Design method for mine drainage system integrating calculation, model selection and verification

Abstract

The invention provides a mine drainage system design method integrating calculation, model selection and verification. The mine drainage system design method comprises the following steps that a drainage system design program is opened through double clicks, relevant basic parameters of a mine drainage system are input into a system, a'calculation and model selection basis' button is clicked, and relevant parameters of a water pump model selection basis are obtained through calculation; selecting a water pump and a motor according to relevant parameters of a water pump type selection basis, inputting the relevant parameters, and clicking a'drainage capacity checking calculation 'button to check whether the drainage capacity of the selected water pump and the motor meets relevant regulations of safety regulations or not; inputting the pipe diameter and the wall thickness of the primarily selected drainage pipe, clicking a'pipeline parameter calculation 'button, and checking whether the selected drainage pipe is reasonable or not. According to the mine drainage system design method integrating calculation, model selection and verification, the model selection efficiency is improved, the professional knowledge reserve capacity required by calculation and verification of the mine drainage system by related personnel is reduced, and a new thought is provided for design, model selection and calculation of related industry personnel.

Description

Technical Field

[0001] The present invention relates to the field of intelligent design of mining drainage systems, and in particular to a mine drainage system design method integrating calculation, selection and verification. Background Art

[0002] As one of the indispensable systems in underground mines, the drainage system plays a key role in the construction, safe production and sustainable development of mines. The selection and calculation of water pumps, motors and drainage pipes are important components of drainage system design. Whether the parameters are reasonably selected will directly affect the operation stability and reliability of mine construction and safe production, as well as the economic indicators of electricity consumption under efficient work.

[0003] The design of mine drainage system involves many parts and components, and has the characteristics of detailed calculation, cumbersome selection, and complex construction drawings. This makes the entire design process of the drainage system troublesome. It is often necessary to repeatedly check and verify the drainage equipment and pipelines before the relevant parameters can be finally determined. It requires high practical theoretical quality of the designer. For the design of drainage system, ordinary designers usually use the method of manual step-by-step calculation according to the design manual. Although the design process of this method is relatively detailed and each step has its basis, it takes a long time for people who are not familiar with the manual. They need to interpret every part of the manual in detail before they can carry out a complete design; experienced designers often compile and design according to the manual. For the relevant Excel calculation table, only the basic design parameters need to be input to obtain the relevant calculation parameters. Although the entire calculation and verification process is simplified, a certain amount of professional knowledge is required to skillfully use the entire Excel calculation table. The calculation formulas and results of the relevant calculations saved in the Excel calculation table will be modified or deleted by mistake. It will be time-consuming and laborious to repeat the previous design process. The actual operating condition curve of the water pump still needs to be drawn manually. As the concept of "digitalization and intelligence" penetrates into the mining industry, digital and intelligent development has achieved a lot of results in mine construction and safe production, but mine design is still in the stage of "manual calculation, manual selection and verification, and manual drawing".

[0004] Therefore, it is necessary to provide a mine drainage system design method that integrates calculation, selection and verification to solve the above technical problems. Summary of the invention

[0005] The present invention provides a mine drainage system design method integrating calculation, selection and verification, which solves the problem that mine design still remains in the operation of "manual calculation, manual selection and verification, and manual drawing".

[0006] In order to solve the above technical problems, the present invention provides a mine drainage system design method integrating calculation, selection and verification, comprising the following steps: S1. Double-click to open the drainage system design program, input the relevant basic parameters of the mine drainage system into the system, click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis; S2. Select the water pump and motor based on the relevant parameters of the water pump selection, and enter the relevant parameters. Click the "Calculate Drainage Capacity" button to verify whether the drainage capacity of the selected water pump and motor meets the relevant provisions of the safety regulations; S3. Input the diameter and wall thickness of the preliminarily selected drainage pipe, click the "Calculate Pipeline Parameters" button to check whether the selected drainage pipe is reasonable; S4. Input the relevant parameters of the drainage system and click the "Calculate Pipe Loss" button to obtain the relevant pipe loss calculation results of the drainage system. After calculating the pipe loss, determine whether the initially selected water pump meets the requirements; S5. Click the "Draw Pump Operating Condition Curve" button to draw the actual operating condition curve of the pump to determine whether the pump is in the high-efficiency operating area during actual operation; S6. Click the "Save" button to save the above design calculation and selection results; S7. Click the "Exit" button to exit the program and complete the design of the drainage system.

