Clay core wall type dam stabilizing method and system based on electroosmosis pulse

Abstract

The invention discloses a clay core wall type dam stabilizing method and system based on electroosmosis pulses. A core wall is arranged in a dam body of a clay core wall type dam; a plurality of pairs of electrodes are arranged between the core wall and the upstream face of the dam in the length direction of the dam; after electroosmosis pulses are applied to the electrodes, an anti-seepage electric field is formed between the core wall and the upstream face, so that an intangible anti-seepage wall is formed, water is prevented from leaking to the dam and the outer side of the dam, and the stability of the dam is facilitated. The stability of the dam can be improved.

Description

Technical Field

[0001] The invention relates to a clay core wall type dam stabilization system and method based on electroosmotic pulse. Background Art

[0002] Clay core dam is an earth-rock dam that uses a low-permeability clay body filled in the center of the dam body as an anti-seepage device. This type of dam is anti-seepage by a core wall or an inclined core wall; the upstream and downstream dam shells support the core wall to maintain the stability of the dam body; a drainage prism is set at the downstream dam foot to protect the dam foot from scouring. Another function of the drainage prism is to ensure that the water seeping out of the dam is clear water.

[0003] The key to the stability of this type of dam is to keep the core wall playing its due role.

[0004] The clay core rockfill dam of the prior art includes a dam foundation, a dam medium cover, an anti-seepage curtain, a clay core, an upstream filter layer, an upstream transition layer, an upstream transition layer, an upstream rockfill area, an upstream block rock slope protection, an upstream backfill slag area, a downstream filter layer, a downstream transition layer, a downstream rockfill area, a downstream block rock slope protection, a downstream slag backfill area, a horizontal cushion layer, a dam crest road, and a wave-breaking wall is set on the upstream side of the dam crest road. The quality requirements of the clay core anti-seepage soil material are generally less than 40% in liquid limit, 10-20 in plasticity index, and 15%-40% in clay content to meet the existing specification requirements.

[0005] To achieve the stability of the clay core wall dam, it is not only necessary to optimize the design from the structure of the dam body, but also necessary to make comprehensive considerations from other aspects (such as suppressing seepage), so as to further enhance the stability of the dam body.

[0006] The Chinese patent with publication number 217384618U discloses a flood embankment monitoring and anti-seepage system based on electroosmotic pulses, in which positive and negative electrodes are inserted into the embankment to maintain the water content of the flood embankment within a certain range, so as not to be too high or too low, and has a certain effect on solving the problem of high-water level floods infiltrating the rammed earth dam body and causing dam breaches or pipe bursts. However, due to the large distance between the positive and negative electrodes, and the voltage used should not be too high (generally not exceeding 36V safe voltage), this solution is not very effective in resisting water molecule leakage.

[0007] Therefore, it is necessary to design a new system and method for stabilizing clay core dams. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a clay core wall type dam stabilization system and method based on electroosmotic pulses, which can realize the detection of the dam slope state and the implementation of active stabilization measures.

[0009] The technical solution of the invention is as follows:

[0010] A clay core wall type dam stabilization system based on electroosmotic pulse, wherein a core wall is arranged in the dam body of the clay core wall type dam; a plurality of pairs of electrodes are arranged between the core wall and the water-facing surface of the dam along the length direction of the dam;

[0011] After applying electroosmotic pulses to the electrodes, an anti-seepage electric field is formed between the core wall and the water-facing surface, thus forming an invisible anti-seepage wall, which prevents water from leaking into the dam and the outside of the dam, thus facilitating the stability of the dam.

[0012] Each pair of electrodes includes a positive electrode rod and a negative electrode rod, and the distance between the positive electrode rod and the negative electrode rod is within 2 meters (taking the electroosmotic pulse output voltage level of 36V and below as an example).

[0013] Multiple pairs of electrodes are divided into K groups; K is an integer, K≥3; each group of electrodes includes at least 3 pairs of electrodes; a pulse generator is used to implement group control on the K groups of electrodes (to avoid excessively long wiring and to facilitate zoning management and control).

[0014] Multiple electrodes are also arranged on the water-facing slope.

[0015] The multiple electrodes are arranged in the following way: the water-facing slope of the dam is divided into M rows and N columns of grid areas in a grid shape; M≥3, N≥3; at least one set of positive and negative electrodes is set in each grid area; the positive and negative electrodes are vertically inserted in the water-facing slope of the dam; the positive and negative electrodes are connected to the pulse generator; the pulse generator is controlled by the control center. The dam protection system also includes a data acquisition terminal (MCU data processing unit) for collecting current data flowing through each positive and negative electrode to feed back to the control center;

[0016] The length of the overlapping portion of the positive and negative electrodes of adjacent columns is L; L is 30-100 cm, preferably 50 cm.

