Method, device and electronic equipment for determining water output of riverside radiation well

Abstract

This application relates to a method, device, and electronic equipment for determining the water yield of a riverside radial well, belonging to the field of radial well technology. The method includes obtaining structural parameter data of a target riverside radial well and geological data of the region in which it is located; determining the equivalent permeability coefficient in the vertical layer direction of the region based on the formation permeability information in the geological data using a vertical weighting method; and determining the equivalent radius of the target riverside radial well based on the radial well radius information and radial tube length information in the structural parameter data; and calculating the water yield of the target riverside radial well based on a preset expression based on the Qiu Buyi hypothesis and derived by potential function superposition. For riverside radial wells where the radial tube is a certain distance from the riverbed, the technical solution of this application is more consistent with actual conditions and can effectively meet the application needs of actual engineering projects.

Description

Technical Field

[0001] The present application belongs to the technical field of radial wells, and specifically relates to a method, device, and electronic equipment for determining the water output of a riverside radial well. Background Art

[0002] A radial well consists of a large-diameter vertical water collection shaft with multiple layers of horizontal radial pipes driven horizontally into the aquifer at different elevations within the shaft. The vertical shaft depth typically does not exceed 50 meters, with a pipe diameter of 3 to 5 meters. The horizontal radial pipes are typically 10 to 100 meters long and 60 to 300 mm in diameter. Radial wells are commonly used for riverside water extraction and are suitable for sand and gravel, coarse sand, medium sand, fine sand, and silt-fine sand formations. During the design and construction of radial wells and their application in related water supply projects, the water yield of the radial well must be assessed and determined.

[0003] In related technologies, the water yield of riverside radial wells is generally determined using the calculation methods described in the "Handbook of Machine Well Technology" (China Water Resources and Hydropower Press, 1995) and the "Handbook of Water Supply Hydrogeology (Volume 2)" (Geological Press, 1977). The only existing method for calculating water yield is the one where the radial tubes are located below the riverbed. Typically, the water yield is linearly related to the number of radial tubes.

[0004] However, in actual engineering, the radiation pipes of some radiation wells are a certain distance away from the riverbed, and the results obtained by using the existing water output determination method are quite different from the actual water output situation. Summary of the Invention

[0005] In order to at least to some extent overcome the problems existing in the related art, the present application provides a method, device and electronic equipment for determining the water output of a riverside radiation well, so as to solve the technical problem of how to effectively evaluate and determine the water output of a riverside radiation well whose radiation tubes are a certain distance away from the riverbed.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] Firstly,

[0008] The present application provides a method for determining the water yield of a riverside radiation well, the method comprising:

[0009] Obtain the structural parameter data of the target riverside radiation well and the geological data of the area where it is located;

[0010] Based on the formation permeability information in the geological data, an equivalent permeability coefficient in a vertical layer direction of the region is determined using a vertical weighting method, and based on the radiation well radius information and radiation tube length information in the structural parameter data, an equivalent radius of the target riverside radiation well is determined;

[0011] According to the equivalent permeability coefficient and the equivalent radius, the water yield of the target riverside radiation well is calculated and determined based on a preset expression, wherein the preset expression is based on the Qiu Buyi hypothesis and is derived by using potential function superposition.

[0012] Optionally, the water yield Q of the target riverside radiation well is calculated and determined based on the following expression:

[0013]

[0014] Among them, K v represents the equivalent permeability coefficient, r f represents the equivalent radius of the target riverside radiation well, H represents the thickness of the aquifer, h represents the hydraulic head height in the well, a represents the distance from the well to the recharge boundary, and C represents the water yield reduction coefficient.

[0015] Optionally, the water output reduction coefficient C is calculated and determined based on the following expression:

[0016]

[0017] Among them, L h Indicates the distance between the lowest radiation tube and the water level in the well.

[0018] Optionally, the equivalent permeability coefficient K is determined based on the following expression: v ,

[0019]

[0020] Among them, M i represents the thickness of the i-th layer, K i represents the permeability coefficient of the i-th layer, and m represents the number of layers.

[0021] Optionally, the horizontal radiation tubes of the target riverside radiation well are of equal length; the equivalent radius r of the target riverside radiation well is determined based on the following expression: f ,

[0022] r f =0.25 1 / n L f +r0

[0023] Among them, L f Represents the length of a single horizontal radiation tube, r0 represents the radius of the radiation shaft, and n represents the number of horizontal radiation tubes.

