Method and device for regulating water level of groundwater in uranium coal coordinated mining uranium mine area

Abstract

The application provides a water level regulation test method and device for uranium coal coordinated mining of a uranium mining area. The method comprises the following steps: controlling a submersible pump in a pumping well to be turned on, and determining a pumping amount of the submersible pump; controlling injection pumps in different injection wells to be turned on at the same time, and controlling injection flow rates in each injection well to slowly rise to a preset flow rate; when water levels of multiple observation wells are stable, recording the water level values of the multiple observation wells when the injection pumps in the different injection wells are turned on at the same time; determining a maximum water level value in the multiple water level values as an optimal injection amount, and determining injection wells that are turned on at the same time corresponding to the maximum water level value as an optimal injection scheme. The application can ensure a water level required for uranium mining in the process of coal mining, and guide uranium coal resource coordinated mining.

Description

Technical Field

[0001] This invention relates to the field of uranium and coal mining technology, and in particular to a test method and apparatus for groundwater level control in uranium mining areas where uranium and coal are mined in a coordinated manner. Background Technology

[0002] Uranium is a vital national strategic resource and energy mineral. Coal is my country's dominant energy source. Both uranium and coal play crucial roles in the country's economy, social development, and national security. Both are primarily found in sedimentary basins, and under specific geological conditions, can form uranium-coal symbiotic deposits. Heterogeneous symbiotic deposits refer to mineral resources occurring in different strata of the same deposit, forming a unique pattern of overlapping horizontally and vertically.

[0003] Both uranium and coal are strategic mineral resources. Coal mining requires drainage measures, leading to a continuous decline in the regional groundwater level. Uranium mining generally employs in-situ leaching, which demands a high degree of sealing of the groundwater environment and therefore requires a certain pressure head. Therefore, when mining uranium and coal in uranium-coal co-existing deposits, there is an urgent need for a water level-raising measure to maintain the groundwater level in the uranium mining area at a process-acceptable level. Summary of the Invention

[0004] This invention provides a test method and apparatus for groundwater level control in uranium mining areas where uranium and coal are mined in a coordinated manner, in order to solve the problem that there are no groundwater level control measures in existing technologies when uranium and coal are mined in a coordinated manner.

[0005] In a first aspect, embodiments of the present invention provide a method for controlling the water level of groundwater in a uranium mining area where uranium and coal are mined in a coordinated manner. At a predetermined location within the uranium mining area, pumping wells, multiple injection wells, and multiple observation wells are set up according to the predetermined locations. The groundwater level control test in the uranium mining area where uranium and coal are mined in a coordinated manner includes:

[0006] Control the submersible pump in the pumping well to start, and determine the pumping capacity of the submersible pump;

[0007] Simultaneously start the injection pumps in different injection wells, and control the water flow rate in each injection well to slowly rise to the preset flow rate. When the water level of the multiple observation wells stabilizes, record the water level values ​​of the multiple observation wells when different injection wells are started simultaneously.

[0008] The maximum water level value among the multiple water level values ​​is determined as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the maximum water level value are the optimal water injection scheme.

[0009] In one possible implementation, the pumping well is located in an area outside the immersion well site where the water level is lower than a preset water level, and a submersible pump is installed inside the pumping well.

[0010] The plurality of water injection wells are located between the pumping well and the uranium mining area, and the line connecting the pumping well and the uranium mining area is perpendicular to the line connecting the plurality of water injection wells. Each water injection well is equipped with a closed injection pump at its surface wellhead.

[0011] The plurality of observation wells are located between the water injection well and the uranium mining area.

[0012] In one possible implementation, the distance between the plurality of injection wells is set at unequal intervals.

[0013] In one possible implementation, the diameter of the opening of the pumping well is 110 mm, the diameter of the final hole is 426 mm, the diameter of the seamless steel pipe inside is 273 mm, and the pipe wall thickness is 9 mm.

[0014] Each injection well has an opening diameter of 110mm, a final hole diameter of 245mm, and an internal seamless steel pipe with a diameter of 133mm and a wall thickness of 9mm.

[0015] In one possible implementation, the pumping well and the plurality of injection wells are gravel-filled filter wells, with the entire mineralized aquifer acting as a filter within the pumping well and the plurality of injection wells.

[0016] In one possible implementation, the control of the submersible pump in the pumping well to start and the determination of the pumping rate of the submersible pump include:

[0017] The submersible pump in the pumping well is turned on, and the pumping volume is gradually increased from zero to the pumping head of the submersible pump. After the pumping volume stabilizes at the pumping head of the submersible pump for a preset time, the pumping volume is recorded.

