Earth and rockfill dam leakage detection patrol and rescue method

Abstract

The invention discloses an earth-rockfill dam leakage detection patrol and rescue method. The method comprises the following steps: S1, rapid identification; s2, accurate positioning; and S3, plugging and seepage guiding. According to the invention, a technical equipment system for rapid identification, accurate positioning and efficient disposal of leakage dangerous cases is utilized to construct an online information integrated management visual decision support system platform, an earth-rock dam leakage rescue technical system is perfected, and rapid identification, accurate positioning and efficient disposal of earth-rock dam dangerous cases are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of levee leakage monitoring, early warning and prevention, and specifically relates to a method for detecting, inspecting and rush-repairing seepage of earth-rock dams. Background Art

[0002] The seepage of earth-rock dams has characteristics such as concealment, spatio-temporal randomness, and small initial magnitude. The time from the occurrence of seepage danger to the serious damage of the dam is often very limited. Timely discovery and accurate positioning of seepage hidden dangers are the keys to ensuring the safety of earth-rock dams.

[0003] The water-related disasters caused by seepage of earth-rock dams and danger situations of barrier lakes have always been one of the major natural disasters plaguing our country. Although the reinforcement of large and medium-sized dangerous reservoirs and main river levees has been strengthened in the past two decades, due to the wide coverage, the problems existing in some small and medium-sized earth-rock dams and tributary levees of small and medium-sized river basins are still very prominent.

[0004] As an important part of the flood control system, earth-rock dam projects are important guarantees for people's livelihood and social production. Therefore, it is necessary to develop a method for detecting, inspecting and rush-repairing seepage of earth-rock dams. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above background art, and provide a method for detecting, inspecting and rush-repairing seepage of earth-rock dams. This method adopts the technical integration application of the whole chain of "rapid identification of seepage danger - precise positioning - efficient disposal", constructs a rapid rush-repair technology system for seepage of earth-rock dams, and realizes the systematization of the rush-repair technology system for seepage of earth-rock dams.

[0006] To achieve the above purpose, a method for detecting, inspecting and rush-repairing seepage of earth-rock dams provided by the present invention includes the following steps:

[0007] S1: Rapid Identification

[0008] S101: Use a long-endurance unmanned aerial vehicle (UAV)-borne dual-light survey equipment in combination with the temperature correlation mode between seepage of earth-rock dams and infrared images. According to the infrared images collected by the long-endurance UAV-borne dual-light survey equipment, automatically identify the suspected seepage points;

[0009] S102: Through manual online judgment, judge whether there is actual seepage at the suspected seepage point, and query the position coordinates of the infrared image of the suspected seepage point;

[0010] S103: Use the long-endurance UAV-borne dual-light survey equipment to fly to the coordinate point to conduct a close-range dual-light fine review of the suspected seepage point;

[0011] S104: Detect the dike seepage danger using an ultra-wide area distributed optical fiber sensing equipment. Bury temperature-measuring optical fibers at the toe of the backwater slope and use the ultra-wide area distributed optical fiber sensing equipment for real-time monitoring. According to the obtained temperature-measuring curve, quickly identify the abnormal seepage area of the earth-rock dam;

[0012] S2: Precise positioning

[0013] S201: On the basis of the quickly identified abnormal seepage area of the earth-rock dam, use the seepage inlet detection equipment to precisely locate the seepage channel, and accurately obtain the position and scale information of the inlet channel;

[0014] S202: Combine with the channel scale inversion device based on comprehensive tracer to precisely locate the seepage channel by tomographic imaging;

[0015] S203: Use a three-dimensional tomographic scanning detection device to detect the position and scope of the seepage inlet and seepage channel, and realize the spatial positioning of the seepage channel;

[0016] S3: Plugging and guiding seepage

[0017] S301: Use an intelligent hanging tank feeding and plugging equipment to accurately place the composite water-absorbing resin particle plugging material at the seepage inlet channel upstream of the seepage inlet to instantaneously plug the seepage inlet;

[0018] S302: Use a highly permeable polymer material to pour into the seepage channel in the middle of the seepage channel to instantaneously plug the seepage channel;

[0019] S303: Carry out construction on the downstream of the seepage. After the seepage channel is instantaneously plugged through the seepage inlet and the channel using the drainage and seepage guiding material, guide and drain the downstream seepage water.

