Earth and rock dam leakage detection patrol and rescue method

Abstract

The application discloses a kind of earth-rock dam leakage detection patrol and rescue method, which comprises the following steps: S1: rapid identification;S2: accurate positioning;S3: plugging seepage.The application uses the technical equipment system of leakage danger rapid identification, accurate positioning and efficient disposal, constructs online information integration management visual decision support system platform, perfects the earth-rock dam leakage rescue technology system, realizes the rapid identification, accurate positioning and efficient disposal of earth-rock dam danger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dam seepage monitoring, early warning and prevention, in particular to a soil and rock dam seepage detection and rescue method. BACKGROUND

[0002] The seepage of soil and rock dams has the characteristics of concealment, spatiotemporal randomness and initial magnitude subtlety. The time from the occurrence of seepage danger to the serious damage of the dam is often very limited. Therefore, timely detection and accurate positioning of seepage hazards are the key to ensuring the safety of soil and rock dams.

[0003] The seepage of soil and rock dams and the dammed lake danger induced water-related disasters have always been one of the major natural disasters in China. Although efforts have been made in the past two decades to reinforce the large and medium-sized dangerous reservoirs and the embankments along the main streams of major rivers, the problems of some small and medium-sized soil and rock dams and embankments along the main and branch streams of small and medium-sized river basins are still very prominent.

[0004] Soil and rock dam projects are an important part of the flood control system and an important guarantee for people's life and social production. Therefore, it is necessary to develop a soil and rock dam seepage detection and rescue method. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a soil and rock dam seepage detection and rescue method. The method uses a full-chain technical integration application of "seepage danger rapid identification-accurate positioning-high efficiency disposal", builds a soil and rock dam seepage rapid rescue technical system, and realizes the systematization of the soil and rock dam seepage rescue technical system.

[0006] To achieve the above purpose, the soil and rock dam seepage detection and rescue method provided by the present application comprises the following steps:

[0007] S1: rapid identification

[0008] S101: using long-endurance unmanned aerial dual-optical patrol equipment combined with a temperature correlation pattern based on soil and rock dam seepage and infrared images, automatically identifying suspected seepage points according to the infrared images collected by the long-endurance unmanned aerial dual-optical patrol equipment;

[0009] S102: determining whether the suspected seepage point is real by artificial online judgment, and querying the position coordinates of the suspected seepage point infrared image;

[0010] S103: flying to the coordinate point by long-endurance unmanned aerial dual-optical patrol equipment to conduct close-range dual-optical fine review on the suspected seepage point;

[0011] S104: detecting the danger of embankment leakage with the ultra-wideband distributed optical fiber sensing equipment, burying the temperature measuring optical fiber at the backwater side slope toe and using the ultra-wideband distributed optical fiber sensing equipment to monitor in real time, quickly identifying the abnormal seepage area of the earth and rockfill dam according to the obtained temperature measuring curve;

[0012] S2: accurate positioning

[0013] S201: on the basis of quickly identifying the abnormal seepage area of the earth and rockfill dam, using the leakage inlet detection equipment to accurately position the leakage channel and accurately obtain the inlet channel position and scale information;

[0014] S202: combining the channel scale inversion device based on comprehensive tracing to accurately position the leakage channel;

[0015] S203: using the three-dimensional tomographic scanning detection equipment to detect the position and range of the leakage inlet and the leakage channel, and realizing the spatial positioning of the leakage channel;

[0016] S3: plugging and seepage guiding

[0017] S301: using the intelligent hanging tank feeding plugging equipment to accurately feed the composite water-absorbing resin particles in the leakage inlet channel on the upstream of the leakage inlet, and instantaneously plugging the leakage inlet;

[0018] S302: using high-permeability high-polymer material to fill the leakage channel in the middle of the leakage channel, and instantaneously plugging the leakage channel;

[0019] S303: carrying out construction on the downstream of the leakage, and using the seepage guiding material to guide and drain the seepage water after the leakage inlet and the channel are instantaneously plugged.

[0020] As a preferred embodiment, in the step 101, the unmanned aerial dual-light patrol detection equipment includes a dual-light holder, the dual-light holder is integrated with an infrared detector and a visible light detector, the infrared detector and the visible light detector respectively collect infrared images and visible light images under the same field of view, the collected infrared images and visible light images are subjected to infrared-visible light dual-light image fusion analysis, the infrared abnormal area information and position information of the earth and rockfill dam are obtained, and the suspected leakage point is automatically identified.