[0018] In one possible implementation, the injection pumps in different injection wells are simultaneously activated, and the injection flow rate in each well is slowly increased to a preset flow rate. Once the water levels in the multiple observation wells stabilize, the water level values ​​of the multiple observation wells when the different injection wells are simultaneously activated are recorded, including:

[0019] Combine any two injection wells to obtain all possible combinations of injection wells;

[0020] Check whether all injection well combinations have been tested;

[0021] If there are still injection well combinations that have not been tested, then the untested injection well combination is determined as the current injection well combination;

[0022] Simultaneously start the injection pumps in the current water injection combination, and control the water injection flow rate in the two water injection wells to slowly rise to the first preset flow rate and keep the flow rate constant. After the water level of the multiple observation wells stabilizes, record the water level values ​​of the multiple observation wells.

[0023] The injection pumps in the remaining injection wells are turned on one by one in sequence, and the combination of injection wells that are currently turned on at the same time has never been turned on at the same time, until all the injection pumps in the injection wells are turned on. The injection flow rate in the currently turned-on injection well is controlled to slowly rise to the second preset flow rate and then keep the flow rate constant. When the water level of the multiple observation wells is stable, the water level values ​​of the multiple observation wells when different injection wells are turned on are recorded.

[0024] Proceed to the step "Check if all injection well combinations have been tested";

[0025] Once all injection well combinations have been tested, the process ends.

[0026] In one possible implementation, identifying an untested injection well combination as the current injection well combination includes:

[0027] The injection well combination with the largest distance among all untested injection well combinations is identified as the current injection well combination.

[0028] The second preset flow rate is based on Determine, where V represents the preset flow rate, Q represents the pumping volume, and n represents the number of injection wells opened simultaneously.

[0029] One possible implementation also includes:

[0030] Once the water levels in the multiple observation wells have stabilized, record the average distance between the currently simultaneously opened injection wells.

[0031] The average distance between the injection wells that are opened simultaneously corresponding to the maximum water level is determined as the optimal injection distance;

[0032] The optimal water injection plan is determined by identifying the number of injection wells that should be opened simultaneously corresponding to the maximum water level, including:

[0033] The optimal water injection scheme is the combination of injection wells that are opened simultaneously at the maximum water level, with the fewest number of injection wells.

[0034] Secondly, embodiments of the present invention provide a test device for groundwater level control in a uranium mining area where uranium and coal are co-mined. At a predetermined location in the uranium mining area, pumping wells, multiple injection wells, and multiple observation wells are set up according to the predetermined locations. The test device for groundwater level control in a uranium mining area where uranium and coal are co-mined includes:

[0035] The control module is used to control the operation of the submersible pump in the pumping well and to determine the pumping volume of the submersible pump.

[0036] The control module is also used to control the simultaneous opening of the injection pumps in different injection wells, and to control the water flow rate in each injection well to slowly rise to the preset flow rate. When the water level of the multiple observation wells stabilizes, the module records the water level value of the multiple observation wells when the different injection wells are opened at the same time.

[0037] The determination module is used to determine the largest water level value among multiple water level values ​​as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the largest water level value are the optimal water injection scheme.

[0038] This invention provides a method and apparatus for controlling groundwater level in uranium mining areas during coordinated uranium-coal mining. The method involves controlling the operation of submersible pumps in pumping wells to determine the pumping rate; simultaneously controlling the operation of injection pumps in different injection wells and gradually increasing the injection flow rate in each well to a preset flow rate; recording the water level values ​​of multiple observation wells when they are simultaneously activated after the water levels stabilize; determining the maximum water level value as the optimal injection rate; and identifying the simultaneous activation of the injection wells corresponding to the maximum water level value as the optimal injection scheme. This method ensures the required water level for uranium mining during coal mining and guides the coordinated mining of uranium-coal resources. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart illustrating the implementation of the experimental method for groundwater level control in uranium mining areas where uranium and coal are coordinated, provided in this embodiment of the invention.

[0041] Figure 2 This is a schematic diagram showing the locations of the pumping well, injection well, and observation well provided in an embodiment of the present invention;

[0042] Figure 3(1) is a schematic diagram of the drilling structure of the ground immersion production hole provided in the embodiment of the present invention;

[0043] Figure 3(2) is a schematic diagram of the drilling structure of the pumping well provided in the embodiment of the present invention;

[0044] Figure 4 This is a flowchart illustrating the implementation of recording the water level values ​​of multiple observation wells when different injection wells are opened simultaneously, as provided in an embodiment of the present invention.

