Method and device for predicting drilling water inflow range of in-situ leaching mine and electronic equipment

Abstract

The invention relates to a drilling water inflow range prediction method and device of an in-situ leaching mine and electronic equipment, and relates to the technical field of mineral engineering, and the method comprises the steps: carrying out a water pumping test on an ore-bearing and water-bearing stratum in a target mine to obtain hydrogeological parameters; calculating a permeability coefficient result based on the permeability coefficient, determining a permeability coefficient range according to the permeability coefficient result, and performing statistical analysis on the plurality of water burst coefficients to determine a water burst coefficient range; according to the initial drilling water inflow standard value and the water inflow coefficient range, the depth reduction range is determined; according to the supply radius, the depth reduction range, the permeability coefficient range, the filter length and the drilling radius, the water inflow range under different conditions is calculated, by adopting the technical scheme, the water inflow range of the well completion drilling hole in the mining area is obtained, the expected standard of the water inflow is corrected, theoretical support is provided for evaluation of the well completion quality of the drilling hole, and the well completion quality of the drilling hole is improved. Therefore, the stable and efficient production and operation of the in-situ leaching uranium mine can be ensured.

Description

Technical Field

[0001] This disclosure relates to the field of mining engineering technology, specifically to a method, apparatus, and electronic equipment for predicting the range of borehole water inflow in in-situ leaching mines. Background Technology

[0002] In the production process of in-situ leaching uranium mines, the water volume during borehole operation is a key parameter for ensuring the normal operation of the mine, directly affecting the leaching cycle and resource recovery rate. Therefore, after the borehole is completed, the quality of the borehole completion must be inspected to assess whether the water inflow meets the expected standards.

[0003] However, different ore layers have different mineral-bearing and aquifer characteristics, such as lithological distribution, formation permeability, and groundwater recharge capacity. These factors will have varying degrees of impact on the water inflow characteristics of the borehole, making it impossible for the water inflow to accurately reflect the well completion quality, thereby hindering the stable and efficient production operation of in-situ leaching uranium mines. Summary of the Invention

[0004] In view of this, this disclosure provides a method, device and electronic equipment for predicting the range of borehole water inflow in in-situ leaching mines. The main purpose is to solve the technical problem that different mineral strata have different mineral-bearing and aquifer characteristics, which affect the water inflow characteristics of boreholes to varying degrees, thus making it impossible for the water inflow to accurately reflect the well completion quality, thereby hindering the stable and efficient production and operation of in-situ leaching uranium mines.

[0005] In a first aspect, this disclosure provides a method for predicting the range of borehole water inflow in in-situ leaching mines, including: Pumping tests are conducted on the mineral-bearing aquifer in the target mine to obtain hydrogeological parameters, which include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. The permeability coefficient of the pumping test is calculated based on the permeability coefficient, and the permeability coefficient range of the ore-bearing aquifer of the target mine is determined based on the permeability coefficient. Statistical analysis is performed on the multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. Based on the initial borehole water inflow standard value of the target mine and the range of the water inflow coefficient, determine the drawdown range corresponding to the initial borehole water inflow standard value; Based on the supply radius, the drawdown range, the permeability coefficient range, the filter length, and the borehole radius, the inflow range under different permeability coefficients and drawdown conditions is calculated.

[0006] Secondly, this disclosure provides a device for predicting the range of borehole water inflow in in-situ leaching mines, comprising: The acquisition module is used to conduct pumping tests on the mineral-bearing aquifer in the target mine to obtain hydrogeological parameters, which include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. The first determining module is used to calculate the permeability coefficient result of the pumping test based on the permeability coefficient, determine the permeability coefficient range of the ore-bearing aquifer of the target mine based on the permeability coefficient result, and perform statistical analysis on multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. The second determining module is used to determine the drawdown range corresponding to the initial borehole water inflow standard value based on the initial borehole water inflow standard value of the target mine and the water inflow coefficient range. The first calculation module is used to calculate the inflow range under different permeability coefficients and different drawdown conditions based on the supply radius, the drawdown range, the permeability coefficient range, the filter length, and the borehole radius.

[0007] Thirdly, this disclosure provides an electronic device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor executes the computer program to implement the method for predicting the borehole water inflow range in the leaching mine described in the first aspect.