[0017] The bottom ends of the positive and negative electrodes in each set of positive and negative electrodes are aligned;

[0018] Different rows of grid areas use different pulse voltage levels. The pulse voltage level of the grid area with a large depth (i.e. the number of rows or rows, counted from top to bottom) is higher than that of the grid area with a small depth. The higher the water pressure, the higher the voltage. The maximum is no more than 36V. The minimum is 12V. The middle can be 24V, or other voltages, such as 16V, etc.

[0019] The area of ​​the grid area shall not exceed 50 square meters.

[0020] A clay core dam stabilization method based on electroosmotic pulses adopts the aforementioned clay core dam stabilization system to form an impermeable layer between the core wall and the water-facing slope of the dam, which can be called a reverse impermeable layer, or an invisible impermeable wall, to prevent excessive water from entering the dam body (keeping the water content of the dam body medium within a stable range), thereby ensuring the stability of the dam body.

[0021] The dam is equipped with a pulse generator, which is connected to an electrode. In each heavy electrode, the negative electrode is on the side close to the water body (the water-facing side), and the positive electrode is on the side away from the water body (the water-facing side). The dam stabilization system also includes a data acquisition terminal (MCU data processing unit) for collecting current data flowing through each positive and negative electrode to feed back to the control center. The pulse generator sends out electroosmotic pulses through the electrode. The electrode is inserted into the base of the dam. It also includes a control center, which is connected to N pulse generators through a CAN bus communication. The control center can be an industrial computer or a master control device based on DSP or PLC. It is also called a host.

[0022] The pulse output of each grid area is controlled in sequence; for example, only the grid area in the first column outputs pulses during t1, only the grid area in the second column outputs pulses during t2, and only the grid area in the third column outputs pulses during t3. The water in the dam body is controlled to move in an orderly manner under the action of electroosmotic force. This ensures the stability of the water content of the dam body medium and the safety of the dam body.

[0023] Each pulse generating unit is connected to multiple positive electrodes and multiple negative electrodes; in the pulse generating unit, the MCU serves as the main control unit, and the MCU controls the pulse generator to generate a pulse signal of a preset frequency, duty cycle and voltage value through a pulse driving circuit, and a first current sampling resistor is provided on the wire connecting the pulse generator to each positive electrode; a second current sampling resistor is provided on the wire connecting the pulse generator to each negative electrode; the voltage sampling signals generated on the first current sampling resistor and the second current sampling resistor enter the MCU after passing through their respective corresponding amplification circuits and A / D conversion circuits, thereby completing data collection;

[0024] Different working units in different rows use different voltages. The pulse frequency is generally 4Hz, and the frequency range is:

[0025] 2-10Hz.

[0026] The system is usually activated in advance before a flood arrives.

[0027] The dam protection system also includes a bus, a plurality of pulse generating units are mounted on the bus, the pulse generating units include a pulse generator and electrodes for generating a pulse sequence, the electrodes include a positive electrode and a negative electrode; the electrodes are arranged on the dam slope;

[0028] The pulse sequence of each cycle consists of three parts: a positive pulse segment (positive voltage pulse), a negative pulse segment (negative voltage pulse) and a pause segment (zero voltage pulse); wherein: the positive pulse causes the cations and the water molecules bound to them to move from the anode side to the cathode side, which is opposite to the direction induced by the hydraulic gradient, preventing water from penetrating into the dam; the negative voltage pulse allows a certain amount of water to be controlled in the dam as an electroosmotic medium to avoid excessive drying of the dam body; the pause segment provides sufficient response time for the positive and negative pulses to enable the system to reach a new equilibrium state.

[0029] The pulse generating unit applies electroosmotic pulses to electrodes arranged in the dam slope, so that the water content in the dam medium is stabilized, thereby keeping the dam body in an optimal stable state.

[0030] It also includes an IoT platform and a monitoring center. The monitoring center is connected to the IoT platform and mounted on the bus. The monitoring center and the IoT platform are connected through the MQTT mechanism. MQTT (Message Queuing Telemetry Transport) refers to message queue telemetry transmission.

[0031] The bus is a CAN bus.

[0032] Each pulse generating unit is connected to a plurality of positive electrodes and a plurality of negative electrodes.