[0007] Preferably, after double-clicking to open the drainage system design program in S1, the basic parameters related to the mine drainage system that need to be input include: normal water inflow, maximum water inflow, pump room elevation, drainage pipe wellhead elevation, and head loss coefficient. Click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis, including: drainage geometry height, drainage capacity of normal water inflow, drainage capacity of maximum water inflow, and the head of the preliminary water pump.

[0008] Preferably, in S2, according to the selection basis in S1, a water pump and a motor are preliminarily selected and relevant parameters are input, including: rated flow, rated head, water pump efficiency, and motor power. The "Verify Drainage Capacity" button is clicked to verify whether the drainage capacity of the selected water pump and motor meets the relevant provisions of the safety regulations. If any parameter of the preliminarily selected water pump and motor does not meet the relevant provisions of the safety regulations, the models of the water pump and the motor are reselected, and S2 is repeated until the requirements are met. If the parameters of the preliminarily selected water pump and motor meet the relevant provisions of the safety regulations, S3 is executed. After clicking the "Verify Drainage Capacity" button, the output parameters include: motor power, whether the motor meets the requirements, whether the head meets the requirements, the number of water pumps working during normal water gushing, the working time during normal water gushing, the number of water pumps working during maximum water gushing, and the maximum water gushing working time.

[0009] Preferably, the specifications of the drainage pipe are preliminarily selected in S3, and relevant parameters are input, including: the economic flow rate of the drainage pipe, the selected inner diameter of the pipe, and the wall thickness of the pipe. The "Calculate Pipeline Parameters" button is clicked to check whether the selected drainage pipe is reasonable. If the specifications of the preliminarily selected drainage pipe are unreasonable, the specifications of the drainage pipe are reselected. If the specifications of the preliminarily selected drainage pipe are reasonable, S4 is executed. After clicking the "Calculate Pipeline Parameters" button, the output parameters include: the minimum inner diameter of the drainage pipe, the minimum wall thickness, whether the pipe meets the requirements, the normal drainage flow rate, and the maximum drainage flow rate.

[0010] Preferably, in the calculation of pipe head loss in S4, relevant parameters affecting the pipe loss of the drainage system are input, including: pipe length, 45-degree elbow, 90-degree elbow, equal-diameter tee, reducing tee, gate valve, check valve, and click the "Calculate Pipe Loss" button to calculate the pipe loss related parameters and verify whether the drainage equipment selection after calculating the pipe loss meets the requirements. If the water pump head does not meet the requirements after calculating the pipe loss, return to S2, reselect the water pump and the motor, and then perform the above steps in sequence. If the water pump head meets the requirements after calculating the pipe loss, continue to execute S5. After clicking the "Calculate Pipe Loss" button, the output parameters include: along-the-way resistance coefficient, along-the-way loss, local loss, required total head, whether the water pump head meets the requirements after calculating the pipe loss, R1 and R2.

[0011] Preferably, the actual operating condition curve of the water pump is drawn in S5 by clicking the "Draw Water Pump Operating Condition Curve" button to draw the actual operating condition curve of the water pump. According to the performance curve of the water pump equipment, it is determined whether the water pump is in the high-efficiency operating area during actual operation. If it is not in the high-efficiency operating area, return to S3 or S4, adjust the pipeline characteristics of the drainage system, and then perform the above steps in sequence. If it is in the high-efficiency operating area, continue to execute S6, and output the "Water Pump Operating Condition Curve Diagram": a water pump head-flow diagram considering the drainage pipe with a 10% reduction in cross-sectional area due to siltation of the inner diameter, and a water pump head-flow diagram not considering the siltation of the inner wall of the drainage pipe.

[0012] Preferably, the data in S6 is saved. Click the "Save" button to save the results of the above-mentioned design calculation and selection. The location for saving the data and the corresponding file name can be independently selected. The saved data can be opened and viewed at any time. After saving the data, execute S7.

[0013] Preferably, the program in S7 exits, click the "Exit" button, a "Confirm Close" dialog box pops up, click "YES" to exit completely, and complete the entire design program.