[0020] As a preferred implementation manner, in the step 101, the unmanned aerial vehicle (UAV)-borne dual-light surveying equipment includes a dual-light pan-tilt head. The dual-light pan-tilt head is integrated with an infrared detector and a visible light detector. The infrared detector and the visible light detector are respectively used to collect infrared images and visible light images in the same field of view. Perform infrared-visible light dual-light image fusion analysis on the collected infrared images and visible light images to obtain the information and position information of the infrared abnormal area of the earth-rock dam, and automatically identify the suspected seepage points.

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

[0022] As a preferred embodiment, in the step 301, the composite water-absorbing resin particle plugging material is a mixture of graded river sand and water-absorbing and swelling material resin with a mass ratio of (10 to 15):1. Among them, the particle size of the water-absorbing and swelling 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 includes component A slurry and component B slurry;

[0024] The component A slurry includes the following raw materials according to the mass fraction ratio: 13 to 18 parts of phthalic anhydride polyester polyol, 25 to 30 parts of chlorine element flame retardant tris(1-chloro-2-propyl) phosphate, 4 to 8 parts of AK-8810 surfactant, 1 to 3 parts of triethylenediamine, 1 to 3 parts of potassium hydroxide;

[0025] The component B slurry includes the following raw materials according to the mass fraction ratio: 30 to 40 parts of isocyanate, 10 to 20 parts of dibutyl phthalate plasticizer.

[0026] As a preferred embodiment, in the step 302, the construction method of using the high-permeability polymer material to be poured into the leakage channel for instantaneous plugging of the leakage channel includes the following steps:

[0027] a. Detect and determine the position of the leakage channel, determine the drilling position on the earth-rock dam according to the penetration channel, and drill to complete the layout of the treatment points of the leakage channel;

[0028] b. Assemble the polymer grouting device, lower the grouting pipe into the corresponding drill hole, adjust the corresponding grouting position, and start grouting;

[0029] c. After the reaction of the high-permeability polymer material reaches the set requirements, repeat steps a and b to perform the grouting operation of the next drill hole.

[0030] As a preferred embodiment, in the step 302, the grouting includes the following steps:

[0031] (1) Drill grouting holes: The position of the grouting holes is selected where the bottom of the hole intersects with the leakage channel. The grouting holes are distributed on both sides of the leakage channel, and the holes are drilled alternately in a plum blossom shape;

[0032] (2) Lower the grouting pipe: Use a PPR grouting pipe to lower it into the grouting hole;

[0033] (3) Grouting: Use a clamp to firmly clamp the injection gun and the injection cap. Through the feeding pipeline, the component A and component B slurries of the high-permeability polymer material are respectively transported to the injection nozzle at a ratio of 1:1. The two component materials are transported to the leakage point through the grouting hole at the injection nozzle to fill the leakage channel and plug the seepage water; during grouting, the pressure is divided into several stages and gradually increased to the final specified value;

[0034] (4) Grouting pressure control: During construction, initially use the lowest level of pressure for grouting, with the initial pressure being 0.1 - 0.3 MPa; then, gradually increase the pressure in stages for grouting. Stop grouting when the slurry flows out of the grouting hole or the slurry cannot be injected.

[0035] (5) Observation: After the operation in the construction area is completed, pay attention to observing the grouting plugging situation. If new leakage points appear near the grouting area, drill holes for supplementary grouting in a timely manner until there is no obvious leakage.

[0036] (6) End of grouting: After grouting is completed, observe the leakage plugging situation. If there is no obvious leakage of water, it is okay.

[0037] As a preferred implementation manner, in step 303, a linear drainage ditch is constructed for the downstream of the leakage using an integrated complete set of equipment for downstream ditch excavation and drainage integration.

[0038] As a preferred implementation manner, in step 303, the drainage and seepage materials are permeable hoses and gravel materials.

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

[0040] Firstly, for the method of detecting, inspecting and emergency rescue of earth-rock dam leakage in the present invention, by using the integrated application of a whole-chain technical equipment of "rapid identification, precise positioning, plugging and seepage drainage of leakage hazards", an online information integration management and visualization decision support system platform is constructed, the leakage emergency rescue technology system for earth-rock dams is improved, the rapid identification, precise positioning and efficient disposal of earth-rock dam leakage hazards are realized, and the emergency disposal level of major natural disasters in China is improved. In response to the emergency rescue needs of earth-rock dam leakage natural disasters, the short board of emergency rescue technology is made up, and the ability to prevent and control floods and droughts is enhanced.