[0021] As a preferred embodiment, in the step 104, the temperature measuring optical fiber is buried to a depth of 10-15 cm, 24-hour all-weather monitoring is carried out every day, a temperature measuring curve is output, and the leakage outlet range is obtained from the abnormal area shown on the temperature measuring curve.

[0022] As a preferred embodiment, in the step 301, the composite water-absorbing resin particle sealing material is a mixture of graded river sand and water-absorbing expansion material resin in a mass ratio of (10-15):1, wherein the particle size of the water-absorbing expansion material resin is <5 mm, and the water absorption ratio is >10 times.

[0023] As a preferred embodiment, in the step 302, the high-permeability polymer material comprises A component slurry and B component slurry.

[0024] The A component slurry comprises the following raw materials in a mass ratio of 13-18 parts of phthalic anhydride-based polyester polyol, 25-30 parts of chlorine element flame retardant tris(1-chloro-2-propyl) phosphate, 4-8 parts of AK-8810 surfactant, 1-3 parts of triethylenediamine, and 1-3 parts of potassium hydroxide.

[0025] The B component slurry comprises the following raw materials in a mass ratio of 30-40 parts of isocyanate and 10-20 parts of dibutyl phthalate plasticizer.

[0026] As a preferred embodiment, in the step 302, the construction method for temporarily sealing the leakage passage by using the high-permeability polymer material to fill the leakage passage comprises the following steps.

[0027] a. Detecting and determining the position of the leakage passage, determining the drilling position on the earth and rockfill dam according to the permeation passage, and drilling to complete the arrangement of the processing points of the leakage passage;

[0028] b. Assembling the polymer grouting device, and lowering the grouting pipe into the corresponding drill hole, adjusting the corresponding grouting position, and starting grouting;

[0029] c. After the high-permeability polymer material reaction reaches the set requirement, repeating steps a and b to perform grouting work on the next drill hole.

[0030] As a preferred embodiment, in the step 302, the grouting comprises the following steps.

[0031] (1) Drilling grouting holes: the grouting hole position is selected to intersect the bottom of the hole and the leakage passage, the grouting holes are distributed on both sides of the leakage passage, and the holes are drilled alternately in a plum blossom shape;

[0032] (2) Lowering the grouting pipe: using a PPR grouting pipe to lower into the grouting hole;

[0033] (3) Grouting: using a clamp to clamp the injection gun and the injection cap tightly, and through the material conveying pipeline, the A and B component slurries of the high-permeability polymer material are conveyed to the injection gun mouth at a ratio of 1:1, the two component materials are conveyed to the leakage position through the grouting hole at the injection gun mouth, and the leakage passage is filled and the leakage water is sealed; during grouting, the pressure is divided into several stages, and gradually increased to the final specified value.

[0034] (4) Grouting pressure control: the lowest level of pressure is used for grouting during construction, and the initial pressure is 0.1-0.3 MPa; then, the grouting is carried out in a step-by-step increasing manner, and when the grout flows out of the grouting hole or the grout cannot be injected, the grouting is stopped;

[0035] (5) Observation: after the construction area operation is completed, the grouting plugging situation is observed, and if new leakage points appear near the grouting position, drilling and supplementary injection are carried out in time until no obvious leakage occurs;

[0036] (6) End of grouting: after the grouting is completed, the leakage plugging situation is observed, and if no obvious leakage occurs, it is finished.

[0037] As a preferred embodiment, in the step 303, a downstream ditching and drainage seepage integrated complete equipment construction linear drainage ditch is used downstream of the seepage.

[0038] As a preferred embodiment, in the step 303, a water-permeable hose and sand and gravel are used as the drainage seepage material.

[0039] Compared with the prior art, the present application has the following advantages:

[0040] Firstly, the soil and rock dam leakage detection and rescue method uses the integrated application of the whole chain technical equipment of "leakage risk rapid identification, accurate positioning and plugging and seepage", constructs an online information integrated management visual decision support system platform, perfects the soil and rock dam leakage rescue technology system, realizes the rapid identification, accurate positioning and efficient disposal of the soil and rock dam risk, and improves the level of emergency disposal of major natural disasters in China. Aiming at the rescue needs of soil and rock dam leakage natural disasters, the rescue technology short board is filled up, and the flood and drought disaster defense capability is improved.

