Method and device for measuring the lateral shrinkage coefficient of a special-shaped isolated pier for a practical weir

Abstract

This application relates to the technical field of evaluating the discharge capacity of a practical weir and discloses a method and apparatus for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir. The method includes the steps of obtaining test data for a dam's overflow weir, conducting a model test based on the test data to determine fitting coefficients, obtaining parameters for the special-shaped isolated pier of the practical weir, determining a lateral shrinkage correction coefficient for the special-shaped isolated pier based on the parameters of the special-shaped isolated pier of the practical weir and the fitting coefficients, and calculating a comprehensive lateral shrinkage coefficient for the special-shaped isolated pier of the practical weir based on the parameters of the special-shaped isolated pier of the practical weir and the lateral shrinkage correction coefficient for the special-shaped isolated pier. The comprehensive lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir is used to evaluate the discharge capacity of a practical weir with a special-shaped isolated pier. This application enables accurate measurement of the calculated flow coefficient of a practical weir with a special-shaped isolated pier, laying a foundation for evaluating the discharge capacity of a practical weir with a special-shaped isolated pier.

Description

[Technical Field]

[0001] The present application relates to the technical field of evaluating the discharge capacity of a practical weir, and more particularly to a method and device for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir. [Background technology]

[0002] Due to the impact of global climate change, significant changes have occurred in the inflow conditions of many old dams. These changes, primarily reflected in a significant increase in dam peak discharges, pose challenges to the operation and management of many old dams. To address these challenges, old dams must reassess the discharge capacity of their traditional discharge structures, especially under high-water conditions, such as above the design flood level.

[0003] The gate piers and end piers of some old dams' overflow weirs are special-shaped isolated piers, and determining the lateral contraction coefficient of such piers is a key parameter for evaluating the discharge capacity.When evaluating the discharge capacity of a practical weir with special-shaped isolated piers, it is not possible to directly determine the lateral contraction coefficient of the special-shaped isolated piers based on the graphs provided in the specifications, and there is no applicable theoretical or empirical method for calculating the lateral contraction coefficient.As a result, it is difficult to calculate the discharge coefficient of a practical weir with special-shaped isolated piers, and it is also difficult to evaluate the discharge capacity of a practical weir with special-shaped isolated piers. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, the present application provides a method and device for measuring the lateral shrinkage coefficient of an irregularly shaped isolated pier of a practical weir, thereby solving the problem that it is not possible to directly determine the lateral shrinkage coefficient of an irregularly shaped isolated pier, making it difficult to calculate the flow coefficient of a practical weir with an irregularly shaped isolated pier, and making it difficult to evaluate its discharge capacity. [Means for solving the problem]

[0005] In a first aspect, the present application provides a method for manufacturing a pharmaceutical composition comprising: obtaining test data of the dam's overflow weir, and conducting a model test based on the test data of the dam's overflow weir to determine fitting coefficients; obtaining parameters of the irregular isolation pier of the practical weir, and determining a lateral shrinkage correction coefficient of the irregular isolation pier based on the parameters of the irregular isolation pier of the practical weir and the fitting coefficient; A method for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir is provided, which includes a step of calculating a total lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir based on parameters of the special-shaped isolated pier of the practical weir and a lateral shrinkage correction coefficient of the special-shaped isolated pier, where the total lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir is used to evaluate the water discharge capacity of the practical weir with the special-shaped isolated pier.

[0006] The method for measuring the lateral shrinkage coefficient of the irregular isolated pier of a practical weir in this embodiment calculates the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir based on the parameters of the irregular isolated pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolated pier, thereby realizing accurate measurement of the calculated flow coefficient of the practical weir with irregular isolated piers, making the lateral shrinkage coefficient of the irregular isolated pier of the practical weir more consistent with the actual scene of the practical weir, and laying the foundation for evaluating the water discharge capacity of the practical weir with irregular isolated piers.

[0007] In an alternative embodiment, the step of determining a lateral shrinkage correction factor for the profiled isolation pier based on the parameters and fitting coefficients of the profiled isolation pier of the operational weir comprises: determining the weir head, the design head of the working weir, the width of the weir hole, the number of the weir hole, the horizontal length of the special-shaped isolation pier, the end pier reduction coefficient, and the intermediate pier reduction coefficient based on the parameters of the special-shaped isolation pier of the working weir; determining a theoretical discharge of the operational weir without taking into account the action of the deformed isolation pier based on the weir head, the design head of the operational weir, the width of the weir hole, and the number of the weir hole; determining the measured discharge of the operational weir with the special-shaped isolation piers based on the weir head, the design head of the operational weir, the width of the weir hole, the number of weir holes, the horizontal length of the special-shaped isolation piers, the end pier reduction coefficient, the intermediate pier reduction coefficient, and the fitting coefficient; and determining a lateral shrinkage correction coefficient for the irregular isolation pier based on the theoretical flow rate of the practical weir not taking into account the action of the irregular isolation pier and the measured flow rate of the practical weir with the irregular isolation pier.

[0008] The method for measuring the lateral shrinkage coefficient of the irregular-shaped isolated pier of a practical weir in this embodiment determines the lateral shrinkage correction coefficient of the irregular-shaped isolated pier based on the theoretical flow rate of the practical weir without considering the effect of the irregular-shaped isolated pier and the measured flow rate of the practical weir with the irregular-shaped isolated pier, comprehensively considering the shrinkage effect of the irregular-shaped isolated pier, making the lateral shrinkage correction coefficient of the irregular-shaped isolated pier more accurate and laying the foundation for calculating the comprehensive lateral shrinkage coefficient of the irregular-shaped isolated pier of a practical weir.