[0045] Figure 5 This is a schematic diagram of the groundwater level control test device in a uranium mining area for coordinated uranium-coal mining provided in this embodiment of the invention.

[0046] Figure 6 This is a schematic diagram of the terminal provided in an embodiment of the present invention. Detailed Implementation

[0047] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0048] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0049] Uranium is a vital national strategic resource and energy mineral. It plays a highly sensitive and irreplaceable role in meeting national defense needs and ensuring national strategic security. In recent years, with the adjustment of the national energy structure, nuclear power, as a representative of clean energy, has seen an increasing demand for uranium resources.

[0050] Coal is my country's dominant energy source, and China's economic development is inseparable from coal. For a considerable period of time, coal will remain my country's primary energy source and will not be replaced.

[0051] Uranium and coal play a vital role in various aspects of national economy, social development, and national security. Both are primarily found in sedimentary basins, where, under specific geological conditions, they can form uranium-coal symbiotic deposits. Large uranium deposits, often found in sandstone strata above and below coal seams, and in some coal seams, have been discovered in many basins in China, some of which are already operational.

[0052] Both uranium and coal are strategic mineral resources. Coal mining requires drainage measures, leading to a continuous decline in the regional groundwater level. Uranium mining generally employs in-situ leaching, which demands a high degree of sealing of the groundwater environment and therefore requires a certain pressure head. Therefore, when mining uranium and coal in uranium-coal co-existing deposits, there is an urgent need for a water level-raising measure to maintain the groundwater level in the uranium mining area at a process-acceptable level.

[0053] Figure 1 The flowchart illustrates the implementation of a groundwater level control test method for coordinated uranium-coal mining in an uranium ore area, as provided in this embodiment of the invention. At a predetermined location within the uranium ore area, pumping wells, multiple injection wells, and multiple observation wells are set up according to the predetermined locations.

[0054] See Figure 2 As shown, the pumping well is located in an area outside the immersion well site where the water level is lower than the preset water level, and a submersible pump is installed inside the pumping well.

[0055] The preset water level can be set according to the groundwater level in the uranium mining area. In this embodiment, the value of the preset water level is not limited, but pumping wells are set in low water level areas.

[0056] Submersible pumps can be high-lift submersible pumps to perform high-flow-rate extreme pumping, thereby simulating the drop in groundwater level in uranium mining areas caused by water release during coal mining.

[0057] See Figure 2 In the process, multiple water injection wells are set between the pumping wells and the uranium mining area, and the line connecting the pumping wells and the uranium mining area is perpendicular to the line connecting the multiple water injection wells. Each water injection well is equipped with a closed injection pump at its surface wellhead.

[0058] After the water pumped from the pumping well is directed to the injection system, it is distributed to the injection wells through a flow meter. This type of injection well is used to simulate the injection capacity of the aquifer and the water level rise capacity of the hydraulic curtain.

[0059] Figure 2 There are 4 water injection wells in the middle.

[0060] See Figure 2 In this project, multiple observation wells are located between the water injection wells and the uranium mining area. These observation wells can include water level observation wells and auxiliary observation wells. The auxiliary observation wells are test wells located on the side of the uranium mining area closest to the water injection wells, while the remaining observation wells are water level observation wells.

[0061] Water level observation wells are used to observe the water level rise effect at close range of the hydraulic curtain; auxiliary observation wells are used to observe the groundwater level rise effect in the uranium mine test area.

[0062] See Figure 2 The distance between multiple injection wells is set at unequal intervals. For example, the distance between four injection wells can be 20m, 30m, or 50m. Figure 2 In the diagram, the distance between injection wells Z1 and Z2 is 20m, the distance between injection wells Z2 and Z3 is 30m, and the distance between injection wells Z3 and Z4 is 50m. The above is only an example illustration.

[0063] By setting up simultaneous water injection schemes between different injection wells, the impact of injection spacing on the restoration effect of the hydraulic curtain can be evaluated.

[0064] To improve the injection capacity of the hydraulic curtain borehole, the pumping well and multiple injection wells are gravel-filled filter wells, and the entire mineralized aquifer is set as a filter in the pumping well and multiple injection wells. See Figures 3(1) and 3(2). Figure 3(1) shows the borehole structure of the leaching production borehole, and Figure 3(2) shows the borehole structure of the pumping well provided in this embodiment. The difference between the two lies in the setting of the filter. In the borehole structure of the leaching production borehole, the filter is set at a preset position in the mineralized aquifer, while in the borehole structure of the pumping well, the filter is set in the entire mineralized aquifer.

