CN114352260B - Method for accurately measuring thermohydraulic uranium mineralized body occurrence - Google Patents
Method for accurately measuring thermohydraulic uranium mineralized body occurrence Download PDFInfo
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- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
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- BBNISNJBVLWCLJ-UHFFFAOYSA-N titanium uranium Chemical compound [Ti].[U].[U] BBNISNJBVLWCLJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
- E21B47/0025—Survey of boreholes or wells by visual inspection generating an image of the borehole wall using down-hole measurements, e.g. acoustic or electric
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- General Life Sciences & Earth Sciences (AREA)
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- Geophysics (AREA)
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Abstract
The invention belongs to the field of uranium mine exploration and ore forming rule research, and particularly relates to a method for accurately determining the occurrence of a hydrothermal uranium mineralizer, which comprises the following steps: step 1, researching a mining geological background and mining conditions of a working area, and determining a mining target area; step 2, determining the position and mineralization intensity of the uranium body exposed in drilling by geophysical prospecting; step 3, gamma logging is carried out to determine the scale and the accurate depth position of the uranium mineralizer; step 4, determining the depth, the tendency and the inclination angle of the mineralized body by ultrasonic imaging logging; step 5, geological logging of the rock core, and obtaining uranium mineralization characteristics and ore formation rules; and 6, determining the uranium mineralizer occurrence by combining geological logging and ore forming rules. The method can accurately, efficiently and quickly determine the in-situ occurrence of uranium ore bodies, further improve the ore finding efficiency, reduce the ore finding cost, provide basis for uranium ore exploration deployment and adjustment, and have good popularization and application values.
Description
Technical Field
The invention belongs to the field of uranium mine exploration and ore formation rule research, and particularly relates to a method for accurately determining the occurrence of a hydrothermal uranium mineralizer.
Background
In coping with global climate change and energy safety problems, nuclear energy is used as clean, safe, efficient, economic and low-carbon environment-friendly energy, has an irreplaceable position, and is a necessary choice for improving the energy structure and layout of China and realizing sustainable development of the energy industry. With the development of nuclear power, a significant and long-term demand for uranium resources is presented. The south China hydrothermal uranium ore is an important industrial uranium resource type in China, after decades of development, partial uranium ore base resources in China are gradually exhausted, the uranium resources are needed to be replaced, and development of attack and ore-forming potential evaluation of deep uranium ore detection technology is needed to break through the deep uranium resources. However, the spatial distribution of the hydrothermal uranium ore bodies is controlled by multiple geological factors, so that the change of ore body shapes is large, and the difficulty of uranium ore exploration is increased.
The drilling engineering is the most main and direct means for exposing the ore body, but the core obtained by drilling can rotate along with the drilling and coring processes, so that the original underground state cannot be recovered, only the inclination angle and depth of the ore body can be determined through geological logging and geophysical prospecting logging, and the azimuth of the ore body cannot be accurately determined. At present, in the exploration process, the occurrence of the ore body is determined to be estimated mainly according to the mineralization characteristics and the ore formation rules of the earth surface, the error is larger, even the occurrence of the ore body cannot be determined to be revealed, the underground hidden uranium ore body ore control factor research is caused to have errors or deviations, and the error is larger when the uranium resource quantity is estimated by the ring-connected ore body. The occurrence of uranium ores, the factors of controlling the occurrence and the formation rule directly influence the exploration thought, the exploration deployment and even the construction and exploitation of uranium ores.
At present, the uranium ore body shape is mainly determined according to the shape of a construction area or the shape of an ore belt of a working area, general investigation experience considers that the uranium ore body is parallel to the shape of the broken area (belt) or the shape of the uranium ore belt of the working area, but the shape of the hydrothermal type uranium ore body is complex and changeable, the ore body shape is composed of multiple groups of directions, and in many cases, the uranium ore body and the broken area (belt) or the uranium ore belt are not spread in parallel, and according to the experience, the spatial spread of the uranium ore cannot be determined, so that the uranium ore body cannot be accurately analyzed to extend in trend and trend.
At present, uranium ore exploration is determined according to ore forming rules or experience, is inaccurate for a single ore body, and when uranium resource reserves are calculated, each uranium ore body needs to be looped in different drilling projects, and because the uranium ore body is inaccurate, loops of different uranium ore bodies in two drilling projects can be looped together or are the same uranium ore body originally, but are not consistent with exploration experience knowledge, and are manually split into two uranium ore bodies.