[0008] Fourthly, this disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for predicting the range of borehole water inflow in leached mines as described in the first aspect.

[0009] By employing the above technical solution, this disclosure provides a method, apparatus, and electronic equipment for predicting the borehole inflow range in in-situ leaching mines. Compared with existing technologies, this disclosure can obtain hydrogeological parameters by conducting pumping tests on the ore-bearing aquifer in the target mine. These hydrogeological parameters include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. Based on the permeability coefficient, the permeability coefficient result of the pumping test is calculated, and the permeability coefficient range of the ore-bearing aquifer in the target mine is determined according to the permeability coefficient result. Furthermore, multiple inflow coefficients calculated from multiple pumping tests are statistically analyzed to determine the inflow coefficient range of the target mine. Based on the initial borehole inflow standard value and the inflow coefficient range of the target mine, the drawdown range corresponding to the initial borehole inflow standard value is determined. Based on the supply radius, drawdown range, permeability coefficient range, filter length, and borehole radius, the inflow range under different permeability coefficients and different drawdown conditions is calculated. By adopting the above technical solution, this disclosure obtains the water inflow range of the well drilling in the mining area, corrects the expected standard of water inflow, provides theoretical support for the assessment of well drilling quality, guides the timely handling of problematic boreholes on site, and thus ensures the stable and efficient production operation of in-situ leaching uranium mines.

[0010] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0012] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A flowchart illustrating a method for predicting the range of borehole water inflow in a geothermal leaching mine, provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of a pumping test provided in an embodiment of the present disclosure; Figure 3 An embodiment provided by this disclosure S – lg( t / r 2 ) Schematic diagram of the curve; Figure 4This is a schematic diagram of a permeability coefficient fitting result provided in an embodiment of the present disclosure; Figure 5 This is a schematic diagram illustrating the calculation of the descent range provided in an embodiment of the present disclosure; Figure 6 This is a schematic diagram of a first supply radius fitting provided in an embodiment of the present disclosure; Figure 7 A schematic diagram of the stratigraphic lithology distribution of a filter window portion provided in an embodiment of this disclosure; Figure 8 This is a schematic diagram of a borehole water inflow range prediction device for an embodiment of the present disclosure. Detailed Implementation

[0014] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description. It should be noted that, unless otherwise specified, the embodiments of this disclosure and the features described therein can be combined with each other.

[0015] The following describes, with reference to the accompanying drawings, a method, apparatus, and electronic equipment for predicting the borehole water inflow range in in-situ leaching mines according to embodiments of the present disclosure.

[0016] This disclosure provides a method, apparatus, and electronic equipment for predicting the range of borehole water inflow in in-situ leaching mines. The main purpose is to solve the technical problem that different mineral strata have different mineral-bearing and aquifer characteristics, which affect the water inflow characteristics of boreholes to varying degrees. As a result, the water inflow cannot accurately reflect the well completion quality, thus hindering the stable and efficient production and operation of in-situ leaching uranium mines.

[0017] like Figure 1 As shown, embodiments of this disclosure provide a method for predicting the range of borehole water inflow in in-situ leaching mines, including: Step 101: Conduct pumping tests on the ore-bearing aquifer in the target mine to obtain hydrogeological parameters, including at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius.

[0018] The target mine can be a specific uranium mine that is currently being explored, evaluated, or mined.

[0019] Mineral-bearing aquifers can be rock or soil layers that contain both uranium resources and are rich in groundwater, in which the groundwater can flow freely.

[0020] In-situ leaching mining, the core technology lies in eliminating the need to mine the ore to the surface. Instead, specific leaching agents (such as sulfuric acid or ammonium bicarbonate solutions) are injected into the ore-bearing aquifer through injection boreholes drilled within the ore layer. The leaching agents react chemically with the uranium minerals underground, forming water-soluble complexes. These uranium-rich leachates are then pumped to the surface for further extraction, precipitation, and purification at a surface facility, ultimately achieving in-situ mining that integrates both mining and smelting processes.

[0021] Hydrogeological parameters can be used as quantitative indicators to describe the hydraulic properties and geometric characteristics of mineral-bearing aquifers.

[0022] This disclosure provides a method for predicting the range of borehole water inflow in in-situ leaching mines. It obtains the inflow coefficient and permeability coefficient of the ore-bearing aquifer through pumping tests, thereby predicting the range of borehole water inflow. Specific implementation steps are as follows: Figure 1 As shown.

