Saline-alkali soil treatment method and system based on water circulation and terminal
By controlling the coordinated use of irrigation devices and pressure devices, the problem of low salt solubility caused by the rapid infiltration rate of concealed pipes was solved, and effective improvement of saline-alkali land was achieved.
Patent Information
- Application Number
- CN202510901128.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2025-10-10
AI Technical Summary
In the prior art, when the buried pipe is shallow or the soil is loose, water seeps into the pipe too quickly, resulting in low solubility of salt in water and poor improvement effect of saline-alkali land.
By controlling the irrigation device to irrigate the treated tail water into the saline-alkali land, it is determined whether the irrigation time meets the infiltration requirements. After the salt is dissolved, the pressure device is used to reduce the pressure to promote the tail water to infiltrate into the concealed pipe, ensuring that the salt is fully dissolved and discharged.
It improves the improvement effect of saline-alkali land, ensures that the salt is fully dissolved and quickly discharged, and improves soil quality.
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Figure CN120753048A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of saline-alkali soil treatment, in particular to a saline-alkali soil treatment method, system and terminal based on water circulation. BACKGROUND
[0002] Saline-alkali soil refers to a type of land where the soil contains excessive soluble salts (such as sodium chloride and sodium sulfate) and alkaline substances (such as sodium carbonate and sodium bicarbonate), resulting in poor soil permeability, poor aeration, and poor growth of most crops.
[0003] In related technologies, in order to simultaneously solve the problems of aquaculture wastewater treatment and saline-alkali soil improvement, the aquaculture tail water is usually pretreated, and then the treated aquaculture tail water is irrigated in the saline-alkali soil, so that the excessive salt in the soil is dissolved and infiltrates into the dark pipe with water, and is discharged through the dark pipe, thereby reducing the salt content of the surface soil.
[0004] In the related technologies described above, when the water containing dissolved salt is discharged from the saline-alkali soil through the dark pipe, the water infiltrates into the dark pipe under the action of gravity. If the dark pipe is buried at a shallow depth or the soil is loose, the water will infiltrate into the dark pipe too quickly, which can easily cause low solubility of salt in water, resulting in poor improvement effect of the saline-alkali soil, and there is still room for improvement. SUMMARY
[0005] In order to ensure good saline-alkali soil improvement effect, the present application provides a saline-alkali soil treatment method, system and terminal based on water circulation.
[0006] In a first aspect, the present application provides a saline-alkali soil treatment method based on water circulation, which adopts the following technical solution:
[0007] The saline-alkali soil treatment method based on water circulation comprises:
[0008] controlling a preset irrigation device to irrigate a preset treated tail water into a preset saline-alkali soil, and obtaining a tail water irrigation time;
[0009] determining whether the tail water irrigation time meets a preset infiltration irrigation time requirement;
[0010] If not, continue to obtain the tail water irrigation time for cyclic determination;
[0011] If yes, control a preset pressure device to increase the pressure of a preset dark pipe to promote the dissolution of salt in the saline-alkali soil into the treated tail water;
[0012] obtain a dissolution completion trigger signal;
[0013] control the pressure device to reduce the pressure of the dark pipe according to the dissolution completion trigger signal to promote the treated tail water to infiltrate into the dark pipe and be discharged.
[0014] By adopting the technical scheme, when the tail water irrigation time meets the requirement of the infiltration irrigation time after the irrigation device irrigates the treated tail water in the saline-alkali soil, the pressure device is controlled to increase the pressure of the buried pipe, so as to drive the treated tail water to stay in the saline-alkali soil to promote the dissolution of the salt, and after the dissolution is completed, the pressure device is controlled to reduce the pressure of the buried pipe, so as to promote the treated tail water to quickly infiltrate into the buried pipe and discharge the saline-alkali soil, so as to take the salt away from the saline-alkali soil, thereby ensuring a good saline-alkali soil improvement effect.
[0015] Optionally, the step of controlling the preset pressure device to increase the pressure of the preset buried pipe to promote the dissolution of the salt in the saline-alkali soil into the treated tail water comprises:
[0016] obtaining a salt dissolution time;
[0017] judging whether the salt dissolution time meets the requirement of the tail water irrigation time;
[0018] if yes, outputting a preset dissolution completion trigger signal;
[0019] if no, analyzing the salt dissolution time and the tail water irrigation time to determine a residual dissolution time;
[0020] obtaining a buried pipe enhanced pressure;
[0021] controlling the pressure device to increase the pressure of the buried pipe according to the buried pipe enhanced pressure and the residual dissolution time to promote the dissolution of the salt in the saline-alkali soil into the treated tail water.
[0022] By adopting the technical scheme, when the salt dissolution time meets the requirement of the tail water irrigation time, it indicates that the salt has been dissolved into the treated tail water in the infiltration process, so the dissolution completion trigger signal is directly outputted, and when the salt dissolution time does not meet the requirement of the tail water irrigation time, the residual dissolution time is determined according to the salt dissolution time and the tail water irrigation time, so the pressure device is controlled to increase the pressure of the buried pipe to the buried pipe enhanced pressure according to the residual dissolution time, thereby promoting the dissolution of the salt, and further ensuring a good saline-alkali soil improvement effect.
