Method for evaluating safety state of earth-rock dam seepage, terminal device and storage medium

Abstract

The application is suitable for the technical field of water conservancy projects, and provides an evaluation method for the seepage safety state of an earth-rock dam, a terminal device and a storage medium. The evaluation method for the seepage safety state of the earth-rock dam comprises the following steps: constructing an earth-rock dam anti-seepage body standardization model; calculating the theoretical seepage flow of the earth-rock dam anti-seepage body based on the earth-rock dam anti-seepage body standardization model; measuring the actual seepage flow of the earth-rock dam to calculate an apparent permeability coefficient, the apparent permeability coefficient being the ratio of the actual seepage flow to the theoretical seepage flow; calculating an anti-seepage system defect coefficient, the anti-seepage system defect coefficient being the ratio of the apparent permeability coefficient to a permeability coefficient test value; and evaluating the seepage safety state of the earth-rock dam according to the numerical value of the anti-seepage system defect coefficient. The anti-seepage system defect coefficient can be used to quickly evaluate the seepage safety state of the earth-rock dam, so as to test the construction quality of the dam project, and to make a quick warning and disposal for seepage damage and breach.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and more particularly to an evaluation method, terminal equipment and storage medium for the seepage safety status of an earth-rock dam. Background Art

[0002] Seepage failure is an accident that lacks intuitive evaluation indicators or phenomena. The failure of an earth-rock dam due to seepage failure is a gradual process, with seepage volume gradually increasing over a period of time. After a breach occurs, flood flow also takes a long time to gradually increase to peak flow. Effective early warning and appropriate response to seepage failure in earth-rock dams can delay failure, reduce losses, or even prevent it, ultimately eliminating the disaster. Therefore, rapid assessment of the seepage safety status of earth-rock dams is crucial for early warning and response to seepage failure.

[0003] Determining safety indicators for seepage failure is difficult because it is influenced by factors such as dam height and river valley shape, and no definitive method has been proposed. According to the "Guidelines for Reservoir Dam Safety Assessment," dam safety is generally assessed using monitoring data analysis, comparing the results of field data analysis with the allowable values ​​specified in the standard. While a mature evaluation theory has yet to be established for anti-seepage materials such as clay, hydraulic gradient is often used as an indicator of seepage failure. This method is generally highly accurate and has a wealth of computational experience. However, it reflects the hydraulic conditions at a single computational node and cannot accurately represent the seepage behavior of a specific area. Similarly, the hydraulic gradient inferred from measured dam water level data only reflects the general operating conditions within the anti-seepage structure and cannot identify the specific location of failure. Therefore, the more reliable evaluation standard currently being developed is to use numerical simulations to determine the continuous hydraulic gradient field within the dam. This method has been widely used to predict seepage conditions and evaluate operational data for ongoing projects. However, considering that the accuracy of numerical calculations is directly related to the refinement of the mesh, and based on current computer technology, relatively fine computational meshes are often accompanied by complex iterative calculations and extremely long calculation times, it is clear that this method, while accurate and effective, has certain limitations in its scope of application and is not suitable for rapid assessment of dam seepage conditions in a short period of time.

[0004] In theory, the safety status of seepage can be assessed by experienced experts based on monitoring data such as seepage pressure and seepage flow, as well as calculated seepage fields and flow rates. However, in practice, the number of seepage pressure monitoring points within a dam is often far from sufficient to establish a seepage field, and the remaining seepage pressure monitoring data is considered less reliable due to factors such as equipment durability and piezometric tube blockage. Furthermore, the compilation and analysis of seepage pressure monitoring data within the dam often has a certain time lag. Therefore, the value of seepage pressure monitoring for rapid assessment of seepage safety status is significantly limited. Even if the monitoring data is complete and compiled in a timely manner, the lack of relevant indicators and thresholds requires expert input and subjective judgment, making it difficult to determine safety through a simple computer-based safety warning system.