[0023] First, conduct pumping tests. Specifically, conduct multiple pumping tests (no fewer than 5 times, with the number of tests and the selection of test areas determined based on the actual conditions of the mine) at the target mine's mineral-bearing aquifer to obtain the hydrogeological parameters of the aquifer. For example... Figure 2 As shown in the schematic diagram of the pumping test, each pumping test can set up one pumping hole and no less than four observation holes, generally distributed at different distances and locations from the pumping hole. At the start of the pumping test, any human disturbance to the groundwater should be avoided within a range of at least 100 meters around the pumping hole and observation holes. The test duration and stable pumping rate are set according to the characteristics of the target mine, generally with a pumping duration of no less than 24 hours and a stable pumping rate of no less than 2 m³ / h. 3 / h. Multiple stable pumping volumes can be designed for a single test, with each stable pumping volume having the same pumping time, set according to the actual site conditions.

[0024] Hydrogeological parameters of mineral-bearing aquifers can include permeability coefficient, inflow coefficient of different pumping holes, supply radius, filter length, borehole radius, etc.

[0025] The permeability coefficient is used to measure the ease with which groundwater flows through mineralized aquifers (i.e., the permeability of mineralized aquifers). A high permeability coefficient indicates that the rock or soil has large pores and that the mineralized aquifer (such as a gravel layer) has good permeability, while a low permeability coefficient indicates that the rock or soil has small pores and that the mineralized aquifer (such as a clay layer) has poor permeability.

[0026] The inflow coefficient can be used to reflect the water-bearing capacity of mineral-bearing aquifers as well as the quality of the borehole itself.

[0027] The supply radius can be the effective radius of the water supply from the mineralized aquifer to the pumping hole during a pumping test.

[0028] The filter length can be the effective length of the filter pipe installed in the borehole.

[0029] In the specific application scenario, eight pumping tests were conducted at the target mine. The test sites were relatively dispersed, distributed across different mining areas or at the junctions of mining areas, ensuring that the test results could effectively reflect the characteristics of the ore-bearing aquifer in the target mine. One pumping well and four observation wells were set up for each pumping test, distributed at different locations on the pumping well, spaced at intervals of 30, 60, 90, and 120 meters. It was ensured that the groundwater environment within at least 100 meters of the pumping well and observation wells was not disturbed by human activities for at least 24 hours before the start of the pumping test and during the test itself. Only one set of steady-state pumping was designed for the pumping test, with a pumping duration of 24 hours and a steady-state pumping rate. Q 5 m 3 / h.

[0030] Step 102: Calculate the permeability coefficient result of this pumping test based on the permeability coefficient, determine the permeability coefficient range of the target mine's ore-bearing aquifer based on the permeability coefficient result, and perform statistical analysis on the multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine.

[0031] The permeability coefficient result can be the specific permeability coefficient value calculated from a single pumping test.

[0032] The permeability coefficient range can be the overall permeability coefficient fluctuation range of the mine determined through statistical analysis of multiple test results.

[0033] The range of the water inflow coefficient can be the fluctuation range of the water inflow capacity of the mine aquifer determined based on the statistical results of the water inflow coefficient from multiple pumping tests.

[0034] For embodiments of this disclosure, the calculation process of the permeability coefficient may include: Record the water level drawdown data of the observation well during the pumping test. The water level drawdown data includes the water level drawdown during the pumping test, the pumping time after the start of the pumping test, and the distance between the observation well and the pumping well. The first target curve is plotted based on the drawdown, pumping time, and the distance between the observation well and the pumping well. The permeability coefficient of the mineral-bearing aquifer is calculated using the Jacob formula and the slope of the first target curve.

[0035] The first target curve can be: S – lg( t / r 2 )curve, S This can be used to draw down the water level during pumping tests. t This can be the pumping time after the start of the pumping test. r This can be the distance between the observation hole and the liquid extraction hole.

[0036] like Figure 3 of S – lg( t / r 2 As shown in the schematic diagram, the corresponding hydrogeological parameters can be calculated analytically based on the field measurement data. After the pumping test is completed, the results of the change in well water level drawdown over time can be compiled (i.e., the well water level drawdown data during the pumping test are recorded), and the results of the test period can be plotted. S – lg( t / r 2 )curve.