[0041] Secondly, in the soil and rock dam leakage detection and rescue method, the rapid identification uses technical equipment such as pre-buried temperature measurement optical fiber and unmanned aerial vehicle carrying infrared thermal imager, realizes the rapid monitoring and measurement of soil and rock dam seepage, finally establishes the monitoring information identification criteria and method of abnormal seepage area of soil and rock dam, completes the interpretation of seepage information, and then realizes the rapid identification of abnormal seepage area of soil and rock dam, and lays a foundation for the accurate positioning of local abnormal points.

[0042] Thirdly, in the soil and rock dam leakage detection and rescue method, the accurate positioning is firstly analyzed and determined on the basis of rapid identification of abnormal seepage area, then, aiming at the leakage hidden danger with greater harm, based on numerical simulation and model test, the leakage inlet channel detection technical equipment based on electric method + tracing method is developed, the accurate positioning and scale inversion are realized. The leakage position coordinates, path size and other information are provided for the next efficient plugging and seepage disposal, and the basic data support is also provided for the disposal scheme decision.

[0043] Fourthly, the plugging and seepage guiding in the earth and rock dam seepage detection patrol and rescue method of the present application, on the premise of accurate positioning of the seepage area, based on the treatment principle of "plugging upstream and discharging downstream", the upstream inlet uses multi-level particle material with strong practicability, the middle channel develops high-permeability polymer material and integrated pipeline grouting process, and the downstream outlet applies seepage guiding material structure and integrated laying equipment. On the basis of the existing seepage position, path size and treatment scheme, the three together realize efficient treatment of seepage danger. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 It is a flowchart of an earth and rock dam seepage detection patrol and rescue method. DETAILED DESCRIPTION

[0045] The implementation of the present application will be described in detail below in conjunction with the embodiments, but they do not constitute a limitation on the present application, but only serve as an example. At the same time, the advantages of the present application will become clearer and easier to understand through the description.

[0046] The earth and rock dam seepage detection patrol and rescue method of the present embodiment comprises the following steps:

[0047] S1: rapid identification. Using long-endurance unmanned aerial dual-light patrol equipment combined with temperature correlation mode based on earth and rock dam seepage and infrared image, using long-endurance aerial dual-light patrol equipment, the unmanned aerial vehicle carries infrared thermal imager equipment using dual-light gimbal, which mainly integrates an infrared detector and a visible light detector, and can simultaneously collect infrared and visible light images under the same field of view. Infrared-visible light dual-light image fusion analysis is performed on the collected patrol images to obtain dam infrared abnormal area information and position information. The infrared image collected by the long-endurance unmanned aerial dual-light patrol equipment automatically identifies the suspected seepage point. After online judgment by artificial, it is judged whether the place really exists seepage. The position coordinates of the unmanned aerial image are queried. The aerial dual-light patrol equipment flies to the coordinate point to conduct close-range dual-light fine review on the suspected seepage point.

[0048] The dam leakage danger is detected by using the ultra-wideband distributed optical fiber sensing equipment, the temperature measuring optical fiber is buried at the slope foot of the backwater side, and the ultra-wideband distributed optical fiber sensing equipment is used for monitoring. The temperature measuring optical fiber embedded in the structure measures the temperature by using Raman scattering, and the contact position of the saturated and unsaturated soil body can be determined by the inflection point of the temperature change of the optical fiber, so as to identify the seepage position of the earth and rockfill dam, and provide position and leakage range information for the next accurate positioning. The temperature measuring optical fiber is buried about 10 cm deep and monitored all day long, and the PCA-ICA based optical fiber seepage signal interpretation method is used to calculate the signal-to-noise ratio of the optical fiber sensing signal (based on the non-Gaussian and Gaussian coupling characteristics of the earth and rockfill dam optical fiber sensing source information), effectively retain the signal change characteristics, provide reliable temperature information for interpretation, effectively separate the temperature component caused by seepage, and output the temperature measuring curve of the ultra-wideband distributed optical fiber sensing equipment. The abnormal area reflected on the temperature measuring curve is used to obtain the leakage outlet range. The temperature measuring optical fiber embedded in the structure, unmanned aerial vehicle carrying infrared thermal imager and other technical equipment are used to realize the rapid monitoring and patrol of the earth and rockfill dam seepage. Finally, the monitoring information identification criteria and method of the abnormal seepage area of the earth and rockfill dam are established, the seepage information is interpreted, and the rapid identification of the abnormal seepage area of the earth and rockfill dam is realized, which lays a foundation for the accurate positioning of the local abnormal points in the next step.