[0005] Seepage monitoring is generally intuitive, accurate, and easy to maintain, and is a reliable basis for seepage safety evaluation. However, due to differences in topographic conditions, dam height, and dam cross-section at earth-rock dam sites, the same seepage volume can represent different safety characteristics for different projects. In the absence of scientific and quantitative analysis methods, it is difficult for managers who do not have long-term, multi-condition observation experience on the same project, or for computers (safety early warning systems) that must rely on quantitative indicators and thresholds for judgment, to use seepage monitoring data to conduct a quick and simple evaluation of seepage safety.

[0006] Due to the complexity of seepage failure in earth-rockfill dams and the computational complexity associated with existing evaluation standards, current research and evaluation of seepage failure in earth-rockfill dams primarily focuses on traditional fault tree analysis and event tree evaluation methods. These methods generally assess dam failure risk from a holistic perspective, requiring a case-by-case assessment based on various failure factors. Unlike other earth-rockfill dam failure forms such as overtopping, earth-rockfill dam failure due to seepage failure lacks intuitive evaluation indicators, requiring the construction of a failure probability model based on extensive dam failure data. However, with the advancement of earth-rockfill dam construction and design standards, the available dam failure data is largely limited to older homogeneous earth dams. Data on seepage failure in earth-rockfill dams using anti-seepage units is scarce, and even fewer exist for high earth-rockfill dams. Consequently, the traditional failure probability assessment system for earth-rockfill dams due to seepage failure is becoming increasingly unsuitable for today's demands. Summary of the Invention

[0007] (1) Technical issues to be resolved

[0008] The technical problem to be solved by the present invention is how to realize the rapid evaluation of the seepage safety status of earth-rock dam.

[0009] (2) Technical solution

[0010] To achieve the above object, the technical solution adopted by the present invention is:

[0011] In a first aspect, an embodiment of the present application provides a method for evaluating the seepage safety status of an earth-rock dam, characterized by comprising the following steps:

[0012] S1. Construct a standardized model of earth-rock dam anti-seepage body;

[0013] S2. Calculating the theoretical seepage volume of the earth-rock dam anti-seepage body based on the standardized model of the earth-rock dam anti-seepage body;

[0014] S3. Measure the actual seepage rate of the earth-rock dam and calculate the apparent permeability coefficient, where the apparent permeability coefficient is the ratio of the actual seepage rate to the theoretical seepage rate;

[0015] S4. Calculating a defect coefficient of an anti-seepage system, wherein the defect coefficient of the anti-seepage system is a ratio of the apparent permeability coefficient to a test value of the permeability coefficient;

[0016] S5. Evaluate the seepage safety status of the earth-rock dam based on the numerical value of the defect coefficient of the anti-seepage system.

[0017] In one embodiment, step S1 includes the following steps:

[0018] In the Cartesian rectangular coordinate system, a standardized model of the earth-rock dam anti-seepage body is constructed, in which the direction from the left bank to the right bank along the dam axis is taken as the x The positive direction of the coordinate is from upstream to downstream along the river. y The positive direction of the coordinate is from low altitude to high altitude along the vertical direction z The positive direction of the coordinate is defined as the tangent direction of the anti-seepage body from bottom to top as the positive direction of the length of the anti-seepage body. The corresponding coordinate is l .

[0019] In one embodiment, step S2 includes the following steps:

[0020] Based on the standardized model of the earth-rock dam anti-seepage body, the elevation is calculated according to Darcy's law. z ,length l Seepage volume of the anti-seepage body at dQ ;

[0021] Seepage rate of the anti-seepage body along its length dQ Perform integration to obtain the theoretical seepage rate of the earth-rock dam anti-seepage body.