Therefore, in order to more accurately measure uranium ore body production, development of a method for accurately measuring hydrothermal type uranium mineralizer production is needed.
Disclosure of Invention
The invention aims to provide a method for accurately measuring the production of a hydrothermal uranium mineralized body, which is characterized in that the depth, the shape, the production and the like of the uranium ore body in the subsurface are recovered, the method utilizes drilling engineering, geological logging of a rock core is utilized, the shape and the inclination angle of the output of the uranium ore body are observed, and the rock core gamma logger is utilized to determine the output depth of the ore body; and (3) utilizing ultrasonic imaging logging to accurately determine the spatial distribution and the occurrence of the revealed uranium deposit (chemical) body, combining geological and mineralization characteristics, determining uranium deposit alteration characteristics, and exploring a set of accurate and reliable determination method for the depth and occurrence of the hydrothermal uranium deposit body. The method can accurately, efficiently and quickly determine the in-situ occurrence of uranium ore bodies, further improve the ore finding efficiency, reduce the ore finding cost, provide basis for uranium ore exploration deployment and adjustment, and have good popularization and application values.
Technical scheme for realizing the aim of the invention
A method for accurately measuring the occurrence of a hydrothermal uranium mineralizer, the method comprising the following steps:
step 1, researching a mining geological background and mining conditions of a working area, and determining a mining target area;
step 2, determining the position and mineralization intensity of the uranium body exposed in drilling by geophysical prospecting;
step 3, gamma logging is carried out to determine the scale and the accurate depth position of the uranium mineralizer;
step 4, determining the depth, the tendency and the inclination angle of the mineralized body by ultrasonic imaging logging;
step 5, geological logging of the rock core, and obtaining uranium mineralization characteristics and ore formation rules;
and 6, determining the uranium mineralizer occurrence by combining geological logging and ore forming rules.
The step 1 comprises the following steps:
step 1.1, determining geological features in a drilling working area through analysis of a mining geological background of the working area;
step 1.2: and analyzing uranium mineralization conditions by analyzing uranium mineralization characteristics, and determining a prospecting target area by combining a materialization detection quantity result.
The geological features in the drilling work area in the step 1.1 include: formation characteristics, fracture formation characteristics, magma and physical and chemical exploration anomalies.
The uranium mineralization features in the step 1.2 include: mineralization type, period, scale, morphology, and hydrothermal alteration.
The step 2 specifically comprises the following steps: and (3) carrying out drilling construction in a prospecting target area, carrying out geophysical exploration and recording on a rock core obtained by drilling in a working area by utilizing a gamma+beta logger on uranium ores revealed in the drilling, knowing geological structure characteristics, mineralization and abnormal distribution profile, drawing a gamma+beta curve graph, and determining the production depth and mineralization intensity of uranium mineralizers.
The method for determining the uranium mineralized body production depth in the step 2 comprises the following steps: when the gamma+beta logging measurement is carried out on the core of the drilling rock (ore), the measurement position is recorded while the gamma and gamma gabion readings are recorded, and the start-stop depth of each secondary core in the drilling is recorded by a core plate, namely the depth of the measuring point in the drilling.
And in the step 2, judging the uranium mineralization intensity according to the gamma reading recorded by the gamma+beta logger.
The step 3 specifically comprises the following steps: after uranium mineralization abnormality is found by obtaining geophysical records of a core through drilling a hole in a prospecting target area, gamma logging is conducted on the hole in time, when gamma logging is conducted, the lifting speed of a logging probe from the bottom of the hole to the top can be measured and controlled, the position and the measured value of the drilling point of the probe are recorded in real time, gamma logging data processing is conducted, and the mineralization depth position, scale and grade of uranium are accurately released.
The step 4 specifically comprises the following steps: and (3) positioning the depth, the inclination and the inclination angle of the ore-bearing fracture by utilizing ultrasonic wave imaging logging data, determining the scale and the accurate depth position of the uranium mineralizer by combining the gamma logging in the step (3), and finding out the corresponding position in an ultrasonic wave imaging logging result diagram to obtain the uranium mineralization occurrence.
The geological logging in step 5 includes: rock characteristics, mineralization characteristics, structural characteristics, hydrothermal alteration and interfaces of different nature.
The mineralizing features in the step 5 comprise: the relation between mineralized body and surrounding rock, the range of mineralized body, thickness, inclination angle and mineralization intensity.