[0009] In an optional embodiment, the step of calculating the overall lateral shrinkage coefficient of the irregular isolation pier of the practical weir based on the parameters of the irregular isolation pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation pier includes: The method includes a step of calculating the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir based on the weir head, the reduction coefficient of the end piers, the reduction coefficient of the intermediate piers, the width of the weir hole, the number of weir holes, and the lateral shrinkage correction coefficient of the irregular isolated piers, and the calculation formula for the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir is as follows: JPEG2026501479000002.jpg15144 In the above formula, σ f is the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir, C is the lateral shrinkage correction coefficient of the deformed isolated pier, ε k is the reduction coefficient of the end pier, ε0 is the reduction coefficient of the intermediate pier, H is the weir head, n is the number of weir holes, and b is the width of the weir hole.

[0010] In an alternative embodiment, the step of conducting a model test based on test data of the dam's overflow weir and determining fitting coefficients comprises: constructing a hydraulic model of the overflow dam based on test data of the dam's overflow weir; utilizing a hydraulic model of the overflow dam to test the overflow dam head and letdown flow rate under various operating conditions to generate head and letdown flow curve data; and determining fitting coefficients based on the head and discharge curve data.

[0011] The method for measuring the lateral contraction coefficient of the irregular-shaped isolated pier of a practical weir in this embodiment uses a hydraulic model of the overflow dam to test the overflow dam head and letdown flow rate under various working conditions, generates curve data of the head and discharge, and then determines the fitting coefficient based on the curve data of the head and discharge, thereby achieving accurate fitting of the fitting coefficient and laying the foundation for later calculating the overall lateral contraction coefficient of the irregular-shaped isolated pier of a practical weir.

[0012] In an alternative embodiment, The method further includes verifying the overall lateral shrinkage coefficient of the irregular isolation pier of the practical weir and generating a verification result of the lateral shrinkage coefficient of the irregular isolation pier of the practical weir.

[0013] In the method for measuring the lateral shrinkage coefficient of the irregular isolated pier of a practical weir according to this embodiment, the method for calculating the overall lateral shrinkage coefficient of the irregular isolated pier of a practical weir by verifying the overall lateral shrinkage coefficient of the irregular isolated pier of a practical weir meets the actual construction needs, lays a foundation for later evaluation of the water discharge capacity of practical weirs with irregular isolated piers, and provides a scientific basis for the safety tolerance of practical weirs with irregular isolated piers.

[0014] In an optional embodiment, the step of verifying the overall lateral contraction coefficient of the special-shaped isolation pier of the practical weir and generating a verification result of the lateral contraction coefficient of the special-shaped isolation pier of the practical weir includes: Obtaining a mechanical model of the practical weir water with a special-shaped isolation pier, and conducting a model test using the mechanical model of the practical weir water with a special-shaped isolation pier to generate a measured lateral shrinkage coefficient of the special-shaped isolation pier of the practical weir; calculating a relative error based on the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir and the measured lateral shrinkage coefficient of the deformed isolated pier of the practical weir; and comparing the relative error with a preset threshold value, and determining a verification result of the lateral contraction coefficient of the contoured isolation pier of the practical weir based on the comparison result.

[0015] The method for measuring the lateral shrinkage coefficient of the irregular isolated pier of a practical weir in this embodiment uses a mechanical model of the water in a practical weir with irregular isolated piers to conduct a model test, and then uses the relative error between the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir and the measured lateral shrinkage coefficient of the irregular isolated pier of the practical weir to realize the verification of the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir, ensure the calculation accuracy of the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir, and provide a scientific basis for the design, engineering, operation, and management of practical weirs with irregular isolated piers.

[0016] In an alternative embodiment, the hydraulic model of a working weir with a special isolation pier comprises an electromagnetic flow meter, a dam, and a working weir with a special isolation pier provided with an inlet channel.

[0017] In a second aspect, the present application provides a method for manufacturing a semiconductor device comprising: a test module for obtaining test data of the dam's overflow weir, conducting a model test based on the test data of the dam's overflow weir, and determining a fitting coefficient; a determination module for obtaining parameters of the irregular isolation pier of the practical weir, and determining a lateral shrinkage correction coefficient of the irregular isolation pier based on the parameters of the irregular isolation pier of the practical weir and the fitting coefficient; A device for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir is provided, which includes a calculation module for calculating the overall lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir based on the parameters of the special-shaped isolated pier of the practical weir and the lateral shrinkage correction coefficient of the special-shaped isolated pier, where the overall lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir is used to evaluate the water discharge capacity of the practical weir with the special-shaped isolated pier.

[0018] In a third aspect, the present application provides a computer apparatus including a memory and a processor, the memory and the processor being communicatively connected to each other, computer instructions stored in the memory, the processor executing the computer instructions to perform the method for measuring the lateral contraction coefficient of a profiled isolated pier of a practical weir according to the first aspect above or any corresponding embodiment thereof.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute a method for measuring the lateral contraction coefficient of a profiled isolation pier of a practical weir according to the first aspect above or any corresponding embodiment thereof.