[0022] In one embodiment, step S3 includes the following steps:

[0023] A water measuring weir is set at the downstream toe of the earth-rock dam, and a seepage flow measuring device is set in the water measuring weir. The actual seepage flow of the earth-rock dam is measured by the seepage flow measuring device. Specifically, the seepage flow measuring device is a conventional technical means well known to those skilled in the art, and this application will not elaborate on it.

[0024] An apparent permeability coefficient is calculated, where the apparent permeability coefficient is the ratio of the actual permeability to the theoretical permeability.

[0025] In one embodiment, step S5 includes the following steps:

[0026] If the defect coefficient of the anti-seepage system is greater than 1, it means that the anti-seepage body of the earth-rock dam has a certain degree of damage and defects during actual operation;

[0027] If the defect coefficient of the anti-seepage system is less than or equal to 1, it means that the actual anti-seepage performance of the earth-rock dam anti-seepage body is higher than the design expectation.

[0028] In one embodiment, the earth-rock dam anti-seepage body is a heterogeneous anti-seepage body including multiple anti-seepage body parts. The theoretical seepage rate of the earth-rock dam anti-seepage body is the sum of the theoretical seepage rates of the multiple anti-seepage body parts.

[0029] In one embodiment, the earth-rock dam anti-seepage body is a partitioned dam comprising a plurality of anti-seepage body units. The theoretical seepage rate of the earth-rock dam anti-seepage body is the sum of the theoretical seepage rates of the anti-seepage body units.

[0030] In one embodiment, the earth-rock dam anti-seepage body is a heterogeneous anti-seepage body, and the apparent permeability coefficient is the ratio of the actual seepage rate to the theoretical seepage rate, wherein the theoretical seepage rate is the relationship between the seepage rate and the upstream and downstream water levels when the permeability coefficient of the anti-seepage body is equal to the test value of the permeability coefficient.

[0031] In one embodiment, during any analysis period, the average impermeability system defect coefficient Calculated by the following formula:

[0032]

[0033] Where, is the start time of the analysis period, is the end time of the analysis period, R is the defect coefficient of the anti-seepage system.

[0034] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0035] The evaluation method for the seepage safety status of earth-rock dams provided by the present invention can calculate the numerical value of the defect coefficient of the anti-seepage system, and the seepage safety status of the earth-rock dam can be quickly evaluated based on the numerical value of the defect coefficient of the anti-seepage system. The permeability coefficient in the prior art is a theoretical value obtained under ideal laboratory conditions without considering on-site defects. Compared with the prior art, the defect coefficient of the anti-seepage system proposed by the present invention takes into account both the physical properties of the anti-seepage material itself and the effects of defects and damage that may exist under various actual circumstances. It is an evaluation indicator for the actual engineering safety status, which can realize the rapid analysis and judgment of the seepage safety status of the earth-rock dam, facilitate timely warning and disposal of seepage damage and collapse, and ensure the safety of life and property in downstream areas.

[0036] In a second aspect, an embodiment of the present application provides a terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for evaluating the seepage safety status of an earth-rock dam as described in any one of the first aspects is implemented.

[0037] In a third aspect, an embodiment of the present application provides a storage medium storing a computer program, which, when executed by a processor, implements a method for evaluating the seepage safety status of an earth-rock dam as described in any one of the first aspects.

[0038] In a fourth aspect, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute the method for evaluating the seepage safety status of an earth-rock dam as described in any one of the first aspects above.

[0039] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0041] Figure 1 It is a flow chart of a method for evaluating the seepage safety status of an earth-rock dam provided in an embodiment of the present invention.

[0042] Figure 2 It is a structural side view of the standardized model of the earth-rock dam anti-seepage body provided by an embodiment of the present invention.

[0043] Figure 3It is a structural front view of the standardized model of the earth-rock dam anti-seepage body provided by an embodiment of the present invention.

[0044] Figure 4 It is a structural diagram of a terminal device provided by an embodiment of the present invention.