[0065] All pumping and injection wells are straight holes, formed in one diameter. The opening diameter of the pumping well is 110mm, the final diameter is 426mm, and the diameter of the seamless steel pipe inside is 273mm with a wall thickness of 9mm.

[0066] Each injection well has an opening diameter of 110mm, a final hole diameter of 245mm, and an internal seamless steel pipe with a diameter of 133mm and a wall thickness of 9mm.

[0067] See Figure 1 As shown, the groundwater level control test in the uranium mining area for coordinated uranium and coal mining is described in detail below:

[0068] Step 101: Control the submersible pump in the pumping well to start and determine the pumping volume of the submersible pump.

[0069] In one embodiment, when pumping water from a well, in order to prevent the water level in the well from dropping rapidly below the submersible pump due to excessive pumping and limited formation water output, thus burning out the submersible pump, the pumping rate of the submersible pump is controlled.

[0070] Optionally, controlling the submersible pump in the pumping well to start and determining the pumping rate of the submersible pump may include:

[0071] Turn on the submersible pump in the pumping well and gradually increase the pumping volume from zero to the pumping head of the submersible pump. After maintaining the current pumping head and pumping for a preset time, record the pumping volume.

[0072] Optionally, when controlling the pumping volume to gradually increase from zero to the pumping head of the submersible pump, the increase can be linear or non-linear. The non-linear increase method can be based on different pumping heads, for example, by setting different speed settings on the submersible pump, with different output power and pumping volumes for each speed setting.

[0073] In this embodiment, in order to obtain an accurate pumping volume, the pumping volume needs to be counted after the pumping has stabilized for a period of time.

[0074] Step 102: Control the injection pumps in different injection wells to start simultaneously, and control the water flow rate in each injection well to slowly rise to the preset flow rate. When the water level in multiple observation wells stabilizes, record the water level values ​​of multiple observation wells when different injection wells are started simultaneously.

[0075] The water pumped from the pumping well needs to be injected into the injection well so that the water level rise can be observed from the observation well.

[0076] In this embodiment, the number of water injection wells that can be opened simultaneously can be three, four, or five. The number of water injection wells is not limited in this embodiment and can be set according to needs or experience. Figure 2 The system is equipped with four water injection wells. In this embodiment, the method of recording water level values ​​is explained using four water injection wells as an example.

[0077] In one embodiment, see Figure 4 As shown, when the injection pumps in different injection wells are turned on simultaneously and the injection flow rate in each well is slowly increased to a preset flow rate, the water levels in multiple observation wells are recorded after the water levels in multiple observation wells stabilize. This can include:

[0078] Combine any two injection wells to obtain all possible combinations of injection wells;

[0079] Check whether all injection well combinations have been tested;

[0080] If there are still injection well combinations that have not been tested, then the untested injection well combination is determined as the current injection well combination;

[0081] Simultaneously start the injection pumps in the current water injection combination, and control the water injection flow rate in the two injection wells to slowly rise to the first preset flow rate and keep the flow rate constant. After the water level of multiple observation wells stabilizes, record the water level values ​​of multiple observation wells.

[0082] The injection pumps in the remaining injection wells are turned on one by one in sequence, and the combination of injection wells that are currently turned on at the same time has not been turned on at the same time. This continues until all the injection pumps in the injection wells are turned on. The injection flow rate in the currently turned-on injection well is slowly increased to the second preset flow rate and then kept constant. When the water level in multiple observation wells is stable, the water level values ​​of multiple observation wells when different injection wells are turned on are recorded.

[0083] Proceed to the step "Check if all injection well combinations have been tested";

[0084] Once all injection well combinations have been tested, the process ends.

[0085] In this embodiment, two injection wells are opened simultaneously, and then injection wells are added one by one to form different combinations of injection wells. The water level changes of the observation wells corresponding to the combinations are recorded.

[0086] The combination of two injection wells can include injection wells Z1 and Z2, Z1 and Z3, Z1 and Z4, Z2 and Z3, Z2 and Z4, and Z3 and Z4.

[0087] Taking injection wells Z1 and Z2 as examples, after recording the water level values ​​of multiple observation wells when Z1 and Z2 are simultaneously open, injection well Z3 is opened, and the water level values ​​of multiple observation wells are recorded when all three injection wells are simultaneously open. Then, injection well Z4 is opened, and the water level values ​​of multiple observation wells are recorded when all four injection wells are simultaneously open. Then, combinations of two other injection wells are selected to continue the test.