[0024] Secondly,

[0025] The present application provides a device for determining the water yield of a riverside radiation well, the device comprising:

[0026] An acquisition module is used to obtain the structural parameter data of the target riverside radiation well and the geological data of the area where it is located;

[0027] a first processing module configured to determine an equivalent permeability coefficient in a vertical layer direction of a region based on formation permeability information in the geological data using a vertical weighting method, and to determine an equivalent radius of the target riverside radial well based on radial well radius information and radial tube length information in the structural parameter data;

[0028] The second processing module is used to calculate and determine the water yield of the target riverside radiation well based on the equivalent permeability coefficient and the equivalent radius based on a preset expression, wherein the preset expression is based on the Qiu Buyi hypothesis and is derived by potential function superposition.

[0029] Thirdly,

[0030] The present application provides an electronic device, including:

[0031] a memory having an executable program stored therein;

[0032] A processor is used to execute the executable program in the memory to implement the steps of the above method.

[0033] This application adopts the above technical solution, which has at least the following beneficial effects:

[0034] In the technical solution of the present application, the method for determining the water yield of a riverside radiation well includes: obtaining structural parameter data of the target riverside radiation well and geological data of the area in which it is located; determining the equivalent permeability coefficient in the vertical layer direction of the region using a vertical weighting method based on the formation permeability information in the geological data, and determining the equivalent radius of the target riverside radiation well based on the radiation well radius information and radiation tube length information in the structural parameter data; and calculating and determining the water yield of the target riverside radiation well based on a preset expression based on the equivalent permeability coefficient and equivalent radius, wherein the preset expression is derived based on the Qiu Buyi hypothesis using potential function superposition. For riverside radiation wells where the radiation tube is a certain distance from the riverbed, the water yield determination method of the present application is used. It has been verified in practice that the estimated water yield determined by the method is more consistent with the actual situation than existing methods, and can effectively meet the application needs in actual engineering.

[0035] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the technical solution of this application or the prior art and constitute a part of the specification. Among them, the drawings that express the embodiments of this application are used together with the embodiments of this application to explain the technical solution of this application, but do not constitute a limitation of the technical solution of this application.

[0037] Figure 1 A flow chart of a method for determining the water yield of a riverside radiation well provided in one embodiment of the present application;

[0038] Figure 2 A schematic diagram illustrating the meanings of symbols in expressions in a method for determining the water yield of a riverside radiation well provided in one embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of an apparatus for determining the water yield of a riverside radiation well provided in one embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be described in detail below. Obviously, the embodiments described are only some of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0042] As described in the background technology, in the related art, the water output of riverside radial wells is generally determined by the calculation methods described in the "Handbook of Machine Well Technology" (China Water Resources and Hydropower Press, 1995) and the "Handbook of Water Supply Hydrogeology (Volume 2)" (Geological Press, 1977). The existing water output calculation method only uses the calculation method where the radial tubes are located under the riverbed, and the water output is usually linearly related to the number of radial tubes.

[0043] However, in actual engineering, the radiation pipes of some radiation wells are a certain distance away from the riverbed, and the results obtained by using the existing water output determination method are quite different from the actual water output situation.

[0044] To address this, this application proposes a method for determining the water yield of a riverside radiation well, such as Figure 1 As shown, in one embodiment, the method for determining the water yield of a riverside radiation well proposed in this application includes:

[0045] Step S110: Acquire structural parameter data of the target riverside radial well and geological data of the area where the target well is located. As will be readily understood, the structural parameter data herein refers to the structural design parameters of the radial well, which can be obtained through actual measurement or from a design department. The geological data is generally obtained through geological survey of the area where the target well is located.

[0046] After step S110, step S120 is performed to determine the equivalent permeability coefficient in the vertical layer direction of the region using a vertical weighting method based on the formation permeability information in the geological data, and to determine the equivalent radius of the target riverside radial well based on the radial well radius information and radial tube length information in the structural parameter data;

[0047] Then proceed to step S130, and determine the water yield of the target riverside radiation well based on the equivalent permeability coefficient and equivalent radius obtained in step S120 based on the preset expression. It should be noted that the preset expression here is based on the Qiu Buyi hypothesis and is derived by potential function superposition.

[0048] The Jourbouy hypothesis (also called the "Jourbouy hypothesis" in some translations) is a generalized assumption for phreatic flow calculations. In 1863, Frenchman Jean-Jacques Jourbouy proposed that phreatic flow under slowly varying flow conditions should be calculated by ignoring the vertical component of groundwater velocity, thus generalizing Darcy's law to solve practical problems.