[0037] Theis formula can be approximated by Jacob's formula, resulting in:

[0038] Where s can be the drawdown, Q can be the pumping rate, K can be the permeability coefficient, and M can be the thickness of the ore layer that has been opened, i.e., the length of the borehole filter. It can be the storage coefficient (or elastic water release coefficient), t can be the pumping time, and r can be the horizontal distance from the observation hole to the center of the pumping hole.

[0039] According to the Jacob approximation formula, S – lg(t / r2) has a linear relationship, and the permeability coefficient of the mineral-bearing aquifer in this region can be obtained by using the slope.

[0040] In this embodiment of the disclosure, the permeability coefficient result of the pumping test is calculated based on the permeability coefficient, and the permeability coefficient range of the target mine's ore-bearing aquifer is determined based on the permeability coefficient result. Specifically, this may include: In a single pumping test, multiple permeability coefficients are calculated through multiple observation wells, and the average value of these multiple permeability coefficients is taken as the permeability coefficient result of the pumping test. Statistical analysis was performed on the permeability coefficient results of multiple pumping tests to obtain the permeability coefficient range of the ore-bearing aquifer in the target mine.

[0041] In this embodiment, as Figure 1 As shown, after a pumping test, four permeability coefficients can be calculated using four observation wells. The average of these four permeability coefficients is taken as the permeability coefficient result for that pumping test. Figure 4 As shown in Table 1, the permeability coefficient results are presented. Statistical analysis of the permeability coefficient results from multiple pumping tests revealed that the permeability coefficient range for the target mine is 0.65-1.82 m / d.

[0042] Table 1 Permeability Coefficient Results

[0043] For the embodiments of this disclosure, the calculation process for the inflow coefficient of different extraction holes may specifically include: Obtain the inflow rate and corresponding drawdown data of different pumping holes during the pumping test; The ratio of the inflow rate of different extraction holes to the corresponding drawdown data is determined as the inflow coefficient of different extraction holes.

[0044] In this embodiment, as Figure 1 As shown, after the pumping test is completed, the drawdown results of the pumping holes can be compiled. Based on the drawdown data of this hydrological test, the inflow coefficient of different pumping holes can be calculated. The inflow coefficient reflects the amount of water flowing into the borehole under a certain drawdown. There are various relationships between the inflow rate Q and the drawdown S. This disclosure assumes a linear relationship between the drawdown and the inflow rate, then the inflow coefficient m = Q / S. One inflow coefficient can be obtained after one pumping test. By statistically analyzing the inflow coefficient results of multiple pumping tests, the range of inflow coefficients for the target mine can be obtained, which can be 0.19-0.71 m. 2 / h, the range of inflow coefficients is shown in Table 2.

[0045] Table 2 Results of Inflow Coefficient

[0046] Step 103: Determine the drawdown range corresponding to the initial borehole water inflow standard value and the range of water inflow coefficients of the target mine.

[0047] The initial borehole water inflow standard value can be the water inflow level that the borehole should achieve, which is set in advance based on experience, economic analysis or early production data.

[0048] The drawdown range can be the allowable water level drop range obtained by back-calculating the inflow coefficient under the constraint of the initial inflow standard value.

[0049] In this embodiment of the disclosure, determining the drawdown range corresponding to the initial borehole water inflow standard value based on the target mine's initial borehole water inflow standard value and water inflow coefficient range may specifically include: Using the maximum and minimum inflow coefficients within the range of inflow coefficients as slopes, linear relationships between inflow volume and drawdown are established, and a second target curve is plotted in the same coordinate system based on these linear relationships. Determine the two intersection points between the initial standard value of borehole water inflow and the second target curve; Read the drawdown values ​​corresponding to the two intersection points, and determine the drawdown range corresponding to the initial borehole inflow standard value based on the drawdown values.

[0050] The second target curve can be the QS curve, where Q can be the inflow rate and S can be the drawdown.

[0051] In this embodiment, as Figure 5 As shown, the drawdown range is obtained. Specifically, the drawdown range under this drawdown condition can be calculated based on the initial borehole water inflow standard value and the range of water inflow coefficients of the target mine. The QS curve of the target mine is plotted, where a larger slope in the QS curve reflects a larger water inflow coefficient. The drawdown range can be calculated based on the intersection of the initial borehole water inflow standard value and the QS curve.