The beneficial technical effects of the invention are as follows:
1. the invention provides a method for accurately measuring the production of a hydrothermal uranium mineralized body, which is based on an ultrasonic wave ore-forming logging technology and a gamma logging technology, and is used for summarizing the formation, structure, magma rock and mineralization characteristics of a working area by developing comprehensive catalogues of core geology and geophysical prospecting so as to analyze the ore-forming rule; by utilizing ultrasonic wave ore-forming well-logging technology and gamma well-logging technology, the production, scale and form of the hydrothermal uranium ore (chemical) are determined, and the mineralization characteristics are combined to analyze the spatial distribution rule of uranium mineralization, so that the mineralization and ore control factors of the uranium are further determined, and the mining effect research and the prospecting of a working area are guided.
2. According to the method for accurately measuring the production of the hydrothermal uranium mineralized body, the accurate position of the ore body can be determined through geophysical prospecting and gamma logging, the production of the uranium ore body found through the geophysical prospecting and gamma logging is accurately measured through ultrasonic imaging logging and rock core geological logging, and further the situation that the uranium ore body is spatially spread is obtained, and during deployment of exploration engineering, the drilling engineering can accurately carry out tracking control on the trend or trend of the uranium ore body. The method is simple and practical, is easy to master, and has effects of reducing cost and enhancing effect.
3. The method for accurately measuring the occurrence of the hydrothermal uranium mineralizer is a technical method summarized on the basis of scientific deep drilling of the phase-mountain uranium mine field and uranium mine investigation in regions such as the Yangtze river field, the deer well field and the like, and solves the problem of accurate occurrence of the hydrothermal uranium mineralizer in the investigation process. According to the invention, the uranium ore body production can be accurately measured through ultrasonic imaging logging and core geological logging, so that the uranium ore body circle connection is closer to the actual geological condition, and reserve calculation is more reliable and more credible; meanwhile, the determined ore control factors have important guiding effect on uranium ore investigation in the area, the application effect is good, and the method has wide popularization and application prospects.
Drawings
Fig. 1 is an ultrasonic imaging logging result diagram of a mountain science deep drill 316 m in the method for accurately determining the occurrence of a hydrothermal uranium mineralized body, which is provided by the invention, and is a comprehensive diagram of logging and data processing, wherein three core columns on the left side are ultrasonic imaging logging diagrams, and a curve on the right side is a Well CAD analysis of each fracture tendency and inclination angle value.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The invention will be further described in detail by taking the accurate determination of mineralized body production in the upper region of the cattle brain in the Jiangxi mountain volcanic basin as an example.
The method for accurately measuring the production of the hydrothermal uranium mineralizer specifically comprises the following steps:
step 1, determining a target area for prospecting by researching mining geological background and mining conditions of a working area
Step 1 comprises the following 2 sub-steps:
step 1.1, determining geological features in the drilling working area through analysis of the mining geological background of the working area, laying a foundation for analysis of the mining conditions of the uranium in step 1.2, and providing a mining direction.
Geological features within the drilling work area include: formation characteristics, fracture formation characteristics, magma and physical and chemical exploration anomalies.
Xiang Shan the pozzolanic formation consists essentially of a base and a cap. The base is mainly a modified rock system in the middle ancient kingdom, and the cover layer is a volcanic rock system of chalky, and is composed of acidic and medium-acidic volcanic lava, volcanic clastic rock and a small amount of normal sedimentary interlayer. Wherein the exposed area of the crushed macula-flow rock in the intrusion-overflow phase is the largest, and the cover layer structure is mainly in the northeast and northwest fracture structures. The base structure lattice mainly comprises three structures of east-west, north-east and north-south, and the north part develops for a plurality of periods to resemble the spot granite.
The ground gamma energy spectrum uranium abnormality, soil radon abnormality and geochemistry abnormality mainly develop in the Shanxi region and the North region, and are closely related to uranium mineralization and fracture structure. The mountain western region and the north region are important directions for uranium exploration.
Step 1.2: and analyzing uranium mineralization conditions by analyzing uranium mineralization characteristics, and determining a prospecting target area by combining a materialization detection quantity result.
Uranium mineralization features include: mineralization type, period, scale, morphology, and hydrothermal alteration.