[0088] It should be noted that in this embodiment, the opening order of the injection wells is not considered; only the simultaneous opening of injection wells is taken into account. Therefore, if the water level values ​​of the corresponding observation wells are obtained after multiple injection wells are opened simultaneously in one cycle, the water level values ​​of the observation wells corresponding to the simultaneous opening of the same multiple injection wells will not be tested again in the next cycle. For example, in the cyclic test corresponding to the combination of injection wells Z1 and Z2, if the water level values ​​of the observation wells corresponding to the simultaneous opening of three injection wells Z1, Z2, and Z3 are tested, then in the cyclic test corresponding to the combination of injection wells Z2 and Z3, the water level values ​​of the observation wells corresponding to the simultaneous opening of three injection wells Z1, Z2, and Z3 will not be retested.

[0089] In one embodiment, determining an untested injection well combination as the current injection well combination includes:

[0090] The injection well combination with the largest distance among all untested injection well combinations is identified as the current injection well combination.

[0091] by Figure 2 For example, the order of the water injection well combination can be water injection wells Z1 and Z4, Z2 and Z4, Z3 and Z4, Z1 and Z3, Z2 and Z3, Z1 and Z2.

[0092]

[0093] The pumping volume is indicated by n, which represents the number of injection wells that are opened simultaneously.

[0094] Also includes:

[0095] Once the water levels in multiple observation wells have stabilized, record the average distance between the currently activated injection wells.

[0096] The following is a specific embodiment for illustration.

[0097] Simultaneously open injection wells Z1 and Z4, and slowly increase the injection flow rate of each well from 0 to Q / 2. Stabilize for a period of time until the water level of the surrounding observation wells remains unchanged. Record the stable water level of each observation well and determine the water level value under the scenario of a 100m spacing between injection wells.

[0098] With the pumping rate of the pumping hole remaining constant, the Z3 injection well is opened, and the flow rates of Z1 and Z4 are reduced to Q / 3. The injection flow rate of Z3 is also Q / 3. The water level is stabilized for a period of time until the water level of the surrounding observation wells remains constant. The stable water level value of each observation well is determined under the scenario of a 50m injection well spacing.

[0099] Continue to shorten the spacing between injection wells, open all injection wells Z1, Z2, Z3, and Z4, inject water at a rate of Q / 4, stabilize for a period of time until the water level of the surrounding observation wells remains unchanged, and record the stable water level of each observation well under the scenario of an average injection well spacing of 25m.

[0100] Turn on Z2 and Z4, inject water at a rate of Q / 2, and stabilize for a period of time until the water level in the surrounding observation wells remains unchanged. Record the stable water level values ​​of each observation well under the scenario of an 80m water injection well spacing.

[0101] This process continues until all different combinations of injection wells have been tested.

[0102] Step 103: Determine the maximum water level value among multiple water level values ​​as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the maximum water level value are the optimal water injection scheme.

[0103] Optionally, it may also include: determining the average distance between the simultaneously opened injection wells corresponding to the maximum water level as the optimal injection distance.

[0104] In one embodiment, the water level values ​​of multiple observation wells and the average distance between the water injection wells corresponding to the simultaneous opening of different injection wells have been determined in the above steps. Based on the water level value, i.e. the water level rise effect of the observation wells, the scheme with the largest rise in water level of the observation wells is taken as the optimal water injection scheme, that is, the water injection wells opened at the same time corresponding to the maximum water level value are the optimal water injection scheme.

[0105] In one embodiment, in order to reduce costs, i.e., the fewer injection wells opened, the lower the cost, the optimal water injection scheme is determined from the combinations of injection wells opened simultaneously corresponding to the maximum water level value, which has the fewest number of injection wells.

[0106] This invention, through its embodiments, controls the activation of submersible pumps in pumping wells to determine the pumping volume; simultaneously controls the activation of injection pumps in different injection wells, and controls the injection flow rate in each injection well to slowly rise to a preset flow rate. Once the water levels in multiple observation wells stabilize, the water level values ​​of multiple observation wells are recorded when different injection wells are activated simultaneously. The maximum water level value among the multiple water level values ​​is determined as the optimal injection volume, and the injection wells activated simultaneously corresponding to the maximum water level value are the optimal injection scheme. This ensures the water level required for uranium mining during coal mining and guides the coordinated mining of uranium and coal resources.

[0107] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0108] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.

[0109] Figure 5 The diagram shows a schematic of the groundwater level control test device for coordinated uranium-coal mining in an uranium-producing area according to an embodiment of the present invention. For ease of explanation, only the parts relevant to the embodiment of the present invention are shown, and are described in detail below:

[0110] like Figure 5 As shown, the groundwater level control test device 5 in the uranium mining area of ​​the uranium-coal coordinated mining includes: a pumping well, multiple injection wells and multiple observation wells set at a preset location in the uranium mining area; the groundwater level control test device 5 in the uranium mining area of ​​the uranium-coal coordinated mining includes: a control module 51 and a determination module 52.