[0052] The standard value for the initial borehole water inflow of the target mine is 8 m³. 3 Based on the intersection of the initial borehole inflow standard value and the QS curve, the drawdown range is calculated to be 11.3-42.1 meters, with a maximum drawdown of 42.1 meters.

[0053] Step 104: Calculate the inflow range under different permeability coefficients and different drawdown conditions based on the supply radius, drawdown range, permeability coefficient range, filter length, and borehole radius.

[0054] For embodiments of this disclosure, the calculation process for the supply radius may specifically include: Determine the first supply radius and determine the second supply radius; The supply radius is obtained by performing a weighted summation operation based on the weight coefficients corresponding to the first and second supply radii.

[0055] In this embodiment, the supply radius r e The calculation formula can be: r e = α r e1 + β r e2 in, α and β It can be a weighting coefficient. α + β =1, α and β The value can be assigned according to the actual situation of the mine. In this disclosure α =0.6, β =0.4, r e1 The first supply radius can be determined based on the drawdown fitting from the pumping test. r e2This can be a second supply radius, which can be assigned a value based on the lithological distribution characteristics of the strata. The calculated supply radius corresponds one-to-one with the permeability coefficient results of the corresponding area's pumping test.

[0056] In this embodiment of the disclosure, determining the first supply radius may specifically include: Based on the drawdown data of the pumping hole and at least one observation hole in the pumping test, plot the logarithmic relationship curve between the drawdown data and the radial distance; By fitting a trend line to the logarithmic relationship curve, a fitted curve is obtained; The radial distance where the fitted curve intersects the horizontal axis is determined as the first supply radius.

[0057] In this embodiment, the first supply radius is calculated as follows: In planar radial flow, pressure has a logarithmic relationship with coordinate r. Looking at the entire formation, the pressure distribution at each point in the formation is a surface formed by rotating this logarithmic curve around the well axis. This surface resembles a funnel and is commonly referred to as a pressure drop funnel. The influence radius of the pumping hole can be fitted using a logarithmic trend line based on the drawdown results of the pumping hole and observation well from the hydrological test. The intersection of the trend line and the horizontal axis is taken as the first supply radius. The fitting method is as follows: Figure 6 As shown, r e1 The fitting results are shown in Table 3 below.

[0058] In this embodiment of the disclosure, determining the second supply radius may specifically include: Obtain the different lithological thicknesses within the borehole filter section and their corresponding preset supply radii; The difference between the sum of the products of different lithological thicknesses and their corresponding preset supply radii and the total length of the filter is determined as the second supply radius.

[0059] In this embodiment, the second supply radius is calculated as follows: the formation lithology distribution of the filter window section can be analyzed based on the well logging interpretation results of the ore-bearing sections of the pumping test wells and observation wells.

[0060] The formula for calculating the second supply radius is: r e2 = ( h 1 r 1+ h 2 r 2+ h 3 r 3+……) / h 过滤器 .in, h i It can reflect the thickness of different lithologies within the borehole filter section. re2 The fitting results are shown in Table 3 below. r i This disclosure reflects expert experience values ​​for the supply radius corresponding to different lithologies. r 粗砂岩 =300m, r 中砂岩 =200, r 细砂岩 =100. The lithological distribution of the stratigraphic sections within the filter opening is as follows: Figure 7 As shown. Supply radius r e2 The fitting results are shown in Table 3 below.

[0061] Table 3 Supply radius results

[0062] For the embodiments of this disclosure, the water inflow rate of the borehole Q The calculation formula is:

[0063] in, Q This can be the flow rate. K It can be the permeability coefficient. M This can be the filter length, Δ h It can be used to reduce depth. r e It can be the supply radius. r w It can be the borehole radius.

[0064] Based on the parameters obtained in the above steps, the water inflow range for boreholes with different permeability ranges under maximum drawdown conditions can be calculated to be 5.1-12 m. 3 The flow rate is shown in Table 4. The results indicate that the minimum borehole water flow rate is 5.1 m³ / h. 3 / h, lower than the expected initial borehole water inflow of 8 m³ / h for the target mine. 3 The expected water inflow rate of the borehole is / h, which may be caused by geological factors of the target ore layer. Therefore, during the well completion and acceptance process of mine drilling, it is necessary to revise the expected value of the borehole water inflow to provide theoretical support for the assessment of borehole completion quality, guide the timely handling of problematic boreholes on site, and ensure the efficient and stable development of uranium resources.