[0033] In the pulse generating unit, the MCU serves as the main control unit. The MCU controls the pulse generator to generate a pulse signal with a preset frequency, duty cycle and voltage value through a pulse driving circuit. A first current sampling resistor is provided on the wire connected to each positive electrode of the pulse generator; a second current sampling resistor is provided on the wire connected to each negative electrode of the pulse generator;

[0034] The voltage sampling signals generated on the first current sampling resistor and the second current sampling resistor respectively pass through the corresponding amplification circuit and A / D conversion circuit and then enter the MCU to complete data collection.

[0035] MCU data conversion mainly converts analog signals into binary format, and then digitally filters, classifies, stores, and encodes them into CAN communication protocol format and sends them to the bus via the CAN controller.

[0036] An alarm is installed at the monitoring center or the pulse generating unit.

[0037] The negative electrode is a negative electrode rod, and the positive electrode adopts a zinc tube positive electrode; the negative electrode net or negative electrode rod is arranged along the slope surface where the dam contacts the water body; the zinc tube positive electrode is inserted into the structure of the dam, and the pulse generator is arranged on the dam.

[0038] The current data collected by the pulse generating unit at the dam site is used to determine the water content of the dam slope, thereby realizing the status monitoring of the dam slope.

[0039] When the current is higher than the preset value, the duty cycle of the electroosmotic pulse is increased to reduce the water content of the dam slope and achieve active stability of the dam slope. When the water content exceeds 20%, the positive pulse width increases by 5 milliseconds every 6 hours and the negative pulse decreases by 2 milliseconds until the water content drops by 20%. The positive pulse width decreases by 5 milliseconds every 6 hours and the negative pulse increases by 2 milliseconds to maintain the stability of the water content of the slope. The setting range of electroosmotic pulse parameters: positive pulse width 100-200ms, negative pulse width 5-150ms, frequency 3 to 5Hz.

[0040] If the current is higher than the preset alarm value, the monitoring center or pulse generating unit will start the alarm, such as sound and light alarm, telephone alarm, etc.

[0041] The principle of electroosmotic pulse to stabilize the dam:

[0042] The pulse sequence consists of three parts: a positive pulse segment (positive voltage pulse), a negative pulse segment (negative voltage pulse) and a pause segment (zero voltage pulse). The positive pulse causes the cations and their bound water molecules to move from the anode side to the cathode side, which is exactly opposite to the direction induced by the hydraulic gradient, preventing water from penetrating into the dam. As the hydrated cations form a double electric layer along the capillary wall, polarization leads to a reduction in flow; the negative voltage pulse allows a certain amount of water to be controlled in the dam medium to avoid excessive drying of the dam body. Under the action of the electroosmotic pulse, a polarization effect will be produced on the water molecules: hydrogen gathers into a polarized cathode, and hydroxyl gathers into a polarized anode. The high-speed moving cations and anions floating in the capillary fluid between the double electric layers will reverse, and the anode will become the cathode and the cathode will become the anode.

[0043] The positive voltage pulse has the longest pulse time and the signal amplitude is usually between 12 V and 36 V DC. The use of a bipolar pulse waveform can prevent the dam media from over-drying and losing structural integrity.

[0044] One of the most critical aspects of this technology is the negative voltage pulse. This allows the moisture content inside the dike medium to be controlled, thus preventing the electroosmotic medium from drying out too much and subsequently degrading. The anode is inserted inside the structure, while the cathode is placed directly outside the structure in the soil. The positive and negative pulses lead to the occurrence of some chemical reactions in the electrolysis process. At the same time, the rest phase (no voltage applied) allows the system to reach equilibrium.

[0045] Beneficial effects:

[0046] The clay core wall type dam stabilization system and method based on electroosmotic pulse of the present invention have the following characteristics:

[0047] First, a front anti-seepage barrier based on multiple electrodes is set up on the water-facing surface; because the span of the earth dam slope is large and the distance of electroosmosis is limited, multiple electrodes need to be set up, and by switching the circuit, water leakage in one direction is controlled to ensure the stability of the water content of the dam. Multiple groups of corresponding positive and negative electrodes are buried along the slope of the dam body on the water-facing surface. The bottom ends of the positive and negative electrodes are aligned, and the distance between the positive and negative electrodes is preferably within 2 meters. From the top of the dam, the top of the next group of positive electrodes should be about 50 cm different from the bottom of the next group of negative electrodes, and so on to the bottom of the dam. Along the lateral extension or natural direction of the dam body, the positive and negative electrode control area is divided into independent working groups, and the control area does not exceed 50 square meters. Based on the different flood heights, different voltages can be used from the top of the dam to the bottom of the dam to resist different water pressures. When the flood recedes, the voltage can be gradually adjusted according to different water levels. The system is started and operated uniformly 3 months before the flood.