[0041] Secondly, in the method of detecting, inspecting and emergency rescue of earth-rock dam leakage in the present invention, for rapid identification, technical equipment such as structure-embedded temperature-measuring optical fibers and unmanned aerial vehicle (UAV)-mounted infrared thermal imagers are used to realize the rapid monitoring and inspection of earth-rock dam seepage flow; finally, a monitoring information identification criterion and method for abnormal seepage flow areas of earth-rock dams are established, the interpretation of seepage flow information is completed, and then the rapid identification of abnormal seepage flow areas of earth-rock dams is realized, laying a foundation for the precise positioning of the next local abnormal points.

[0042] Thirdly, for the precise positioning in the method of detecting, inspecting and emergency rescue of earth-rock dam leakage in the present invention, first, based on rapid identification, the abnormal seepage flow area is analyzed and determined. Then, for the leakage hidden dangers with greater hazards, an exploration technology equipment for leakage inlet channels based on electrical method + tracer method is developed based on numerical simulation and model tests to realize precise positioning and scale inversion. It provides information such as leakage position coordinates and path size for the next efficient plugging and seepage drainage disposal, and also provides basic data support for the decision-making of the disposal plan.

[0043] Fourthly, for plugging and guiding seepage in the method for detecting, inspecting and emergency repairing of seepage in earth-rock dams of the present invention, on the premise of accurately positioning the seepage area, based on the treatment principle of "plugging from above and draining from below", multi-graded granular materials with strong practicability are used at the upstream inlet, high-permeability polymer materials and integrated pipe grouting technology are developed for the middle channel, and drainage seepage material structures and integrated integrated laying equipment are applied at the downstream outlet. On the basis of the existing leakage position, path size and treatment plan, the three jointly achieve the efficient treatment of leakage emergencies. Description of the Drawings

[0044] Figure 1 It is a schematic flow chart of a method for detecting, inspecting and emergency repairing of seepage in earth-rock dams. Detailed Embodiment

[0045] The following describes the implementation of the present invention in detail with reference to the embodiments, but they do not constitute a limitation to the present invention, and are only for illustration. At the same time, the advantages of the present invention will become clearer and easier to understand.

[0046] A method for detecting, inspecting and emergency repairing of seepage in earth-rock dams in this embodiment includes the following steps:

[0047] S1: Quick identification. Use a long-endurance unmanned aerial vehicle (UAV)-borne dual-light surveying and mapping equipment in combination with the temperature correlation mode between the seepage of earth-rock dams and infrared images. Use a long-endurance airborne dual-light surveying and mapping equipment. The UAV is equipped with an infrared thermal imager and uses a dual-light pan-tilt head. This pan-tilt head mainly integrates an infrared detector and a visible light detector, and can simultaneously collect infrared images and visible light images in the same field of view. Perform infrared-visible light dual-light image fusion analysis on the collected surveying and mapping images to obtain the information and position information of the infrared abnormal area of the dam. The infrared images collected by the long-endurance UAV-borne dual-light surveying and mapping equipment are automatically identified by the identification model to identify suspected leakage points. Then, through manual online judgment, it is judged whether there is actually leakage at this place. Query the position coordinates of the UAV image. The airborne dual-light surveying and mapping equipment flies to the coordinate point to conduct a close-range dual-light fine review of the suspected leakage point.

[0048] Using an ultra-wideband distributed optical fiber sensing equipment to detect the seepage danger of dikes, a temperature measurement optical fiber is buried at the toe of the downstream slope and the ultra-wideband distributed optical fiber sensing equipment is used for monitoring. The temperature measurement optical fiber pre-embedded in the structure measures the temperature using Raman scattering. The contact position between the saturated and unsaturated soil can be determined through the inflection point of the temperature change of the optical fiber, realizing the identification of the seepage position of the earth-rock dam and providing the position and seepage range information for the next accurate positioning. The buried depth of the temperature measurement optical fiber is about 10 cm, and 24-hour all-weather monitoring is carried out. Combining with the optical fiber seepage measurement signal interpretation method based on PCA-ICA to calculate and improve the signal-to-noise ratio of the optical fiber sensing signal (based on the non-Gaussian and Gaussian coupling characteristics of the optical fiber sensing source information of the earth-rock dam), effectively retaining the signal change characteristics, providing reliable temperature information for interpretation, effectively separating the temperature component caused by seepage. The ultra-wideband distributed optical fiber sensing equipment outputs a temperature measurement curve, and the seepage outlet range is obtained from the abnormal area reflected on the temperature measurement curve. Using technical equipment such as temperature measurement optical fibers pre-embedded in the structure and infrared thermal imagers carried by unmanned aerial vehicles, rapid monitoring and patrol of the seepage of earth-rock dams are realized. Finally, a monitoring information identification criterion and method for the abnormal seepage area of the earth-rock dam are established, the seepage information is interpreted, and then the rapid identification of the abnormal seepage area of the earth-rock dam is realized, laying a foundation for the accurate positioning of the next local abnormal points.