[0014] Compared with the related art, the mine drainage system design method provided by the present invention which integrates calculation, selection and verification has the following beneficial effects: The present invention provides a mine drainage system design method that integrates calculation, selection and verification. This method realizes the design, calculation and verification process of an "end-to-end" "digitalized" mine drainage system. The principle is clear, the calculation and verification process is simplified, the selection method is scientific, the system operation is simple, the selection efficiency is improved, and the professional knowledge reserve capacity required for the calculation and verification of the mine drainage system by relevant personnel is reduced, providing new ideas for the design, selection and calculation of relevant industry personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a preferred embodiment of a mine drainage system design method that integrates calculation, selection and verification provided by the present invention; Figure 2 A GUI interface diagram of a mine drainage system design method integrating calculation, selection and verification processes according to the present invention; Figure 3 The present invention is a diagram of the entire process of implementing a specific implementation case of a mine drainage system design method that integrates the calculation, selection, and verification processes. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0017] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of a preferred embodiment of a mine drainage system design method that integrates calculation, selection and verification provided by the present invention; Figure 2 A GUI interface diagram of a mine drainage system design method integrating calculation, selection and verification processes according to the present invention; Figure 3 The whole process diagram of a specific implementation case of a mine drainage system design method integrating calculation, selection and verification of the present invention. A mine drainage system design method integrating calculation, selection and verification comprises the following steps: S1. Double-click to open the drainage system design program, input the relevant basic parameters of the mine drainage system into the system, click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis; S2. Select the water pump and motor based on the relevant parameters of the water pump selection, and enter the relevant parameters. Click the "Calculate Drainage Capacity" button to verify whether the drainage capacity of the selected water pump and motor meets the relevant provisions of the safety regulations; S3. Input the diameter and wall thickness of the preliminarily selected drainage pipe, click the "Calculate Pipeline Parameters" button to check whether the selected drainage pipe is reasonable; S4. Input the relevant parameters of the drainage system and click the "Calculate Pipe Loss" button to obtain the relevant pipe loss calculation results of the drainage system. After calculating the pipe loss, determine whether the initially selected water pump meets the requirements; S5. Click the "Draw Pump Operating Condition Curve" button to draw the actual operating condition curve of the pump to determine whether the pump is in the high-efficiency operating area during actual operation; S6. Click the "Save" button to save the above design calculation and selection results; S7. Click the "Exit" button to exit the program and complete the design of the drainage system.

[0018] After double-clicking to open the drainage system design program in S1, the basic parameters related to the mine drainage system that need to be input include: normal water inflow, maximum water inflow, pump room elevation, drainage pipe wellhead elevation, and head loss coefficient. Click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis, including: drainage geometry height, normal water inflow drainage capacity, maximum water inflow drainage capacity, and the head of the preliminary selected water pump.

[0019] The formulas that need to be programmed into S1 are: In the formula involved in S1, Q1 is the normal water inflow, Q2 is the maximum water inflow, the elevation of the pump room is H1, the elevation of the drainage pipe wellhead is H2, the head loss coefficient K, H p Drainage geometric height, drainage capacity of Q3 normal water inflow, drainage capacity of Q4 maximum water inflow, and head of H primary water pump. Considering the practical significance of the input parameters, the program is set to limit the range of the relevant parameters of S1 input, that is, .

[0020] In S2, according to the selection basis in S1, the water pump and the motor are preliminarily selected and relevant parameters are input, including: rated flow, rated head, water pump efficiency, and motor power. The "Verify Drainage Capacity" button is clicked to verify whether the drainage capacity of the selected water pump and the motor meets the relevant provisions of the safety regulations. If any parameter of the preliminarily selected water pump and the motor does not meet the relevant provisions of the safety regulations, the models of the water pump and the motor are reselected, and S2 is repeated until the requirements are met. If the parameters of the preliminarily selected water pump and the motor meet the relevant provisions of the safety regulations, S3 is executed. After clicking the "Verify Drainage Capacity" button, the output parameters include: motor power, whether the motor meets the requirements, whether the head meets the requirements, the number of water pumps working during normal water inrush, the working time during normal water inrush, the number of water pumps working during maximum water inrush, and the maximum water inrush working time.

[0021] The formulas that need to be programmed into S2 are: In the formula involving S2, Qe Rated flow rate of water pump, H e Rated head of the pump, rated efficiency of the pump, N e The power of the primary motor, N dj Calculated motor power, n1 the number of pumps working during normal water inflow, n2 the number of pumps working during maximum water inflow, T zh Pump working time during normal water inflow, T max Pump operating time at maximum water inflow.

