A method for calculating the high correlation between dam leakage and measured seepage under parameter fitting

Abstract

The invention relates to a high correlation calculation method for dam body leakage and measured permeability under parameter fitting, and belongs to the technical field of electric digital data processing. The method comprises the following steps: step a: simulating and calculating and measuring the range value of the total leakage of the dam body; step b: actually calculating and measuring the seepage volume in the water measuring weir to obtain the total permeability of the dam body; step c: establishing a high correlation relationship model between the total leakage and the total permeability of the dam body according to the total leakage and the total permeability; and step d: evaluating the operation of the dam under the high correlation analysis of the total leakage and the total permeability. The invention has the beneficial effects of: by comparing flow data, the operation status of the soil layer of the earth-rock dam body is mastered, and under the high correlation analysis between the digital model and the actual measurement, better prediction and reliable technical support are provided for the risk management of the reservoir dam.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical digital data processing, and particularly relates to a method for calculating the high correlation between dam body leakage and measured permeability under parameter fitting. Background Art

[0002] Dam body leakage refers to the amount of reservoir water that seeps out of the dam body due to various reasons during the operation of the dam. Specifically, the long-term scouring and erosion of the dam by water flow may damage the anti-seepage layer of the dam body, and the frequent and large fluctuations in the reservoir water level will cause uneven deformation of the dam body, resulting in the appearance of cracks and leakage channels in the dam body, which increases the dam body leakage.

[0003] The seepage amount of the dam body is measured by setting a measuring weir at the drainage ditch position of the dam body. The seepage amount is obtained by measuring the seepage volume of the measuring weir. Due to the unreasonable design of the geological conditions and hydrological conditions of the dam body, such as the insufficient thickness of the anti-seepage wall of the anti-seepage layer or the poor performance of the anti-seepage material, the anti-seepage layer cannot effectively block the water infiltration of the dam body.

[0004] In summary, unreasonable or non-standard design of the dam body will increase the leakage and permeability of the dam body, and cracks in the dam body and poor quality of the anti-seepage layer may lead to worsening leakage and permeability of the dam body. Summary of the invention

[0005] The present invention provides a method for calculating the high correlation between dam body leakage and measured permeability under parameter fitting, which is used to solve the technical problem of evaluating the operation of the dam by combining the measurement of dam body leakage and the measurement of dam body permeability. By comparing flow data, the operation status of the soil layer of the earth-rock dam body is grasped. While realizing high correlation analysis between digital model and actual measurement, better prediction and reliable technical support are provided for the risk management of reservoir dams.

[0006] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0007] The high correlation calculation method between the dam body leakage and the measured seepage under parameter fitting includes the following steps:

[0008] Step a: simulate and calculate and measure the range of the total leakage of the dam body; wherein, a measurement model of the total leakage of the dam body is constructed by using the single-width flow leakage measurement method;

[0009] Step b: actually calculating and measuring the seepage volume in the water measuring weir to obtain the total seepage volume of the dam body; wherein, a total seepage volume measurement model of the dam body is constructed by using the position pressure difference method;

[0010] Step c: Establish a high correlation relationship model between the total leakage and total permeability of the dam body;

[0011] Step d: Evaluate the dam operation with high correlation analysis of total leakage and total infiltration.

[0012] Optionally, in step a, the range value of the total leakage of the dam body is measured by the following steps:

[0013] Step 1: Measure the cross section of the gap below the dam body that is connected to the water collection well, and measure the leakage at the gap through the cross section of the gap;

[0014] Step 2: Set up a water collection well under the dam body and measure the water level rise in the water collection well within a set time;

[0015] Step 3: Calculate the product of the cross-sectional area of ​​the water collection well and the height of the water level rise in the water collection well. Calculate and obtain the leakage amount by multiplying the height of the water level rise in the water collection well and the cross-sectional area of ​​the water collection well.