[0065] Table 4 Borehole Water Volume Range

[0066] This disclosure provides a method for predicting borehole water volume during the construction of a uranium leaching mine. The mine is currently in the borehole completion stage in various mining areas. During the acceptance process after completion, a discrepancy was found between the actual water volume and the expected inflow standard. To determine whether this discrepancy was caused by geological factors or the quality of the well completion, this disclosure successfully predicted the range of borehole water inflow in the mine, providing methodological support for revising the inflow standard.

[0067] In summary, according to the method for predicting the borehole inflow range in a ground-leaching mine provided in this disclosure, compared with the existing technology, this disclosure can obtain hydrogeological parameters by conducting pumping tests on the ore-bearing aquifer in the target mine. These hydrogeological parameters include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. Based on the permeability coefficient, the permeability coefficient result of the pumping test is calculated, and the permeability coefficient range of the ore-bearing aquifer in the target mine is determined according to the permeability coefficient result. Furthermore, statistical analysis is performed on multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. Based on the initial borehole inflow standard value and the inflow coefficient range of the target mine, the drawdown range corresponding to the initial borehole inflow standard value is determined. Based on the supply radius, drawdown range, permeability coefficient range, filter length, and borehole radius, the inflow range under different permeability coefficients and different drawdown conditions is calculated. By adopting the above technical solution, this disclosure obtains the water inflow range of the well drilling in the mining area, corrects the expected standard of water inflow, provides theoretical support for the assessment of well drilling quality, guides the timely handling of problematic boreholes on site, and thus ensures the stable and efficient production operation of in-situ leaching uranium mines.

[0068] Based on the above Figure 1 The specific implementation of the method shown in this embodiment provides a device for predicting the range of borehole water inflow in in-situ leaching mines, such as... Figure 8 As shown, the device includes: an acquisition module 31, a first determination module 32, a second determination module 33, and a first calculation module 34; The acquisition module 31 is used to conduct a pumping test on the mineral-bearing aquifer in the target mine to obtain hydrogeological parameters, which include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. The first determining module 32 is used to calculate the permeability coefficient result of the pumping test based on the permeability coefficient, determine the permeability coefficient range of the ore-bearing aquifer of the target mine based on the permeability coefficient result, and perform statistical analysis on the multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. The second determining module 33 is used to determine the drawdown range corresponding to the initial borehole water inflow standard value based on the initial borehole water inflow standard value of the target mine and the water inflow coefficient range. The first calculation module 34 is used to calculate the range of water inflow under different permeability coefficients and different drawdown conditions based on the supply radius, the drawdown range, the permeability coefficient range, the filter length, and the borehole radius.

[0069] In specific application scenarios, such as Figure 8 As shown, the device also includes: a second computing module 35; The second calculation module 35 is used to record the drawdown data of the observation well during the pumping test. The drawdown data includes the drawdown during the pumping test, the pumping time after the start of the pumping test, and the distance between the observation well and the pumping well. A first target curve is plotted based on the drawdown, the pumping time, and the distance between the observation well and the pumping well. The permeability coefficient of the mineral-bearing aquifer is calculated using the Jacob formula and the slope of the first target curve.

[0070] In specific application scenarios, the first determining module 32 is specifically used for: In a single pumping test, multiple permeability coefficients are calculated through multiple observation wells, and the average value of the multiple permeability coefficients is taken as the permeability coefficient result of the pumping test. Statistical analysis was performed on the permeability coefficient results of multiple pumping tests to obtain the permeability coefficient range of the ore-bearing aquifer in the target mine.

[0071] In specific application scenarios, such as Figure 8 As shown, the device also includes: a third computing module 36; The third calculation module 36 is used to obtain the water inflow and corresponding drawdown data of the different pumping holes during the pumping test; and to determine the ratio of the water inflow and corresponding drawdown data of the different pumping holes as the water inflow coefficient of the different pumping holes.

