CN112698422B - Hydrologic method for rapidly positioning sandstone uranium ore remote areas in grassland coverage areas - Google Patents
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 128
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 233
- 230000002159 abnormal effect Effects 0.000 claims abstract description 134
- 230000033558 biomineral tissue development Effects 0.000 claims abstract description 73
- 229910052705 radium Inorganic materials 0.000 claims abstract description 25
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000033116 oxidation-reduction process Effects 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims description 18
- 230000002349 favourable effect Effects 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000005065 mining Methods 0.000 claims description 7
- 235000020681 well water Nutrition 0.000 claims description 7
- 239000002349 well water Substances 0.000 claims description 7
- 238000011835 investigation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 description 9
- 244000144980 herd Species 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 235000005318 Serenoa repens Nutrition 0.000 description 1
- 240000006661 Serenoa repens Species 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of uranium mineralization prediction, and in particular relates to a hydrological method for rapidly positioning sandstone type uranium mineralization remote scenic spots in grassland coverage areas, which comprises the steps of investigating and sampling a herdsmen well to determine water-bearing layer distribution, carrying out water sample analysis to obtain uranium mineralization information and uranium mineralization information, and delineating a water uranium abnormal region, a water uranium radium balance coefficient Kp abnormal region and a water Po abnormal region 210 The abnormal region, the aquatic water chemistry abnormal region, the aquatic oxidation-reduction capability Eh abnormal region and the aquatic mineralization degree abnormal region comprise a determination aquatic uranium mineralization abnormal region and an advantageous uranium mineralization area, and the uranium mineralization remote scenery region is determined by the aquatic uranium mineralization abnormal region and the advantageous uranium mineralization area. On one hand, the method avoids manpower, financial resources and material resources required by exploration and research; in addition, the method is easy to operate and high in practicability, and is particularly suitable for prospecting the uranium ores in grassland coverage areas such as inner mongolia and Xinjiang in China, and the method is good in economy and quick to implement.
Description
Technical Field
The invention belongs to the technical field of uranium mineralization prediction, and particularly relates to a hydrologic method for rapidly positioning sandstone type uranium mineralization remote scenic spots in grassland coverage areas.
Background
With the increasing degree of sandstone-type uranium mining exploration work, surface ores and outcrop ores have been found to be depleted, and buried ores and hidden ores are mainly searched for in the coverage area. In vast sedimentary basins covered by grasslands such as inner mongolia, xinjiang and the like, thick-layer soil is developed on the earth surface, the covering thickness is often larger, the number is tens of meters, the number is hundreds of meters, the uranium ore environment and the ore finding information are covered, and great difficulty is brought to uranium ore finding. The traditional method for searching the ore in the covered area of the grassland is to preliminarily detect the ore forming environment by an earthquake and electromagnetic method, find out the ore forming environment and the ore forming information by a large amount of drilling, has long overall period and large investment, and brings a certain damage to the green grassland due to the development of a large amount of engineering work.
Disclosure of Invention
The invention aims to provide a hydrologic method for rapidly positioning sandstone uranium ore formation remote scenic spots in grassland coverage areas, which can realize sandstone uranium ore formation prediction with higher precision.
The technical scheme of the invention is as follows:
a hydrologic method for rapidly positioning sandstone uranium ore remote areas in grassland coverage areas comprises the following steps:
firstly, determining water-bearing layer distribution by investigation and sampling of a herdsman water well;
step two, carrying out water sample analysis to obtain uranium mineralization information and uranium mineralization information;
step three, enclosing various abnormal areas in the water;
comprises a surrounding uranium abnormal region in water, a uranium radium balance coefficient Kp abnormal region in water and Po in water 210 An abnormal region, a water chemical abnormal region, a water oxidation-reduction capacity Eh abnormal region and a water mineralization degree abnormal region;
step four, comprehensively predicting and determining uranium ore formation distant view area
The method comprises the steps of determining a uranium mineralization abnormal area and a favorable uranium mineralization area in water, and determining a uranium mineralization remote scenic spot through the uranium mineralization abnormal area and the favorable uranium mineralization area in water.
The step one of the investigation and sampling of the herd water well comprises the steps of determining information of the herd water well and recording coordinates, water well depth, water quantity and water quality of the herd water well in detail.