[0045] The reference numerals in the figures are:

[0046] 2. Terminal device; 20. Processor; 21. Memory; 22. Computer program. DETAILED DESCRIPTION

[0047] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0048] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0049] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0050] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0051] The evaluation method for the seepage safety status of an earth-rock dam provided in the embodiment of the present application can be applied to terminal devices such as mobile phones, tablet computers, wearable devices, vehicle-mounted devices, augmented reality (AR) / virtual reality (VR) devices, laptop computers, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). The embodiment of the present application does not impose any restrictions on the specific type of terminal device.

[0052] For example, the terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a vehicle networking terminal, a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite wireless device, a wireless modem card, a TV set-top box (STB), customer premise equipment (CPE) and / or other devices for communicating on a wireless system and a next-generation communication system, such as a mobile terminal in a 5G network or a mobile terminal in a future evolved Public Land Mobile Network (PLMN) network.

[0053] like Figure 1 As shown, an embodiment of the present invention provides a method for evaluating the seepage safety status of an earth-rock dam, comprising the following steps:

[0054] S1. Construct a standardized model of earth-rock dam anti-seepage body;

[0055] S2. Calculating the theoretical seepage volume of the earth-rock dam anti-seepage body based on the standardized model of the earth-rock dam anti-seepage body;

[0056] S3. Measure the actual seepage rate of the earth-rock dam and calculate the apparent permeability coefficient, where the apparent permeability coefficient is the ratio of the actual seepage rate to the theoretical seepage rate;

[0057] S4. Calculating a defect coefficient of an anti-seepage system, wherein the defect coefficient of the anti-seepage system is a ratio of the apparent permeability coefficient to a test value of the permeability coefficient;

[0058] S5. Evaluate the seepage safety status of the earth-rock dam based on the numerical value of the defect coefficient of the anti-seepage system.

[0059] like Figure 2 and Figure 3 As shown in Figure 2, the construction process of the standardized model of the earth-rock dam anti-seepage body is as follows:

[0060] An earth-rock dam is a project built on a covering layer. In the covering layer, a concrete cut-off wall or a combination of a concrete cut-off wall and a grouting curtain is often used to cut off seepage. The cover layer cut-off wall is integrated with the cut-off body in the dam body. Figure 2 shown.

[0061] In actual projects, due to the complexity of grouting operations and geological conditions, the anti-seepage coefficient of the contact curtain is often impossible to determine. At the same time, the leakage through the anti-seepage curtain cannot be measured in actual projects. Therefore, the anti-seepage curtain is generally not included in the calculation scope of the anti-seepage body. Under most conditions, only the anti-seepage body of the dam body and the anti-seepage wall in the cover layer are regarded as the analysis objects of the entire project.

[0062] In the Cartesian rectangular coordinate system, a standardized model of the earth-rock dam anti-seepage body is constructed, in which the direction from the left bank to the right bank along the dam axis is taken as the x The positive direction of the coordinate is from upstream to downstream along the river. y The positive direction of the coordinate is from low altitude to high altitude along the vertical direction z The positive direction of the coordinate is defined as the tangent direction of the anti-seepage body from bottom to top as the positive direction of the length of the anti-seepage body. The corresponding coordinate is l .

[0063] Because the seepage coefficient of the impermeable material is relatively small, especially in the unsaturated state, actual calculations assume that no seepage occurs in the impermeable body above the reservoir water level, and that the surface head on the downstream side of the impermeable body is equal to the water level behind the dam. The head in the dam is concentrated within the impermeable body, gradually and evenly decreasing from the water level in front of the dam to the water level behind the dam. It is assumed that the seepage direction in the impermeable body is orthogonal to the body's central axis (median axis plane), that the impermeable body is uniformly permeable, and that the seepage conforms to Darcy's law.

[0064] This method does not take into account possible defects in the impermeable body itself, local defects in the joints such as the contact between the dam body and the river valley, and detailed structures such as joints and water stops.