[0020] In order to more clearly describe the specific embodiments of the present application or the technical solutions of the prior art, the following will briefly describe the drawings necessary for describing the specific embodiments or the prior art. Of course, the drawings described below are merely examples of the embodiments of the present application, and those skilled in the art can further obtain other drawings based on these drawings without any creative efforts. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic flowchart of a method for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir according to an embodiment of the present application. [Figure 2] 10 is a schematic flowchart of a method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of another practical weir according to an embodiment of the present application. [Figure 3] 1 is a schematic flowchart of a method for measuring the lateral shrinkage coefficient of a specially shaped isolated pier of a practical weir according to an embodiment of the present application. [Figure 4] 10 is a schematic flowchart of a method for measuring the lateral shrinkage coefficient of a profiled isolation pier of a practical weir according to an embodiment of the present application. [Figure 5] FIG. 1 is a schematic diagram of a hydraulic model of a practical weir with specially shaped isolation piers according to an embodiment of the present application. [Figure 6] 1 is a schematic diagram of a stylus-type water level meter according to an embodiment of the present application. [Figure 7] 10 is a flowchart for calculating the lateral shrinkage coefficient of a deformed isolated pier of a practical weir according to an embodiment of the present application. [Figure 8] 1 is a structural block of a device for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir according to an embodiment of the present application. [Figure 9] 1 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to clarify the objectives, technical solutions and advantages of the embodiments of the present application, the technical solutions of the embodiments of the present application will be described below clearly and completely with reference to the drawings of the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Any other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without any inventive efforts fall within the scope of protection of the present application.

[0023] Due to differences in old designs and specifications, the gate piers and end piers installed on the overflow weirs of some old dams are not Type 2, Type 2A, Type 2B or Type 2C as specified in specifications such as the "Hydraulic Calculation Manual," but are deformed isolated piers. Due to differences in the shapes of deformed isolated piers and the various types of isolated piers specified in the specifications, the resistance rules for deformed isolated piers to the water flow through the weir differ from those specified in the specifications, and the effect on the discharge coefficient of the weir flow also differs.

[0024] Determining the discharge coefficient of a practical weir with such irregular isolated piers is a key parameter for evaluating its discharge capacity. When evaluating the discharge capacity of a practical weir with irregular isolated piers, it is not possible to directly determine the overall discharge coefficient of such a practical weir based on the graph provided in the specifications. Currently, there is no highly accurate theoretical or empirical method for evaluating the discharge capacity or calculating the discharge coefficient of a practical weir with irregular isolated piers.

[0025] Therefore, the embodiments of the present application provide a method for measuring the lateral contraction coefficient of a special-shaped isolated pier of a practical weir, which is applicable to mobile terminals, such as mobile phones, tablet computers, etc. The embodiments of the present application verify the overall flow coefficient of a practical weir with a special-shaped isolated pier derived by model tests, and further realize the evaluation of the discharge capacity of a practical weir with a special-shaped isolated pier.

[0026] According to an embodiment of the present application, there is provided a method for measuring the lateral contraction coefficient of a profiled isolation pier of a practical weir, and in the embodiment, it is noted that the steps shown in the flowcharts of the drawings may be performed in a computer system as a set of computer-executable instructions, and that although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order.

[0027] In this embodiment, a method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir is provided, which can be used with the above-mentioned mobile terminals, such as mobile phones and tablet computers. Figure 1 is a flowchart of the method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir according to this embodiment. As shown in Figure 1, the process includes the following steps S101 to S103.

[0028] Step S101: Obtain test data of the dam's overflow weir, and perform a model test based on the test data of the dam's overflow weir to determine the fitting coefficients.

[0029] Step S102: Obtain the parameters of the irregular isolation pier of the practical weir, and determine the lateral shrinkage correction coefficient of the irregular isolation pier based on the parameters of the irregular isolation pier of the practical weir and the fitting coefficient.

[0030] Step S103: Calculate the overall lateral shrinkage coefficient of the irregular isolation pier of the practical weir based on the parameters of the irregular isolation pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation pier, and the overall lateral shrinkage coefficient of the irregular isolation pier of the practical weir is used to evaluate the water discharge capacity of the practical weir with the irregular isolation pier.

[0031] Specifically, the overall lateral shrinkage coefficient of the irregular isolated piers of a practical weir is calculated based on the weir head, the reduction coefficient of the end piers, the reduction coefficient of the intermediate piers, the width of the weir hole, the number of weir holes, and the lateral shrinkage correction coefficient of the irregular isolated piers, and the calculation formula for the overall lateral shrinkage coefficient of the irregular isolated piers of a practical weir is as follows: JPEG2026501479000003.jpg15144 In the above formula, σ fis the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir, C is the lateral shrinkage correction coefficient of the deformed isolated pier, ε k is the reduction coefficient of the end pier, ε0 is the reduction coefficient of the intermediate pier, H is the weir head, n is the number of weir holes, and b is the width of the weir hole.

[0032] The method for measuring the lateral shrinkage coefficient of the irregular isolated pier of a practical weir in this embodiment calculates the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir based on the parameters of the irregular isolated pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolated pier, thereby realizing accurate measurement of the calculated flow coefficient of the practical weir with irregular isolated piers, making the lateral shrinkage coefficient of the irregular isolated pier of the practical weir more consistent with the actual situation of the practical weir, and laying a foundation for evaluating the discharge capacity of the practical weir with irregular isolated piers.

[0033] In this embodiment, a method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir is provided, which can be used with the above-mentioned mobile terminals, such as mobile phones and tablet computers. Figure 2 is a flowchart of the method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir according to this embodiment. As shown in Figure 2, the process includes the following steps S201 to S203.