In the first step, a herdsman water well with the depth of more than 30 meters and the water inflow of more than 10 tons/day is defined as a deep rich water well, and the continuation of 2km at the periphery of the rich water well is defined as a deep aquifer distribution range.
The step 3.1) is to enclose an abnormal uranium region in water, and the abnormal uranium region is specifically:
and determining a background value M and a mean square error S of uranium content in water of a deep water-rich well of the herdsmen, defining a position with the uranium content greater than or equal to M+3S in the water as an abnormal uranium hole in the water, connecting the abnormal uranium holes in the water, and determining a region marked by the connecting line as an abnormal uranium region in the water.
Step 3.2) enclose the uranium radium equilibrium coefficient Kp abnormal region in the water, specifically: and defining a position of which the uranium radium balance coefficient Kp in water of the deep water-rich well of the herdsmen is smaller than 0.8 as an abnormal hole of the uranium radium balance coefficient Kp in water, connecting the abnormal holes of the uranium radium balance coefficient Kp in water, and determining a region marked by a connecting line as an abnormal region of the uranium radium balance coefficient Kp in water.
The step 3.3) is to enclose Po in water 210 The abnormal region is specifically: counting Po in deep water-rich well water of herdsman 210 The background value M and the mean square error S of the content, po in water 210 The position with the content of M+3S or more is defined as Po in water 210 Abnormal hole and Po in water 210 The abnormal holes are connected, and the area marked by the connecting line is determined as Po in water 210 An abnormal region.
Step 3.4) enclose the aquatic chemistry abnormal region in water, specifically: HCO in deep water-rich well water of herdsman 3 - And Cl - The position with the sum of the molar contents of more than 70% is defined as a water chemical abnormality hole in water, the water chemical abnormality holes in water are connected, and the area marked by the connection line is defined as a water chemical abnormality area in water.
Step 3.5) is to define an abnormal region of oxidation-reduction capability Eh in water, and specifically comprises the following steps: defining an abnormal hole of the redox capacity Eh at a position where the redox capacity Eh in the water of the deep water-rich well of the herder is smaller than-30.0 mv, connecting the abnormal holes of the redox capacity Eh, and determining a region marked by a connecting line as an abnormal region of the redox capacity Eh.
And 3.6) defining an in-water mineralization abnormal region, namely defining in-water mineralization abnormal holes at the position of a herder deep water-rich well, wherein the mineralization degree of the in-water mineralization abnormal holes is 1.0-5.0, connecting the in-water mineralization abnormal holes, and determining the in-water mineralization abnormal region as the in-water mineralization abnormal region in the connection-defined region.
The determination of uranium mineralization abnormal region in water is specifically that the uranium radium balance coefficient Kp abnormal region in water and Po in water 210 And overlapping the abnormal areas, namely overlapping the uranium abnormal areas in the water, wherein the overlapping areas are the uranium mineralization abnormal areas in the water.
The determination of the favorable uranium mining area is specifically carried out by overlapping a water chemical abnormal area, a water oxidation-reduction capability Eh abnormal area and a water mineralization degree abnormal area, and the overlapping area is the favorable uranium mining area.
The uranium ore formation remote scenic area is determined specifically in a water-bearing layer distribution area, a uranium ore formation abnormal area in water and a favorable uranium ore formation area, and the three overlapped areas are the uranium ore formation remote scenic area.
The invention has the following remarkable effects: determining the distribution of the underground aquifer by utilizing the information of the pastoral water well covered by the grassland, wherein the underground aquifer can lock the sand body distribution area; utilizing uranium content in water, uranium radium balance coefficient Kp and Po in water 210 Parameters reflecting uranium mineralization information in water are used for locking uranium mineralization abnormality; the parameters of HL or HS type water (namely runoff zone water chemistry type), mineralization degree between 1.0 and 5.0, oxidation-reduction capability Eh less than-30.0 mv and the like in water are utilized to reflect the environment parameters of the favorable uranium mine formation to lock the favorable uranium mine formation zone; and finally, stacking uranium mineralization abnormality information and favorable uranium mineralization information in the sand body distribution area, and predicting a uranium mineralization remote scenic spot. The technical method avoids manpower, financial resources and material resources required by exploration and research on one hand; on the other hand, the technical method is easy to operate and high in practicability, especially for the uranium ore prospecting in grassland coverage areas such as inner Mongolia and Xinjiang in China, the economical efficiency, the rapidity, the high efficiency and the environmental protection of the method can be better reflected, and the wide prospect of hydrological prospecting is shown。
Drawings
FIG. 1 is a flow chart of the method;
fig. 2 is a graph of a bi-modal frontal kernel paste of concave hydrogeologic prediction.
