In-situ evaluation method and device for deep leakage grouting repair effect of impermeable membrane

Abstract

The invention belongs to the technical field of seepage repair effect evaluation of seepage-proofing membranes in solid waste disposal facilities, and provides an in-situ evaluation method and device for a deep seepage grouting repair effect of a seepage-proofing membrane. The method comprises the following steps: mounting a closed cylinder, acquiring first recorded data, acquiring second recorded data, calculating a permeability coefficient, calculating a bonding strength coefficient, judging whether the repairing effect does not reach the standard, judging whether a first type of vulnerabilities occur or not, and judging whether a second type of vulnerabilities occur or not. According to the method, the bonding strength coefficient of the used repairing material can be detected in a complex environment through the first record data collected through air extraction, the permeability coefficient of the used repairing material can be detected in the complex environment through the second record data collected through pressure application, and the in-situ evaluation reliability of the repairing effect is improved; according to the method, the repair problem can be quickly identified through the judgment that the repair effect does not reach the standard, the first-class vulnerability occurs and the second-class vulnerability occurs, so that the evaluation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of evaluation of the repair effect of leakage of impermeable membranes in solid waste disposal facilities, and in particular to a method and device for in-situ evaluation of the repair effect of deep leakage grouting of impermeable membranes. BACKGROUND

[0002] There are a large number of solid waste disposal facilities such as landfills, waste slag fields and tailing ponds, and there is a common problem of damage to the bottom impermeable membrane, so leak detection and repair have become a hot topic, but there are few evaluation techniques for the repair effect of leaks. At present, the detection and repair techniques used for damaged leaks need to be differentiated according to the operating stage of the solid waste disposal facility, and among them, for leaks generated when the landfill is not in operation or the landfill garbage is shallow, direct welding repair is mainly used in combination with other methods such as electrical methods to judge the repair effect.

[0003] However, as the problem of impermeable membrane leakage becomes more and more serious after the landfill is in operation, the sensitivity of the traditional electrical method significantly decreases under deep coverage conditions, and conventional detection equipment is difficult to adapt to complex landfill environments, resulting in an increase in the actual demand for deep leakage detection and repair research. At present, cement, resin and other composite materials are mainly used to repair deep leaks, and it is necessary to evaluate the repair effect of the repair body in the garbage and leachate, but there is currently a lack of such in-situ evaluation techniques and methods. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide a method and device for in-situ evaluation of the repair effect of deep leakage grouting of impermeable membranes, which solves the problems of low evaluation sensitivity in complex environments and lack of evaluation of the repair effect of repair materials in the prior art evaluation methods.

[0005] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0006] A method for in-situ evaluation of the repair effect of deep leakage grouting of impermeable membranes, comprising:

[0007] aligning the closed cylinder and the repair area, and installing the closed cylinder on the repair area;

[0008] using a pressure extraction device to extract air from the closed cylinder to obtain first recorded data;

[0009] using a pressure device to apply pressure to the closed cylinder at a fixed rate to obtain second recorded data;

[0010] calculating the first recorded data using a bond strength coefficient formula to obtain a bond strength coefficient;

[0011] calculating the second recorded data using a permeability coefficient formula to obtain a permeability coefficient;

[0012] When the first record data is less than the target value, air in the closed cylinder is extracted, and if the newly collected first record data changes from a negative pressure reading to zero, the repair state of the repair area is determined as the repair effect being substandard;

[0013] When the first record data is greater than or equal to the target value, a negative pressure is applied to the closed cylinder, and if the zero return speed of the newly collected first record data exceeds the preset normal speed interval, the repair state is determined as a first type of vulnerability caused by applying high negative pressure to the repair body; the first type of vulnerability causes the pressure value in the closed cylinder to return to zero at a speed greater than or equal to the set air extraction speed;

[0014] When the first record data is greater than or equal to the target value, a negative pressure is applied to the closed cylinder, and if the zero return speed of the newly collected first record data belongs to the preset normal speed interval, the repair state is determined as a second type of vulnerability caused by applying high negative pressure to the repair body; the second type of vulnerability causes the pressure value in the closed cylinder to return to zero at a speed less than the set air extraction speed;

[0015] The permeability coefficient, the bonding strength coefficient, and the repair state are integrated to obtain an in-situ evaluation result of the deep leakage grouting repair effect.