[0016] Furthermore, in step 1, the single-width flow leakage measurement method is used to simulate and calculate the single-width leakage of the dam body under the reservoir water level, so as to calculate the range value of the total leakage of the dam body. The specific single-width flow leakage measurement method is as follows:

[0017] (1);

[0018] in, is the cross section of the gap, is the size of the cross section of the gap, is the edge superposition calculation operation, is the included edge, Overlay the included edges to create gaps. Generate gaps by superimposing the included edges and calculate the size of the cross section of the gaps;

[0019] is the first edge, For the Strip edge, To change the first edge To Strip Edge Perform superposition to generate a cross section of the gap, and calculate the size value of the cross section of the gap;

[0020] For the time, From the first moment to the time, For the collection of each moment, To select the first moment to the Operation at a certain moment in time, To select the first moment to the a certain moment of the moment;

[0021] or To calculate the time from the first moment to the The water flow rate on the cross section of the gap at a certain moment in time.

[0022] Optionally, in step b, a measuring weir is set at the downstream foot of the dam body, and an estimate of the actual seepage volume of the dam body is measured based on the seepage volume in the measuring weir at the downstream foot of the dam body, and the operating status of the soil layer of the dam body is further understood through the actual seepage volume data of the dam body.

[0023] Furthermore, the position pressure difference method is as follows:

[0024] (2);

[0025] in, represents the i-th position, is the flow rate at the ith position, is the pressure at the ith position, For the i-th position At the i-th position, measure the pressure and the flow rate at the i-th position ;

[0026] Representative Location, For the The flow of the location, For the Position pressure, For the Location At, measure Position pressure and Traffic flow at location ;

[0027] is the flow rate at the i-th position With Traffic flow at location The flow difference;

[0028] or is the flow rate at the i-th position With Traffic flow at location The flow difference.

[0029] Optionally, in step c, the construction of a high correlation relationship model between the total leakage and the total permeability of the dam body is carried out by the following steps:

[0030] Step I: Setting up a data storage model, storing the total leakage and total permeability of the dam body in the data storage model; wherein the total leakage data of the dam body and the total permeability data of the dam body are stored separately;

[0031] Step II: Set up a data judgment model to judge the high correlation between the total leakage and total permeability of the dam body through the high correlation data judgment model.

[0032] Furthermore, in step II, the high correlation data judgment model of the total leakage and total permeability of the dam body is as follows:

[0033] (3);

[0034] in, is the total leakage, is the total permeability, The total leakage and total permeability Separate, The total leakage and total permeability Transport together;

[0035] To receive the total leakage at the same time and total permeability , The total leakage and total permeability The high correlation judgment result is The total leakage and total permeability Highly relevant judgment operations; To record the total leakage and total permeability Highly relevant results.

[0036] Optionally, in step d, the high correlation between total leakage and total permeability is analyzed; if the total leakage is greater than the total permeability, the dam is prone to crack enlargement; if the total leakage is less than the total permeability, the dam is prone to water infiltration; if the total leakage is equal to the total permeability, the dam is prone to both crack enlargement and water infiltration.

[0037] Further, the assessment of the dam’s operation showed that the dam was prone to cracks becoming larger or water seepage.

[0038] Furthermore, after evaluating the operation of the dam, the cracks in the dam are repaired and the anti-seepage layer of the dam is replaced.

[0039] Beneficial effects of the present invention:

[0040] The present invention first simulates and calculates the range value of the total leakage of the dam body, then actually calculates and measures the seepage volume in the water measuring weir to obtain the total seepage volume of the dam body; a high correlation relationship model between the total leakage and the total seepage volume of the dam body is established according to the total leakage and the total seepage volume of the dam body, and the operation of the dam is evaluated under the high correlation analysis of the total leakage and the total seepage volume, and the operation status of the soil layer of the earth-rock dam body is grasped by comparing the flow data, and under the high correlation analysis between the numerical model and the actual measurement, better prediction and reliable technical support are provided for the risk management of the reservoir dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the workflow of the present invention;

[0043] Figure 2 It is a structural diagram of the dam gap of the present invention;