[0022] Considering the practical significance of the input parameters, the program is set to limit the range of the relevant parameters of S2 input, that is, In S2, if any one of the parameters of the initially selected water pump and motor does not meet the relevant provisions of the safety regulations, reselect the relevant parameters of the water pump and motor and repeat the calculation and verification of S2; if the parameters of the initially selected water pump and motor both meet the relevant provisions of the safety regulations, continue to execute S3.

[0023] In the S3, the specifications of the drainage pipe are preliminarily selected, and relevant parameters are input, including: the economic flow rate of the drainage pipe, the selected pipe inner diameter, and the pipe wall thickness. Click the "Calculate Pipeline Parameters" button to check whether the selected drainage pipe is reasonable. If the specifications of the preliminarily selected drainage pipe are unreasonable, reselect the specifications of the drainage pipe. If the specifications of the preliminarily selected drainage pipe are reasonable, execute S4. After clicking the "Calculate Pipeline Parameters" button, the output parameters include: the minimum inner diameter of the drainage pipe, the minimum wall thickness, whether the pipe meets the requirements, the normal drainage flow rate, and the maximum drainage flow rate.

[0024] The formulas that need to be programmed into S3 are: In the formulas involved in S3, d p Drain pipe inner diameter, V jj Economic flow rate of drainage pipe, Drain pipe wall thickness, d n Pre-select the inner diameter of the drain pipe, Allowable stress, P d The lowest pressure in the pipeline, Additional pipe thickness, v pzh Normal drainage flow rate, v pmax The maximum drainage flow rate, the calculation formula in S3 is only applicable to the drainage pipe made of steel pipe or cast iron pipe. If other pipe materials are changed, the formula needs to be adjusted.

[0025] Considering the practical significance of the input parameters, the program is set to limit the range of the relevant parameters of S3 input, that is, In S3, if the initially selected drainage pipe does not meet the requirements, the specifications of the drainage pipe are reselected and S2 is repeated for calculation and verification; if the initially selected drainage pipe meets the requirements, S4 is continued.

[0026] In the calculation of pipe head loss in S4, relevant parameters affecting pipe loss of the drainage system are input, including: pipe length, 45-degree elbow, 90-degree elbow, equal-diameter tee, reducing tee, gate valve, check valve, click the "Calculate Pipe Loss" button, calculate pipe loss related parameters and verify whether the drainage equipment selection after calculating the pipe loss meets the requirements. If the pump head does not meet the requirements after calculating the pipe loss, return to S2, reselect the pump and motor, and then perform the above steps in sequence. If the pump head meets the requirements after calculating the pipe loss, continue to execute S5. After clicking the "Calculate Pipe Loss" button, the output parameters include: along-the-way resistance coefficient, along-the-way loss, local loss, required total head, whether the pump head meets the requirements after calculating the pipe loss, R1 (pipe resistance coefficient considering that the cross-sectional area of ​​the drainage pipe is reduced by 10% due to silting of the inner diameter), and R2 (pipe resistance coefficient without considering silting of the inner wall of the drainage pipe).

[0027] The formulas that need to be included in S4 are: In the formulas involved in S4, λ is the drag coefficient along the way, h is y Resistance loss along the way, h ju Local losses, The local drag coefficient and H z The total head required by the pump, K1 is the coefficient of resistance increase due to siltation on the inner wall of the drainage pipe, R1 and R2 are the pipe resistance coefficients that take into account (or do not take into account) siltation on the inner wall of the drainage pipe, respectively. Formula (16) is the expression of the actual operating curve of the pump.

[0028] Taking into account the practical significance of the input parameters, the program is set to limit the range of the relevant parameters input in S4, that is, L∈(0,∞), and the number of components should be a natural number. In S4, if the water pump head does not meet the requirements after calculating the pipe loss, return to S2, reselect the water pump and motor, and then execute the above S in sequence; if the water pump head meets the requirements after calculating the pipe loss, continue to execute S5.

[0029] Click the "Draw Pump Operating Curve" button in S5 to draw the operating curve of the pump according to formula (16), including: the operating curve considering that the cross-sectional area of ​​the drainage pipe is reduced by 10% due to the silting of the inner diameter, and the operating curve not considering the silting of the inner diameter of the drainage pipe. After executing S5, the horizontal and vertical coordinates of the operating curve can be appropriately adjusted according to the actual situation. After checking that S1~S5 are correct, it is judged whether the water pump is in the high-efficiency operation area according to the performance curve of the water pump equipment during actual operation. If it is not in the high-efficiency operation area, return to S3 or S4, adjust the pipeline characteristics of the drainage system (appropriately change the drainage pipe diameter, replace the configuration of components that cause large pipe damage, consider changing the type of pipeline material, etc.), and then execute the above steps in sequence. If it is in the high-efficiency operation area, continue to execute S6.