[0023] Optionally, the step of obtaining the buried pipe enhanced pressure comprises:
[0024] obtaining a soil hydraulic conductivity coefficient;
[0025] analyzing the soil hydraulic conductivity coefficient and the tail water irrigation time to determine a buried pipe influence radius;
[0026] analyzing the soil hydraulic conductivity coefficient, the buried pipe influence radius, a preset tail water density, a preset buried pipe radius and a preset gravitational acceleration to determine a soil buried pipe constant;
[0027] Analyze the remaining dissolution time and the preset remaining penetration depth to determine the tailwater flow parameters;
[0028] Obtain soil test pressure of saline-alkali land;
[0029] The soil test pressure, tailwater flow parameters and soil blind pipe constants are analyzed to determine the blind pipe enhanced pressure.
[0030] By adopting the above technical solution, the soil detection pressure, tailwater flow parameters and soil blind pipe constant are analyzed to determine the blind pipe enhanced pressure, thereby ensuring that after the blind pipe enhanced pressure is applied, the treated tailwater can remain in the soil waiting for the salt to dissolve, thereby improving the accuracy and reliability of the blind pipe enhanced pressure.
[0031] Optionally, the steps of analyzing the soil test pressure, tailwater flow parameters, and soil blind pipe constants to determine blind pipe enhanced pressure include:
[0032] Analyze soil test pressure, tailwater flow parameters and soil pipe constants to determine the total pipe pressure;
[0033] Analyze the total pressure of the blind pipe and the preset atmospheric pressure to determine the blind pipe pressure amplitude;
[0034] The remaining dissolution time is analyzed to determine the pressure oscillation frequency;
[0035] The atmospheric pressure, the amplitude of the blind pipe pressure, the pressure oscillation frequency and the preset sine function are analyzed to determine the blind pipe enhanced pressure.
[0036] By adopting the above technical solution, the difference between the total pressure of the blind pipe and the atmospheric pressure is calculated to obtain the blind pipe pressure amplitude, and then the atmospheric pressure, the blind pipe pressure amplitude, the pressure oscillation frequency and the sine function are analyzed to obtain the blind pipe enhanced pressure, so that the pressure in the blind pipe vibrates according to the sine wave, and the treated tail water approaches the blind pipe and then moves away from the blind pipe, so that the treated tail water flushes the soil, thereby ensuring a good saline-alkali land improvement effect.
[0037] Optionally, the step of obtaining the salt dissolution time includes:
[0038] Obtain the type of dissolved salts in saline-alkali land;
[0039] Determine the salt diffusion coefficient based on the dissolved salt type and the preset salt diffusion relationship;
[0040] Obtain dissolution characteristic length;
[0041] The dissolution characteristic length and salt diffusion coefficient were analyzed to determine the salt dissolution time.
[0042] According to the technical scheme, the salt diffusion coefficient is determined according to the type of dissolved salt and the salt diffusion relationship, and then the salt dissolution time is calculated according to the characteristic length of dissolution and the salt diffusion coefficient, so that the accuracy of the salt dissolution time is improved.
[0043] Optionally, the step of controlling the pressure device to reduce the pressure of the underground pipe according to the dissolution completion trigger signal to promote the treated tail water to seep into the underground pipe and be discharged comprises:
[0044] obtaining a target seepage velocity based on the dissolution completion trigger signal;
[0045] analyzing the target seepage velocity to determine the pressure reduction of the underground pipe;
[0046] controlling the pressure device to reduce the pressure of the underground pipe according to the pressure reduction of the underground pipe to promote the treated tail water to seep into the underground pipe and be discharged.
[0047] According to the technical scheme, the pressure reduction of the underground pipe is determined by analyzing the target seepage velocity, and then the pressure of the underground pipe is reduced according to the pressure reduction of the underground pipe, so that the treated tail water seeps into the underground pipe and is discharged, and the good improvement effect of the saline-alkali soil is ensured.
[0048] Optionally, the step of obtaining the target seepage velocity based on the dissolution completion trigger signal comprises:
[0049] obtaining the soil porosity, the target salt discharge depth and the maximum drainage time;
[0050] analyzing the soil porosity, the target salt discharge depth and the maximum drainage time to determine an efficiency constraint velocity;
[0051] obtaining the soil intrinsic permeability, the soil effective stress and the tail water dynamic viscosity;
[0052] analyzing the soil intrinsic permeability, the soil effective stress, the tail water dynamic viscosity, a preset safety factor and a preset radius of the underground pipe to determine a stability constraint velocity;
[0053] analyzing the efficiency constraint velocity and the stability constraint velocity to determine the target seepage velocity.
[0054] According to the technical scheme, the efficiency constraint velocity is determined by analyzing the soil porosity, the target salt discharge depth and the maximum drainage time, and then the stability constraint velocity is determined by analyzing the soil intrinsic permeability, the soil effective stress, the tail water dynamic viscosity, the preset safety factor and the radius of the underground pipe, so that the minimum of the efficiency constraint velocity and the stability constraint velocity is selected as the target seepage velocity, and the efficiency and stability of the seepage process are ensured.
[0055] Optionally, the step of analyzing the target seepage velocity to determine the pressure reduction of the underground pipe comprises:
[0056] obtaining the soil water pressure and the discharge influence radius;
[0057] analyzing the discharge influence radius, the tail water dynamic viscosity, the soil intrinsic permeability, the target seepage velocity, the preset buried pipe radius, the preset buried pipe depth, the preset tail water density and the preset gravitational acceleration to determine the pressure correction term;
[0058] analyzing the soil water pressure and the pressure correction term to determine the buried pipe reduced pressure.
[0059] By using the above technical solution, the discharge influence radius, the tail water dynamic viscosity, the soil intrinsic permeability, the target seepage velocity, the buried pipe radius, the buried pipe depth, the tail water density and the gravitational acceleration are analyzed to determine the pressure correction term, so as to calculate the sum of the soil water pressure and the pressure correction term to obtain the buried pipe reduced pressure, thereby improving the accuracy and reliability of the buried pipe reduced pressure.