[0044] Figure 3 This is a schematic diagram of the penetration detection principle of the present invention. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0046] Example 1

[0047] like Figure 1 As shown, this embodiment provides a method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting, including the following steps:

[0048] Step a: simulate and calculate and measure the range of the total leakage of the dam body; wherein, a measurement model of the total leakage of the dam body is constructed by using the single-width flow leakage measurement method;

[0049] Step b: actually calculating and measuring the seepage volume in the water measuring weir to obtain the total seepage volume of the dam body; wherein, a total seepage volume measurement model of the dam body is constructed by using the position pressure difference method;

[0050] Step c: Establish a high correlation relationship model between the total leakage and total permeability of the dam body;

[0051] Step d: Evaluate the dam operation with high correlation analysis of total leakage and total infiltration.

[0052] Example 2

[0053] like Figure 2 As shown, based on Example 1, in step a, the range value of the total leakage of the dam body is measured using the following steps:

[0054] Step 1: Measure the cross section of the gap below the dam body that is connected to the water collection well, and measure the leakage at the gap through the cross section of the gap;

[0055] Step 2: Set up a water collection well under the dam body and measure the water level rise in the water collection well within a set time;

[0056] Step 3: Calculate the product of the cross-sectional area of ​​the water collection well and the height of the water level rise in the water collection well. Calculate and obtain the leakage amount by multiplying the height of the water level rise in the water collection well and the cross-sectional area of ​​the water collection well.

[0057] In step 3, the product of the water level rise height of the water collection well and the cross-sectional area of ​​the water collection well can be calculated at each moment. In this way, the total leakage amount is obtained by adding the product of the water level rise height of the water collection well and the cross-sectional area of ​​the water collection well calculated at each moment.

[0058] Furthermore, in step 1, the single-width flow leakage measurement method is used to simulate and calculate the single-width leakage of the dam body under the reservoir water level, so as to calculate the range value of the total leakage of the dam body (because the simulation system can simulate the detection of the flow through the gap cross section at each moment, specifically, the gap cross section at each moment is multiplied by the flow through the gap cross section to calculate the volume of water passing through the gap cross section at each moment). The specific single-width flow leakage measurement method is the following formula (1): (1);

[0059] in, is the cross section of the gap, is the size of the cross section of the gap, is the edge superposition calculation operation, is the included edge. Since the gap has 4 edges, the included edge is the first edge. , the second edge , the third edge , No. Strip edge That is the fourth edge , Overlay the included edges to generate a gap, i.e. the first edge To the 4th edge Combine to create a gap, the first edge and the third edge is the length of the gap, the second side and the 4th edge is the width of the gap, The included edges are superimposed to generate gaps, and the size of the cross-section of the gap is intelligently calculated through the simulation system;

[0060] is the first edge, For the Edge (ie the 4th edge ), To change the first edge To Strip edge Perform superposition to generate the cross section of the gap and calculate the size of the cross section of the gap. An operation for calculating the size of the cross section of the gap;

[0061] For the time, From the first moment to the time, To collect or record every moment, To select the first moment to the Operation at a certain moment in time, To select the first moment to the a certain moment of the moment;

[0062] or To calculate the time from the first moment to the The water flow rate on the slit cross section at a certain moment in time (because the simulation system can simulate the detection of the flow rate through the slit cross section at each moment).

[0063] like Figure 2 As shown, the first edge and the third edge is the length of the gap, the second side and the 4th edge is the width of the gap, In accordance with Article 1 , the second edge , the third edge and the 4th edge The edge superposition is generated in the order of Figure 2 Gap shown.

[0064] Embodiment 3;

[0065] like Figure 3As shown, based on Example 1, in step b, a measuring weir is set at the downstream foot of the dam body, and the estimate of the actual seepage amount of the dam body is measured according to the seepage volume in the measuring weir at the downstream foot of the dam body. The operating status of the soil layer of the dam body is then understood through the actual seepage data of the dam body, because the seepage condition of the dam body can be known through the seepage amount.