[0072] In specific application scenarios, the second determining module 33 is specifically used for: Using the maximum and minimum inflow coefficients within the range of inflow coefficients as slopes, linear relationships between inflow volume and drawdown are established, and a second target curve is plotted in the same coordinate system based on these linear relationships. Determine the two intersection points between the initial borehole water inflow standard value and the second target curve; Read the drawdown values ​​corresponding to the two intersection points, and determine the drawdown range corresponding to the initial borehole inflow standard value based on the drawdown values.

[0073] In specific application scenarios, such as Figure 8 As shown, the device also includes: a third determining module 37; The third determining module 37 is used to determine the first supply radius and the second supply radius; and to obtain the supply radius by performing a weighted summation operation based on the weight coefficients corresponding to the first supply radius and the second supply radius.

[0074] In specific application scenarios, the third determining module 37 is specifically used for: Based on the drawdown data of the pumping hole and at least one observation hole in the pumping test, plot the logarithmic relationship curve between the drawdown data and the radial distance; The logarithmic relationship curve is fitted with a trend line to obtain a fitted curve; The radial distance at which the fitted curve intersects the horizontal axis is determined as the first supply radius.

[0075] In specific application scenarios, the third determining module 37 is specifically used for: Obtain the different lithological thicknesses within the borehole filter section and their corresponding preset supply radii; The difference between the sum of the products of the different lithological thicknesses and their corresponding preset supply radii and the total length of the filter is determined as the second supply radius.

[0076] It should be noted that other corresponding descriptions of the functional units involved in the borehole water inflow range prediction device for in-situ leaching mines provided in this embodiment can be found in [reference]. Figure 1 The corresponding description in [the document] will not be repeated here.

[0077] Based on the above, Figure 1 Accordingly, this embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method. Figure 1 The method shown.

[0078] Based on this understanding, the technical solution disclosed herein can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or portable hard drive) and includes several instructions to cause a computer device (such as a personal computer, server, or network device) to execute the methods of various implementation scenarios of this disclosure.

[0079] Based on the above, Figure 1 The method shown, and Figure 8 To achieve the above objectives, this disclosure also provides an electronic device, comprising a storage medium and a processor; the storage medium for storing a computer program; and the processor for executing the computer program to implement the above-described virtual device embodiments. Figure 1 The method shown.

[0080] Optionally, the aforementioned physical devices may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB interfaces, card reader interfaces, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Wi-Fi interfaces), etc.

[0081] Those skilled in the art will understand that the physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0082] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the aforementioned physical device, supporting the operation of the borehole water inflow range prediction program for in-situ leaching mines, as well as other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software within the in-situ leaching mine borehole water inflow range prediction physical device.

[0083] Through the above description of the embodiments, those skilled in the art can clearly understand that this disclosure can be implemented by means of software plus necessary general-purpose hardware platforms, or it can be implemented by hardware. By applying the solution of this embodiment, compared with the prior art, this disclosure can obtain hydrogeological parameters by conducting pumping tests on the ore-bearing aquifer in the target mine. The hydrogeological parameters include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius; calculate the permeability coefficient result of the pumping test based on the permeability coefficient, and determine the permeability coefficient range of the ore-bearing aquifer in the target mine based on the permeability coefficient result; statistically analyze the multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine; determine the drawdown range corresponding to the initial borehole inflow standard value and the inflow coefficient range of the target mine; and calculate the inflow range under different permeability coefficients and different drawdown conditions based on the supply radius, drawdown range, permeability coefficient range, filter length, and borehole radius. By adopting the above technical solution, this disclosure obtains the water inflow range of the well drilling in the mining area, corrects the expected standard of water inflow, provides theoretical support for the assessment of well drilling quality, guides the timely handling of problematic boreholes on site, and thus ensures the stable and efficient production operation of in-situ leaching uranium mines.

[0084] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0085] The above are merely specific embodiments of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for predicting the range of borehole water inflow in in-situ leaching mines, characterized in that, The method includes: Pumping tests are conducted on the mineral-bearing aquifer in the target mine to obtain hydrogeological parameters, which include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. The permeability coefficient of the pumping test is calculated based on the permeability coefficient, and the permeability coefficient range of the ore-bearing aquifer of the target mine is determined based on the permeability coefficient. Statistical analysis is performed on the multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. Based on the initial borehole water inflow standard value of the target mine and the range of the water inflow coefficient, determine the drawdown range corresponding to the initial borehole water inflow standard value; Based on the supply radius, the drawdown range, the permeability coefficient range, the filter length, and the borehole radius, the inflow range under different permeability coefficients and drawdown conditions is calculated.