[0034] Step S201: Obtain test data of the dam's overflow weir, and perform a model test based on the test data of the dam's overflow weir to determine the fitting coefficients. For details, refer to step S101 in the embodiment shown in Figure 1, and the description will be omitted here.

[0035] Step S202: Obtain the parameters of the irregular isolation pier of the practical weir, and determine the lateral shrinkage correction coefficient of the irregular isolation pier based on the parameters of the irregular isolation pier of the practical weir and the fitting coefficient.

[0036] Specifically, the above step S202 includes steps S2021 and S2022.

[0037] Step S2021: Based on the parameters of the special-shaped isolation pier of the practical weir, determine the weir head, the design head of the practical weir, the width of the weir hole, the number of weir holes, the horizontal length of the special-shaped isolation pier, the end pier reduction coefficient, and the intermediate pier reduction coefficient.

[0038] Step S2022: Determine the theoretical flow rate of the practical weir without considering the action of the deformed isolation pier based on the weir head, the design head of the practical weir, the width of the weir hole, and the number of weir holes.

[0039] Specifically, the theoretical flow rate Q2 (unit: m 3 / s) is calculated as follows: JPEG2026501479000004.jpg17144 In the above formula, H is the weir head, and its unit is meters. d is the design head of the practical weir, n is the number of weir holes, b is the hole width, and g is the gravitational acceleration.

[0040] Step S2023: Determine the measured flow rate of the practical weir with the special-shaped isolation pier based on the weir head, the design head of the practical weir, the width of the weir hole, the number of weir holes, the horizontal length of the special-shaped isolation pier, the end pier reduction coefficient, the intermediate pier reduction coefficient and the fitting coefficient.

[0041] Specifically, the measured flow rate Q1 of a practical weir with an irregular isolated pier indicates the measured flow rate when the practical weir with an irregular isolated pier is operating at a certain water level, and the measured flow rate Q1 of a practical weir with an irregular isolated pier (unit: m 3 / s) is calculated as follows: JPEG2026501479000005.jpg14167 In the above formula, L represents the horizontal length of the deformed isolation pier corresponding to the weir head, and its unit is m. a1, a2, and a3 represent fitting coefficients. Based on the model test, the values ​​of a1 and a2 are 0.6517 and 0.7969, respectively.

[0042] Alternatively, the formula for calculating the horizontal length L of the deformed isolation pier corresponding to the weir head H is as follows: JPEG2026501479000006.jpg13134 Here, ctan denotes the cotangent function.

[0043] Step S2024: Determine the lateral shrinkage correction coefficient for the irregular isolation pier based on the theoretical flow rate of the practical weir that does not take into account the action of the irregular isolation pier and the measured flow rate of the practical weir with the irregular isolation pier.

[0044] Specifically, based on Francis's formula for calculating the lateral shrinkage coefficient, the effect of the irregular isolated pier is considered using a correction coefficient C for the lateral shrinkage coefficient. Here, since the shrinkage effect of the irregular isolated pier is simultaneously affected by the weir head H and the horizontal length L of the irregular isolated pier, the functional relationship of the correction coefficient and the ratio of the weir head to the horizontal length of the irregular isolated pier are expressed as a linear relationship as follows: JPEG2026501479000007.jpg26140

[0045] Step S203: Calculate the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir based on the parameters of the irregular isolation piers of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation piers, and the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir is used to evaluate the water discharge capacity of the practical weir with the irregular isolation piers. For details, refer to step S103 in the embodiment shown in Figure 1, and the explanation will be omitted here.

[0046] In step S203, the calculated flow coefficient of the practical weir with the special-shaped isolated pier is compared with the measured flow coefficient of the practical weir with the special-shaped isolated pier, and the overall flow coefficient of the practical weir with the special-shaped isolated pier is determined based on the comparison result. For details, refer to step S103 in the embodiment shown in Figure 1, and the explanation will be omitted here.

[0047] The method for measuring the lateral shrinkage coefficient of the irregular-shaped isolated pier of a practical weir in this embodiment determines the lateral shrinkage correction coefficient of the irregular-shaped isolated pier based on the theoretical flow rate of the practical weir without considering the effect of the irregular-shaped isolated pier and the measured flow rate of the practical weir with the irregular-shaped isolated pier, comprehensively considering the shrinkage effect of the irregular-shaped isolated pier, making the lateral shrinkage correction coefficient of the irregular-shaped isolated pier more accurate and laying the foundation for calculating the comprehensive lateral shrinkage coefficient of the irregular-shaped isolated pier of a practical weir.

[0048] In this embodiment, a method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir is provided, which can be used with the above-mentioned mobile terminals, such as mobile phones and tablet computers. Figure 3 is a flowchart of the method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir according to this embodiment. As shown in Figure 3, the process includes the following steps S301 to S303.

[0049] Step S301: Obtain test data of the dam's overflow weir, and perform a model test based on the test data of the dam's overflow weir to determine the fitting coefficients.

[0050] Specifically, the above step S301 includes steps S3011 to S3013.

[0051] Step S3011: Construct a hydraulic model of the overflow dam based on the test data of the overflow weir of the dam.

[0052] Step S3012: Using the hydraulic model of the overflow dam, test the overflow dam head and letdown flow rate under various working conditions, and generate head and letdown flow rate curve data.

[0053] Step S3013: Determine the fitting coefficients based on the curve data of the head and discharge.