[0060] In a second aspect, the application provides a saline-alkali soil treatment system based on water circulation, which adopts the following technical solution:
[0061] A saline-alkali soil treatment system based on water circulation, comprising:
[0062] An obtaining module for obtaining tail water irrigation time and dissolution completion trigger signal;
[0063] A memory for storing the program of the saline-alkali soil treatment method based on water circulation according to any one of the above;
[0064] A processor, the program in the memory can be loaded and executed by the processor and implement the saline-alkali soil treatment method based on water circulation according to any one of the above.
[0065] By using the above technical solution, the processor loads and executes the program of the saline-alkali soil treatment method based on water circulation stored in the memory, controls the obtaining module to obtain a series of data related to the saline-alkali soil treatment based on water circulation, so as to control the pressure device to increase the pressure of the buried pipe when the tail water irrigation time meets the requirement of the infiltration irrigation time after the irrigation device irrigates the tail water in the saline-alkali soil, so as to drive the tail water to remain in the saline-alkali soil to promote the dissolution of salt, and control the pressure device to reduce the pressure of the buried pipe after the dissolution is completed, so as to promote the tail water to quickly infiltrate into the buried pipe and discharge the saline-alkali soil to take the salt away from the saline-alkali soil, thereby ensuring good saline-alkali soil improvement effect.
[0066] In a third aspect, the application provides an intelligent terminal, which adopts the following technical solution:
[0067] An intelligent terminal comprises a memory and a processor, and the memory stores a computer program capable of being loaded and executed by the processor to implement the water cycle-based saline-alkali soil treatment method according to any one of the above.
[0068] By adopting the technical scheme, the processor loads and executes the computer program of the water cycle-based saline-alkali soil treatment method stored in the memory by operating the intelligent terminal, so that when it is determined that the tail water irrigation time meets the requirement of the infiltration irrigation time after the irrigation device irrigates the tail water in the saline-alkali soil, the pressure device is controlled to enhance the pressure of the buried pipe, so as to drive the tail water to stay in the saline-alkali soil to promote the dissolution of the salt, and after the dissolution is completed, the pressure device is controlled to reduce the pressure of the buried pipe, so as to promote the tail water to quickly infiltrate into the buried pipe and out of the saline-alkali soil, so as to take the salt away from the saline-alkali soil, thereby ensuring a good saline-alkali soil improvement effect.
[0069] In summary, the present application has at least one of the following beneficial technical effects:
[0070] 1. By determining that the tail water irrigation time meets the requirement of the infiltration irrigation time after the irrigation device irrigates the tail water in the saline-alkali soil, the pressure device is controlled to enhance the pressure of the buried pipe, so as to drive the tail water to stay in the saline-alkali soil to promote the dissolution of the salt, and after the dissolution is completed, the pressure device is controlled to reduce the pressure of the buried pipe, so as to promote the tail water to quickly infiltrate into the buried pipe and out of the saline-alkali soil, so as to take the salt away from the saline-alkali soil, thereby ensuring a good saline-alkali soil improvement effect;
[0071] 2. By calculating the difference between the total pressure of the buried pipe and the atmospheric pressure to obtain the pressure amplitude of the buried pipe, the atmospheric pressure, the pressure amplitude of the buried pipe, the pressure oscillation frequency and the sine function are analyzed to obtain the enhanced pressure of the buried pipe, so that the pressure in the buried pipe vibrates in a sine wave, and the tail water approaches and then moves away from the buried pipe, so that the tail water washes the soil, thereby ensuring a good saline-alkali soil improvement effect;
[0072] 3. By analyzing the target seepage velocity to determine the reduced pressure of the buried pipe, the pressure device is controlled to reduce the pressure of the buried pipe according to the reduced pressure of the buried pipe, so as to promote the tail water to infiltrate into the buried pipe and out of the saline-alkali soil, thereby ensuring a good saline-alkali soil improvement effect. BRIEF DESCRIPTION OF DRAWINGS
[0073] Figure 1 is a flowchart of the water cycle-based saline-alkali soil treatment method in the embodiments of the present application.
[0074] Figure 2 is a flowchart of the step of controlling the preset pressure device to enhance the pressure of the preset buried pipe to promote the dissolution of the salt in the saline-alkali soil into the tail water in the embodiments of the present application.
[0075] Figure 3is a flow chart of a step of obtaining a pipe-reinforced pressure in an embodiment of the present application.
[0076] Figure 4 is a flow chart of a step of analyzing the soil detection pressure, tail water flow parameters and soil pipe constant to determine the pipe-reinforced pressure in an embodiment of the present application.
[0077] Figure 5 is a flow chart of a step of obtaining a salt dissolution time in an embodiment of the present application.
[0078] Figure 6 is a flow chart of a step of controlling the pressure device to reduce the pressure of the pipe to promote the infiltration of the tail water into the pipe for discharge in an embodiment of the present application according to the dissolution completion trigger signal.
[0079] Figure 7 is a flow chart of a step of obtaining a target seepage velocity based on the dissolution completion trigger signal in an embodiment of the present application.