[0065] Assume that the current upstream water level is , the downstream water level is The thickness of the anti-seepage body along the direction perpendicular to the center line is (For projects with multiple anti-seepage bodies, the thickness is the sum of the thicknesses of the multiple anti-seepage bodies), and the width along the dam axis is , the thickness and width of the anti-seepage body are vertical coordinates z or length coordinate l function.

[0066] z Coordinates and l The coordinates can be converted using a certain conversion relationship. Taking a straight core wall rockfill dam as an example, the “depth” from the dam top downward is defined as s ,Right now

[0067]

[0068] Where z damtop is the elevation of the dam crest, and z is the elevation of any point on the cross section of the impermeable body.

[0069]

[0070] Where, is the slope ratio of the upstream surface of the core wall. z At (length coordinate l ) is a certain height of dz (Length is dl ) of the impermeable body (such as Figure 2 and Figure 3 ), when the anti-seepage body is above the downstream water level When the water head difference is When the anti-seepage body is below the downstream water level, the head difference it bears is Let the function Indicates height z At (length coordinate l ) The water head difference that the anti-seepage body bears, that is,

[0071]

[0072]

[0073] Darcy's law describes the movement of groundwater in saturated sand in a laminar flow state: the amount of seepage water in sand is Q Head difference with seepage (h 1 -h 2 =Δh) is proportional to the path through the specimen L Inversely proportional. The formula can be used v=ki (Hydraulic gradient i=Δh / L , dimensionless). Combined with the continuity equation in hydraulics Q=vA , which can be further written as Q = kiA According to Darcy's law, the average hydraulic gradient in the anti-seepage body at this location is:

[0074]

[0075] assumed k is the permeability coefficient, then the elevation is z Seepage volume of the anti-seepage body at dQ for:

[0076]

[0077] By integrating the above formula from bottom to top along the length (height) direction, the seepage volume through the entire anti-seepage body can be calculated:

[0078]

[0079] in, is the length coordinate of the lowest part of the infiltration surface of the anti-seepage body, It is the length coordinate of the upstream water level position on the anti-seepage body.

[0080] Depth and length coordinates l After association, the functions in the above formula can be expressed explicitly:

[0081]

[0082]

[0083]

[0084] in, is the normal downstream water level or the water level corresponding to the corresponding seepage volume, is the slope ratio of the left bank of the earth-rock dam, is the slope ratio of the right bank of the earth-rock dam, is the slope ratio of the upstream side of the core wall of the anti-seepage body, is the slope ratio of the downstream side of the core wall of the anti-seepage body, is the dam crest elevation, is the width of the dam crest along the dam axis, is the length coordinate of the top of the impermeable body.

[0085] If, in actual engineering, the anti-seepage body unit is partitioned, that is, the anti-seepage body of the earth-rock dam is a partitioned dam (the dam section consists of an anti-seepage body and several partitions made of materials with different permeabilities, which can be divided into straight core wall dams, inclined core wall dams, face plate dams, and other types of anti-seepage body partitioned dams), and the partitioned dam includes multiple anti-seepage body units, then the seepage rate through the entire anti-seepage body can be written as:

[0086]

[0087] in, , and is the permeability coefficient of each anti-seepage unit, , and is the length coordinate corresponding to the top of each anti-seepage unit. If the anti-seepage body includes a cutoff wall, then is the length coordinate of the lowest point of the wall.

[0088] Through the above formula, the actual seepage volume and water level monitoring data of the project can be used to calculate the water level. Calculate the apparent permeability coefficient of the corresponding anti-seepage body Actual seepage and water level monitoring data It can be obtained by setting up seepage flow measurement equipment in the water measuring weir.