[0016] Preferably, the closed cylinder is subjected to air extraction by using an air extraction device to obtain first record data, including:

[0017] The closed cylinder is subjected to air extraction by using an air extraction device to control the formation of a negative pressure environment inside the closed cylinder;

[0018] The pressure data of the closed cylinder is collected at a fixed frequency to obtain the first record data.

[0019] Preferably, the closed cylinder is subjected to air extraction by using an air extraction device to obtain first record data, including:

[0020] The closed cylinder and the repair area are aligned by using a light emitter, and the closed cylinder is installed on the repair area;

[0021] The closed cylinder is subjected to air extraction by using an air extraction device to control the formation of a negative pressure environment inside the closed cylinder;

[0022] The closed cylinder is subjected to bottom sealing by using a hydraulic counterweight sub-device to apply vertical pressure;

[0023] The internal air pressure of the closed cylinder is kept constant by injecting water into the interior of the closed cylinder, and the water level change value during the air pressure keeping process is recorded, and when the change rate of the water level change value is less than 5% for two consecutive times, the air pressure keeping process is stopped, and the second record data is obtained.

[0024] Preferably, the first record data is calculated by using a bonding strength coefficient formula to obtain the bonding strength, including:

[0025] The bonding strength coefficient formula is constructed, and the expression of the bonding strength coefficient formula is: ; wherein, is the bonding strength coefficient of the used material and the impermeable membrane; is the applied pressure of the pressure equipment;

[0026] The first record data is calculated by using the bonding strength coefficient formula to obtain the bonding strength coefficient.

[0027] Preferably, the second record data is calculated by using a permeation coefficient formula to obtain the permeation coefficient, including:

[0028] The permeation coefficient formula is constructed, and the expression of the permeation coefficient formula is: ; wherein, is the permeation coefficient of the used repair material; Q is the water quantity change value; is the thickness of the repair body; is the cross-sectional area; is the applied pressure of the pressure equipment; is the constant pressure determination time;

[0029] The second record data is calculated by using the permeation coefficient formula to obtain the permeation coefficient.

[0030] Preferably, the range of the negative pressure environment is 15kPa to 35kPa; the fixed rate is greater than or equal to 30L / min; and the range of the target value is 15kPa to 35kPa.

[0031] Preferably, the in-situ evaluation device for the repair effect of the impermeable membrane deep seepage grouting includes the closed cylinder, the rubber sealing ring, the water level recording sub-device, the hydraulic counterweight sub-device, the water injection pressure regulating sub-device, the integrated vacuum pressure pump, and the intelligent terminal.

[0032] The rubber sealing ring is attached to the bottom of the closed cylinder, the water level recording sub-device is arranged inside the closed cylinder, the hydraulic counterweight sub-device is fixed to the top of the closed cylinder, the water injection pressure regulating sub-device is connected to the top of the closed cylinder through a steel wire hose, the integrated vacuum pressure pump is connected to the top of the closed cylinder through a steel wire hose, and the intelligent terminal is connected to the hydraulic counterweight sub-device, the water injection pressure regulating sub-device and the integrated vacuum pressure pump through connection lines respectively.

[0033] Preferably, the height-to-diameter ratio of the closed cylinder ranges from 1:1.2 to 1:1.5.

[0034] Preferably, the light emitter is further included.

[0035] The light emitter is fixed at the center inside the top of the closed cylinder.

[0036] The light emitter is used to calibrate the alignment position of the closed cylinder and the repair area.

[0037] The present application discloses the following technical effects:

[0038] The present application provides a method and device for in-situ evaluation of the repair effect of deep seepage grouting of an anti-seepage membrane, which collects first and second recorded data through air extraction and pressure application, solves the problem of lack of evaluation of the repair effect of repair materials in the prior art, realizes testing of the permeability coefficient and the bonding strength coefficient of the repair materials in complex environments, solves the defect of slow evaluation of repair problems in complex environments in the prior art through evaluation of the repair effect, appearance of a first type of leakage and appearance of a second type of leakage, and realizes rapid identification of different repair problems. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0040] Figure 1 The present application provides a process diagram for in-situ evaluation of the repair effect of deep seepage grouting of an anti-seepage membrane.