Detailed Description
The invention is further illustrated by the following figures and detailed description.
The flow of the implementation of the present method is described in connection with fig. 1.
Step one, investigation and sampling of herdsman water well
1.1 Determining information of the herdsmen water well, and recording coordinates, water well depth, water quantity and water quality of the herdsmen water well in detail;
1.2 Deep rich well sampling
The herder water well with depth greater than 30 meters and water inflow greater than 10 tons/day is defined as deep rich water well, and the water is sampled respectively with water sample amount of 5 liters
1.3 Determining aquifer distribution
And determining the continuation of the periphery of the rich well for 2km as the distribution range of the deep aquifer. Accordingly, according to the distribution characteristics of the deep rich well, the water-bearing layer distribution map of the research area is drawn.
In this embodiment, the information 60 holes of the herdsman water well are collected in the two-basin frontal kernel through a well sinking system. Wherein, the deep water-rich wells with the depth of more than 30 meters and the water inflow of more than 10 tons/day have 42 holes (a in fig. 2), and the frontal kernel paste concave aquifer distribution map (b in fig. 2) is drawn according to the distribution of the deep water-rich wells. As can be seen from fig. 2b, the deep portion of the frontal meatus in the depression is rich in water, and is mainly distributed in the center of the depression and radiate to the east, west and north.
Step two, water sample analysis
Water sample analysis includes two classes: uranium mineralization information and uranium mineralization information.
Uranium mineralization information includes: uranium content in water, uranium radium balance coefficient Kp and Po 210 The content is as follows;
the uranium mineralization information includes: the content of anions in water, the oxidation-reduction capability Eh in water and the mineralization degree in water;
and (3) carrying out the two-part analysis on the water sample in the deep rich well collected in the step (1.2).
Step three, enclosing various abnormal areas in the water
3.1 Circling uranium anomaly in water
And (3) counting background values M and mean square deviations S of uranium content in water of deep water-rich wells of herdsmen in a research area, defining positions with the uranium content greater than or equal to M+3S in water as abnormal holes of uranium in water, connecting the abnormal holes of uranium in water, and determining a region marked by a connecting line as an abnormal region of uranium in water.
3.2 Circling the uranium radium balance coefficient Kp abnormal region in water
And defining a position of which the uranium radium balance coefficient Kp in water of the deep water-rich well of the herdsman in the research area is smaller than 0.8 as an abnormal hole of the uranium radium balance coefficient Kp in water, connecting the abnormal holes of the uranium radium balance coefficient Kp in water, and determining a region marked by a connecting line as an abnormal region of the uranium radium balance coefficient Kp in water.
3.3 Ring water Po 210 Abnormal region
Po in deep water-rich well water of herdsman in statistical research area 210 The background value M and the mean square error S of the content, po in water 210 The position with the content of M+3S or more is defined as Po in water 210 Abnormal hole and Po in water 210 The abnormal holes are connected, and the area marked by the connecting line is determined as Po in water 210 An abnormal region.
3.4 Circling the water chemical abnormality area
HCO in deep water-rich well water of herdsman in research area 3 - And Cl - The position with the sum of the molar contents of more than 70% is defined as a water chemical abnormality hole in water, the water chemical abnormality holes in water are connected, and the area marked by the connection line is defined as a water chemical abnormality area in water.
Step 3.5: circumscribing the abnormal region of oxidation-reduction capability Eh in water
Defining an abnormal hole of the redox capacity Eh at a position where the redox capacity Eh in the deep water-rich well water of the herdsman in the research area is smaller than-30.0 mv, connecting the abnormal holes of the redox capacity Eh, and determining a region marked by the connection as the abnormal region of the redox capacity Eh.
Step 3.6: delineating an abnormal area of mineralization in water
Defining water mineralization abnormal holes at the position of the mineralization degree of 1.0-5.0 in water of a deep water-rich well of a herder in a research area, connecting the water mineralization abnormal holes, and determining a coverage area as the water mineralization abnormal area.