2. The method according to claim 1, characterized in that, The calculation process of the permeability coefficient includes: Record the water level drawdown data of the observation well during the pumping test. The water level drawdown data includes the water level drawdown during the pumping test, the pumping time after the start of the pumping test, and the distance between the observation well and the pumping well. A first target curve is plotted based on the water level drawdown, the pumping time, and the distance between the observation hole and the pumping hole. The permeability coefficient of the mineral-bearing aquifer is calculated using the Jacob formula and the slope of the first target curve.

3. The method according to claim 2, characterized in that, The calculation of the permeability coefficient result of the pumping test based on the permeability coefficient, and the determination of the permeability coefficient range of the target mine's ore-bearing aquifer based on the permeability coefficient result, includes: In a single pumping test, multiple permeability coefficients are calculated through multiple observation wells, and the average value of the multiple permeability coefficients is taken as the permeability coefficient result of the pumping test. Statistical analysis was performed on the permeability coefficient results of multiple pumping tests to obtain the permeability coefficient range of the ore-bearing aquifer in the target mine.

4. The method according to claim 1, characterized in that, The calculation process for the inflow coefficient of different pumping holes includes: Obtain the water inflow and corresponding drawdown data of the different pumping holes during the pumping test; The ratio of the water inflow rate of the different extraction holes to the corresponding drawdown data is determined as the water inflow coefficient of the different extraction holes.

5. The method according to claim 1, characterized in that, The step of determining the drawdown range corresponding to the initial borehole water inflow standard value based on the initial borehole water inflow standard value of the target mine and the water inflow coefficient range includes: Using the maximum and minimum inflow coefficients within the range of inflow coefficients as slopes, linear relationships between inflow volume and drawdown are established, and a second target curve is plotted in the same coordinate system based on these linear relationships. Determine the two intersection points between the initial borehole water inflow standard value and the second target curve; Read the drawdown values ​​corresponding to the two intersection points, and determine the drawdown range corresponding to the initial borehole inflow standard value based on the drawdown values.

6. The method according to claim 1, characterized in that, The calculation process for the supply radius includes: Determine the first supply radius and determine the second supply radius; The supply radius is obtained by performing a weighted summation operation based on the weight coefficients corresponding to the first supply radius and the second supply radius.

7. The method according to claim 6, characterized in that, Determining the first supply radius includes: Based on the drawdown data of the pumping hole and at least one observation hole in the pumping test, plot the logarithmic relationship curve between the drawdown data and the radial distance; The logarithmic relationship curve is fitted with a trend line to obtain a fitted curve; The radial distance at which the fitted curve intersects the horizontal axis is determined as the first supply radius.

8. The method according to claim 6, characterized in that, Determining the second supply radius includes: Obtain the different lithological thicknesses within the borehole filter section and their corresponding preset supply radii; The difference between the sum of the products of the different lithological thicknesses and their corresponding preset supply radii and the total length of the filter is determined as the second supply radius.

9. A device for predicting the range of borehole water inflow in in-situ leaching mines, characterized in that, include: The acquisition module is used to conduct pumping tests on the mineral-bearing aquifer in the target mine to obtain hydrogeological parameters, which include at least the permeability coefficient, the inflow coefficient of different pumping holes, the supply radius, the filter length, and the borehole radius. The first determining module is used to calculate the permeability coefficient result of the pumping test based on the permeability coefficient, determine the permeability coefficient range of the ore-bearing aquifer of the target mine based on the permeability coefficient result, and perform statistical analysis on multiple inflow coefficients calculated from multiple pumping tests to determine the inflow coefficient range of the target mine. The second determining module is used to determine the drawdown range corresponding to the initial borehole water inflow standard value based on the initial borehole water inflow standard value of the target mine and the water inflow coefficient range. The first calculation module is used to calculate the inflow range under different permeability coefficients and different drawdown conditions based on the supply radius, the drawdown range, the permeability coefficient range, the filter length, and the borehole radius.

10. An electronic device comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 8.

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