[0041] Figure 2 The present application provides a structural diagram of a device for in-situ evaluation of the repair effect of deep seepage grouting of an anti-seepage membrane.

[0042] Figure 3The first case simulation line chart provided by the embodiment of the present application;

[0043] Figure 4 The second case simulation line chart provided by the embodiment of the present application;

[0044] Figure 5 The third case simulation line chart provided by the embodiment of the present application. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0046] The purpose of the present application is to provide a method and device for evaluating the in-situ effect of deep seepage grouting repair of anti-seepage membranes, to solve the problem of low evaluation sensitivity and lack of evaluation of the repair effect of repair materials in the existing evaluation method in complex environments.

[0047] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0048] Figure 1 The flowchart of the in-situ evaluation process of the deep seepage grouting repair effect of the anti-seepage membrane provided by the embodiment of the present application is shown in Figure 1 The present application provides an in-situ evaluation method for the deep seepage grouting repair effect of an anti-seepage membrane, which comprises:

[0049] Step 100: align the closed cylinder and the repair area, and install the closed cylinder on the repair area;

[0050] Step 200: use the pressure extraction equipment to extract air from the closed cylinder to obtain first recorded data;

[0051] Step 300: use the pressurizing equipment to apply pressure to the closed cylinder at a fixed rate to obtain second recorded data;

[0052] Step 400: calculate the first recorded data using a bonding strength coefficient formula to obtain a bonding strength coefficient;

[0053] Step 500: calculate the second recorded data using a permeability coefficient formula to obtain a permeability coefficient;

[0054] Step 600: When the first recorded data is less than the target value, air in the closed cylinder is extracted, and if the newly collected first recorded data changes from negative pressure reading to zero, the repair state of the repair area is determined as the repair effect being substandard;

[0055] Step 700: When the first recorded data is greater than or equal to the target value, negative pressure is applied to the closed cylinder, and if the zero return speed of the newly collected first recorded data exceeds the preset normal speed interval, the repair state is determined as a first type of vulnerability caused by applying high negative pressure to the repaired body; the first type of vulnerability causes the pressure value in the closed cylinder to return to zero at a speed greater than or equal to the set air extraction speed;

[0056] Step 800: When the first recorded data is greater than or equal to the target value, negative pressure is applied to the closed cylinder, and if the zero return speed of the newly collected first recorded data belongs to the preset normal speed interval, the repair state is determined as a second type of vulnerability caused by applying high negative pressure to the repaired body; the second type of vulnerability causes the pressure value in the closed cylinder to return to zero at a speed less than the set air extraction speed;

[0057] Step 900: The permeability coefficient, the bonding strength coefficient, and the repair state are integrated to obtain an in-situ evaluation result of deep leakage grouting repair effect.

[0058] Specifically, the air in the closed cylinder is extracted by using a pressure extraction device to obtain first recorded data, including:

[0059] The air in the closed cylinder is extracted by using a pressure extraction device to control the formation of a negative pressure environment inside the closed cylinder;

[0060] The pressure data of the closed cylinder is collected at a fixed frequency to obtain the first recorded data.

[0061] Further, the pressure extraction device is used to apply pressure to the closed cylinder at a fixed rate to obtain second recorded data, including:

[0062] The closed cylinder and the repair area are aligned by using a light emitter, and the closed cylinder is installed on the repair area;

[0063] The pressure extraction device is used to apply pressure to the closed cylinder at a fixed rate to control the formation of a positive pressure environment inside the closed cylinder;

[0064] The closed cylinder is sealed at the bottom by using a hydraulic counterweight sub-device by applying vertical pressure;

[0065] The internal air pressure of the closed cylinder is kept constant by injecting water into the interior of the closed cylinder, and the water level change value during the air pressure keeping process is recorded, and when the change rate of the water level change value is less than 5% for two consecutive times, the air pressure keeping process is stopped, and the second record data is obtained.