[0049] S2: accurate positioning. First, based on the rapid identification of the leakage point outlet position, the leakage channel accurate positioning is carried out by using the leakage inlet detection equipment, the inlet channel position and scale information are accurately obtained, and the channel scale parameter inversion device based on comprehensive tracing is combined to realize the tomographic imaging accurate positioning of the leakage channel. The three-dimensional tomographic scanning detection equipment is used to detect the position and range of the leakage inlet and the leakage channel, and realize the spatial positioning of the leakage channel.

[0050] After realizing the rapid identification of the abnormal seepage area of the earth and rockfill dam, for the leakage hidden danger with greater harm, the spatial positioning device based on electrical tomography is a multifunctional direct current electrical tomography scanning detection device developed by combining the detection characteristics of tomographic scanning technology, multi-channel potential monitoring and collection, visual real-time operation system, field programmable array logic and other electronic communication technologies. The channel scale parameter inversion device based on comprehensive tracing is a device for obtaining the scale parameters of the leakage channel by using artificial tracers and temperature testing of groundwater force parameters. The three-dimensional tomographic scanning detection equipment is used to detect the position and range of the leakage inlet and the leakage channel, and realize the spatial positioning of the leakage channel. The leakage position coordinates, path size and other information are provided for the next efficient plugging and permeation treatment, and the basic data support is also provided for the treatment scheme decision.

[0051] S3: Block the infiltration. After accurately positioning and obtaining the location and size information of the inlet channel, based on the treatment principle of "blocking the upper part and draining the lower part", the intelligent hanging tank feeding equipment for inlet infiltration instantaneous blocking is used to accurately place the multi-grade composite water-absorbing resin particles (a mixture of graded river sand and water-absorbing expansion material resin, wherein the particle size of the water-absorbing expansion material resin is <5mm, the water absorption ratio is >10 times, and the mass ratio of the mixture is sand: water-absorbing expansion material = 10:1) in the leakage inlet channel, to achieve instantaneous blocking of the inlet.

[0052] The grouting process using channel blocking, the middle channel uses grouting equipment to pour high-permeability high-polymer grouting material (A component slurry mainly composed of phthalic polyester polyol, chloro element flame retardant tris (1-chloro-2-propyl) phosphate (TCPP), AK-8810 surfactant and tertiary amine catalyst triethylene diamine and metal catalyst potassium hydroxide, B component slurry mainly composed of isocyanate and phthalic acid dibutyl ester (BPO) plasticizer) into the seepage channel, to achieve instantaneous blocking of the leakage channel. Preferably, the A component slurry includes the following raw materials in mass fraction: 13-18 parts of phthalic polyester polyol, 25-30 parts of chloro element flame retardant tris (1-chloro-2-propyl) phosphate, 4-8 parts of AK-8810 surfactant, 1-3 parts of triethylene diamine, and 1-3 parts of potassium hydroxide; the B component slurry includes the following raw materials in mass fraction: 30-40 parts of isocyanate, and 10-20 parts of phthalic acid dibutyl ester plasticizer.

[0053] The blocking construction method includes the following steps: a, detecting and determining the position of the leakage channel, determining the drilling position according to the seepage channel on the earth and rockfill dam, and drilling to complete the layout of the treatment points of the leakage channel; b, assembling the high-polymer grouting device, and lowering the grouting pipe into the corresponding drill hole, adjusting the corresponding grouting position, and starting grouting; c, after the high-polymer reaction reaches the set requirement, repeating steps a and b to perform grouting operation of the next drill hole.

[0054] The high-permeability high-polymer grouting material grouting and specific construction process steps are as follows:

[0055] (1) Drill grouting holes: The selection of grouting hole position should make the hole bottom intersect with the leakage channel, and the grouting holes should be distributed on both sides of the leakage channel, alternating drilling, and the shape is in the shape of plum blossom; the drilling technical requirements are as follows: ① accurately determine the hole position according to the technical requirements, gently press, slowly, and prevent the hole from being inclined and drilling in the wrong direction; ② drill to a certain depth and install the grouting pipe; ③ prevent the drill from being bent and causing hole collapse or rod breakage accident during drilling; ④ if broken zone is encountered during drilling, stop drilling, first carry out pressure grouting, and then continue drilling.