[0080] Figure 8 is a flow chart of a step of analyzing the target seepage velocity to determine the pipe pressure reduction in an embodiment of the present application. DETAILED DESCRIPTION
[0081] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will combine with the drawings and embodiments to further describe the present application in detail. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Figures 1 to 8
[0082] The embodiment of the present application discloses a saline-alkali soil treatment method based on water circulation, specifically discloses a treatment terminal, an irrigation device, a pipe and a pressure device, the treatment terminal is in communication connection with the irrigation device and the pressure device to realize data interaction and control, after the operation personnel controls the irrigation device to irrigate the treatment tail water into the saline-alkali soil, the treatment terminal counts the tail water irrigation time, when the treatment terminal determines that the tail water irrigation time meets the requirement of the infiltration irrigation time, the treatment terminal controls the pressure device to reinforce the pressure of the pipe, thereby slowing down the speed of the treatment tail water infiltrating into the pipe, making the salt in the soil fully dissolved into the treatment tail water, after the treatment terminal receives the dissolution completion trigger signal, the treatment terminal controls the pressure device to reduce the pressure of the pipe, thereby promoting the tail water to infiltrate into the pipe to discharge the saline-alkali soil, thereby ensuring good saline-alkali soil improvement effect.
[0083] With reference to Figure 1 , the embodiment of the present application discloses a saline-alkali soil treatment method based on water circulation, comprising the following steps:
[0084] Step S100: control the preset irrigation device to irrigate the preset treatment tail water into the preset saline-alkali soil, and obtain the tail water irrigation time.
[0085] Irrigation equipment refers to the device used to irrigate treated tailwater into saline-alkali land. It can be implemented through sprinkler or drip irrigation, with the operator selecting the specific device based on actual needs. Treated tailwater refers to pre-treated aquaculture tailwater, which is treated by removing suspended particles through sedimentation and filtration, then using microorganisms to degrade organic pollutants and ultimately kill pathogens. Saline-alkali land refers to land awaiting salt flushing from treated tailwater.
[0086] Tailwater irrigation time refers to the time it takes for an irrigation device to irrigate and treat tailwater in saline-alkali land. After the irrigation device is started, the irrigation device sends a timing instruction to the processing terminal, and the processing terminal obtains the time by timing in response to the timing instruction.
[0087] Step S101: determining whether the tailwater irrigation time meets the preset infiltration irrigation time requirement.
[0088] The infiltration irrigation time refers to the time it takes for the treated tailwater to infiltrate the soil to a specified depth. This depth is determined by the operator by subtracting a depth margin from the buried pipe depth. This margin ensures pressure adjustment. The operator buries a humidity sensor at the specified depth in the saline-alkali soil in advance and irrigates the soil to measure the time. The infiltration irrigation time is the time the humidity sensor detects moisture. The infiltration irrigation time requirement is equal to the infiltration irrigation time.
[0089] The processing terminal determines whether the tailwater irrigation time is equal to the infiltration irrigation time, thereby determining whether the pressure of the concealed pipe needs to be controlled.
[0090] Step S1011: If not, continue to obtain the tail water irrigation time for cyclic judgment.
[0091] Among them, if the treatment terminal determines that the tail water irrigation time is not equal to the infiltration irrigation time, it means that the treated tail water has not yet infiltrated to the specified depth for pressure adjustment, so the tail water irrigation time continues to be tested and the treated tail water is waiting for infiltration.
[0092] Step S1012: If it is met, the preset pressure device is controlled to increase the pressure of the preset blind pipe to promote the dissolution of salt in the saline-alkali land into the treated tail water.
[0093] If the treatment terminal determines that the tailwater irrigation time is equal to the infiltration irrigation time, it means that the treated tailwater has infiltrated to the specified depth for pressure adjustment. Therefore, the pressure control device is used to increase the pressure of the blind pipe. For specific methods, refer to Figure 2 steps, thereby slowing down the infiltration rate of the treated tail water into the saline-alkali land and ensuring that the salt in the saline-alkali land is fully dissolved in the treated tail water.
[0094] A pressure device is a device used to adjust the pressure within a concealed pipe. This device, typically an air pump, is installed at the end of the concealed pipe and adjusts the pressure by pumping air into or out of the pipe. Concealed pipes are pipes used to remove salt-containing tailwater from saline-alkali land using concealed drainage technology. The placement of these pipes is determined by the operator based on actual needs.
[0095] Step S102: Obtaining a dissolution completion trigger signal.
[0096] Among them, the dissolution completion trigger signal refers to the trigger preference when the salt is fully dissolved in the treated tail water. The treatment terminal compares the dissolution time and the irrigation time. After determining that the irrigation time is equal to the dissolution time, the treatment terminal activates the dissolution completion trigger signal.
[0097] Step S103: According to the dissolution completion trigger signal, the pressure device is controlled to reduce the pressure of the blind pipe to promote the treated tail water to penetrate into the blind pipe and be discharged.
[0098] Among them, after the processing terminal receives the dissolution completion trigger signal, the processing terminal responds to the dissolution completion trigger signal, thereby controlling the pressure device to reduce the pressure of the dark pipe. The specific method is referred to Figure 6 steps to promote the treatment of tail water into the concealed pipe to discharge the saline-alkali land, ensuring a good saline-alkali land improvement effect.
[0099] Reference Figure 2 The steps of controlling a preset pressure device to increase the pressure of a preset blind pipe to promote the dissolution of salt in the saline-alkali land into the treated tail water include:
[0100] Step S200: Obtaining salt dissolution time.
[0101] The salt dissolution time refers to the time it takes for the salt to fully dissolve in the treated tail water. For specific methods of obtaining the salt, refer to Figure 5 steps.
[0102] Step S201: determining whether the salt dissolution time meets the tailwater irrigation time requirement.