[0066] Specifically, the first record data is calculated by using a bonding strength coefficient formula to obtain the bonding strength, including:

[0067] The bonding strength coefficient formula is constructed, and the expression of the bonding strength coefficient formula is: ; wherein, is the bonding strength coefficient of the used material and the impermeable membrane; is the applied pressure of the pressure equipment;

[0068] The first record data is calculated by using the bonding strength coefficient formula to obtain the bonding strength coefficient.

[0069] Further, the second record data is calculated by using a permeability coefficient formula to obtain the permeability coefficient, including:

[0070] The permeability coefficient formula is constructed, and the expression of the permeability coefficient formula is: ; wherein, is the permeability coefficient of the used repair material; Q is the water quantity change value; is the thickness of the repair body; is the cross-sectional area; is the applied pressure of the pressure equipment; is the constant pressure determination time;

[0071] The second record data is calculated by using the permeability coefficient formula to obtain the permeability coefficient.

[0072] Optionally, the range of the negative pressure environment is 15kPa to 35kPa; the fixed rate is greater than or equal to 30L / min; and the range of the target value is 15kPa to 35kPa.

[0073] Reference Figure 2 A device for in-situ evaluation of the repair effect of impermeable membrane deep seepage grouting, comprising: a closed cylinder, a rubber sealing ring, a water level recording sub-device, a hydraulic counterweight sub-device, a water injection pressure regulating sub-device, an integrated vacuum pressure pump, and an intelligent terminal.

[0074] The rubber sealing ring is attached to the bottom of the closed cylinder; the water level recording sub-device is arranged inside the closed cylinder; the hydraulic counterweight sub-device is fixed to the top of the closed cylinder; the water injection pressure regulating sub-device is connected to the top of the closed cylinder through a steel wire hose; the integrated vacuum pressure pump is connected to the top of the closed cylinder through a steel wire hose; and the intelligent terminal is connected to the hydraulic counterweight sub-device, the water injection pressure regulating sub-device and the integrated vacuum pressure pump through connection lines respectively.

[0075] Further, the height-to-diameter ratio of the closed cylinder ranges from 1:1.2 to 1:1.5.

[0076] Further, the light emitter is further included.

[0077] The light emitter is fixed at the center inside the top of the closed cylinder.

[0078] The light emitter is used to calibrate the alignment position of the closed cylinder and the repair area.

[0079] Reference Figure 2 , the anti-seepage membrane leakage repair effect evaluation device designed in the embodiment includes an integrated vacuum cover, which is a closed cylinder made of 304 stainless steel. The height-to-diameter ratio of the device cylinder ranges from 1:1.2 to 1:1.5. A light emitter is installed at the center to ensure that the device is directly above the repair area. A flexible and air-tight annular rubber sealing ring is arranged at the bottom of the cylinder device to ensure the sealing of the membrane and the sealing ring in the case of uneven HDPE membrane. A water level recording sub-device is arranged inside the cylinder device, which has an accuracy of 0.1 mL. The device can automatically record water changes. Two steel wire hoses are fixedly connected at the top of the cylinder device (the connection is air-tight). The steel wire hoses are connected to an integrated vacuum pressure pump and a water injection pressure regulating sub-device respectively. The pump body is used to realize a positive / negative pressure environment, and the water injection pressure regulating sub-device ensures a constant pressure inside the cylinder. The integrated vacuum pressure pump is equipped with a 0.5-grade precision air pressure gauge for reading air pressure values. A hydraulic counterweight sub-device is arranged at the top of the cylinder device. Its main function is to ensure that the bottom of the cylinder is in close contact with the contact medium, so that no gas enters or exits the cylinder. The hydraulic counterweight sub-device, the water injection pressure regulating sub-device and the integrated vacuum pressure pump can be intelligently controlled through a computer terminal. Specifically, the hydraulic counterweight sub-device is controlled by the terminal system. The hydraulic rod of the hydraulic counterweight sub-device applies pressure to the top of the cylinder device to make the rubber ring at the bottom of the cylinder in close contact with the contact medium. At this time, the integrated vacuum pressure pump can be used to check whether there is air leakage, and the air pressure gauge pointer swing situation is observed. When there is no tendency for the pointer to swing, the positive pressure inflation and negative pressure suction can be performed by pressing the pump body switch button. The water level recording sub-device needs to be manually opened before the cylinder is placed.