[0048] In addition, on the dam, anti-seepage facilities based on multiple pairs of electroosmotic electrodes are set between the core wall and the water-facing surface to form a second anti-seepage barrier;

[0049] The present invention makes full use of the basic principle of electroosmotic pulses, and monitors the moisture content and its changing trend in the clay core wall dam in real time through electric current. It can not only implement early warning, but also, by adjusting the pulse parameters, implement active prevention and control for the dam slope. It has low cost and convenient deployment, and has significant economic benefits (cost advantages) and social benefits.

[0050] The core of the present invention is to set up a double-layer anti-seepage barrier (one is to use multiple electrodes to form a continuous electric field in the water-facing slope of the dam, thereby forming a continuous leakage blocking layer, and the other is an anti-seepage electrode located inside the dam), which effectively prevents water molecules from leaking into the dam body, thereby achieving the goal of stabilizing the dam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the layout of the clay core wall type dam stabilization system based on electroosmotic pulse of the present invention (vertical cross-sectional view, without multiple electrodes arranged on the water-facing surface);

[0052] Figure 2 It is a schematic diagram of the layout of the clay core wall type dam stabilization system based on electroosmotic pulse of the present invention (top view, without multiple electrodes arranged on the water-facing surface);

[0053] Figure 3 It is a schematic diagram of the layout of the clay core wall type dam stabilization system based on electroosmotic pulse of the present invention (top view, multiple electrodes are arranged on the water-facing surface);

[0054] Figure 4 is a schematic diagram of electrode grouping arrangement;

[0055] Figure 5It is the control circuit block diagram;

[0056] Figure 6 It is a schematic diagram of the arrangement of electrodes on the water-facing surface;

[0057] Figure 7 It is the electrical control block diagram;

[0058] Figure 8 Schematic diagram of the structure of the positive electrode rod (front cross-sectional view);

[0059] Fig. 9 This is the overall block diagram of the electroosmotic pulse system;

[0060] Fig.10 This is a schematic diagram of data acquisition in the electroosmotic pulse system;

[0061] Fig.11 is a schematic diagram of a pulse generating unit;

[0062] Fig.12 It is a pulse waveform diagram.

[0063] Explanation of numbers: 1-dam body, 2-core wall, 3-positive electrode, 4-anti-seepage electric field, 5-negative electrode, 6-copper core wire, 7-conductive PE layer, 8-conductive mortar, 9-zinc pipe, 10-pointed cone; 11-water facing surface, 12-water body, 13-sub-control area, 13-multiple electrodes. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0065] Example 1: Figure 1 , a clay core wall type dam stabilization system based on electroosmotic pulse, a clay core wall type dam is provided with a core wall in the dam body; multiple pairs of electrodes are arranged along the length direction of the dam between the core wall and the water-facing side of the dam; since the negative electrode rod is close to the water-facing side and the positive electrode rod is close to the back-facing side, after applying electroosmotic pulses to the electrodes, an anti-seepage electric field is formed between the core wall and the water-facing side, which can effectively inhibit water molecules from leaking through the dam body to the back side (back-facing side) of the dam body, thereby facilitating the stabilization of the dam. Each pair of electrodes includes a positive electrode rod and a negative electrode rod, and the distance between the positive electrode rod and the negative electrode rod is within 2 meters (taking the output voltage level of the electroosmotic pulse as 36V and below as an example.).

[0066] like Figure 2 , multiple pairs of electrodes are divided into 3 groups; each group of electrodes includes 3 pairs of electrodes; a pulse generator is used to implement group control on the 3 groups of electrodes (to avoid too long wiring and to facilitate partition management and control.).

[0067] The system also includes a control center, multiple pulse generators and multiple sets of positive and negative electrodes; (Multiple electrode layout refers to the layout of multiple sets of positive and negative electrodes in gradients;)

[0068] Multiple electrodes are also arranged on the water-facing slope, such as Figure 4 The water-facing slope of the dam is divided into grids, with 9 grid areas in 3 rows and 3 columns. Three groups of positive and negative electrodes are set in each grid area. The positive and negative electrodes are vertically inserted in the water-facing slope of the dam. The negative electrode rod is close to the water-facing side, and the positive electrode rod is close to the back water side. The positive and negative electrodes are connected to the pulse generator. The pulse generator is controlled by the control center.