A plurality of hydrothermal uranium deposits and mineralization points (bands) are developed in the Shanxi region, wherein Gushan deposits are the largest uranium deposits in a mineral field, uranium ore bodies have group veins, banding, concentrated distribution and large change of production shape in spatial distribution, mainly north east, north west, near east west and the like, and the ore bodies are arranged in a goose-line shape along trend and trend; the ore bodies are distributed in secondary fracture zones beside the main fracture in a small-angle oblique crossing with the main fracture or distributed in a fracture intersection triangle zone; the two sides of the ore control fracture zone form symmetrically distributed alteration zones, which mainly comprise: alkali exchange, hematite mineralization, carbonation, luciferization, hydromication, green mud petrochemical, and the like. The ore body contains ore lithology mainly comprising flow vein crazing England rock and broken spot crazing rock, and most ore bodies of ore deposit are pulse bodies and lens-shaped. The ore bodies are arranged in parallel along the trend, the profile is inclined, and the vertical direction is provided with lateral volts. The control effect of fracture structure degree ore body is obvious.
The radon concentration anomaly, the ground gamma energy spectrum anomaly and the geochemical anomaly of the soil are overlapped in the region above the cattle brain in the west of the mountain volcanic basin, the region is positioned at the intersection position of the northwest open-family side Dan Ju fracture and the northeast-family-water distribution fracture, the surface alkali-exchange fracture occurrence and the northwest fracture are obliquely crossed at a small angle, and the alteration mainly comprises sodium modification, hematite mineralization, hydromicturition, carbonic acid lithology and kaolinition, and the multiple edges of the fracture are symmetrically distributed.Obvious surface mineralization abnormality, and the maximum U value can reach 356 multiplied by 10 -6 . The method shows that the upper bovine brain region has good uranium ore forming conditions and ore forming environments and has good prospect of ore finding. Therefore, the upper brain region of the circled cattle is used as a mining target region, and the drilling engineering verification is deployed.
Step 2, determining the position and mineralization intensity of the uranium body exposed in drilling by geophysical prospecting
And (3) carrying out drilling construction in a prospecting target area, carrying out geophysical exploration and recording on a rock core obtained by drilling in a working area by utilizing a gamma+beta logger on uranium ores revealed in the drilling, knowing geological structure characteristics, mineralization and abnormal distribution profile, drawing a gamma+beta curve graph, and determining the production depth and mineralization intensity of uranium mineralizers.
And determining the position of the uranium mineralizer through drilling engineering construction. The method comprises the steps of extracting a baffle of a gamma gabion catalog instrument, putting a probe on a rock (ore) core, slowly moving the probe according to a certain sequence for measurement, finding out abnormality, marking, and recording the corresponding depth position. When measuring the core, gamma and gamma gabexa readings are typically recorded at a point distance of 0.5m to 1.0m, respectively. When measuring the core (uranium ore body), the core should be taken out from the core box and is 1m away from other cores, and when measuring, the gamma and gamma+beta readings are measured and recorded at the point distance of 10 cm-20 cm, and the gamma and gamma+beta curve graph of the core (ore body) is drawn.
According to the gamma and gamma+beta curve graphs, the uranium mineralization depth position and the rock core radioactivity value can be intuitively read, and the method is used for determining the accurate position, mineralization start-stop depth, grade and other information of a uranium mineralization body.
When the gamma+beta logging measurement is carried out on the core of the drilling rock (ore), the gamma and gamma gabion readings are recorded, and meanwhile, the measurement position (the starting and stopping depth of each secondary core in the drilling is recorded by a core plate) is also recorded, namely the depth of the measuring point in the drilling.
Determining the position of uranium ore body at drilling depth according to gamma+beta catalogue, wherein four sections of uranium mineralization positions are respectively disclosed in volcanic cover layer broken-spot flow vein rock drilled in the western cattle brain region of the mountain: the first section is located at 316.00-316.30 m, the second section is located at 716.10-716.40 m, the third section is located at 768.90-769.20 m, the fourth section is located at 836.00-836.70 m, the uranium mineralization intensity is judged according to gamma readings measured and recorded by a gamma+beta logger, the mineralization intensity is 38.66cps, 41.18cps, 37.12cps and 80.12cps respectively, and the mineralization development is in a structural band fracture or a secondary fracture.
Step 3, gamma logging to determine the scale and accurate depth position of uranium mineralizer
After the abnormal uranium mineralization is found by the geophysical prospecting of the core obtained by drilling holes in the upper bovine brain region, gamma logging is carried out on the holes in time, and the mineralization depth position, scale (uranium mineralization thickness) and grade of uranium are more accurately released.