[0056] (2) Lower the grouting pipe: according to the high-polymer grouting technical requirements, use PPR grouting pipe to lower into the grouting hole;

[0057] (3) Grouting: using a clamp to clamp the injection gun with the injection cap to prevent the high polymer material from being sprayed out during grouting. A and B two-component high polymer materials (1:1) are respectively transported to the injection gun port through the conveying pipeline, the two materials are transported to the leakage through the grouting hole at the injection gun port, and chemical reaction occurs to achieve the purpose of filling the leakage channel and plugging the leakage water. When grouting, the pressure is divided into several stages, and gradually increased to the final specified value;

[0058] (4) Grouting pressure control: the lowest level of pressure is used for pressure injection during construction, and the initial pressure is 0.1-0.3MPa. With the continuous injection of slurry, the flow rate of the slurry is observed, and the grouting pressure can be gradually increased according to the actual situation during grouting, but the grouting pressure should not be increased all the time, and the grouting should be carried out in a stepwise manner. When the slurry flows out of the grouting hole or the slurry cannot be injected, stop grouting;

[0059] (5) Observation: after the construction area operation is completed, the grouting plugging situation is observed, and if new leakage points appear near the grouting position, drilling and supplementary injection are carried out in time until no obvious leakage occurs;

[0060] (6) End of grouting: after grouting is completed, the leakage plugging situation is observed, and if no obvious leakage water appears, the grouting device can be cleaned. The downstream ditching and drainage seepage integrated complete equipment is used for construction downstream of the leakage point, and the drainage seepage material (linear drainage ditch, drainage seepage structure material is water permeable hose + sand and gravel) is used for drainage seepage of the downstream seepage after the import and channel transient plugging treatment. With the help of the comprehensive technical system based on transient plugging and downstream drainage seepage, on the basis of the existing leakage position, path size and treatment scheme, the three together realize efficient disposal of leakage danger.

[0061] The device parameters used in the soil and rock embankment leakage detection and rescue method of the embodiment are shown in Table 1.

[0062] Table 1

[0063]

[0064] The above is only a specific embodiment of the present application, and any skilled person in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. The rest not described in detail belongs to the prior art.

Claims

1. A method for detecting, inspecting, and responding to seepage in earth-rock dams, characterized in that: The method comprises the following steps: S1: rapid identification S101: using long-endurance unmanned aerial dual-light patrol equipment combined with temperature correlation mode based on earth and rock dam leakage and infrared image, automatically identifying suspected leakage points according to the infrared image collected by the long-endurance unmanned aerial dual-light patrol equipment; S102: judging whether the suspected leakage point is real leakage through artificial online judgment, and querying the position coordinates of the suspected leakage point infrared image; S103: flying to the coordinate point by the long-endurance unmanned aerial dual-light patrol equipment to perform close-range dual-light fine review on the suspected leakage point; S104: detecting dam leakage danger by using ultra-wideband distributed optical fiber sensing equipment, burying temperature measuring optical fibers at the backwater side slope toe, and using the ultra-wideband distributed optical fiber sensing equipment to perform real-time monitoring, rapidly identifying abnormal seepage zones of earth and rock dams according to the obtained temperature measuring curve; S2: accurate positioning S201: on the basis of the rapid identification of the earth and rock dam abnormal seepage zone, using a leakage inlet detection equipment to accurately position the leakage channel and accurately obtain the inlet channel position and scale information; S202: combining a channel scale inversion device based on comprehensive tracing to perform tomographic imaging accurate positioning of the leakage channel; S203: using a three-dimensional tomographic scanning detection device to detect the position and range of the leakage inlet and the leakage channel, and realizing spatial positioning of the leakage channel; S3: plugging and seepage guiding S301: using an intelligent hanging tank feeding plugging equipment to accurately feed the composite water-absorbing resin particle plugging material in the leakage inlet channel, and instantaneously plugging the leakage inlet; S302: using a high-permeability high-polymer material to fill the leakage channel in the middle part of the leakage channel, and instantaneously plugging the leakage channel; S303: using a downstream ditching and drainage seepage integrated equipment to perform construction on the downstream of the leakage, and using the drainage seepage material to guide and drain the downstream seepage after instantaneously plugging the leakage channel through the leakage inlet and the channel.