[0111] The control module 51 is used to control the submersible pump in the pumping well to start and determine the pumping volume of the submersible pump.

[0112] The control module 51 is also used to control the simultaneous opening of the injection pumps in different injection wells, and to control the water flow rate in each injection well to slowly rise to the preset flow rate. When the water level of multiple observation wells stabilizes, the control module 51 records the water level values ​​of multiple observation wells when different injection wells are opened at the same time.

[0113] The determination module 52 is used to determine the largest water level value among multiple water level values ​​as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the largest water level value are the optimal water injection scheme.

[0114] In one possible implementation, the pumping well is located in an area outside the ground immersion well site where the water level is lower than a preset water level, and a submersible pump is installed inside the pumping well.

[0115] Multiple water injection wells are set between the pumping wells and the uranium mining area, and the line connecting the pumping wells and the uranium mining area is perpendicular to the line connecting the multiple water injection wells. Each water injection well is equipped with a closed injection pump at its surface wellhead.

[0116] Multiple observation wells are located between the water injection wells and the uranium mining area.

[0117] In one possible implementation, the distance between multiple injection wells is set with unequal spacing.

[0118] In one possible implementation, the diameter of the well opening is 110 mm, the diameter of the final well is 426 mm, the diameter of the seamless steel pipe inside is 273 mm, and the pipe wall thickness is 9 mm.

[0119] Each injection well has an opening diameter of 110mm, a final hole diameter of 245mm, and an internal seamless steel pipe with a diameter of 133mm and a wall thickness of 9mm.

[0120] In one possible implementation, the pumping well and multiple injection wells are gravel-filled filter wells, with the entire mineralized aquifer acting as a filter within the pumping well and multiple injection wells.

[0121] In one possible implementation, control module 51 controls the submersible pump in the pumping well to start, and when determining the pumping rate of the submersible pump, it is used for:

[0122] The submersible pump in the pumping well is turned on, and the pumping volume is gradually increased from zero to the pumping head of the submersible pump. After the pumping volume stabilizes at the pumping head for a preset time, the pumping volume is recorded.

[0123] In one possible implementation, the control module 51 controls the simultaneous activation of injection pumps in different injection wells and controls the injection flow rate in each injection well to slowly rise to a preset flow rate. When the water levels in multiple observation wells stabilize, the module records the water level values ​​of the multiple observation wells when the different injection wells are activated simultaneously. This is used for:

[0124] Combine any two injection wells to obtain all possible combinations of injection wells;

[0125] Check whether all injection well combinations have been tested;

[0126] If there are still injection well combinations that have not been tested, then the untested injection well combination is determined as the current injection well combination;

[0127] Simultaneously start the injection pumps in the current water injection combination, and control the water injection flow rate in the two injection wells to slowly rise to the first preset flow rate and keep the flow rate constant. After the water level of multiple observation wells stabilizes, record the water level values ​​of multiple observation wells.

[0128] The injection pumps in the remaining injection wells are turned on one by one in sequence, and the combination of injection wells that are currently turned on at the same time has not been turned on at the same time. This continues until all the injection pumps in the injection wells are turned on. The injection flow rate in the currently turned-on injection well is slowly increased to the second preset flow rate and then kept constant. When the water level in multiple observation wells is stable, the water level values ​​of multiple observation wells when different injection wells are turned on are recorded.

[0129] Proceed to the step "Check if all injection well combinations have been tested";

[0130] Once all injection well combinations have been tested, the process ends.

[0131] In one possible implementation, when control module 51 determines that an untested injection well combination is the current injection well combination, it is used to:

[0132] The injection well combination with the largest distance among all untested injection well combinations is identified as the current injection well combination.

[0133] The second preset flow rate is based on Determine, where V represents the preset flow rate, Q represents the pumping volume, and n represents the number of injection wells opened simultaneously.

[0134] In one possible implementation, the determining module 52 is further used for:

[0135] Once the water levels in multiple observation wells have stabilized, record the average distance between the currently open injection wells.

[0136] The average distance between the injection wells that are opened simultaneously corresponding to the maximum water level is determined as the optimal injection distance;

[0137] When module 52 determines that the optimal water injection scheme is the simultaneous activation of the injection wells corresponding to the maximum water level, it is used for:

[0138] The optimal water injection scheme is the combination of injection wells that are opened simultaneously at the maximum water level, with the fewest number of injection wells.