[0069] When the pulse voltage adopts a voltage level of 36V or below, the distance between the positive and negative poles in each group of positive and negative poles is within 2 meters.

[0070] The length of the overlapping portion of the positive and negative electrodes of adjacent columns is L; L is 50 cm.

[0071] The bottom ends of the positive and negative electrodes in each set of positive and negative electrodes are aligned.

[0072] Different rows of grid areas use different pulse voltage levels. The pulse voltage level of the grid area with a large depth (i.e. the number of rows or rows, counted from top to bottom) is higher than that of the grid area with a small depth. The higher the water pressure, the higher the voltage. The voltages of the 1st to 3rd rows are 12V, 24V and 36V respectively. The different voltage levels are determined by Figure 3 The first driving circuit, the second driving circuit and the third driving circuit are provided respectively.

[0073] The area of ​​the grid area shall not exceed 50 square meters.

[0074] The pulse output of each grid area is controlled in sequence; for example, only the grid area in the first column outputs pulses during t1, only the grid area in the second column outputs pulses during t2, and only the grid area in the third column outputs pulses during t3. T1 (or t2, t3) can be a value between 1-100s; the time is cycled in sequence; the water in the dam body is controlled to move in an orderly manner under the action of electroosmotic force. This ensures the stability of the water content of the dam body medium and the safety of the dam body.

[0075] Each pulse generating unit is connected to multiple positive electrodes and multiple negative electrodes; in the pulse generating unit, the MCU serves as the main control unit, and the MCU controls the pulse generator to generate a pulse signal of a preset frequency, duty cycle and voltage value through a pulse driving circuit, and a first current sampling resistor is provided on the wire connecting the pulse generator to each positive electrode; a second current sampling resistor is provided on the wire connecting the pulse generator to each negative electrode; the voltage sampling signals generated on the first current sampling resistor and the second current sampling resistor enter the MCU after passing through their respective corresponding amplification circuits and A / D conversion circuits, thereby completing data collection;

[0076] A method for stabilizing a clay core dam based on electroosmotic pulses adopts the aforementioned dam protection system to implement active protection of the dam.

[0077] In this system, the pulse frequency is 4Hz.

[0078] The system is usually activated in advance before a flood arrives.

[0079] Furthermore, the monitoring center is communicatively connected to the plurality of pulse generating units;

[0080] Each pulse generating unit includes a pulse generator and a positive electrode and a negative electrode connected to the pulse generator, the positive electrode and the negative electrode are both arranged on the clay core wall dam, and the pulse generating unit collects current data from the positive electrode and the negative electrode as a pulse generating unit; the pulse generator is used to generate an electroosmotic pulse;

[0081] The monitoring center is used to collect the current data sampled by each pulse generating unit and process the data, so as to realize the monitoring of the state of the dam slope and implement active stability control of the dam slope based on the electroosmotic pulse.

[0082] It also includes an Internet of Things platform, and the monitoring center is connected to the Internet of Things platform in communication. The monitoring center and the Internet of Things platform are connected in communication through the MQTT (Message Queuing Telemetry Transport) mechanism.

[0083] The monitoring center is connected with multiple pulse generating units via CAN bus communication.

[0084] In the pulse generating unit, the MCU serves as the main control unit. The MCU controls the pulse generator to generate a pulse signal with a preset frequency, duty cycle and voltage value through a pulse driving circuit. A first current sampling resistor is provided on the wire connected to the positive electrode of the pulse generator; a second current sampling resistor is provided on the wire connected to the negative electrode of the pulse generator;

[0085] The voltage sampling signals generated on the first current sampling resistor and the second current sampling resistor respectively pass through the corresponding amplification circuit and A / D conversion circuit and then enter the MCU to complete data collection.

[0086] MCU data conversion mainly converts analog signals into binary format, and then digitally filters, classifies, stores, and encodes them into CAN communication protocol format and sends them to the bus via the CAN controller.

[0087] An alarm is installed at the monitoring center or the pulse generating unit.

[0088] The negative electrode is a negative electrode rod, and the positive electrode is a zinc tube positive electrode.

[0089] Specifically, the monitoring center uses a system screen, which is a touch screen with an embedded operating system. It is used to view the data status of various sites and the safety indicators of the dam. If necessary, relevant parameters can be set.

[0090] When the system is working, the water content of the dam slope is determined by the current data collected by the pulse generating unit, so as to realize the status monitoring of the dam slope.