[0049] S2: Precise positioning. First, based on the rapid identification of the seepage point outlet position, use the seepage inlet detection equipment to accurately position the seepage channel, accurately obtain the position and scale information of the inlet channel, and combine with the channel scale inversion device based on comprehensive tracer (seepage channel detection equipment) to realize the precise positioning of the seepage channel tomography. Use a three-dimensional tomography scanning detection device to detect the position and range of the seepage inlet and the seepage channel, and realize the spatial positioning of the seepage channel.

[0050] After the rapid identification of the abnormal seepage area of the earth-rock dam, for the relatively dangerous seepage hidden dangers, the spatial positioning device based on electrical resistivity tomography is a multi-functional direct current electrical resistivity tomography scanning detection device developed in combination with the detection characteristics of tomography scanning technology, integrating multi-channel potential monitoring and acquisition, visual real-time operating system, field programmable gate array logic and other electronic communication technologies. The device using the channel scale parameter inversion device based on comprehensive tracer is a device that uses artificial tracers and temperature to test the groundwater hydraulic parameters and then inversely obtains the scale parameters of the seepage channel. Use a three-dimensional tomography scanning detection device to detect the position and range of the seepage inlet and the seepage channel, and realize the spatial positioning of the seepage channel. Provide the seepage position coordinates, path size and other information for the next efficient plugging and seepage guiding treatment, and also provide basic data support for the decision-making of the treatment plan.

[0051] S3: Plugging and seepage control. After accurately positioning and obtaining the location and scale information of the inlet channel, based on the treatment principle of "plugging from above and draining from below", at the upstream inlet, an intelligent hanging tank feeding equipment for instantaneous plugging of inlet leakage is used to accurately place a multi-graded composite water-absorbing resin particle plugging material (a mixture of graded river sand and water-swellable material resin, where the particle size of the water-swellable material resin is < 5 mm, the water absorption ratio > 10 times, and the mass ratio of the mixture is sand: water-swellable material = 10:1.) at the leakage inlet channel to achieve instantaneous plugging of the inlet.

[0052] Using the grouting process for channel plugging, in the middle channel, a grouting equipment is used to inject a high-permeability polymer grouting material (the A-component slurry mainly consists of phthalic anhydride polyester polyol, chlorine-based flame retardant tris(1-chloro-2-propyl) phosphate (TCPP), surfactant AK-8810, and tertiary amine catalyst triethylenediamine, as well as metal catalyst potassium hydroxide; the B-component slurry mainly consists of isocyanate and dibutyl phthalate (BPO) plasticizer) into the seepage channel to achieve instantaneous plugging of the leakage channel. Preferably, the A-component slurry includes the following raw materials according to the mass fraction ratio: 13 - 18 parts of phthalic anhydride polyester polyol, 25 - 30 parts of chlorine-based flame retardant tris(1-chloro-2-propyl) phosphate, 4 - 8 parts of AK-8810 surfactant, 1 - 3 parts of triethylenediamine, 1 - 3 parts of potassium hydroxide; the B-component slurry includes the following raw materials according to the mass fraction ratio: 30 - 40 parts of isocyanate, 10 - 20 parts of dibutyl phthalate plasticizer.

[0053] The construction method for plugging includes the following steps: a. Detect and determine the location of the leakage channel, determine the drilling position on the earth-rock dam according to the seepage channel, and drill to complete the layout of the treatment points of the leakage channel; b. Assemble the polymer grouting device, lower the grouting pipe into the corresponding drill hole, adjust the corresponding grouting position, and start grouting; c. After the polymer reaction reaches the set requirements, repeat steps a and b to carry out the grouting operation for the next drill hole.