[0139] The aforementioned groundwater level control test device for uranium mining areas in coordinated uranium-coal mining uses a control module to control the activation of submersible pumps in pumping wells, determine the pumping volume of the submersible pumps, and simultaneously activate injection pumps in different injection wells. It also controls the injection flow rate in each injection well to slowly rise to a preset flow rate. Once the water levels in multiple observation wells stabilize, the device records the water level values ​​of multiple observation wells when they are activated simultaneously. The determination module identifies the maximum water level value as the optimal injection volume, and the injection wells activated simultaneously corresponding to the maximum water level value as the optimal injection scheme. This ensures the water level required for uranium mining during coal mining and guides the coordinated mining of uranium-coal resources.

[0140] Figure 6 This is a schematic diagram of a terminal provided in an embodiment of the present invention. Figure 6 As shown, the terminal 6 in this embodiment includes: a processor 60, a memory 61, and a computer program 62 stored in the memory 61 and executable on the processor 60. When the processor 60 executes the computer program 62, it implements the steps in the above-described embodiments of the experimental methods for groundwater level control in various uranium-coal coordinated mining uranium ore areas, for example... Figure 1 Steps 101 to 103 are shown. Alternatively, when the processor 60 executes the computer program 62, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 5 The functions of each module / unit are shown.

[0141] For example, the computer program 62 can be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 62 in the terminal 6. For example, the computer program 62 can be divided into... Figure 5 The modules / units shown are shown.

[0142] The terminal 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of terminal 6 and does not constitute a limitation on terminal 6. It may include more or fewer components than shown, or combine certain components, or different components. For example, the terminal may also include input / output devices, network access devices, buses, etc.

[0143] The processor 60 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0144] The memory 61 can be an internal storage unit of the terminal 6, such as a hard disk or memory of the terminal 6. The memory 61 can also be an external storage device of the terminal 6, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the terminal 6. Furthermore, the memory 61 can include both internal storage units and external storage devices of the terminal 6. The memory 61 is used to store the computer program and other programs and data required by the terminal. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0145] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0146] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0147] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0148] In the embodiments provided by this invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0149] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0150] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0151] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of the above embodiments of the groundwater level control test method for coordinated uranium-coal mining uranium ore areas. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0152] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A test method for groundwater level control in a uranium mining area for coordinated uranium and coal mining, characterized in that, At a predetermined location in the uranium mining area, pumping wells, multiple injection wells, and multiple observation wells are set up. The pumping wells are located in areas where the water level outside the leaching well site is lower than the predetermined water level, and submersible pumps are installed inside the pumping wells. The multiple injection wells are located between the pumping wells and the uranium mining area, and the line connecting the pumping wells and the uranium mining area is perpendicular to the line connecting the multiple injection wells. A closed injection pump is installed at the surface wellhead of each injection well. The plurality of observation wells are located between the water injection well and the uranium mining area; The groundwater level control experiment in the uranium mining area for coordinated uranium and coal mining included: Control the submersible pump in the pumping well to start, and determine the pumping capacity of the submersible pump; Simultaneously activating the injection pumps in different injection wells and slowly increasing the injection flow rate in each well to a preset flow rate, once the water levels in the multiple observation wells stabilize, recording the water level values ​​of the multiple observation wells when the different injection wells are activated simultaneously; including: Combine any two injection wells to obtain all possible combinations of injection wells; Check whether all injection well combinations have been tested; If there are still injection well combinations that have not been tested, then the untested injection well combination is determined as the current injection well combination; Simultaneously start the injection pumps in the current water injection well combination, and control the water injection flow rate in the two water injection wells to slowly rise to the first preset flow rate and keep the flow rate constant. After the water level of the multiple observation wells stabilizes, record the water level values ​​of the multiple observation wells. The injection pumps in the remaining injection wells are turned on one by one in sequence, and the combination of injection wells that are currently turned on at the same time has never been turned on at the same time, until all the injection pumps in the injection wells are turned on. The injection flow rate in the currently turned-on injection well is controlled to slowly rise to the second preset flow rate and then keep the flow rate constant. When the water level of the multiple observation wells is stable, the water level values ​​of the multiple observation wells when different injection wells are turned on are recorded. Jump to the step of checking whether all water injection well combinations have been tested; Once all injection well combinations have been tested, the process ends. The maximum water level value among the multiple water level values ​​is determined as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the maximum water level value are the optimal water injection scheme.