[0049] This application is based on this theoretical foundation and on the equivalent analysis of riverside radial wells where the radial tubes are a certain distance away from the riverbed. By using potential function superposition deduction, it is found that unlike the situation in the prior art where the water output is linearly related to the number of radial tubes, the inverse of the number of radial tubes in the derivation result is exponentially related to the equivalent radius of the radial well. This results in an expression that can be used to calculate and evaluate the actual water output.

[0050] Specifically, an available preset expression is shown in the following expression (1):

[0051]

[0052] In expression (1), Q represents the water output (in cubic meters per day, m 3 / d), Kv represents the equivalent permeability coefficient (unit: m / d), r f represents the equivalent radius of the target riverside radiation well (unit: m), C represents the water yield reduction coefficient, H represents the thickness of the aquifer (unit: m), h represents the water head height in the well (unit: m), and a represents the distance from the well to the recharge boundary (unit: m). The actual meanings of the parameters H, h, and a are as follows: Figure 2 As shown in the relevant figure legend.

[0053] In addition, it should be noted that the water yield reduction coefficient C in expression (1) is used to distinguish between two types of wells: complete wells and incomplete wells. A complete well is a well that is drilled into an impermeable layer, in which case C is 1; an incomplete well is a well that is not drilled into an impermeable layer (e.g. Figure 2 The well type shown is an incomplete well), and C is needed to reduce the water output.

[0054] Specifically, the water reduction coefficient C can be determined based on the following expression (2):

[0055]

[0056] In expression (2), L h It indicates the distance between the lowest radiation tube and the water level in the well (unit: m). Its actual meaning is as follows: Figure 2 As shown in the relevant figure legend.

[0057] As mentioned above, the technical solution of this application also involves the determination of the equivalent permeability coefficient in the vertical layer direction (or referred to as the vertical permeability coefficient) and the equivalent radius, which are explained below:

[0058] In a specific embodiment, the equivalent permeability coefficient K is determined based on the following expression (3): v ,

[0059]

[0060] In expression (3), Mi represents the thickness of the i-th layer (unit: m / d), Ki represents the permeability coefficient of the i-th layer (unit: m / d), and m represents the number of layers. The relevant legend is as follows: Figure 2 shown.

[0061] Generally speaking, the radiation tubes of the radiation wells are of equal or approximately equal length. Based on this, in a specific embodiment, the equivalent radius r of the target riverside radiation well can be determined based on the following expression (4): f ,

[0062] r f =0.25 1 / n L f +r0 (4)

[0063] In expression (4), L f Represents the length of a single horizontal radiation tube (unit: m), r0 represents the radius of the radiation shaft (unit: m), and n represents the number of horizontal radiation tubes. The relevant legend is as follows: Figure 2 shown.

[0064] In addition, it should be noted that, based on the theoretical derivation constraints of the technical solution of this application, expressions (1) to (4) in the technical solution of this application are subject to the following application scenario limitations in application, that is, in actual application scenarios, the structural parameters and site conditions need to meet the following requirements:

[0065] (1) The recharge boundary is approximately a straight line;

[0066] (2) semi-infinite water supply boundary;

[0067] (3) The flow regime in the aquifer is laminar;

[0068] (4) The aquifer is homogeneous, of equal thickness, and horizontal;

[0069] (5) The permeability coefficient of a heterogeneous aquifer is the equivalent permeability coefficient of the water flow perpendicular to the formation;

[0070] (6)a≤(R f +r f ) / 2, s≤0.5H, such as Figure 2 As shown, s represents the water level drop (unit: m).

[0071] The method proposed in this application for determining the water yield of riverside radial wells was used to estimate the water yield of radial wells during their design and construction, and a relatively satisfactory result was obtained. Compared with existing methods, the method is more consistent with the actual situation and can effectively meet the application needs of actual projects.

[0072] Specifically, the relevant engineering construction projects include the construction of 7 radiation wells on the Yellow River beach (north bank) in Zhongning County, Ningxia from 2013 to 2017; the construction of 2 radiation wells on the Yellow River beach (south bank) in Shapotou District, Zhongwei City, Ningxia from 2018 to 2020; the construction of 1 radiation well on the Toshgan River beach in Aheqi County, Xinjiang in 2021; and the construction of 15 radiation wells on the Yellow River (south bank) in Zhongwei City, Ningxia from 2020 to 2022.