[0080] Further, the positive pressure inflation:

[0081] S1: Positioning and installation. Align the center of the closed cylinder device with the light emitter directly above the repair area, maintain a gap distance of 5-10 mm from the bottom area, and ensure that the cylinder device completely covers the repair area. If the bottom contains a large amount of debris and filtrate, remove the debris and filtrate by appropriate means until it does not affect the positioning and installation of the cylinder device, and the area can contain a small amount of debris and filtrate;

[0082] S2: Pressure removal. Turn on the pressure pump and apply pressure to the inside of the cylinder at a rate less than or equal to 2 kPa / s, so that the gas inside the vacuum cover is compressed to form a positive pressure environment, and the debris and filtrate in the repair area are removed from the gap by air pressure;

[0083] S3: Sealing the cylinder. After the debris and filtrate in the repair area are removed, apply vertical pressure to the bottom of the cylinder through the hydraulic counterweight device to ensure that the cylinder is sealed. The pump body can be used to verify whether the cylinder is leaking;

[0084] S4: Water injection and pressure adjustment. According to the actual situation, a certain amount of water (uncontaminated water) is injected into the cylinder, and the constant pressure is maintained. If the air pressure decreases, the water injection and pressure adjustment device will continue to maintain the constant pressure;

[0085] S5: Data recording. Observe the changes in the air pressure gauge, and record the air pressure value every certain period of time through the terminal system (the recording time is 60 minutes or multiples thereof, and the air pressure value reading accuracy is 0.1 kPa). Observe the water level changes through the water level recording device. When the water level is basically stable (the change rate of the recorded value is within 5% for two consecutive times), the test can be stopped, and the last water level change value and the measurement time are taken as the measurement results;

[0086] S6: Data analysis. The results obtained by using the following formula are used to evaluate the repair effect of the materials used:

[0087]

[0088] In the formula, k represents the permeability coefficient of the repair material used; Q represents the water level change value, i.e. the leakage flow rate; D represents the thickness of the repair body; A represents the cross-sectional area of the repair body inside the cylinder device; H represents the pressure applied by the pressure pump, i.e. the air pressure gauge value; and T represents the constant pressure measurement time.

[0089] Further, negative pressure inhalation:

[0090] S1: Positioning and installation. Align the center of the closed cylinder device with the light emitter directly above the repair area, maintaining a distance of 5-10 mm from the bottom area, and ensure that the cylinder device completely covers the repair area. If the bottom contains a large amount of debris and filtrate, remove the debris and filtrate by appropriate means until it does not affect the positioning and installation of the cylinder device, and the area can contain a small amount of debris and filtrate.

[0091] S2: Negative pressure generation. Open the vacuum pump and extract air from the inside of the device to the outside through the steel wire hose (extraction speed greater than or equal to 30 L / min), gradually forming a negative pressure environment inside the vacuum cover, and finally the negative pressure value is required to be 15-35 kPa.

[0092] S3: Data recording. Observe the changes in the air pressure gauge, record the pressure gauge readings every 3 seconds through the terminal system, and draw a two-dimensional line graph.

[0093] S4: Data analysis. Use the following formula to calculate the results to evaluate the repair effect of the materials used:

[0094]

[0095] In the formula: F represents the pressure applied by the vacuum pump, i.e. the maximum value (absolute value) of the pressure gauge; A represents the contact area between the repair material and the impermeable membrane inside the vacuum cover.