The abnormal holes with uranium content greater than 80 mug/L in 42 deep water-rich wells in the frontal kernel of the two-way basin are provided with 18 holes, and are mainly distributed from north to south along the center of the concave (c in fig. 2); the abnormal holes of uranium radium balance coefficient Kp in water are provided with 22 holes and are mainly distributed in the middle and south of the pit (d in figure 2); po in water 210 The abnormal holes with the content of more than 5.0mBq/L are 15 holes and are mainly distributed from the south to the west to the north along the center of the concave (e in fig. 2); the water chemical abnormal holes in the water are 23 holes and are mainly distributed in the middle part of the recess (g in fig. 2); the abnormal holes of the oxidation-reduction capability Eh in water are 18 holes and are mainly distributed in the middle east part of the pit (h in fig. 2); the abnormal holes of the mineralization degree in water have 22 holes and are mainly distributed from north to south along the center of the concave (i in fig. 2).
Step four, comprehensive prediction
4.1 Delineating uranium mineralization anomaly in water
The uranium abnormal region in water defined in the step 3.1), the uranium radium balance coefficient Kp abnormal region in water defined in the step 3.2) and the Po in water defined in the step 3.3) are processed 210 And overlapping the abnormal areas, wherein the abnormal overlapping areas are the uranium mineralization abnormal areas in the water.
4.2 Overlapping the chemical abnormal region in the water outlined in the step 3.4, the oxidation-reduction capacity Eh abnormal region in the water outlined in the step 3.5 and the mineralization degree abnormal region in the water outlined in the step 3.6, wherein the abnormal overlapping regions are the uranium-facilitated mining regions.
4.3 Uranium-delineating mine-forming remote scenic spot
And (3) overlapping the uranium mineralization abnormal region in water, which is outlined in the step (4.1), with the favorable uranium mineralization region which is determined in the step (4.2) in the water-bearing layer distribution region of the research region drawn in the step (1), wherein the three mutually overlapped regions are uranium mineralization remote scenic regions.
Abnormal region of uranium in water (figure 2 c), abnormal region of uranium radium balance coefficient Kp in water (figure 2 d) and Po in water in herder rich well in the two-basin frontal kernel paste pit 210 The overlapped area of the abnormal area (figure 2 e) and the three areas is mainly distributed in the middle of the concaveSu Beng, dawson-nu & hunt, zhang Guyin, sabal bench four regions, which are uranium mineralization anomaly in water (fig. 2 f); the overlapped areas of the water chemical abnormal area (figure 2 g), the oxidation-reduction capacity Eh abnormal area (figure 2 h) and the mineralization degree abnormal area (figure 2 i) in the water-rich well of the herdsman are mainly distributed in three areas (figure 2 j) of Su Beng, dawson-nu and hunt and Sha Baer in the middle of the pit, and the three abnormal areas are the uranium-facilitated mining areas; with the defined aquifer distribution area (figure 2 a) as a range, the uranium mineralization abnormal area (figure 2 f) and the beneficial uranium mineralization area (figure 2 j) in water are overlapped, and 5 uranium mineralization remote areas, namely Su Beng remote areas, knoop and Tingbei remote areas (I-2), knoop He Tingyuan remote areas, dall Su Yuan remote areas (I-1), zhang Guyin remote areas and Sha Baer remote areas (I-3) can be defined by the overlapped areas. Among them, su Beng, nu He Ting and Zhang Guyin remote areas correspond to Su Beng medium-sized uranium deposit, nu and hunt oversized uranium deposit, zhang Guyin small-sized uranium deposit, respectively (fig. 2 k).