[0066] Furthermore, the position pressure difference method is as follows: (2);

[0067] in, represents the i-th position, is the flow rate at the i-th position, is the pressure at the i-th position, For the i-th position At the i-th position, measure the pressure and the flow rate at the i-th position ;

[0068] Representative Location, For the The flow of the location, For the The pressure of position, here From 1 to 10, For the Location At, measure Position pressure and Traffic flow at location ;

[0069] is the flow rate at the i-th position With Traffic flow at location The flow difference;

[0070] or is the flow rate at the i-th position With Traffic flow at location The flow difference.

[0071] Specifically, Figure 3 The figure shows the seepage streamline of water in the water measuring weir. There is flow at the i-th position. , there is pressure at position i , there is flow at position i-1 , there is pressure at position i-1 , if the flow rate at position i , pressure at position i and the flow rate at position i-1 , pressure at position i-1 If they are equal, is 0 (because minus is 0), the dam body seepage is stable, and there is no excess seepage in the dam body; similarly, there is flow at the i-2 position , there is pressure at position i-2 , if the flow rate at position i , pressure at position i and the flow rate at position i-2 , pressure at position i-2 If they are equal, is 0 (because minus =0). Formula (2) mainly records the flow difference between the flow at the ith position and the flow at the i-1st position, the flow difference between the flow at the ith position and the flow at the i-2nd position, and the flow difference between the flow at the ith position and the flow at the i-10th position, and checks whether each flow difference is 0. As long as the flow at the ith position is greater than any flow from the flow at the i-1st position to the flow at the i-10th position, If it is not 0, the seepage of the dam body is unstable and there is excess seepage in the dam body.

[0072] Embodiment 4;

[0073] In step c, the construction of a high correlation relationship model between the total leakage and the total permeability of the dam body is carried out using the following steps:

[0074] Step I: Setting up a data storage model, storing the total leakage and total permeability of the dam body in the data storage model; wherein the total leakage data of the dam body and the total permeability data of the dam body are stored separately (to avoid mixing the two data);

[0075] Step II: Set up a data judgment model to judge the high correlation between the total leakage and total seepage of the dam body through the high correlation data judgment model.

[0076] Furthermore, in step II, the high correlation data judgment model of the total leakage and total permeability of the dam body is as follows: (3);

[0077] in, is the total leakage, is the total permeability, The total leakage and total permeability Separation means that the data is stored separately. The total leakage and total permeability Separate storage, The total leakage and total permeability Transport together, that is For data transfer operations, The total leakage and total permeability Transported together;

[0078] To receive the total leakage at the same time and total permeability , The total leakage and total permeability The high correlation judgment result is The total leakage and total permeability Highly relevant judgment operations; To record the total leakage and total permeability The high correlation result means that the total leakage is greater than the total infiltration, the total leakage is less than the total infiltration, and the total leakage is equal to the total infiltration.

[0079] In addition, by analyzing the high correlation between total leakage and total permeability in step d, if the total leakage is greater than the total permeability, the dam is prone to crack enlargement; if the total leakage is less than the total permeability, the dam is prone to water permeation; if the total leakage is equal to the total permeability, the dam is prone to both crack enlargement and water permeation. In either case, the dam needs to be repaired and the anti-seepage layer of the dam needs to be replaced.

[0080] The assessment of the dam's operation is that the dam is prone to cracks becoming larger or water seeping in easily.

[0081] After evaluating the dam's operating conditions, the gaps in the dam were repaired and the dam's anti-seepage layer was replaced.