[0054] Specifically, the lateral shrinkage coefficient corresponding to different weir heads and discharge volumes is calculated using formula (1) for calculating the overall lateral shrinkage coefficient of the deformed isolated pier of a practical weir, and the fitting coefficient is determined by curve fitting based on the curve data of the head and discharge volume.

[0055] Step S302: Obtain the parameters of the special-shaped isolation pier of the practical weir, and determine the lateral shrinkage correction coefficient of the special-shaped isolation pier based on the parameters of the special-shaped isolation pier of the practical weir and the fitting coefficient. For details, refer to step S202 in the embodiment shown in Figure 2, and the explanation will be omitted here.

[0056] Step S303: Calculate the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir based on the parameters of the irregular isolation piers of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation piers, and the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir is used to evaluate the discharge capacity of the practical weir with the irregular isolation piers. For details, refer to step S203 in the embodiment shown in Figure 2, and the explanation will be omitted here.

[0057] The method for measuring the lateral contraction coefficient of the irregular-shaped isolated pier of a practical weir in this embodiment uses a hydraulic model of the overflow dam to test the overflow dam head and letdown flow rate under various working conditions, generates curve data of the head and discharge, and then determines the fitting coefficient based on the curve data of the head and discharge, thereby achieving accurate fitting of the fitting coefficient and laying the foundation for later calculating the overall lateral contraction coefficient of the irregular-shaped isolated pier of a practical weir.

[0058] In this embodiment, a method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir is provided, which can be used with the above-mentioned mobile terminals, such as mobile phones and tablet computers. Figure 4 is a flowchart of the method for measuring the lateral shrinkage coefficient of a special-shaped isolation pier of a practical weir according to this embodiment. As shown in Figure 4, the process includes the following steps S401 to S404.

[0059] Step S401: Obtain test data of the dam's overflow weir, and perform a model test based on the test data of the dam's overflow weir to determine the fitting coefficients. For details, refer to step S301 in the embodiment shown in Figure 3, and the description will be omitted here.

[0060] Step S402: Obtain the parameters of the special-shaped isolation pier of the practical weir, and determine the lateral shrinkage correction coefficient of the special-shaped isolation pier based on the parameters of the special-shaped isolation pier of the practical weir and the fitting coefficient. For details, refer to step S302 in the embodiment shown in Figure 3, and the description will be omitted here.

[0061] Step S403: Calculate the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir based on the parameters of the irregular isolation piers of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation piers, and the overall lateral shrinkage coefficient of the irregular isolation piers of the practical weir is used to evaluate the discharge capacity of the practical weir with the irregular isolation piers. For details, refer to step S302 in the embodiment shown in Figure 3, and the explanation will be omitted here.

[0062] Step S404: Verify the overall lateral shrinkage coefficient of the irregular-shaped isolated pier of the practical weir, and generate the verification result of the lateral shrinkage coefficient of the irregular-shaped isolated pier of the practical weir.

[0063] Specifically, the above step S404 includes step S4041.

[0064] Step S4041: Obtain a mechanical model of the practical weir water with a deformed isolation pier, and use the mechanical model of the practical weir water with a deformed isolation pier to conduct a model test and generate the measured lateral shrinkage coefficient of the deformed isolation pier of the practical weir.

[0065] Specifically, as shown in Fig. 5, the mechanical model of the practical weir water with a special-shaped isolation pier is composed of an electromagnetic flow meter, a dam, and a practical weir with a special-shaped isolation pier provided with an inlet channel. In Fig. 2, 1 indicates the dam area, 2 indicates the stylus-type water level meter, 3 indicates the special-shaped isolation pier, and 4 indicates the practical weir.

[0066] Optionally, as shown in Figure 6, a stylus water level meter is placed on the wall of the inlet channel 1.5 m in front of the practical weir (the prototype is 37.5 m), the measurement accuracy is 0.1 mm, the accuracy of the electromagnetic flow meter is 0.5%, the model of the practical weir with a special-shaped isolation pier is a normal model designed according to Froude's law, the model scale is 1:25, the model of the practical weir is supported by organic glass, the model construction error is ±0.1 mm, and the model assembly error is controlled to ±1 mm.

[0067] When selectively conducting a model test using the mechanical model of practical weir water with irregular isolation piers, the number of weir holes n is set to 1, b indicating the number of weir holes is set to 0.6 m, and various water levels are input into the mechanical model of practical weir water with irregular isolation piers, and the calculation formula for the measured lateral shrinkage coefficient σ of the irregular isolation pier of the practical weir is as follows: JPEG2026501479000008.jpg36137

[0068] Step S4042: Calculate the relative error based on the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir and the measured lateral shrinkage coefficient of the deformed isolated pier of the practical weir.

[0069] Step S4043: Compare the relative error with a preset threshold value, and determine the verification result of the lateral contraction coefficient of the deformed isolated pier of the practical weir based on the comparison result.

[0070] Specifically, if the preset threshold is 6% and the relative error is less than 6%, it indicates that the accuracy of the calculated flow coefficient of the comprehensive lateral contraction coefficient of the irregular isolated pier of the practical weir meets the requirements, and furthermore, the comprehensive lateral contraction coefficient of the irregular isolated pier of the practical weir is used to evaluate the discharge capacity of the practical weir with irregular isolated pier.

[0071] The method for measuring the lateral shrinkage coefficient of the irregular isolated piers of a practical weir in this embodiment uses a mechanical model of the water in a practical weir with irregular isolated piers to conduct a model test, and then verifies the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir using the relative error between the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir and the measured lateral shrinkage coefficient of the irregular isolated piers of the practical weir, ensuring the calculation accuracy of the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir and providing a scientific basis for the design, operation, and management of practical weirs with irregular isolated piers.