[0089] If the calculation project uses a homogeneous impermeable body (meaning that the vast majority of the dam body is filled with a single, homogeneous soil material, and the entire body is built with uniform clay material such as loam or sandy loam), the apparent permeability coefficient can be simplified as:

[0090]

[0091] If the calculation project uses a heterogeneous anti-seepage body (different parts of the dam body are constructed with soil or materials of different properties), the corresponding apparent permeability coefficient can be simplified as follows:

[0092]

[0093] definition R Is the imperfection coefficient of the anti-seepage system, which indicates the degree of integrity defect of the anti-seepage system. The imperfection parameter of the anti-seepage system can be expressed as the apparent permeability coefficient and permeability coefficient test value The ratio of , that is:

[0094]

[0095] Permeability coefficient test value It can be obtained through experiments, generally through constant head test or variable head test.

[0096] The constant head test is suitable for highly permeable non-cohesive soils. During the test, the head difference is kept constant and the permeability coefficient is calculated by measuring the flow rate. The specific steps are as follows: fill the saturated sample in the transparent plastic cylinder and keep the head difference constant; after the head difference and seepage flow rate are stable, measure the flow rate. Q and time t .

[0097] According to Darcy's law formula Q= A(h 2 -h 1) / L ,in, h 2 -h 1 is the head difference, A is the cross-sectional area, L is the seepage path length, and the permeability coefficient test value is calculated . ‌

[0098] The variable head test is suitable for rock and soil with low permeability. During the test, the head difference changes with time, and the permeability coefficient is calculated by observing the head change. The specific steps are as follows: fill the soil sample in a glass tube or U-shaped tube with a scale and initially fill it with water to a certain height; record the starting and ending head differences, and calculate the change of the head difference with time. According to the instantaneous Darcy's law formula, the permeability coefficient test value is derived. . ‌

[0099] Compared with the theoretical seepage rate under the same working conditions The ratio of , that is:

[0100]

[0101] Theoretical seepage rate It can be understood that the permeability coefficient of the anti-seepage body is equal to the permeability coefficient test value Under the condition of , the relationship between seepage volume and upstream and downstream water levels is:

[0102]

[0103] , and is the test value of the permeability coefficient of each partition of the corresponding anti-seepage body.

[0104] In any analysis period, the average anti-seepage system defect coefficient Calculated by the following formula:

[0105]

[0106] Where, is the start time of the analysis period, is the end time of the analysis period, R is the defect coefficient of the anti-seepage system.

[0107] Defect coefficient of anti-seepage system R It takes into account both the physical properties of the anti-seepage material itself and the effects of defects and damage that may exist in various actual situations. It is an evaluation indicator for the safety status of actual projects. The traditional concept of permeability coefficient is a theoretical value obtained under ideal laboratory conditions without considering field defects. RIf the calculated value is greater than 1 (i.e., the apparent permeability coefficient is greater than the permeability coefficient test value), it means that the anti-seepage material has not reached a uniform and complete state during actual application, that is, there are certain degrees of damage and defects during actual operation. In addition, according to the current relevant specifications for earth-rock dams in the water conservancy and hydropower industries, the permeability coefficient test value does not take into account the influence of confining pressure, i.e., stress state, or porosity, i.e., physical state, on the permeability coefficient. Therefore, if the calculated value is R If the value is less than 1, it means that the actual anti-seepage performance of the anti-seepage system is higher than the design expectation due to the influence of confining pressure and other factors. The calculated anti-seepage system defect coefficient can also reflect the construction quality of the project to a certain extent. R The smaller the value, the better the construction quality and the fewer defects in the dam body. R The larger the value, the more it indicates that the construction quality of the project needs to be further improved.

[0108] For various types of earth-rock dams, a one-to-one correspondence between seepage rate and imperfection coefficient of anti-seepage system can be established according to the suggested generalization method of seepage rate.