[0103] The tailwater irrigation time requirement is that it should not exceed the tailwater irrigation time. The processing terminal determines whether the salt dissolution time is not greater than the tailwater irrigation time, thereby determining whether pressure enhancement is required.
[0104] Step S2011: If the conditions are met, a preset dissolution completion trigger signal is output.
[0105] Among them, if the processing terminal determines that the salt dissolution time is not greater than the tail water irrigation time, it means that the salt has been fully dissolved before the treated tail water has penetrated to the specified depth, so there is no need for pressure enhancement, and thus a dissolution completion trigger signal is output.
[0106] The dissolution completion trigger signal in this step is consistent with the dissolution completion trigger signal in step S102, and will not be described in detail here.
[0107] Step S2012: If not, the salt dissolution time and tail water irrigation time are analyzed to determine the remaining dissolution time.
[0108] Among them, if the treatment terminal determines that the salt dissolution time is greater than the tail water irrigation time, it means that the salt is not fully dissolved when the treated tail water penetrates to the specified depth. Therefore, the remaining dissolution time is determined after analyzing the salt dissolution time and the tail water irrigation time, providing data support for the subsequent control of the pressure device to increase the pressure.
[0109] The remaining dissolution time refers to the time required for the salt to fully dissolve in the treated tail water, which is calculated by the treatment terminal as the difference between the salt dissolution time and the tail water irrigation time.
[0110] Step S202: Obtain the enhanced pressure of the dark pipe.
[0111] Among them, the blind pipe enhanced pressure refers to the adjustment data of the blind pipe pressure by the pressure device. The specific acquisition method is referred to Figure 3 steps.
[0112] Step S203: Control the pressure device to increase the pressure of the blind pipe according to the blind pipe enhanced pressure and the remaining dissolution time to promote the dissolution of salt in the saline-alkali land into the treated tail water.
[0113] Among them, after the treatment terminal determines the increased pressure of the blind pipe, the treatment terminal controls the pressure device to increase the pressure of the blind pipe during the remaining dissolution time, thereby slowing down the seepage speed of the treated tail water in the soil and allowing the salt in the saline-alkali land to be fully dissolved in the treated tail water.
[0114] Reference Figure 3 , the steps of obtaining the enhanced pressure of the blind pipe include:
[0115] Step S300: Obtain soil hydraulic conductivity.
[0116] Among them, the soil hydraulic conductivity coefficient refers to the permeability of the soil, which is measured in meters per second and depends on the soil type. The operator forms a mapping table by mapping different soil types to hydraulic conductivity coefficients one by one, and the processing terminal searches the mapping table for the hydraulic conductivity coefficient based on the soil type.
[0117] Step S301: Analyze the soil hydraulic conductivity coefficient and tailwater irrigation time to determine the influence radius of the concealed pipe.
[0118] Among them, the influence radius of the concealed pipe refers to the range of influence of the concealed pipe on soil moisture, which is obtained by calculating the soil hydraulic conductivity coefficient and the tailwater irrigation time by the processing terminal. The specific calculation process is: the square root of the product of the soil hydraulic conductivity coefficient and the tailwater irrigation time is multiplied by the empirical constant to obtain the influence radius of the concealed pipe. In the embodiment of this application, the empirical constant is 1.5, which is fitted by the operator during the test process.
[0119] Step S302: Analyze the soil hydraulic conductivity coefficient, the blind pipe influence radius, the preset tailwater density, the preset blind pipe radius and the preset gravitational acceleration to determine the soil blind pipe constant.
[0120] Here, "tailwater density" refers to the density of the treated tailwater, measured by the operator and stored in the processing terminal. "Blind pipe radius" refers to the radius of the blind pipe, stored by the operator in the processing terminal. In the examples of this application, the acceleration due to gravity is 9.81 meters per second squared.
[0121] The soil concealed pipe constant refers to the ability of soil to transfer water to the concealed pipe. The larger the soil concealed pipe constant, the higher the drainage efficiency of the soil concealed pipe system. It is obtained by calculating the soil hydraulic conductivity coefficient, concealed pipe influence radius, tailwater density, concealed pipe radius and gravitational acceleration by the processing terminal. The specific calculation process is: first calculate the first product of 2π and the soil hydraulic conductivity coefficient, then calculate the quotient of the concealed pipe influence radius and the concealed pipe radius, calculate the logarithm of the quotient with base e and multiply it by the tailwater density and gravitational acceleration to obtain the second product, and finally calculate the quotient of the first product and the second product to obtain the soil concealed pipe constant.
[0122] Step S303: Analyze the remaining dissolution time and the preset remaining penetration depth to determine tailwater flow parameters.
[0123] Among them, the tail water flow parameter refers to the flow velocity of the treated tail water after being controlled in the soil, which is obtained by calculating the quotient of the remaining infiltration depth and half of the remaining dissolution time by the treatment terminal.
[0124] Step S304: Obtain the soil test pressure of the saline-alkali land.
[0125] The soil test pressure refers to the average pressure in the soil, which is obtained after detection by a tensiometer and is considered to be constant in the short term.
[0126] Step S305: Analyze the soil detection pressure, tailwater flow parameters and soil blind pipe constant to determine the blind pipe enhanced pressure.
[0127] The enhanced pressure of the concealed pipe in this step is consistent with that in step S202, and is obtained by analyzing the soil detection pressure, tailwater flow parameters and soil concealed pipe constant by the processing terminal. The specific method is referred to Figure 4the step of S305.