[0072] The following describes the specific steps of the method for measuring the lateral shrinkage coefficient of the profiled isolation pier of a practical weir through a specific example.

[0073] Example 1 As shown in Figure 7, the specific steps of the measurement method for the lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir are as follows: Step 1: Derive the calculation formula for the comprehensive lateral contraction coefficient of the deformed isolated pier of the practical weir. Step 2: Create a mechanical model of the practical weir water with special isolation piers. Step 3: Tests are conducted using a mechanical model of the practical weir water with a special-shaped isolation pier, and the measured lateral contraction coefficient of the practical weir with a special-shaped isolation pier is calculated. Step 4: Compare the overall lateral shrinkage coefficient of the practical weir with irregular isolated piers with the measured lateral shrinkage coefficient of the practical weir with irregular isolated piers to verify the calculation accuracy of the calculation formula for the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir, and compare the overall lateral shrinkage coefficient with the measured lateral shrinkage coefficient to obtain the relative error. The specific calculation results are shown in Table 1 below.

[0074] [Table 1]

[0075] As shown in Table 1 above, the model test verification results for the derived formula for the overall lateral shrinkage coefficient show that the overall lateral shrinkage coefficient σ f The relative errors of the calculated lateral shrinkage coefficient σ and the measured lateral shrinkage coefficient σ are both within 6%, which is within the allowable error range and can meet the actual construction needs. The above formula for calculating the overall lateral shrinkage coefficient of the irregular isolated piers of a practical weir provides a scientific basis for evaluating and calculating the discharge capacity of a practical weir with irregular isolated piers and for the safety acceptance of a practical weir with irregular isolated piers.

[0076] In Example 1 above, there is no mature, highly accurate formula for calculating the lateral shrinkage coefficient of a non-standard isolated pier in a practical weir, either theoretically or in industry standards. Therefore, this example provides a reliable and accurate calculation formula from the overall lateral shrinkage coefficient of a non-standard isolated pier in a practical weir, derived through verification of the measured lateral shrinkage coefficient. This solves the problem of calculating the lateral shrinkage coefficient of a non-standard isolated pier in a practical weir, providing a scientific basis for the discharge capacity of a practical weir with non-standard isolated piers and the design, operation, and management of practical weirs with non-standard isolated piers. Furthermore, verification of the derived calculation formula for the lateral shrinkage coefficient using actual measurements from model tests showed that the relative error between the calculated value and the measured value was within 6%, demonstrating relatively high accuracy and meeting the needs of practical design, operation, and management.

[0077] This example further provides a device for measuring the lateral contraction coefficient of a profiled isolation pier of a practical weir, which can be used to implement the above examples and alternative embodiments, and redundant explanations of the device will be omitted. As used below, the term "module" refers to a combination of software and / or hardware that implements a given function. While the device described in the following examples is preferably implemented in software, hardware or a combination of software and hardware implementations are also possible and anticipated.

[0078] This embodiment provides a measuring device for the lateral shrinkage coefficient of the special-shaped isolated pier of a practical weir. As shown in Figure 8, this measuring device: a test module 801 for obtaining test data of the dam's overflow weir, performing a model test based on the test data of the dam's overflow weir, and determining fitting coefficients; a determination module 802 for obtaining parameters of the irregular isolation pier of the practical weir, and determining a lateral shrinkage correction coefficient of the irregular isolation pier based on the parameters of the irregular isolation pier of the practical weir and the fitting coefficient; and a calculation module 803 for calculating the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir based on the parameters of the irregular isolated pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolated pier, where the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir is used to evaluate the water discharge capacity of the practical weir with the irregular isolated pier.

[0079] In some alternative embodiments, the determination module 802: a first determining unit for determining the weir head, the design head of the working weir, the width of the weir hole, the number of the weir hole, the horizontal length of the special-shaped isolation pier, the end pier reduction coefficient, and the intermediate pier reduction coefficient based on the parameters of the special-shaped isolation pier of the working weir; a second determining unit for determining the theoretical flow rate of the operational weir, not taking into account the action of the deformed isolation pier, based on the weir head, the design head of the operational weir, the width of the weir openings, and the number of weir openings; a third determining unit for determining the actual flow rate of the operational weir with the special isolation piers based on the weir head, the design head of the operational weir, the width of the weir hole, the number of weir holes, the horizontal length of the special isolation piers, the end pier reduction coefficient, the intermediate pier reduction coefficient, and the fitting coefficient; and a fourth determining unit for determining the lateral shrinkage correction coefficient of the irregular isolation pier based on the theoretical flow rate of the practical weir not taking into account the action of the irregular isolation pier and the measured flow rate of the practical weir with the irregular isolation pier.

[0080] In some optional embodiments, the calculation module 803 is specifically used to calculate the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir based on the weir head, the end pier reduction coefficient, the intermediate pier reduction coefficient, the width of the weir hole, the number of weir holes and the lateral shrinkage correction coefficient of the irregular isolated pier, and the calculation formula for the overall lateral shrinkage coefficient of the irregular isolated pier of the practical weir is as follows: JPEG2026501479000010.jpg1592 In the above formula, σ f is the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir, C is the lateral shrinkage correction coefficient of the deformed isolated pier, ε k is the reduction coefficient of the end pier, ε0 is the reduction coefficient of the intermediate pier, H is the weir head, n is the number of weir holes, and b is the width of the weir hole.