[0109] Through the definition of the imperfection coefficient of the anti-seepage system, it can be found that when the performance of the anti-seepage system is relatively stable, the amplitude of the imperfection parameter of the anti-seepage system with the water level change should be relatively small in principle, and may gradually decrease. This is mainly due to the imperfection parameter of the anti-seepage system. R Considering the anti-seepage system as a homogeneous whole, the coefficient reflects the actual number of defects in the project. If the defects in the anti-seepage system remain unchanged during actual operation, the anti-seepage system defect parameter should be a constant value, independent of the dam's operating conditions. The variation in the anti-seepage system defect coefficient can be used to evaluate the stability of the project's anti-seepage system performance.

[0110] In this embodiment, the calculated defect parameters of the anti-seepage system are R It can be used to quickly evaluate the seepage safety status of earth-rock dams.

[0111] like Figure 4 As shown, an embodiment of the present application also provides a terminal device 2, including at least one memory 21, at least one processor 20, and a computer program 22 stored in the memory 21 and executable on the processor 20, wherein when the processor 20 executes the computer program 22, it implements the method for evaluating the seepage safety status of an earth-rock dam as described in any one of the first aspects.

[0112] in,

[0113] The terminal device 2 can be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal device 2 can include, but is not limited to, a processor 20 and a memory 21. Those skilled in the art will understand that Figure 4 It is only an example of the terminal device 2 and does not constitute a limitation on the terminal device 2. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, etc.

[0114] The processor 20 is a central processing unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor can be the nerve center and command center of the wireless router. The processor can generate operation control signals based on instruction opcodes and timing signals to control instruction fetching and execution. The memory can be used to store computer executable program code, which includes instructions. The processor executes various functional applications and data processing of the network device by running the instructions stored in the memory. The memory can include a program storage area and a data storage area, such as for storing data of a sound signal to be played. For example, the memory can be a double data rate synchronous dynamic random access memory (DDR) or flash memory.

[0115] In some embodiments, the memory 21 may be an internal storage unit of the terminal device 2, such as a hard drive or memory of the terminal device 2. In other embodiments, the memory 21 may also be an external storage device of the terminal device 2, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the terminal device 2. Furthermore, the memory 21 may include both an internal storage unit of the terminal device 2 and an external storage device. The memory 21 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of the computer program. The memory 21 may also be used to temporarily store data that has been output or is about to be output.

[0116] In one embodiment, the terminal device 2 may further include a communication module, which may provide communication solutions applied to the terminal device 2, including wireless local area networks (WLAN) (such as Wi-Fi networks), Bluetooth, Zigbee, mobile communication networks, global navigation satellite systems (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), and the like. The communication module may be one or more devices integrating at least one communication processing module. The communication module may include an antenna, which may have only one array element or an antenna array including multiple array elements. The communication module may receive electromagnetic waves through the antenna, frequency modulate and filter the electromagnetic wave signals, and send the processed signals to the processor. The communication module may also receive signals to be transmitted from the processor, frequency modulate and amplify them, and convert them into electromagnetic waves for radiation via the antenna.

[0117] In one embodiment, the terminal device 2 may further include a power management module, which may receive input from a battery and / or a charger to power the processor, the memory, the communication module, and the like.

[0118] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0119] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0120] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0121] An embodiment of the present application further provides a storage medium, which is a computer-readable storage program. The computer-readable storage program stores a computer program. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0122] An embodiment of the present application provides a computer program product. When the computer program product is run on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned various method embodiments when executing the computer program product.

[0123] If the integrated unit is implemented as a software functional unit and sold or used as a standalone product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application can implement all or part of the process steps in the above-mentioned method embodiments by using a computer program to instruct the relevant hardware. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of each of the above-mentioned method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file, or some intermediate form. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a camera / terminal device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signals, telecommunication signals, and software distribution media. Examples include USB flash drives, removable hard drives, magnetic disks, or optical disks. In some jurisdictions, based on legislation and patent practice, computer-readable media cannot be electric carrier signals or telecommunication signals.