[0128] Referring to Figure 4 The step of analyzing the soil detection pressure, tail water flow parameter and soil buried pipe constant to determine the buried pipe enhanced pressure comprises:
[0129] Step S400: analyzing the soil detection pressure, tail water flow parameter and soil buried pipe constant to determine the total buried pipe pressure.
[0130] The total buried pipe pressure refers to the maximum total pressure in the buried pipe, which is calculated by the processing terminal from the quotient of the tail water flow parameter and the soil buried pipe constant, and the difference between the soil detection pressure and the quotient.
[0131] Step S401: analyzing the total buried pipe pressure and the preset atmospheric pressure to determine the buried pipe pressure amplitude.
[0132] The atmospheric pressure refers to the atmospheric pressure in the saline-alkali region, which is detected by a barometer.
[0133] The buried pipe pressure amplitude refers to the adjustment amplitude of the pressure in the buried pipe, which is calculated by the processing terminal from the difference between the total buried pipe pressure and the atmospheric pressure.
[0134] Step S402: analyzing the remaining dissolution time to determine the pressure oscillation frequency.
[0135] The pressure oscillation frequency refers to the number of times of adjusting the pressure per unit time, which is calculated by the processing terminal from the reciprocal of the remaining dissolution time.
[0136] Step S403: analyzing the atmospheric pressure, buried pipe pressure amplitude, pressure oscillation frequency and preset sinusoidal function to determine the buried pipe enhanced pressure.
[0137] The sinusoidal function refers to a function that controls the pressure adjustment as a periodic sinusoidal fluctuation with time as the unknown.
[0138] The buried pipe enhanced pressure in this step is consistent with the buried pipe enhanced pressure in step S305, which is calculated by the processing terminal from the product of the buried pipe pressure amplitude and the sinusoidal function with the frequency of the pressure oscillation frequency, and then adding the atmospheric pressure.
[0139] Referring to Figure 5 The step of obtaining the salt dissolution time comprises:
[0140] Step S500: obtaining the dissolved salt type of the saline-alkali soil.
[0141] The dissolved salt type refers to the type of dissolved salt, which is obtained by the operator detecting the salt in the saline-alkali soil and inputting it into the processing terminal.
[0142] Step S501: determining a salt diffusion coefficient according to the type of dissolved salt and a preset salt diffusion relationship.
[0143] The salt diffusion relationship refers to the correspondence between different salts and diffusion coefficients. The operator searches for the diffusion coefficients of different salts and forms a mapping table by corresponding the different salts to the diffusion coefficients one by one.
[0144] The salt diffusion coefficient refers to the diffusion coefficient of salt in water. The processing terminal searches the salt diffusion relationship mapping table according to the dissolved salt type to obtain the diffusion coefficients of all different salts and selects the smallest diffusion coefficient as the salt diffusion coefficient. When calculating the dissolution time later, it ensures that all salts can be fully dissolved within the dissolution time.
[0145] Step S502: Obtaining the dissolution characteristic length.
[0146] The characteristic length of dissolution refers to the distance that salt needs to diffuse. In the embodiment of the present application, the distance between soil particles is used as the characteristic length of dissolution.
[0147] Step S503: Analyze the dissolution characteristic length and the salt diffusion coefficient to determine the salt dissolution time.
[0148] The salt dissolution time in this step is consistent with the salt dissolution time in step S200 and is obtained by calculating the quotient of the square of the dissolution characteristic length and the salt diffusion coefficient by the processing terminal.
[0149] Reference Figure 6 The steps of controlling the pressure device to reduce the pressure of the blind pipe according to the dissolution completion trigger signal to promote the treated tail water to penetrate into the blind pipe and be discharged include:
[0150] Step S600: obtaining a target percolation velocity based on a dissolution completion trigger signal.
[0151] The target seepage velocity refers to the velocity that promotes the seepage of treated tailwater into the underground pipe. The specific method of obtaining it is as follows: Figure 7 steps.
[0152] Step S601: Analyze the target seepage velocity to determine the pressure reduction of the blind pipe.
[0153] Among them, the pressure reduction of the blind pipe refers to the pressure that promotes the infiltration of the treated tail water into the blind pipe, which is determined by the treatment terminal after analyzing the target seepage velocity. The specific method is referred to Figure 8 steps.
[0154] Step S602: according to the pressure reduction of the concealed pipe, the pressure control device reduces the pressure of the concealed pipe to promote the treated tail water to penetrate into the concealed pipe and be discharged.
[0155] Among them, after the treatment terminal determines that the pressure in the blind pipe is reduced, the treatment terminal controls the pressure device to reduce the pressure in the blind pipe to the blind pipe reduction pressure, thereby promoting the treatment tail water in the soil to quickly infiltrate into the blind pipe, thereby discharging salt from the saline-alkali land.
[0156] Reference Figure 7 The steps of obtaining the target seepage velocity based on the dissolution completion trigger signal include:
[0157] Step S700: Acquire soil porosity, target salt drainage depth, and maximum drainage time.
[0158] Soil porosity refers to the volume fraction of voids in the soil, determined by operators through actual testing of saline-alkali land. The target drainage depth refers to the depth from the saline-alkali land surface to the underground pipe, input by the operator into the treatment terminal. The maximum drainage time refers to the time it takes for treated tailwater to drain from the soil into the underground pipe, determined by the operator based on actual needs.
[0159] Step S701: Analyze soil porosity, target salt drainage depth, and maximum drainage time to determine efficiency constraint speed.