[0081] In some alternative embodiments, the test module 801 includes: a construction unit for constructing a hydraulic model of the overflow dam based on test data of the dam's overflow weir; A test unit for testing the overflow dam head and letdown flow rate under various operating conditions using a hydraulic model of the overflow dam to generate head and letdown flow curve data; and a fifth determining unit for determining fitting coefficients based on the head and discharge curve data.

[0082] In some alternative embodiments, The system further includes a verification module for verifying the overall lateral shrinkage coefficient of the irregular-shaped isolated pier of the practical weir and generating a verification result of the lateral shrinkage coefficient of the irregular-shaped isolated pier of the practical weir.

[0083] In some alternative embodiments, the verification module: a test unit for obtaining a mechanical model of the practical weir water with a special-shaped isolation pier, conducting a model test using the mechanical model of the practical weir water with a special-shaped isolation pier, and generating a measured lateral shrinkage coefficient of the special-shaped isolation pier of the practical weir; a calculation unit for calculating a relative error based on the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir and the measured lateral shrinkage coefficient of the deformed isolated pier of the practical weir; and a comparison unit for comparing the relative error with a preset threshold value and determining a verification result of the lateral contraction coefficient of the profiled isolation pier of the practical weir based on the comparison result.

[0084] In some alternative embodiments, in the test unit, the hydraulic model of the working weir with profiled isolation piers comprises an electromagnetic flow meter, a dam, and a working weir with profiled isolation piers provided with an inlet channel.

[0085] The further functional description of each module and unit above is the same as that of the corresponding embodiment above, and detailed description thereof will be omitted here.

[0086] The apparatus for measuring the lateral contraction coefficient of a profiled isolation pier of a practical weir in this example is shown in the form of a functional unit, where unit refers to an Application Specific Integrated Circuit (ASIC) circuit, a processor and memory executing one or more software or fixed programs, and / or other device capable of providing the above functionality.

[0087] An embodiment of the present application further provides a computerized device having a measuring device for the lateral contraction coefficient of the profiled isolation pier of a practical weir shown in FIG. 8 above.

[0088] Referring to FIG. 9, FIG. 9 is a structural diagram of a computer device according to an alternative embodiment of the present application. As shown in FIG. 9, the computer device includes one or more processors 10, a memory 20, and interfaces for connecting each component, including a high-speed interface and a low-speed interface. Each component may be communicatively connected to each other via different buses and mounted on a common motherboard, or may be mounted in other ways as needed. The processor processes instructions executed in the computer device, including instructions stored in or on a memory for displaying GUI graphic information on an external input / output device (e.g., a display device coupled to the interface). In some alternative embodiments, multiple processors and / or multiple buses may be used along with multiple memories, if necessary. Similarly, multiple computer devices may be connected, each performing a part of the required operations (e.g., as a server array, a set of blade servers, or a multiprocessor system). FIG. 9 uses one processor 10 as an example.

[0089] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0090] The memory 20 stores instructions that can be executed by the at least one processor 10, thereby causing the at least one processor 10 to perform the methods illustrated in the above embodiments.

[0091] The memory 20 may include a program storage area and a data storage area. The program storage area may store an operating system and / or application programs necessary for at least one function, and the data storage area may store data generated by use of the computer device. The memory 20 may also include high-speed random access memory and may further include non-transitory memory, such as at least one magnetic disk memory device, flash memory device, or other non-transitory solid-state memory device. In some alternative embodiments, the memory 20 may optionally include memory located remotely from the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0092] Memory 20 may include volatile memory, such as random access memory; memory may include non-volatile memory, such as flash memory, a hard disk, or a solid state drive; memory 20 may also include a combination of the above types of memory.

[0093] The computer device further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30, and the output device 40 can be connected by a bus or other methods, and FIG. 9 illustrates the connection by a bus.

[0094] The input device 30 can receive input numeric or character information and generate key signal inputs related to user settings and function control of the computing device, such as a touch screen, keypad, mouse, trackpad, touchpad, pointing stick, one or more mouse buttons, trackball, joystick, etc. The output device 40 can include a display device, auxiliary lighting devices (e.g., LEDs), tactile feedback devices (e.g., vibration motors), etc. The above display devices include, but are not limited to, liquid crystal displays, light-emitting diode displays, and plasma displays. In some alternative embodiments, the display device can be a touch screen.

[0095] The present embodiment further provides a computer-readable storage medium, and the methods according to the above-described embodiments of the present application may be implemented in hardware, firmware, or may be recorded on a storage medium, or may be implemented as computer code that is downloaded from a network, initially stored on a remote storage medium or a non-transitory machine-readable storage medium, and then stored on a local storage medium, thereby allowing the methods described herein to be stored and processed in software, such as a storage medium, using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium may be a magnetic disk, optical disk, read-only memory, random-access memory, flash memory, hard disk, solid-state drive, or the like. Optionally, the storage medium may further include a combination of the above types of memory. As will be understood, a computer, processor, microprocessor controller, or programmable hardware may include a storage component capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above-described embodiments.

[0096] Although the embodiments of the present application have been described with reference to the drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and all such modifications and variations are included in the scope defined by the appended claims.