2. The method according to claim 1, wherein the method further comprises: In the step 101, the unmanned aerial dual-light patrol equipment comprises a dual-light gimbal, the dual-light gimbal is integrated with an infrared detector and a visible light detector, the infrared detector and the visible light detector respectively collect infrared images and visible light images under the same field of view, infrared-visible light dual-light image fusion analysis is performed on the collected infrared images and visible light images, earth and rock dam infrared abnormal region information and position information are obtained, and suspected leakage points are automatically identified.

3. The method according to claim 2, wherein the method further comprises: In the step 104, the temperature measuring optical fiber is buried to a depth of 10-15 cm, 24-hour all-weather monitoring is performed every day, a temperature measuring curve is output, and the leakage outlet range is obtained from the abnormal area shown on the temperature measuring curve.

4. The method according to claim 1, wherein the method further comprises: In the step 301, the composite water-absorbing resin particle plugging material is a mixed material of graded river sand and water-absorbing expansion material resin in a mass ratio of (10-15):1, the particle size of the water-absorbing expansion material resin is less than 5 mm, and the water absorption ratio is greater than 10 times.

5. The method for detecting, patrolling and rescuing of earth-rock dam leakage according to claim 1, characterized in that: In the step 302, the high-permeability high-polymer material comprises A component slurry and B component slurry. The A component slurry comprises the following raw materials in mass fraction: 13-18 parts of phthalic anhydride polyester polyol, 25-30 parts of chlorine element flame retardant tris (1-chloro-2-propyl) phosphate, 4-8 parts of AK-8810 surfactant, 1-3 parts of triethylene diamine, and 1-3 parts of potassium hydroxide; The B component slurry comprises the following raw materials in mass fraction: 30-40 parts of isocyanate, and 10-20 parts of dibutyl phthalate plasticizer.

6. The method of claim 1, wherein the method further comprises: In the step 302, the construction method for instant sealing of the leakage passage by using high-permeability polymer material to fill the leakage passage comprises the following steps: a. Detecting and determining the position of the leakage passage, determining the drilling position on the earth and rockfill dam according to the permeation passage, and drilling to complete the arrangement of the processing point of the leakage passage; b. Assembling the polymer grouting device, and lowering the grouting pipe into the corresponding drill hole, adjusting the corresponding grouting position, and starting grouting; c. After the reaction of the high-permeability polymer material reaches the set requirement, repeating steps a and b to perform grouting operation of the next drill hole.

7. The method according to claim 6, wherein the method further comprises: determining the location of the leakage point; and determining the location of the leakage point by using the location of the leakage point and the location of the monitoring point. In the step 302, the grouting comprises the following steps: (1) Drilling grouting holes: the grouting hole position is selected to intersect the bottom of the hole and the leakage passage, and the grouting holes are distributed on both sides of the leakage passage, and the holes are drilled alternately in a plum blossom shape; (2) Lowering the grouting pipe: using a PPR grouting pipe to lower into the grouting hole; (3) Grouting: using a clamp to clamp the injection gun and the injection cap, and through the material conveying pipeline, the A and B component slurries of the high-permeability polymer material are conveyed to the injection gun mouth at a ratio of 1:1, and the two component materials are conveyed to the leakage position through the grouting hole at the injection gun mouth, filling the leakage passage and sealing the leakage water; during grouting, the pressure is divided into several stages, and gradually increased to the final specified value; (4) Grouting pressure control: during construction, the lowest level of pressure is used for pressure injection, and the initial pressure is 0.1-0.3 MPa; then, the grouting is performed in a step-by-step increasing manner, and when the slurry flows out of the grouting hole or the slurry cannot be injected, the grouting is stopped; (5) Observation: after the construction area operation is completed, the grouting sealing condition is observed, and if new leakage points appear near the grouting position, drilling and supplementary grouting are performed in time until no obvious leakage occurs; (6) End of grouting: after grouting is completed, the leakage sealing condition is observed, and if no obvious leakage water appears, the grouting is completed.

8. The method of claim 1, wherein the method further comprises: In the step 303, the downstream ditching and drainage seepage integrated complete equipment is used to construct a linear drainage ditch downstream of the leakage.

9. The method according to claim 1, wherein the method further comprises: determining the location of the leakage source by using the leakage detection device; and determining the location of the leakage source by using the leakage detection device. In the step 303, the drainage material is a water permeable hose and sand and gravel.

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