The main purpose of gamma logging is to determine the depth, grade and thickness of uranium deposit layer in borehole, and has corresponding gamma logging specification. The general method is as follows:
during gamma logging, the lifting speed of the logging exploratory tube from the bottom of the hole can be measured and controlled, the position and the measured value of the exploratory tube at the drilling measuring point are recorded in real time, gamma logging data processing is carried out, and the starting and stopping depth, grade and thickness (uranium mineralization scale) of the uranium ore layer are calculated.
The log interpretation results are as follows:
xiang Shan the first-stage uranium mineralization depth position of the upper region of the cattle brain of the volcanic basin is 315.87-316.55 m, the thickness is 0.70 m, and the uranium grade is 0.004%; the depth position of uranium mineralization in the second section is 315.92-316.62 m, the thickness is 0.70 m, and the uranium grade is 0.007%; the third stage uranium mineralization depth position is 768.70-769.40 m, the thickness is 0.70 m, and the uranium grade is 0.001%; the depth position of uranium mineralization in the fourth section is 835.57-836.82 m, the thickness is 1.25 m, and the uranium grade is 0.013%. Mineralization is located in the crushed plaque streak rock.
Step 4, determining the depth, the tendency and the inclination angle of the mineralized body by ultrasonic imaging logging
After gamma logging is finished, carrying out ultrasonic imaging logging, and carrying out MGX-II ultrasonic imaging logging system used in the measurement. Parameter setting in the measuring process: the number of measurement points for one rotation of the concave reflector is 144, namely the number of horizontal samples is 144 points/week; the scanning time of one rotation of the concave reflector is 1,250 mu s; selecting an automatic Acquisition Gate (AGC) switch, wherein the value range of the automatic acquisition gate is 50-200; setting a time window to be 100-170 mu s, and setting the horizontal scanning frequency of the probe to be 5.56 cycles/s; sampling frequency sr=4 points/second; the descending/ascending speed of the probe is 1.0-1.2 m/min; the vertical sampling interval is 4mm.
The field collected ultrasonic imaging logging data is imported into Well CAD analysis software, a window comprising drilling depth, running time of waves, amplitude images of reflected waves of hole walls and drilling crack trend/inclination angle change curves is automatically generated, as shown in figure 1, the depth, trend and inclination angle values of each crack can be automatically calculated by using the Well CAD software, the values are expressed by tadpole symbols, an interval where the tadpole is located represents crack inclination angles, the direction of the tadpole tail represents crack trend, and the direction perpendicular to the trend is crack trend.
Determining the scale and the accurate depth position of a uranium mineralizer by combining the gamma logging in the step 3, and finding out the corresponding position in an ultrasonic imaging logging result diagram, wherein the fracture occurrence is the uranium mineralization occurrence; and (3) determining the position and mineralization intensity of the uranium body revealed in drilling by using the geophysical prospecting in the step 2, and further verifying the uranium mineralization shape and thickness.
Ultrasonic imaging logging is used for in-situ imaging of a deep drilling wall of a mountain science, and the positions, the dip angles, the trends, the three-dimensional characteristics of a hole wall and the like of mineral cracks and structural cracks in a uranium mineralization section of a drilling hole are accurately measured. Ultrasonic imaging logging is carried out on the position of 316 m of the mountain science deep drill, and the result diagram is shown in figure 1. The reflection capability of different substances on ultrasonic waves is different, the intensity of ultrasonic wave reflection signals is reflected by the color depth and the change of an image, and the occurrence of uranium mineralization in-situ can be recovered based on image characteristics and mineralization depth. According to the accurate depth of uranium mineralization segments determined by geophysical prospecting record and logging data, locating the bearing fracture occurrence by utilizing ultrasonic wave minescence logging data, and recovering and determining four segments of uranium mineralization occurrence are respectively as follows:
xiang Shan the first-stage uranium mineralization depth position of the upper region of the cattle brain of the volcanic basin is 315.87-316.55 m, and the uranium mineralization body production state is: inclination at 300 °, inclination at 74 °; the second-stage uranium mineralization depth position is 315.92-316.62 m, and uranium mineralization body production shape: inclination is 140 degrees, and inclination angle is 76 degrees; the third-stage uranium mineralization depth position is 768.70-769.40 m, and uranium mineralization body production shape: inclination 270 degrees, inclination 80 degrees; the fourth stage uranium mineralization depth position is 835.57-836.82 m, and uranium mineralization body production shape: trend 275 deg., tilt angle 77 deg..