[0160] Among them, the efficiency constraint speed refers to the drainage speed constrained by drainage efficiency, which is obtained by calculating the product of soil porosity and target salt drainage depth by the processing terminal, and then calculating the quotient of the product and the maximum drainage time.
[0161] Step S702: Obtain soil intrinsic permeability, soil effective stress, and tailwater dynamic viscosity.
[0162] Among them, the inherent permeability of soil refers to the ability of water to pass through the soil medium under unit hydraulic gradient, which is obtained by the operator through a constant head permeability test.
[0163] Soil effective stress refers to the force exerted on the contact points of soil particles. The processing terminal calculates the product of the weight and depth of the soil to obtain the total stress. The pore water pressure is then tested and the difference between the total stress and the pore water pressure is calculated.
[0164] The dynamic viscosity of tail water refers to the friction force inside the water fluid that resists relative motion. It is obtained by operators directly measuring the dynamic viscosity of the treated tail water using a rotational viscometer in a laboratory environment.
[0165] Step S703: Analyze the soil inherent permeability, soil effective stress, tailwater dynamic viscosity, preset safety factor, and preset blind pipe radius to determine the stability constraint speed.
[0166] The safety factor is an empirical amplification factor to ensure the seepage velocity under stable soil conditions. This factor is calculated by operators testing the soil's maximum bearing capacity and actual working load, then calculating the quotient of the maximum bearing capacity and the actual working load. The hidden pipe radius is the radius of the half-pipe, which is input into the processing terminal by the operator.
[0167] The stability-constrained velocity refers to the seepage velocity constrained by soil stability. The processing terminal calculates the first product of the soil inherent permeability and the effective stress of the soil, then calculates the second product of the tailwater dynamic viscosity, safety factor and the radius of the concealed pipe, and finally calculates the quotient of the first product and the second product.
[0168] Step S704: Analyze the efficiency constraint speed and the stability constraint speed to determine the target seepage speed.
[0169] The target seepage velocity in this step is consistent with the target seepage velocity in step S600 . The processing terminal compares the efficiency-constrained velocity and the stability-constrained velocity, and selects the minimum velocity as the target seepage velocity.
[0170] Reference Figure 8 , the target seepage velocity is analyzed to determine the steps for reducing pressure in the blind pipe, including:
[0171] Step S800: Acquire soil water pressure and drainage influence radius.
[0172] Among them, soil water pressure refers to the force exerted by pore water in the soil on the soil particle skeleton, which is detected by the tensiometer and sent to the processing terminal.
[0173] The discharge influence radius in this step is consistent with the hidden pipe influence radius in step S301, and will not be described in detail here.
[0174] Step S801: Analyze the discharge influence radius, tailwater dynamic viscosity, soil inherent permeability, target seepage velocity, preset blind pipe radius, preset blind pipe depth, preset tailwater density and preset gravitational acceleration to determine the pressure correction term.
[0175] The hidden pipe radius, tailwater density, and gravitational acceleration in this step are consistent with those in step S302 and are not described here. The hidden pipe depth refers to the depth of the hidden pipe in the soil and is input into the processing terminal by the operator.
[0176] The pressure correction term refers to the influence value of tail water viscosity, drainage speed, pipe shape and gravity on pressure, and is calculated by the processing terminal based on the discharge influence radius, tail water dynamic viscosity, soil intrinsic permeability, target seepage speed, pipe radius, pipe depth, tail water density and gravity acceleration. The specific calculation method is as follows: first, calculate the first quotient of the tail water dynamic viscosity and the soil intrinsic permeability, then calculate the second quotient of the discharge influence radius and the pipe radius, and calculate the logarithm of the second quotient with e as the base, and finally calculate the product of the first quotient, the target seepage speed, the logarithm of the second quotient with e as the base, the tail water density, the gravity acceleration and the pipe depth.
[0177] Step S802: analyzing the soil water pressure and the pressure correction term to determine the pipe pressure reduction.
[0178] In this step, the pipe pressure reduction is consistent with the pipe pressure reduction in step S601, and the difference between the soil water pressure and the pressure correction term is calculated by the processing terminal.
[0179] Based on the same inventive concept, the embodiments of the present application provide a saline-alkali soil treatment system based on water circulation, comprising:
[0180] The acquisition module is configured to acquire the tail water irrigation time, the dissolution completion trigger signal, the salt dissolution time, the pipe enhanced pressure, the soil hydraulic conductivity, the soil detection pressure, the dissolved salt type, the dissolution characteristic length, the target seepage speed, the soil porosity, the target salt discharge depth, the maximum drainage time, the soil intrinsic permeability, the soil effective stress, the tail water dynamic viscosity, the soil water pressure and the discharge influence radius.
[0181] The memory is configured to store the program of the saline-alkali soil treatment method based on water circulation.
[0182] The processor can load and execute the program in the memory, and implement the saline-alkali soil treatment method based on water circulation.
[0183] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is exemplified, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.
[0184] The embodiments of the present application provide a computer readable storage medium, which stores a computer program capable of being loaded and executed by a processor to implement the saline-alkali soil treatment method based on water circulation.
[0185] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.
[0186] Based on the same inventive concept, an embodiment of the present application provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a saline-alkali land treatment method based on water circulation.
[0187] Those skilled in the art will clearly understand that for the sake of convenience and brevity, the division of the above-mentioned functional modules is only used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-mentioned systems, devices, and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.
[0188] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of this application. Unless otherwise stated, any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is merely an example of a series of equivalent or similar features.