2. The method for groundwater level control in uranium mining areas with coordinated uranium and coal mining according to claim 1, characterized in that, The distances between the multiple water injection wells are set at unequal intervals.

3. The experimental method for groundwater level control in uranium mining areas with coordinated uranium and coal mining according to claim 1, characterized in that, The well has an opening diameter of 110mm, a final hole diameter of 426mm, and an internal seamless steel pipe with a diameter of 273mm and a wall thickness of 9mm. Each injection well has an opening diameter of 110mm, a final hole diameter of 245mm, and an internal seamless steel pipe with a diameter of 133mm and a wall thickness of 9mm.

4. The experimental method for groundwater level control in uranium mining areas with coordinated uranium and coal mining according to claim 1, characterized in that, The pumping well and the plurality of injection wells are gravel-filled filter wells, which serve as filters for the entire mineral-bearing aquifer.

5. The test method for groundwater level control in uranium mining areas where uranium and coal are co-mined according to any one of claims 1-4, characterized in that, The process of controlling the activation of the submersible pump in the pumping well and determining the pumping rate of the submersible pump includes: The submersible pump in the pumping well is turned on, and the pumping volume is gradually increased from zero to the pumping head of the submersible pump. After the pumping volume stabilizes at the pumping head of the submersible pump for a preset time, the pumping volume is recorded.

6. The method for groundwater level control in uranium mining areas with coordinated uranium and coal mining according to claim 5, characterized in that, Identifying an untested injection well combination as the current injection well combination includes: The injection well combination with the largest distance among all untested injection well combinations is identified as the current injection well combination. The second preset flow rate is based on Confirmed, among which Indicates the preset traffic volume. Indicates the pumping volume. This indicates the number of water injection wells that are activated simultaneously.

7. The method for groundwater level control in uranium mining areas with coordinated uranium and coal mining according to claim 5, characterized in that, Also includes: Once the water levels in the multiple observation wells have stabilized, record the average distance between the currently simultaneously opened injection wells. The average distance between the injection wells that are opened simultaneously corresponding to the maximum water level is determined as the optimal injection distance; The optimal water injection plan is determined by identifying the number of injection wells that should be opened simultaneously corresponding to the maximum water level, including: The optimal water injection scheme is the combination of injection wells that are opened simultaneously at the maximum water level, with the fewest number of injection wells.

8. A test device for groundwater level control in a uranium mining area for coordinated uranium and coal mining, characterized in that, At a predetermined location in the uranium mining area, pumping wells, multiple injection wells, and multiple observation wells are set up. The pumping wells are located in areas where the water level outside the leaching well site is lower than the predetermined water level, and submersible pumps are installed inside the pumping wells. The multiple injection wells are located between the pumping wells and the uranium mining area, and the line connecting the pumping wells and the uranium mining area is perpendicular to the line connecting the multiple injection wells. A closed injection pump is installed at the surface wellhead of each injection well. The plurality of observation wells are located between the water injection well and the uranium mining area; The groundwater level control test device in the uranium mining area for coordinated uranium and coal mining includes: The control module is used to control the operation of the submersible pump in the pumping well and to determine the pumping volume of the submersible pump. The control module is also used to control the simultaneous opening of the injection pumps in different injection wells, and to control the water flow rate in each injection well to slowly rise to the preset flow rate. When the water level of the multiple observation wells stabilizes, the module records the water level value of the multiple observation wells when the different injection wells are opened at the same time. The control module is also used to combine any two injection wells into a single unit to obtain all possible combinations of injection wells. Check whether all injection well combinations have been tested; If there are still injection well combinations that have not been tested, then the untested injection well combination is determined as the current injection well combination; Simultaneously start the injection pumps in the current water injection well combination, and control the water injection flow rate in the two water injection wells to slowly rise to the first preset flow rate and keep the flow rate constant. After the water level of the multiple observation wells stabilizes, record the water level values ​​of the multiple observation wells. The injection pumps in the remaining injection wells are turned on one by one in sequence, and the combination of injection wells that are currently turned on at the same time has never been turned on at the same time, until all the injection pumps in the injection wells are turned on. The injection flow rate in the currently turned-on injection well is controlled to slowly rise to the second preset flow rate and then keep the flow rate constant. When the water level of the multiple observation wells is stable, the water level values ​​of the multiple observation wells when different injection wells are turned on are recorded. Jump to the step of checking whether all water injection well combinations have been tested; Once all injection well combinations have been tested, the process ends. The determination module is used to determine the largest water level value among multiple water level values ​​as the optimal water injection volume, and the water injection wells opened simultaneously corresponding to the largest water level value are the optimal water injection scheme.

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