Step 5, developing geological logging of the core to obtain uranium mineralization characteristics and ore formation rules
Developing rock core and core geology catalogues, wherein the drill hole rock core catalogues are generally catalogues by adopting a 1:100 scale, and the rock characteristics such as color, material composition, structure, secondary change and rock stratum thickness are described in detail; the relation and boundary between mineralized body and surrounding rock, mineralized body range, mineralized body thickness, ore color, ore material composition, structure, mineralization distribution, hydrothermal alteration, output characteristics, mineralization intensity and the like are described in detail. And determining uranium mineralization characteristics through comprehensive geological logging of the rock core, and analyzing uranium mineralization control factors.
And (3) determining the position and depth of a mineralized body according to the step (3), and developing detailed geological records, wherein the four mineralized characteristics are generally expressed as that uranium mineralization develops in broken macula and flow vein rock cracks of the lower chalk system goose lake group, and the widths of uranium mineralization etching strips of the geological records are respectively 1.20 meters, 1.10 meters, 0.80 meters and 1.50 meters. Geological catalogs show that the alteration can be divided into three phases, the first phase: early uranium mineralization and development alkaline fluid exchange alteration, wherein mineral groups comprise albite, ferrierite, calcite group, albite, chlorite and chlorite group. Second phase: the main ore-forming period is characterized by acid fluid alteration, and is characterized by newly-formed microcrystalline illite, illite mixed layer clay mineral, colloidal apatite and colloidal fluorite, wherein the ore mineral is asphaltic uranium ore, titanium uranium ore and a small amount of uranium stone. The third stage is marked by the alternating alteration of weakly alkaline fluid, mainly producing calcite, fluorite and ice long stone. Uranium mineralization takes the form of pulse and mainly develops in structural fissures, and changes are symmetrically distributed.
Step 6, combining geological record and ore forming rule to determine uranium mineralizer production
And according to the step 4, measuring the fracture occurrence of all structures in drilling by ultrasonic imaging logging, determining the scale and the accurate depth position of the uranium mineralization body by combining the step 3 gamma logging, and finding the corresponding position in an ultrasonic imaging logging result diagram, wherein the fracture occurrence is the uranium mineralization occurrence. And 5, carrying out comprehensive geological logging on the rock core in the step 5, and determining the ore formation rule and mineralization characteristics of uranium.
And step 6, the main purpose is to confirm and verify again the uranium mineralization accurately obtained in the steps 3 and 4, whether the uranium mineralization is consistent with the actual rock core geological condition and the mineralization characteristics, promote the knowledge of uranium mineralization rules and determine the uranium mineralization.
The ore minerals in the upper region of the Xiang Shan volcanic basin cattle brain are asphaltic uranium ore, titano-uranium ore and a small amount of uranium stone, the ore minerals are in a stringer shape, hydrothermal alteration in at least three stages of development is carried out, and four stages of uranium mineralization depths, scales, grades and output states are disclosed in the upper region of the Xiang Shan volcanic basin cattle brain as follows:
the uranium mineralization depth position of the first section is 315.87-316.55 m, the thickness is 0.70 m, the uranium grade is 0.004%, the occurrence is inclined at 300 degrees, and the inclination angle is 74 degrees; the second-stage uranium mineralization depth is 315.92-316.62 m, the thickness is 0.70 m, the uranium grade is 0.007%, the occurrence is 140 degrees, and the inclination angle is 76 degrees; the third stage uranium mineralization depth is 768.70-769.40 m, the thickness is 0.70 m, the uranium grade is 0.001%, the occurrence is inclined 270 degrees, and the inclination angle is 80 degrees; the fourth stage uranium mineralization depth is 835.57-836.82 m, the thickness is 1.25 m, the uranium grade is 0.013%, the occurrence is inclined at 275 degrees, and the inclination angle is 77 degrees.
The principle of accurately measuring the uranium mineralization body production state is as follows: the wall of the borehole is scanned point by utilizing ultrasonic waves, and then the intensity change of returned acoustic energy is displayed on a screen in the form of an optical signal. The triaxial magnetometer records the magnetic coordinates of each scanning point of the hole wall and orients the hole wall image; the inclinometer records the inclination coordinates of each scanning point of the hole wall, calculates the offset value of the drilling hole, and performs angle correction on the measured structural surface (fracture, rock stratum, fault and the like), and finally forms a 'two-dimensional hole wall' unfolding image reflecting the hole wall characteristics, as shown in the left side of fig. 1; and accurately drawing the sine/cosine curve on the 'two-dimensional hole wall' image on the new layer to form an image of the distribution of the fracture along with the drilling depth. The depth, the tendency and the inclination angle of each crack can be automatically calculated by using Well CAD software, and the numerical values can be output in a digital mode or expressed by a tadpole symbol, wherein the interval where the tadpole is positioned represents the inclination angle of the crack, the direction of the tail of the tadpole represents the tendency of the crack, and the direction perpendicular to the tendency is the trend of the crack, as shown on the right side of the figure 1, so that the crack occurrence at different depth positions can be accurately measured.