Claims

1. A method for measuring the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir, comprising: obtaining test data of the dam's overflow weir, and conducting a model test based on the test data of the dam's overflow weir to determine fitting coefficients; obtaining parameters of a special-shaped isolation pier of a practical weir, and determining a lateral shrinkage correction coefficient of the special-shaped isolation pier based on the parameters of the special-shaped isolation pier of the practical weir and the fitting coefficient; and a step of calculating a total lateral shrinkage coefficient of the irregular isolation piers of the practical weir based on the parameters of the irregular isolation piers of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation piers, wherein the total lateral shrinkage coefficient of the irregular isolation piers of the practical weir is used to evaluate the water discharge capacity of the practical weir with the irregular isolation piers.

2. The step of determining a lateral shrinkage correction coefficient for the special-shaped isolation pier based on the parameters of the special-shaped isolation pier of the practical weir and the fitting coefficient includes: determining the weir head, the design head of the practical weir, the width of the weir hole, the number of weir holes, the horizontal length of the special-shaped isolation pier, the reduction coefficient of the end pier, and the reduction coefficient of the intermediate pier based on the parameters of the special-shaped isolation pier of the practical weir; determining a theoretical flow rate of the operational weir without taking into account the action of the special-shaped isolation pier based on the weir head, the design head of the operational weir, the width of the weir hole, and the number of the weir hole; determining the measured flow rate of the practical weir with the special-shaped isolation pier based on the weir head, the design head of the practical weir, the width of the weir hole, the number of the weir hole, the horizontal length of the special-shaped isolation pier, the end pier reduction coefficient, the intermediate pier reduction coefficient, and the fitting coefficient; The method according to claim 1, further comprising a step of determining a lateral shrinkage correction coefficient for the special-shaped isolation pier based on a theoretical flow rate of the practical weir that does not take into account the action of the special-shaped isolation pier and an actual measured flow rate of the practical weir with the special-shaped isolation pier.

3. The step of calculating the overall lateral shrinkage coefficient of the irregular isolation pier of the practical weir based on the parameters of the irregular isolation pier of the practical weir and the lateral shrinkage correction coefficient of the irregular isolation pier, The method includes a step of calculating a comprehensive lateral shrinkage coefficient of the irregular isolated piers of the practical weir based on the weir head, the end pier reduction coefficient, the intermediate pier reduction coefficient, the weir hole width, the number of weir holes, and the lateral shrinkage correction coefficient of the irregular isolated piers, and the calculation formula for the comprehensive lateral shrinkage coefficient of the irregular isolated piers of the practical weir is as follows: In the above formula, σ ｆ is the overall lateral shrinkage coefficient of the deformed isolated pier of the practical weir, C is the lateral shrinkage correction coefficient of the deformed isolated pier, ε ｋ is the reduction coefficient of the end pier, ε ０ 3. The method according to claim 2, wherein H is the weir head, n is the number of weir holes, and b is the width of the weir hole.

4. The step of performing a model test based on test data of the overflow weir of the dam and determining fitting coefficients includes: constructing a hydraulic model of the overflow dam based on test data of the overflow weir of the dam; using the hydraulic model of the overflow dam to test the overflow dam head and letdown flow rate under various operating conditions to generate head and letdown flow curve data; and determining the fitting coefficients based on the head and discharge curve data.

5. The method according to claim 1, further comprising the step of verifying the overall lateral contraction coefficient of the special-shaped isolation pier of the practical weir and generating a verification result of the lateral contraction coefficient of the special-shaped isolation pier of the practical weir.

6. The step of verifying the overall lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir and generating a verification result of the lateral shrinkage coefficient of the special-shaped isolated pier of the practical weir includes: Obtaining a mechanical model of the practical weir water with a special-shaped isolation pier, and conducting a model test using the mechanical model of the practical weir water with a special-shaped isolation pier to generate a measured lateral shrinkage coefficient of the special-shaped isolation pier of the practical weir; Calculating a relative error based on the overall lateral shrinkage coefficient of the deformed isolation pier of the practical weir and the measured lateral shrinkage coefficient of the deformed isolation pier of the practical weir; The method according to claim 5, further comprising the step of comparing the relative error with a preset threshold value and determining a verification result of the lateral contraction coefficient of the deformed isolation pier of the practical weir based on the comparison result.

7. The method according to claim 6, wherein the mechanical model of the practical weir water with a special-shaped isolation pier comprises an electromagnetic flow meter, a dam, and a practical weir with a special-shaped isolation pier provided with an inlet channel.

8. A measuring device for the lateral shrinkage coefficient of a special-shaped isolated pier of a practical weir, a test module for acquiring test data of the dam's overflow weir, conducting a model test based on the test data of the dam's overflow weir, and determining fitting coefficients; a determination module for obtaining parameters of a special-shaped isolation pier of a practical weir, and determining a lateral shrinkage correction coefficient of the special-shaped isolation pier based on the parameters of the special-shaped isolation pier of the practical weir and the fitting coefficient; a calculation module for calculating the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir based on the parameters of the irregular isolated piers of the practical weir and the lateral shrinkage correction coefficient of the irregular isolated piers, wherein the overall lateral shrinkage coefficient of the irregular isolated piers of the practical weir is used to evaluate the water discharge capacity of the practical weir with irregular isolated piers.

9. A computer device comprising: A computer device comprising a memory and a processor, the memory and the processor being communicatively connected to each other, computer instructions stored in the memory, and the processor executing the computer instructions to perform the method for measuring the lateral contraction coefficient of a special-shaped isolated pier of a practical weir described in any one of claims 1 to 7.

10. 1. A computer-readable storage medium, comprising: A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute a method for measuring the lateral contraction coefficient of a special-shaped isolation pier of a practical weir according to any one of claims 1 to 7.

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