[0096] Specifically, working condition analysis:

[0097] First case: When the vacuum pump is started, the air pressure gauge gradually shows negative pressure readings from zero, but at this time the air pressure gauge shows a value less than the target value (15-35 kPa), and after continuing to extract air, the air pressure gauge shows from negative pressure readings to zero, indicating that the repair material has completely repaired the leak, but the repair effect does not meet the requirements, and the simulated line graph is as follows Figure 3 .

[0098] Second case: When the vacuum pump is started, the air pressure gauge gradually shows negative pressure readings from zero, and at this time the air pressure gauge shows a value greater than or equal to the target value (15-35 kPa), indicating that the repair effect meets the requirements. If the negative pressure is applied again at this time, the air pressure gauge quickly returns to zero, indicating that the repair body has a leak due to the application of high negative pressure, and the simulated line graph is as follows Figure 4 .

[0099] The third case: when the vacuum pump is started, the air pressure gauge gradually displays a negative pressure reading from zero, and at this time, if the air pressure gauge displays a value greater than or equal to the target value (15kPa to 35kPa), it indicates that the repair effect meets the requirements, and if the air pressure gauge slowly returns to zero at this time, it indicates that a small hole appears in the repaired body due to the application of high negative pressure, and the simulation broken line graph is as follows: Figure 5 .

[0100] As an optional implementation, the embodiment also provides an electronic device, comprising: at least one processor, and a memory connected with the processor in communication; wherein the memory stores instructions capable of being executed by the processor, and the instructions are executed by the processor to enable the processor to execute the in-situ evaluation method for the repair effect of the deep leakage grouting of the anti-seepage membrane.

[0101] As an optional implementation, the embodiment also provides a non-transient computer readable storage medium storing computer instructions, and the computer instructions are used to enable a computer to execute the in-situ evaluation method for the repair effect of the deep leakage grouting of the anti-seepage membrane.

[0102] The beneficial effects of the present application are as follows:

[0103] The first recorded data collected by air extraction can be used to test the bonding strength coefficient of the repair material in a complex environment, and the second recorded data collected by applying pressure can be used to test the permeability coefficient of the repair material in a complex environment, thereby improving the reliability of the in-situ evaluation of the repair effect; through the repair effect not meeting the standard judgment, the first type of hole appearing judgment and the second type of hole appearing judgment, the repair problem can be quickly identified, and the evaluation efficiency is improved.

[0104] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0105] In this paper, specific examples are used to describe the principles and implementation modes of the present application, and the above description of the embodiments is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An in-situ evaluation method for the repair effect of deep leakage grouting of an anti-seepage membrane, characterized in that: include: Aligning the closed cylinder with the repair area, and installing the closed cylinder on the repair area; Using a pumping and pressure device to extract air from the closed cylinder to obtain first recorded data; applying pressure to the closed cylinder at a fixed rate using a pressurizing device to obtain second recorded data; Calculating the first recorded data using a bonding strength coefficient formula to obtain a bonding strength coefficient; Calculating the second recorded data using a permeability coefficient formula to obtain a permeability coefficient; When the first recorded data is less than the target value, the air in the closed cylinder is evacuated, and if the newly collected first recorded data changes from a negative pressure reading to zero, the repair status of the repair area is determined to be unsatisfactory repair effect; When the first recorded data is greater than or equal to the target value, negative pressure is applied to the closed cylinder, and if the zeroing speed of the newly collected first recorded data exceeds a preset normal speed range, the repair state is determined to be a type of leak in the repair body caused by the application of high negative pressure; The speed at which the pressure value in the closed cylinder returns to zero due to the first type of leak is greater than or equal to the set pumping speed; When the first recorded data is greater than or equal to the target value, negative pressure is applied to the closed cylinder; if the zeroing speed of the newly collected first recorded data falls within the preset normal speed range, the repair state is determined to be that the application of high negative pressure causes a type II leak in the repair body; The second type of leak causes the speed at which the pressure value in the closed cylinder returns to zero to be lower than the set air extraction speed; The permeability coefficient, the bonding strength coefficient and the repair status are integrated to obtain an in-situ evaluation result of the deep leakage grouting repair effect.