[0030] The data in S6 is saved. Click the "Save" button to save the results of the above design calculation and selection. You can choose the location to save the data and name the corresponding file name. The saved data can be opened and viewed at any time. After saving the data, execute S7.

[0031] To exit the program in S7, click the "Exit" button, a "Confirm Close" dialog box pops up, and click "YES" to exit completely, completing the entire design program.

[0032] Specific implementation case process: A mine drainage system design method and system that integrates the calculation, selection and verification processes, such as Figure 1 , Figure 2 , Figure 3 As shown in the figure, the implementation process of the specific case is as follows: A mine uses a single-stage drainage system. The water pump room elevation is 950m. The water is drained to the surface high-level water pool. The surface high-level water pool elevation is 1250m. The drainage pipe is laid along the auxiliary inclined shaft. According to geological professional prediction, the normal water inflow of the mine is 14488m / d, and the maximum water inflow is 28960m / d. The design parameters of the drainage system are shown in Table 1: Table 1 Basic parameters related to the design of drainage system of an iron mine

[0033] Execute S1, input relevant basic parameters, click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis; according to the pre-selected water pump basis parameters calculated by S1, preliminarily select the water pump and motor, and their relevant parameters are shown in Table 2: Table 2 Basic parameters of the primary pump motor

[0034] Execute S2, input relevant parameters, and click the "Check Drainage Capacity" button. The calculation results show that the pre-selected pump and motor are initially reasonable. The specification of the drainage pipe selected is 426×10mm. Two pipes are laid, one for use and one for backup. One pipe is used during normal water gushing, and both pipes are used for drainage at the same time during the maximum water gushing.

[0035] Execute S3, input the relevant parameters of the pre-selected drainage pipe, click the "Check Drainage Capacity" button, and the calculation results show that the pre-selected drainage pipe preliminarily meets the requirements; Consider the configuration of on-site pipe fittings, count the length of pipeline laying and the number of related parts, input relevant parameters, execute S4, click the "Calculate Pipe Loss" button, and according to the calculation results, it can be seen that the pump head after calculating the pipe loss meets the requirements; Execute S5, click the "Draw Pump Operating Curve" button to draw the actual operating curve of the pump. Combined with the performance curve of the selected pump, find the operating point when the pump is actually running. After comparison, it is determined that the pump is actually in the high-efficiency operating area. There is no need to adjust the pipeline characteristics of the drainage system. The pump runs stably, uses electricity economically, and the selection is reasonable. Execute S6 and click the "Save" button to save the above design calculation and selection results; Execute S7 and click the "Exit" button to exit the program and complete the design calculation and verification process of the entire drainage system.

[0036] Compared with the related art, the mine drainage system design method provided by the present invention which integrates calculation, selection and verification has the following beneficial effects: The present invention provides a mine drainage system design method that integrates calculation, selection and verification. This method realizes the design, calculation and verification process of an "end-to-end" "digitalized" mine drainage system. The principle is clear, the calculation and verification process is simplified, the selection method is scientific, the system operation is simple, the selection efficiency is improved, and the professional knowledge reserve capacity required for the calculation and verification of the mine drainage system by relevant personnel is reduced, providing new ideas for the design, selection and calculation of relevant industry personnel.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mine drainage system design method integrating calculation, selection and verification, characterized in that: The following steps are involved: S1. Double-click to open the drainage system design program, input the relevant basic parameters of the mine drainage system into the system, click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis; S2. Select the water pump and motor based on the relevant parameters of the water pump selection, and enter the relevant parameters. Click the "Calculate Drainage Capacity" button to verify whether the drainage capacity of the selected water pump and motor meets the relevant provisions of the safety regulations; S3. Input the diameter and wall thickness of the preliminarily selected drainage pipe, click the "Calculate Pipeline Parameters" button to check whether the selected drainage pipe is reasonable; S4. Input the relevant parameters of the drainage system and click the "Calculate Pipe Loss" button to obtain the relevant pipe loss calculation results of the drainage system. After calculating the pipe loss, determine whether the initially selected water pump meets the requirements; S5. Click the "Draw Pump Operating Condition Curve" button to draw the actual operating condition curve of the pump to determine whether the pump is in the high-efficiency operating area during actual operation; S6. Click the "Save" button to save the above design calculation and selection results; S7. Click the "Exit" button to exit the program and complete the design of the drainage system.

2. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: After double-clicking to open the drainage system design program in S1, the basic parameters related to the mine drainage system that need to be input include: normal water inflow, maximum water inflow, pump room elevation, drainage pipe wellhead elevation, and head loss coefficient. Click the "Calculate Selection Basis" button to calculate the relevant parameters of the water pump selection basis, including: drainage geometry height, normal water inflow drainage capacity, maximum water inflow drainage capacity, and the head of the preliminary selected water pump.

3. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: In S2, according to the selection basis in S1, the water pump and the motor are preliminarily selected and relevant parameters are input, including: rated flow, rated head, water pump efficiency, motor power, and the "Verify Drainage Capacity" button is clicked to verify whether the drainage capacity of the selected water pump and motor meets the relevant provisions of the safety regulations. If any parameter of the preliminarily selected water pump and motor does not meet the relevant provisions of the safety regulations, the water pump and motor models are reselected, and S2 is repeated until the requirements are met. If the parameters of the preliminarily selected water pump and motor meet the relevant provisions of the safety regulations, S3 is executed. After clicking the "Verify Drainage Capacity" button, the output parameters include: motor power, whether the motor meets the requirements, whether the head meets the requirements, the number of water pumps working during normal water inrush, the working time during normal water inrush, the number of water pumps working during maximum water inrush, and the maximum water inrush working time.

4. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: In the S3, the specifications of the drainage pipe are preliminarily selected, and relevant parameters are input, including: the economic flow rate of the drainage pipe, the selected pipe inner diameter, and the pipe wall thickness. Click the "Calculate Pipeline Parameters" button to check whether the selected drainage pipe is reasonable. If the specifications of the preliminarily selected drainage pipe are unreasonable, reselect the specifications of the drainage pipe. If the specifications of the preliminarily selected drainage pipe are reasonable, execute S4. After clicking the "Calculate Pipeline Parameters" button, the output parameters include: the minimum inner diameter of the drainage pipe, the minimum wall thickness, whether the pipe meets the requirements, the normal drainage flow rate, and the maximum drainage flow rate.

5. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: In the calculation of pipe head loss in S4, relevant parameters affecting pipe loss of drainage system are input, including: pipe length, 45-degree elbow, 90-degree elbow, equal-diameter tee, reducing tee, gate valve, check valve, click the "Calculate pipe loss" button, calculate pipe loss related parameters and verify whether the drainage equipment selection after calculating pipe loss meets the requirements. If the pump head does not meet the requirements after calculating pipe loss, return to S2, reselect the pump and motor, and then perform the above steps in sequence. If the pump head meets the requirements after calculating pipe loss, continue to execute S5. After clicking the "Calculate pipe loss" button, the output parameters include: along-the-way resistance coefficient, along-the-way loss, local loss, required total head, whether the pump head meets the requirements after calculating pipe loss, R1 and R2.

6. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: In the drawing of the actual working condition curve of the water pump in S5, click the "Draw Water Pump Working Condition Curve" button to draw the actual working condition curve of the water pump. According to the performance curve of the water pump equipment, it is judged whether the water pump is in the high-efficiency operation area during actual operation. If it is not in the high-efficiency operation area, return to S3 or S4, adjust the pipeline characteristics of the drainage system, and then perform the above steps in sequence. If it is in the high-efficiency operation area, continue to execute S6, and output the "Water Pump Working Condition Curve" as: a water pump head-flow diagram considering that the cross-sectional area of ​​the drainage pipe is reduced by 10% due to silting of the inner diameter, and a water pump head-flow diagram not considering silting of the inner wall of the drainage pipe.

7. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: The data in S6 is saved. Click the "Save" button to save the results of the above design calculation and selection. You can choose the location to save the data and name the corresponding file name. The saved data can be opened and viewed at any time. After saving the data, execute S7.

8. The mine drainage system design method integrating calculation, selection and verification according to claim 1 is characterized in that: To exit the program in S7, click the "Exit" button, a "Confirm Close" dialog box will pop up, and click "YES" to exit completely, completing the entire design program.

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