[0073] Figure 3 A schematic diagram of the structure of a device for determining the water output of a riverside radiation well provided in one embodiment of the present application is shown as follows: Figure 3 As shown, the device 300 for determining the water yield of a riverside radiation well includes:

[0074] Acquisition module 301 is used to obtain structural parameter data of the target riverside radiation well and geological data of the area where it is located;

[0075] The first processing module 302 is configured to determine the equivalent permeability coefficient of the vertical layer of the region using a vertical weighting method based on the formation permeability information in the geological data, and to determine the equivalent radius of the target riverside radial well based on the radial well radius information and radial tube length information in the structural parameter data;

[0076] The second processing module 303 is used to calculate and determine the water yield of the target riverside radiation well based on the equivalent permeability coefficient and the equivalent radius based on a preset expression, wherein the preset expression is based on the Qiu Buyi hypothesis and is derived by potential function superposition.

[0077] Regarding the device 300 for determining the water yield of a riverside radiation well in the above-mentioned related embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method and will not be elaborated here.

[0078] Figure 4 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application is shown in FIG. Figure 4 As shown, the electronic device 400 includes:

[0079] Memory 401, on which executable programs are stored;

[0080] The processor 402 is configured to execute the executable program in the memory 401 to implement the steps of the above method.

[0081] Regarding the electronic device 400 in the above embodiment, the specific manner in which its processor 402 executes the program in the memory 401 has been described in detail in the embodiment of the method, and will not be elaborated here.

[0082] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by anyone skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for determining the water yield of a riverside radiation well, characterized in that: include: Obtain the structural parameter data of the target riverside radiation well and the geological data of the area where it is located; Based on the formation permeability information in the geological data, an equivalent permeability coefficient in a vertical layer direction of the region is determined using a vertical weighting method, and based on the radiation well radius information and radiation tube length information in the structural parameter data, an equivalent radius of the target riverside radiation well is determined; According to the equivalent permeability coefficient and the equivalent radius, the water yield of the target riverside radiation well is calculated and determined based on a preset expression, wherein the preset expression is derived based on the Qiu Buyi hypothesis by using potential function superposition; Based on the following expression, the water yield of the target riverside radiation well is calculated and determined: , in, represents the equivalent permeability coefficient, represents the equivalent radius of the target riverside radiation well, represents the thickness of the aquifer, Indicates the water head height in the well. represents the distance from the well to the recharge boundary, Indicates the water output reduction coefficient.

2. The method according to claim 1, characterized in that Based on the following expression, the water output reduction coefficient is calculated and determined: , in, Indicates the distance between the lowest radiation tube and the water level in the well.

3. The method according to claim 2, characterized in that The equivalent permeability coefficient is determined based on the following expression: , in, represents the thickness of the i-th layer, represents the permeability coefficient of the i-th formation, Indicates the number of strata.

4. The method according to claim 1, wherein The horizontal radiation tubes of the target riverside radiation well are of equal length; The equivalent radius of the target riverside radiation well is determined based on the following expression: , in, Indicates the length of a single horizontal radiant tube, represents the radius of the radial shaft, Indicates the number of horizontal radiation tubes.

5. A device for determining the water yield of a riverside radiation well, characterized in that: include: An acquisition module is used to obtain the structural parameter data of the target riverside radiation well and the geological data of the area where it is located; a first processing module configured to determine an equivalent permeability coefficient in a vertical layer direction of a region based on formation permeability information in the geological data using a vertical weighting method, and to determine an equivalent radius of the target riverside radial well based on radial well radius information and radial tube length information in the structural parameter data; A second processing module is configured to calculate and determine the water yield of the target riverside radiation well based on the equivalent permeability coefficient and the equivalent radius according to a preset expression, wherein the preset expression is derived based on the Qiu Buyi hypothesis by using potential function superposition; Based on the following expression, the water yield of the target riverside radiation well is calculated and determined: , in, represents the equivalent permeability in the vertical layer direction, represents the equivalent radius of the target riverside radiation well, represents the thickness of the aquifer, Indicates the water head height in the well. represents the distance from the well to the recharge boundary, Indicates the water output reduction coefficient.

6. The device according to claim 5, characterized in that Based on the following expression, the water output reduction coefficient is calculated and determined: , in, Indicates the distance between the lowest radiation tube and the water level in the well.

7. The device according to claim 6, characterized in that The equivalent permeability coefficient is determined based on the following expression: , in, represents the thickness of the i-th layer, represents the permeability coefficient of the i-th formation, Indicates the number of strata; The equivalent radius of the target riverside radiation well is determined based on the following expression: , in, Indicates the length of a single horizontal radiant tube, represents the radius of the radial shaft, Indicates the number of horizontal radiation tubes.

8. An electronic device, characterized in that: include: a memory having an executable program stored therein; A processor, configured to execute the executable program in the memory to implement the steps of the method according to any one of claims 1 to 4.

Images