2. The in-situ evaluation method for the deep leakage grouting repair effect of an anti-seepage membrane according to claim 1 is characterized in that: The air in the closed cylinder is extracted using a pumping and pressure device to obtain first recorded data, including: Using a vacuum device to extract air from the closed cylinder to control the formation of a negative pressure environment inside the closed cylinder; The pressure data of the closed cylinder is collected at a fixed frequency to obtain the first recorded data.

3. The in-situ evaluation method for deep leakage grouting repair effect of an anti-seepage membrane according to claim 2 is characterized in that: Applying pressure to the closed cylinder at a fixed rate using a pressurizing device to obtain second recorded data, including: Using a light emitter, the closed cylinder and the repair area are aligned, and the closed cylinder is installed on the repair area; Applying pressure to the closed cylinder at a fixed rate using a pressurizing device to control the formation of a positive pressure environment inside the closed cylinder; A hydraulic counterweight device is used to apply vertical pressure to seal the bottom of the closed cylinder; The air pressure inside the closed cylinder is controlled to remain constant by injecting water into the closed cylinder, and the water level change value during the air pressure maintenance process is recorded. When the change rate of the water level change value is less than 5% for two consecutive times, the air pressure maintenance process is stopped to obtain the second recorded data.

4. The in-situ evaluation method for deep leakage grouting repair effect of an anti-seepage membrane according to claim 3 is characterized in that: The bonding strength coefficient formula is used to calculate the first recorded data to obtain the bonding strength, including: Construct the bonding strength coefficient formula; the expression of the bonding strength coefficient formula is: ;in, is the bonding strength coefficient between the material used and the anti-seepage membrane; Applying pressure to the pumping device; The bonding strength coefficient is calculated on the first recorded data using the bonding strength coefficient formula to obtain the bonding strength coefficient.

5. The in-situ evaluation method for deep leakage grouting repair effect of an anti-seepage membrane according to claim 4 is characterized in that: Calculating the second recorded data using a permeability coefficient formula to obtain a permeability coefficient includes: Construct the permeability coefficient formula; the expression of the permeability coefficient formula is: ;in, is the permeability coefficient of the repair material used; Q is the water volume change value; is the thickness of the repair body; is the cross-sectional area; applying pressure to the pressurizing device; is the constant pressure measurement time; The second recorded data is calculated using the permeability coefficient formula to obtain the permeability coefficient.

6. The in-situ evaluation method for deep leakage grouting repair effect of an anti-seepage membrane according to claim 5, characterized in that: The negative pressure environment ranges from 15 kPa to 35 kPa; the fixed rate is greater than or equal to 30 L / min; and the target value ranges from 15 kPa to 35 kPa.

7. An in-situ evaluation device for deep leakage grouting repair effect of anti-seepage membrane, characterized in that: The method for in-situ evaluation of the grouting repair effect of deep leakage of an anti-seepage membrane according to claim 1 comprises: the closed cylinder, a rubber sealing ring, a water level recording sub-device, a hydraulic counterweight sub-device, a water injection pressure regulating sub-device, an integrated vacuum pressure pump, and an intelligent terminal; The rubber sealing ring is attached to the bottom of the closed cylinder; the water level recording sub-device is arranged on the inside of the closed cylinder; the hydraulic counterweight sub-device is fixed on the top of the closed cylinder; the water injection and pressure regulating sub-device is connected to the top of the closed cylinder through a steel wire hose; the integrated vacuum pressure pump is connected to the top of the closed cylinder through a steel wire hose; the smart terminal is connected to the hydraulic counterweight sub-device, the water injection and pressure regulating sub-device, and the integrated vacuum pressure pump respectively through connecting lines.

8. The in-situ evaluation device for deep leakage grouting repair effect of an anti-seepage membrane according to claim 7, characterized in that: The ratio of the height to the diameter of the closed cylinder is in the range of 1:1.2 to 1:1.

5.

9. The in-situ evaluation device for deep leakage grouting repair effect of an anti-seepage membrane according to claim 8, characterized in that: Also includes: Light emitter; The light emitter is fixed at the center of the inner side of the top of the closed cylinder; The light emitter is used to calibrate the alignment position of the closed cylinder and the repair area.

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