Claims (2)
1. A hydrologic method for rapidly positioning sandstone uranium ore formation remote areas in grassland coverage areas is characterized by comprising the following steps of: the method comprises the following steps:
step one, a herdsman water well surveys and samples to determine a water-bearing layer distribution area;
the method comprises the steps of defining a herdsman water well with a depth of more than 30 meters and a water inflow of more than 10 tons/day as a deep rich water well, and determining a continuation of 2km around the rich water well as a deep aquifer distribution area;
step two, carrying out water sample analysis to obtain uranium mineralization information and uranium mineralization information;
step three, enclosing various abnormal areas in the water;
comprises a surrounding uranium abnormal region in water, a uranium radium balance coefficient Kp abnormal region in water and Po in water 210 An abnormal region, a water chemical abnormal region, a water oxidation-reduction capacity Eh abnormal region and a water mineralization degree abnormal region;
step 3.1) circumscribing an abnormal uranium region in water, specifically:
determining a background value M and a mean square error S of uranium content in water of a deep water-rich well of a herdsmen, defining a position with the uranium content greater than or equal to M+3S in water as an abnormal uranium hole in water, connecting the abnormal uranium holes in water, and determining a region marked by the connecting line as an abnormal uranium region in water;
step 3.2) circling an abnormal region of uranium radium balance coefficient Kp in water, which is specifically as follows: defining a position with the uranium radium balance coefficient Kp smaller than 0.8 in water of a deep water-rich well of the herdsmen as an abnormal hole with the uranium radium balance coefficient Kp in water, connecting the abnormal holes with the uranium radium balance coefficient Kp in water, and determining a region marked by a connecting line as an abnormal region with the uranium radium balance coefficient Kp in water;
step 3.3) confining Po in Water 210 The abnormal region is specifically: counting Po in deep water-rich well water of herdsman 210 The background value M and the mean square error S of the content, po in water 210 The position with the content of M+3S or more is defined as Po in water 210 Abnormal hole and Po in water 210 The abnormal holes are connected, and the area marked by the connecting line is determined as Po in water 210 An abnormal region;
step 3.4) circumscribing a water chemical anomaly area in water, specifically: HCO in deep water-rich well water of herdsman 3 - And Cl - The position with the sum of the molar contents of more than 70% is defined as a water chemical abnormal hole in water, the water chemical abnormal holes in water are connected, and the area marked by the connection line is defined as a water chemical abnormal area in water;
step 3.5) circumscribing an abnormal region of oxidation-reduction capability Eh in water, specifically: defining an abnormal hole of the oxidation-reduction capacity Eh at a position where the oxidation-reduction capacity Eh in the water of the deep water-rich well of the herder is smaller than-30.0 mv, connecting the abnormal holes of the oxidation-reduction capacity Eh, and determining a connection-circled area as an abnormal area of the oxidation-reduction capacity Eh;
step 3.6), defining water mineralization abnormal areas at positions with mineralization of 1.0-5.0 in water of deep water-rich wells of herdsmen, connecting the water mineralization abnormal holes, and determining the area marked by the connection line as the water mineralization abnormal areas;
step four, comprehensively predicting and determining uranium ore formation distant view area
Determining a water-bearing layer distribution area, a uranium mineralization abnormal area in water and a favorable uranium mineralization area, wherein the overlapped area of the water-bearing layer distribution area, the uranium mineralization abnormal area and the favorable uranium mineralization area is a uranium mineralization remote scenic area;
the determination of uranium mineralization abnormal region in water is specifically that the uranium radium balance coefficient Kp abnormal region in water and Po in water 210 Overlapping the abnormal areas, namely overlapping the uranium abnormal areas in water, wherein the overlapping areas are the uranium mineralization abnormal areas in water;
the determination of the favorable uranium mining area is specifically carried out by overlapping a water chemical abnormal area, a water oxidation-reduction capability Eh abnormal area and a water mineralization degree abnormal area, and the overlapping area is the favorable uranium mining area.
2. The method for rapidly positioning hydrologic process of sandstone uranium ore formation remote areas in grassland coverage area according to claim 1, wherein the investigation and sampling of the herdsmen water well in the first step comprises determining information of the herdsmen water well, and recording coordinates, water well depth, water quantity and water quality of the herdsmen water well in detail.
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| 柴达木盆地北缘鱼卡地区砂岩型铀成矿条件及成矿潜力分析;廉康;赵兴齐;王继斌;宋炎;;铀矿地质(03);全文 * |
| 腾格尔坳陷西南缘水文地质及放射性水化学特征;林效宾;李西得;邹耀林;谢惠丽;陶思远;;世界核地质科学(04);全文 * |
| 长城堡岩体西段放射性水文地质特征及其找矿方向;董光国;戴永久;;铀矿地质(02);全文 * |
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