[0091] When the current is higher than the preset value, the duty cycle of the electroosmotic pulse is increased to reduce the water content of the dam slope and achieve active stabilization of the dam slope.

[0092] The specific control method is: when the moisture content exceeds 20%, the positive pulse width increases by 5 milliseconds every 6 hours, and the negative pulse decreases by 2 milliseconds, until the moisture content drops by 20%, the positive pulse width decreases by 5 milliseconds every 6 hours, and the negative pulse increases by 2 milliseconds to keep the moisture content of the slope stable.

[0093] The setting range of electroosmotic pulse parameters is as follows: positive pulse width 100-200ms, negative pulse width 5-150ms, and frequency 3 to 5Hz.

[0094] If the current is higher than the preset alarm value, the monitoring center or pulse generating unit will start the alarm, such as sound and light alarm, telephone alarm, etc.

[0095] The structure of the rod-shaped electrode as the positive electrode is as follows Figure 4 As shown, the outer layer of the rod electrode adopts a zinc tube with a certain structural strength. The zinc tube is not only highly corrosion-resistant, but also has excellent conductivity. It can continuously provide cations under the action of electroosmosis to form hydrated cations. The front end of the rod electrode adopts a conical structure, which is convenient for easily passing through the soil and rock layer under the action of applied pressure, and is convenient for burying inside the dam. The current transmission adopts an inner core copper wire, and the outer conductive PE is used as the conduction of the positive current. The gap between the conductive PE and the zinc tube is filled with conductive mortar. This structure can effectively ensure the strength of the far-end electroosmotic field without attenuation. The conductive mortar is filled to ensure good contact between the conductive PE and the zinc tube. A heat shrink sleeve can also be set at the upper end of the rod electrode to prevent the overflow of the conductive mortar.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clay core dam stabilization system based on electroosmotic pulse, characterized in that: A core wall is provided in the dam body of the clay core wall type dam; a plurality of pairs of electrodes are provided between the core wall and the water-facing surface of the dam along the length direction of the dam; After applying electroosmotic pulses to the electrodes, an anti-seepage electric field is formed between the core wall and the water-facing surface, thus forming an invisible anti-seepage wall, which prevents water from leaking into the dam and the outside of the dam, thus facilitating the stability of the dam.

2. The clay core wall type dam stabilization system based on electroosmotic pulse according to claim 1 is characterized in that: Each pair of electrodes includes a positive electrode rod and a negative electrode rod, and the distance between the positive electrode rod and the negative electrode rod is within 2 meters (taking the electroosmotic pulse output voltage level of 36V and below as an example).

3. The clay core type dam stabilization system based on electroosmotic pulse according to claim 1 is characterized in that: Multiple pairs of electrodes are divided into K groups; K is an integer, K≥3; each group of electrodes includes at least 3 pairs of electrodes; a pulse generator is used to implement group control on the K groups of electrodes (to avoid excessively long wiring and to facilitate zoning management and control).

4. The clay core type dam stabilization system based on electroosmotic pulse according to any one of claims 1 to 3, characterized in that: Multiple electrodes are also arranged on the water-facing slope.

5. The clay core type dam stabilization system based on electroosmotic pulse according to claim 4 is characterized in that: The multiple electrodes are arranged in the following manner: the water-facing slope of the dam is divided into M rows and N columns of grid areas in a grid shape; M≥3, N≥3; at least one set of positive and negative electrodes is set in each grid area; the positive and negative electrodes are vertically inserted in the water-facing slope of the dam; the positive and negative electrodes are connected to the pulse generator; the pulse generator is controlled by the control center. The dam protection system also includes a data acquisition terminal for collecting current data flowing through each positive and negative electrode to feed back to the control center; The length of the overlapping part of the positive and negative electrodes of adjacent columns is L; The bottom ends of the positive and negative electrodes in each set of positive and negative electrodes are aligned; Different rows of grid areas use different pulse voltage levels, and the pulse voltage level of the grid area with a large depth (ie, the number of rows or rows, counted from top to bottom) is higher than the pulse voltage level of the grid area with a small depth. The area of ​​the grid area shall not exceed 50 square meters.

6. A method for stabilizing a clay core dam based on electroosmotic pulses, characterized in that: The clay core wall type dam stabilization system described in any one of claims 1 to 5 is used to form an impermeable layer between the core wall and the water-facing slope of the dam to prevent excessive water from entering the dam body (keeping the water content of the dam body medium within a stable range), thereby ensuring the stability of the dam body.

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