And determining the accurate depth position of the uranium mineralizer by combining the drill core and gamma logging data, and determining the fracture occurrence measured by ultrasonic imaging logging at the corresponding depth as the uranium mineralizer occurrence.
The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (6)
1. A method for accurately measuring the occurrence of a hydrothermal uranium mineralizer, the method comprising the steps of:
step 1, researching a mining geological background and mining conditions of a working area, and determining a mining target area;
step 2, determining the position and mineralization intensity of the uranium body exposed in drilling by geophysical prospecting;
step 3, gamma logging is carried out to determine the scale and the accurate depth position of the uranium mineralizer;
step 4, determining the depth, the tendency and the inclination angle of the mineralized body by ultrasonic imaging logging;
step 5, geological logging of the rock core, and obtaining uranium mineralization characteristics and ore formation rules;
step 6, determining uranium mineralizer production by combining geological record and ore formation rules;
the step 2 specifically comprises the following steps: performing drilling construction in a prospecting target area, performing geophysical prospecting on a core obtained by drilling in a working area by utilizing a gamma+beta logger on uranium ores revealed in drilling, knowing geological structure characteristics, mineralization and abnormal distribution profile, drawing a gamma+beta curve graph, and determining the production depth and mineralization intensity of uranium mineralizers;
the method for determining the uranium mineralized body production depth in the step 2 comprises the following steps: when the gamma+beta logging measurement is carried out on the drill hole rock core, the gamma and gamma plus beta reading are recorded, meanwhile, the measurement position is recorded, and the start-stop depth of each secondary rock core in the drill hole is recorded by a rock core plate, namely the depth of a measuring point in the drill hole;
judging uranium mineralization intensity according to gamma readings measured and recorded by a gamma+beta logger in the step 2;
the step 3 specifically comprises the following steps: after the uranium mineralization abnormality is found by the geophysical prospecting record of the core obtained by drilling the hole in the prospecting target area, gamma logging is carried out on the hole in time, when gamma logging is carried out, the lifting speed of the logging exploratory tube from the hole bottom to the top can be measured and controlled, the position and the measured value of the exploratory tube at the drilling measuring point are recorded in real time, and then gamma logging data processing is carried out, so that the mineralization depth position, scale and grade of uranium are accurately released;
the step 4 specifically comprises the following steps: and (3) positioning the depth, the inclination and the inclination angle of the ore-bearing fracture by utilizing ultrasonic wave imaging logging data, determining the scale and the accurate depth position of the uranium mineralizer by combining the gamma logging in the step (3), and finding out the corresponding position in an ultrasonic wave imaging logging result diagram to obtain the uranium mineralization occurrence.
2. The method for accurately measuring the production of the hydrothermal type uranium mineralizer according to claim 1, wherein the step 1 includes:
step 1.1, determining geological features in a drilling working area through analysis of a mining geological background of the working area;
step 1.2: and analyzing uranium mineralization conditions by analyzing uranium mineralization characteristics, and determining a prospecting target area by combining a materialization detection quantity result.
3. The method for accurately measuring the production of the hydrothermal uranium mineralizer according to claim 2, wherein the geological features in the drilling work area in step 1.1 include: formation characteristics, fracture formation characteristics, magma and physical and chemical exploration anomalies.
4. A method for accurate measurement of the production of hydrothermal uranium mineralizers according to claim 3, wherein the uranium mineralization features in step 1.2 include: mineralization type, period, scale, morphology, and hydrothermal alteration.
5. The method for accurately measuring the production of the hydrothermal uranium mineralizer according to claim 4, wherein the geological logging in step 5 includes: rock characteristics, mineralization characteristics, structural characteristics, hydrothermal alteration and interfaces of different nature.