Claims
1. A saline-alkali land treatment method based on water circulation, characterized in that: include: Control the preset irrigation device to irrigate the preset treated tail water into the preset saline-alkali land, and obtain the tail water irrigation time; Determine whether the tailwater irrigation time meets the preset infiltration irrigation time requirements; If it does not meet the requirements, continue to obtain the tailwater irrigation time for cyclic judgment; If it meets the requirements, the preset pressure device is controlled to increase the pressure of the preset blind pipe to promote the dissolution of salt in the saline-alkali land into the treated tail water; Obtaining a dissolution completion trigger signal; According to the trigger signal of completion of dissolution, the pressure device is controlled to reduce the pressure of the blind pipe to promote the infiltration of the treated tail water into the blind pipe and discharge.
2. The saline-alkali land treatment method based on water circulation according to claim 1, characterized in that: The steps of controlling a preset pressure device to increase the pressure of a preset blind pipe to promote the dissolution of salt in the saline-alkali land into the treated tail water include: Get the salt dissolution time; Determine whether the salt dissolution time meets the requirements of tailwater irrigation time; If it meets the requirements, the preset dissolution completion trigger signal is output; If not met, the salt dissolution time and tailwater irrigation time are analyzed to determine the remaining dissolution time; Obtain the enhanced pressure of the dark pipe; According to the enhanced pressure of the blind pipe and the remaining dissolution time, the pressure device is controlled to enhance the pressure of the blind pipe to promote the dissolution of salt in the saline-alkali land into the treated tail water.
3. The saline-alkali land treatment method based on water circulation according to claim 2, characterized in that: The steps to obtain the blind pipe boost pressure include: Get soil hydraulic conductivity; Analyze soil hydraulic conductivity and tailwater irrigation time to determine the radius of influence of concealed pipes; Analyze the soil hydraulic conductivity, the influence radius of the concealed pipe, the preset tailwater density, the preset concealed pipe radius, and the preset acceleration of gravity to determine the soil concealed pipe constant; Analyze the remaining dissolution time and the preset remaining penetration depth to determine the tailwater flow parameters; Obtain soil test pressure of saline-alkali land; The soil test pressure, tailwater flow parameters and soil blind pipe constants are analyzed to determine the blind pipe enhanced pressure.
4. The saline-alkali land treatment method based on water circulation according to claim 3 is characterized in that: The steps for analyzing soil test pressure, tailwater flow parameters, and soil pipe constants to determine pipe enhancement pressure include: Analyze soil test pressure, tailwater flow parameters and soil pipe constants to determine the total pipe pressure; Analyze the total pressure of the blind pipe and the preset atmospheric pressure to determine the blind pipe pressure amplitude; The remaining dissolution time is analyzed to determine the pressure oscillation frequency; The atmospheric pressure, the amplitude of the blind pipe pressure, the pressure oscillation frequency and the preset sine function are analyzed to determine the blind pipe enhanced pressure.
5. The saline-alkali land treatment method based on water circulation according to claim 2, characterized in that: The steps to obtain the salt dissolution time include: Obtain the type of dissolved salts in saline-alkali land; Determine the salt diffusion coefficient based on the dissolved salt type and the preset salt diffusion relationship; Obtain dissolution characteristic length; The dissolution characteristic length and salt diffusion coefficient were analyzed to determine the salt dissolution time.
6. The saline-alkali land treatment method based on water circulation according to claim 1, characterized in that: The steps of controlling the pressure device to reduce the pressure of the blind pipe according to the dissolution completion trigger signal to promote the treated tail water to penetrate into the blind pipe and be discharged include: obtaining a target seepage velocity based on a dissolution completion trigger signal; Analyze the target seepage velocity to determine the pressure reduction of the blind pipe; According to the pressure reduction control device of the blind pipe, the pressure of the blind pipe is reduced to promote the treated tail water to penetrate into the blind pipe and be discharged.
7. The saline-alkali land treatment method based on water circulation according to claim 6, characterized in that: The steps of obtaining a target percolation velocity based on a dissolution completion trigger signal include: Obtain soil porosity, target salt drainage depth, and maximum drainage time; Soil porosity, target salt drainage depth, and maximum drainage time were analyzed to determine efficiency-constraining speeds; Obtain soil intrinsic permeability, soil effective stress and tailwater dynamic viscosity; Analyze the soil inherent permeability, soil effective stress, tailwater dynamic viscosity, preset safety factor and preset blind pipe radius to determine the stability constraint speed; The efficiency constraint speed and stability constraint speed are analyzed to determine the target seepage speed.
8. The saline-alkali land treatment method based on water circulation according to claim 7 is characterized in that: The steps for analyzing the target seepage velocity to determine the pressure reduction of the blind pipe include: Obtain soil water pressure and drainage influence radius; Analyze the discharge impact radius, tailwater dynamic viscosity, soil inherent permeability, target seepage velocity, preset blind pipe radius, preset blind pipe depth, preset tailwater density, and preset gravitational acceleration to determine the pressure correction term; Soil water pressure and pressure correction terms are analyzed to determine the pressure reduction caused by the concealed pipe.
9. A saline-alkali land treatment system based on water circulation, characterized in that: include: An acquisition module is used to obtain the tailwater irrigation time and the dissolution completion trigger signal; A memory for storing a program of the saline-alkali land treatment method based on water circulation according to any one of claims 1 to 8; The processor and the program in the memory can be loaded and executed by the processor to implement the saline-alkali land treatment method based on water circulation as described in any one of claims 1 to 8.
10. An intelligent terminal, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes the saline-alkali land treatment method based on water circulation as described in any one of claims 1 to 8.