STATE component uranium/soil instantaneous radon gas ratio does not have exception
When, show that stratum superficial part and medium and deep have uranium ore body；
5. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, ADSORPTION STATE component uranium/power spectrum uranium ratio
Value exists extremely, and when the instantaneous radon gas of soil/power spectrum uranium ratio does not have abnormal, shows that stratum superficial part and deep have uranium ore
Body；
6. in same measurement position, when the instantaneous radon gas of soil, ADSORPTION STATE component uranium, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio
Value exists extremely, and when power spectrum uranium does not have abnormal, shows that stratum medium and deep and deep have uranium ore body；
7. in same measurement position, when power spectrum uranium, the instantaneous radon gas of soil, ADSORPTION STATE component uranium, the instantaneous radon gas of soil/power spectrum uranium ratio
When value, ADSORPTION STATE component uranium/power spectrum uranium ratio, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio all has abnormal, show stratum
All there is uranium ore body in superficial part, medium and deep and deep.
2. according to claim 1 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly determine measurement position using hand-held gps position finder in (1)；Gamma spectrometer measurement ground gal is used in described step (2)
Horse power spectrum uranium content；Emanometer is used to measure soil instantaneous radon gas content in described step (3).
3. according to claim 2 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly in (5), the pedotheque obtaining in above-mentioned steps (4) is dried in the cool, pulverizes, and cross 80 mesh sieves, take the soil of -80 mesh
Earth sample.
4. according to claim 3 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly in (6), the pedotheque of -80 mesh in above-mentioned steps (5) is dried in 105 DEG C～110 DEG C of baking oven 1.5～2.5h.
5. according to claim 4 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly the medicament in (7) is the mixed solution of ammonium citrate and ammonium carbonate.
6. according to claim 5 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly high-resolution-Plasma-Mass Spectroscopy is adopted to measure ADSORPTION STATE component uranium in (8).
7. according to claim 6 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly power spectrum uranium plane equivalence, soil instantaneous radon gas plane equivalence, ADSORPTION STATE component uranium plane isopleth are made in (9)
Figure, the instantaneous radon gas of soil/power spectrum uranium ratio plane equivalence, ADSORPTION STATE component uranium/power spectrum uranium ratio plane equivalence, suction
Attached state component uranium/soil instantaneous radon gas ratio plane equivalence.
8. according to claim 7 a kind of prediction uranium ore body buried depth combined detection method it is characterised in that: described step
Suddenly in (10), the concrete grammar of delineation exceptions area is as follows: determines background value using iterating rejecting statistic law, with background value plus 2 times of marks
Quasi- variance sum determines threshold value, and delineation is power spectrum uranium exceptions area, the instantaneous radon gas of soil more than the region of threshold value
Exceptions area, ADSORPTION STATE component uranium exceptions area, the instantaneous radon gas of soil/power spectrum uranium ratio exceptions area, ADSORPTION STATE component uranium/power spectrum uranium ratio
Value exceptions area, ADSORPTION STATE component uranium/soil instantaneous radon gas ratio exceptions area.
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| CN106840778B (en) * | 2015-12-04 | 2019-07-12 | 核工业北京地质研究院 | A kind of radioactivity survey method characterizing deep sandstone type uranium mineralization information |
| CN106526078B (en) * | 2016-10-28 | 2019-07-12 | 核工业北京地质研究院 | A kind of radon gas for extracting deep U metallogeny information-ground vapour union measuring method |
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