[0124] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0125] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0126] In the embodiments provided in this application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0128] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method for evaluating the seepage safety status of earth-rock dams, characterized in that: The following steps are involved: S1. Construct a standardized model of earth-rock dam anti-seepage body; S2. Calculating the theoretical seepage volume of the earth-rock dam anti-seepage body based on the standardized model of the earth-rock dam anti-seepage body; S3. Measure the actual seepage rate of the earth-rock dam and calculate the apparent permeability coefficient, where the apparent permeability coefficient is the ratio of the actual seepage rate to the theoretical seepage rate; S4. Calculating a defect coefficient of an anti-seepage system, wherein the defect coefficient of the anti-seepage system is a ratio of the apparent permeability coefficient to a test value of the permeability coefficient; S5. Evaluate the seepage safety status of the earth-rock dam based on the numerical value of the defect coefficient of the anti-seepage system.

2. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: Step S1 includes the following steps: In the Cartesian rectangular coordinate system, a standardized model of the earth-rock dam anti-seepage body is constructed, in which the direction from the left bank to the right bank along the dam axis is taken as the x The positive direction of the coordinate is from upstream to downstream along the river. y The positive direction of the coordinate is from low altitude to high altitude along the vertical direction z The positive direction of the coordinate is defined as the tangent direction of the anti-seepage body from bottom to top as the positive direction of the length of the anti-seepage body. The corresponding coordinate is l .

3. The method for evaluating the seepage safety status of an earth-rock dam according to claim 2, wherein: Step S2 includes the following steps: Based on the standardized model of the earth-rock dam anti-seepage body, the elevation is calculated according to Darcy's law. z ,length l Seepage volume of the anti-seepage body at dQ ; Seepage rate of the anti-seepage body along its length dQ Perform integration to obtain the theoretical seepage rate of the earth-rock dam anti-seepage body.

4. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: Step S3 includes the following steps: A water measuring weir is set up at the downstream toe of the earth-rock dam, and a seepage flow measurement device is installed inside the water measuring weir to measure the actual seepage flow of the earth-rock dam; An apparent permeability coefficient is calculated, where the apparent permeability coefficient is the ratio of the actual permeability to the theoretical permeability.

5. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: Step S5 includes the following steps: If the defect coefficient of the anti-seepage system is greater than 1, it means that the anti-seepage body of the earth-rock dam has a certain degree of damage and defects during actual operation; If the defect coefficient of the anti-seepage system is less than or equal to 1, it means that the actual anti-seepage performance of the earth-rock dam anti-seepage body is higher than the design expectation.

6. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: The earth-rock dam anti-seepage body is a heterogeneous anti-seepage body, and the heterogeneous anti-seepage body includes multiple anti-seepage body parts. The theoretical seepage rate of the earth-rock dam anti-seepage body is the sum of the theoretical seepage rates of the multiple anti-seepage body parts. And / or the earth-rock dam anti-seepage body is a heterogeneous anti-seepage body, and the apparent permeability coefficient is the ratio of the actual seepage rate to the theoretical seepage rate, wherein the theoretical seepage rate is the relationship between the seepage rate and the upstream and downstream water levels when the permeability coefficient of the anti-seepage body is equal to the test value of the permeability coefficient.

7. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: The earth-rock dam anti-seepage body is a partitioned dam, which includes a plurality of anti-seepage body units. The theoretical seepage rate of the earth-rock dam anti-seepage body is the sum of the theoretical seepage rates of the anti-seepage body units.

8. The method for evaluating the seepage safety status of an earth-rock dam according to claim 1, wherein: In any analysis period, the average anti-seepage system defect coefficient Calculated by the following formula: Where, is the start time of the analysis period, is the end time of the analysis period, R is the defect coefficient of the anti-seepage system.

9. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for evaluating the seepage safety status of an earth-rock dam according to any one of claims 1 to 8 is implemented.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for evaluating the seepage safety status of an earth-rock dam according to any one of claims 1 to 8 is implemented.

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