[0082] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for calculating the high correlation between dam body leakage and measured seepage under parameter fitting, characterized in that: The steps include: Step a: simulate and calculate and measure the range of the total leakage of the dam body; wherein, a measurement model of the total leakage of the dam body is constructed by using the single-width flow leakage measurement method; The single-width flow leakage measurement method is used to simulate and calculate the single-width leakage of the dam body under the reservoir water level, so as to calculate the range value of the total leakage of the dam body. The specific single-width flow leakage measurement method is as follows: (1)； in, is the cross section of the gap, is the size of the cross section of the gap, is the edge superposition calculation operation, is the included edge, Overlay the included edges to create gaps. Generate gaps by superimposing the included edges and calculate the size of the cross section of the gaps; is the first edge, For the Strip edge, To change the first edge To Strip Edge Perform superposition to generate a cross section of the gap, and calculate the size value of the cross section of the gap; For the time, From the first moment to the time, For the collection of each moment, To select the first moment to the Operation at a certain moment in time, To select the first moment to the a certain moment of the moment; or To calculate the time from the first moment to the The flow rate of water on the cross section of the gap at a certain moment in time; Step b: actually calculating and measuring the seepage volume in the water measuring weir to obtain the total seepage volume of the dam body; wherein, a total seepage volume measurement model of the dam body is constructed by using the position pressure difference method; The position pressure difference method is as follows: (2)； in, represents the i-th position, is the flow rate at the ith position, is the pressure at the ith position, For the i-th position At the i-th position, measure the pressure and the flow rate at the i-th position ; Representative Location, For the The flow of the location, For the Position pressure, For the Location At, measure Position pressure and Traffic flow at location ; is the flow rate at the i-th position With Traffic flow at location The flow rate difference; or is the flow rate at the i-th position With Traffic flow at location The flow difference; Step c: Establish a high correlation relationship model between the total leakage and total permeability of the dam body; The highly correlated data judgment model of the total leakage and total permeability of the dam body is as follows: (3); in, is the total leakage, is the total permeability, The total leakage and total permeability Separate, The total leakage and total permeability Transport together; To receive the total leakage at the same time and total permeability , The total leakage and total permeability The high correlation judgment result is The total leakage and total permeability Highly relevant judgment operations; To record the total leakage and total permeability Highly relevant results; Step d: Evaluate the dam operation with high correlation analysis of total leakage and total infiltration.

2. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 1 is characterized in that: In step a, the range value of the total leakage of the dam body is measured by the following steps: Step 1: Measure the cross section of the gap below the dam body that is connected to the water collection well, and measure the leakage at the gap through the cross section of the gap; Step 2: Set up a water collection well under the dam body and measure the water level rise in the water collection well within a set time; Step 3: Calculate the product of the cross-sectional area of ​​the water collection well and the height of the water level rise in the water collection well. Calculate and obtain the leakage amount by multiplying the height of the water level rise in the water collection well and the cross-sectional area of ​​the water collection well.

3. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 1 is characterized in that: In step b, a measuring weir is set at the downstream foot of the dam body, and an estimate of the actual seepage volume of the dam body is measured based on the seepage volume in the measuring weir at the downstream foot of the dam body. The operating status of the soil layer of the dam body is then understood through the actual seepage volume data of the dam body.

4. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 1 is characterized in that: In step c, the construction of a high correlation relationship model between the total leakage and the total permeability of the dam body is carried out by the following steps: Step I: Setting up a data storage model, storing the total leakage and total permeability of the dam body in the data storage model; wherein the total leakage data of the dam body and the total permeability data of the dam body are stored separately; Step II: Set up a data judgment model to judge the high correlation between the total leakage and total seepage of the dam body through the high correlation data judgment model.

5. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 1 is characterized in that: In the step d, the high correlation between the total leakage and the total permeability is analyzed; if the total leakage is greater than the total permeability, the dam is prone to have cracks that become larger; If the total leakage is less than the total infiltration, the dam is susceptible to water infiltration; If the total leakage is equal to the total infiltration, the dam is prone to both the enlargement of gaps and the infiltration of water.

6. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 5 is characterized in that: The assessment of the dam's operating conditions is that the dam is prone to cracks becoming larger or water seeping in easily.

7. The method for calculating the high correlation between the dam body leakage and the measured permeability under parameter fitting according to claim 6 is characterized in that: After evaluating the operation of the dam, the cracks in the dam are repaired and the anti-seepage layer of the dam is replaced.

Images