6. The method for accurately measuring the production of the hydrothermal type uranium mineralizer according to claim 5, wherein the mineralizing features in step 5 include: the relation between mineralized body and surrounding rock, the range of mineralized body, thickness, inclination angle and mineralization intensity.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE598366A (en) * | 1960-01-08 | 1961-06-20 | Grace W R & Co | Thorium oxide-uranium oxide soils |
| US4059760A (en) * | 1974-11-18 | 1977-11-22 | Murphy John A | Georadiological surveying for oil and gas and subsurface structure contour mapping |
| WO2013155125A1 (en) * | 2012-04-13 | 2013-10-17 | Schlumberger Canada Limited | Reservoir and completion quality assessment in unconventional (shale gas) wells without logs or core |
| WO2017204807A1 (en) * | 2016-05-26 | 2017-11-30 | Halliburton Energy Services, Inc. | Methods for enhancing applications of electrically controlled propellants in subterranean formations |
| CN108279444A (en) * | 2017-12-25 | 2018-07-13 | 核工业北京地质研究院 | A kind of mesothermal gold deposits deep detection method |
| CN109814172A (en) * | 2018-12-25 | 2019-05-28 | 核工业北京地质研究院 | A kind of alaskite type uranium ore deep part ore prediction and localization method |
| CN111323846A (en) * | 2018-12-13 | 2020-06-23 | 核工业二0八大队 | Multi-element ore control factor combined quantitative ore formation prediction method |
| CN111696208A (en) * | 2020-06-03 | 2020-09-22 | 中国地质调查局西安地质调查中心(西北地质科技创新中心) | Geological-geophysical three-dimensional modeling method based on multi-data fusion |
| CN113109889A (en) * | 2021-04-25 | 2021-07-13 | 东华理工大学 | Sandstone-type uranium ore prospecting method based on 'two-stage and two-mode' mineralization model |
| CN113359203A (en) * | 2021-06-18 | 2021-09-07 | 西安石油大学 | Method for detecting deep jet flow sedimentary deposit based on natural gamma-ray spectroscopy logging |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3083316B1 (en) * | 2018-06-29 | 2020-06-12 | IFP Energies Nouvelles | PROCESS FOR THE QUANTIFICATION OF PYRITIC SULFUR AND ORGANIC SULFUR FROM A SAMPLE OF ROCK |
-
2021
- 2021-12-31 CN CN202111655607.XA patent/CN114352260B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE598366A (en) * | 1960-01-08 | 1961-06-20 | Grace W R & Co | Thorium oxide-uranium oxide soils |
| US4059760A (en) * | 1974-11-18 | 1977-11-22 | Murphy John A | Georadiological surveying for oil and gas and subsurface structure contour mapping |
| WO2013155125A1 (en) * | 2012-04-13 | 2013-10-17 | Schlumberger Canada Limited | Reservoir and completion quality assessment in unconventional (shale gas) wells without logs or core |
| WO2017204807A1 (en) * | 2016-05-26 | 2017-11-30 | Halliburton Energy Services, Inc. | Methods for enhancing applications of electrically controlled propellants in subterranean formations |
| CN108279444A (en) * | 2017-12-25 | 2018-07-13 | 核工业北京地质研究院 | A kind of mesothermal gold deposits deep detection method |
| CN111323846A (en) * | 2018-12-13 | 2020-06-23 | 核工业二0八大队 | Multi-element ore control factor combined quantitative ore formation prediction method |
| CN109814172A (en) * | 2018-12-25 | 2019-05-28 | 核工业北京地质研究院 | A kind of alaskite type uranium ore deep part ore prediction and localization method |
| CN111696208A (en) * | 2020-06-03 | 2020-09-22 | 中国地质调查局西安地质调查中心(西北地质科技创新中心) | Geological-geophysical three-dimensional modeling method based on multi-data fusion |
| CN113109889A (en) * | 2021-04-25 | 2021-07-13 | 东华理工大学 | Sandstone-type uranium ore prospecting method based on 'two-stage and two-mode' mineralization model |
| CN113359203A (en) * | 2021-06-18 | 2021-09-07 | 西安石油大学 | Method for detecting deep jet flow sedimentary deposit based on natural gamma-ray spectroscopy logging |
Non-Patent Citations (2)
| Title |
|---|
| 利用γ+β计数率判别钻孔矿化类型方法探讨;陈霜;;河南理工大学学报(自然科学版)(第06期);全文 * |
| 诸广岩体南部长排铀矿床勘查模式与找矿预测;徐文雄;刘文泉;伏顺成;许幼;叶永钦;;地质学刊(第03期);全文 * |
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