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

[0055] (1) Drilling grouting holes: The selection of the grouting hole position should make the bottom of the hole intersect with the leakage channel. The grouting holes should be distributed on both sides of the leakage channel, and alternate drilling should be carried out, with a plum blossom shape; the drilling technical requirements are as follows: ① Accurately determine the hole position according to the technical requirements. When opening the hole, apply light pressure, slow speed, and prevent the hole from being skewed or drilled in the wrong direction; ② Drill to a certain depth and install the grouting pipe; ③ During drilling, prevent the drill tool from being bent, causing a hole collapse or drill rod breakage accident; ④ If a fracture zone is encountered during drilling, drilling can be stopped, grouting can be carried out first, and then drilling can be continued.

[0056] (2) Lowering the grouting pipe: According to the technical requirements of polymer grouting, a PPR grouting pipe is used to lower it into the grouting hole.

[0057] (3) Grouting: Use a fixture to firmly clamp the injection gun and the injection cap to prevent the polymer material from spraying out during the grouting process. Through the feeding pipeline, the A and B two-component polymer materials (1:1) are respectively transported to the injection nozzle. The two materials are transported to the leakage point through the grouting hole at the injection nozzle and undergo a chemical reaction to achieve the purpose of filling the leakage channel and plugging the seepage water. During grouting, the pressure is divided into several stages and gradually increased to the final specified value;

[0058] (4) Grouting pressure control: During construction, first use the lowest level of pressure for injection, and the initial pressure is 0.1 - 0.3 MPa. As the slurry is continuously injected, observe the flow rate of the slurry. According to the actual situation during the grouting process, gradually increase the grouting pressure, but the grouting pressure should not always increase. It should be increased gradually in stages. Stop grouting when the slurry flows out of the grouting hole or the slurry cannot be injected;

[0059] (5) Observation: After the operation in the construction area is completed, pay attention to observing the grouting plugging situation. If new leakage points appear near the grouting area, drill holes for supplementary injection in a timely manner until there is no obvious leakage;

[0060] (6) End grouting: After grouting is completed, observe the leakage plugging situation. If there is no obvious seepage water, the grouting device can be cleaned. For the downstream of the leakage point, construct using the downstream open-ditch drainage and integration of integrated equipment. After the leakage channel is instantaneously plugged at the inlet and the channel using the drainage and seepage prevention materials (linear drainage ditch, the drainage and seepage prevention structure material is a permeable hose + sand and gravel), the downstream seepage water is drained and seepage-prevented. With the help of the comprehensive technical system based on instantaneous plugging and downstream drainage and seepage prevention, on the basis of the existing leakage location, path size, and treatment plan, the three jointly achieve the efficient treatment of the leakage danger.

[0061] The equipment parameters used in the method for detecting, inspecting, and emergency repairing the leakage of the earth-rock dam in this embodiment are shown in Table 1.

[0062] Table 1

[0063]

[0064] The above is only the specific implementation manner of the present invention. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The rest that is not described in detail belongs to the prior art.

Claims

1. A method for detecting, inspecting and rescuing earth-rock dam leakage, characterized in that: The steps include: S1: Quick identification S101: Use the long-endurance UAV-mounted dual-light inspection equipment combined with the temperature correlation model between earth-rock dam leakage and infrared images to automatically identify suspected leakage points based on the infrared images collected by the long-endurance UAV-mounted dual-light inspection equipment; S102: judging whether the suspected leakage point actually has leakage through manual online judgment, and querying the position coordinates of the infrared image of the suspected leakage point; S103: Use a long-endurance drone equipped with dual-light inspection equipment to fly to the coordinate point to conduct a close-range dual-light detailed review of the suspected leakage point; S104: Use ultra-wideband distributed optical fiber sensing equipment to detect leakage hazards in the embankment. Bury temperature measuring optical fiber at the foot of the backwater slope and use ultra-wideband distributed optical fiber sensing equipment for real-time monitoring. Based on the obtained temperature measurement curve, quickly identify abnormal seepage areas in the earth-rock embankment; S2: Precise positioning S201: Based on the rapid identification of abnormal seepage areas of earth-rock dams, the leakage inlet detection equipment is used to accurately locate the leakage channel and obtain the location and scale information of the inlet channel; S202: Combined with the channel-scale inversion device based on comprehensive tracing, accurate positioning of leakage channel tomography; S203: Using a three-dimensional tomography scanning detection device to detect the position and range of the leakage entrance and the leakage channel, so as to achieve spatial positioning of the leakage channel; S3: Blocking and diversion S301: Use intelligent hanging tank material feeding and plugging equipment upstream of the leakage inlet to accurately put the composite water-absorbing resin particle plugging material into the leakage inlet channel to instantly plug the leakage inlet; S302: using a high permeability polymer material to be injected into the leakage channel in the middle of the leakage channel to instantly block the leakage channel; S303: Use the downstream trenching and drainage integrated equipment to carry out construction on the downstream of the leakage, use the drainage material to treat the leakage channel after the leakage inlet and channel are instantly blocked, and then drain the downstream seepage.

2. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1 is characterized by: In step 101, the dual-light inspection equipment carried by the unmanned aerial vehicle includes a dual-light gimbal, which 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 in the same field of view, perform infrared-visible dual-light image fusion analysis on the collected infrared images and visible light images, obtain infrared abnormal area information and position information of the earth-rock dam, and automatically identify suspected leakage points.

3. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 2 is characterized by: In step 104, the temperature measuring optical fiber is buried at a depth of 10 to 15 cm, and 24-hour all-weather monitoring is performed every day to output a temperature measurement curve, and the leakage outlet range is obtained from the abnormal area reflected in the temperature measurement curve.

4. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1 is characterized by: In step 301, the composite water-absorbing resin particle plugging material is a mixture of graded river sand and water-absorbing and swelling material resin in a mass ratio of (10-15):1, wherein the particle size of the water-absorbing and swelling material resin is less than 5 mm and the water absorption ratio is greater than 10 times.

5. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1 is characterized by: In the step 302, the high permeability polymer material includes a component A slurry and a component B slurry; The component A slurry comprises the following raw materials in terms of mass ratio: 13 to 18 parts of phthalic anhydride polyester polyol, 25 to 30 parts of chlorine flame retardant tris (1-chloro-2-propyl) phosphate, 4 to 8 parts of AK-8810 surfactant, 1 to 3 parts of triethylenediamine, and 1 to 3 parts of potassium hydroxide; The B component slurry comprises the following raw materials in terms of mass ratio: 30 to 40 parts of isocyanate and 10 to 20 parts of dibutyl phthalate plasticizer.

6. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1 is characterized by: In step 302, a high permeability polymer material is injected into the leakage channel to instantly block the leakage channel, and the construction method includes the following steps: a. Detect and determine the location of the leakage channel, determine the drilling location on the earth-rock dam according to the infiltration channel, and drill to complete the arrangement of the treatment points of the leakage channel; b. Assemble the polymer grouting device, lower the grouting pipe into the corresponding drill hole, adjust the corresponding grouting position, and start grouting; c. After the reaction of the high-permeability polymer material reaches the set requirements, repeat steps a and b to carry out the grouting operation of the next borehole.

7. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 6 is characterized by: In step 302, grouting includes the following steps: (1) Drilling grouting holes: The grouting holes are located at the intersection of the bottom of the hole and the leakage channel. The grouting holes are distributed on both sides of the leakage channel and drilled alternately in a plum blossom shape. (2) Lower the grouting pipe: Use the PPR grouting pipe to lower into the grouting hole; (3) Grouting: Use a clamp to clamp the injection gun and the injection cap, and deliver the A and B component slurries of the high permeability polymer material to the injection gun mouth in a ratio of 1:1 through the material delivery pipeline. The two component materials are delivered to the leakage point through the grouting hole at the injection gun mouth to fill the leakage channel and block 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 grouting, with an initial pressure of 0.1-0.3 MPa. Then, grouting is carried out in a graded and gradually increasing manner. Grouting is stopped when the slurry flows out of the grouting hole or the slurry cannot be injected. (5) Observation: After the construction work is completed, pay attention to the grouting and plugging situation. If new leakage points appear near the grouting point, drill holes and fill them in time until there is no obvious leakage; (6) End of grouting: After the grouting is completed, observe the leakage blocking situation. If there is no obvious leakage, it is finished.

8. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1 is characterized by: In step 303, a linear drainage ditch is constructed downstream of the leakage using a downstream trenching and drainage integrated equipment set.

9. The earth-rock dam leakage detection, inspection and emergency rescue method according to claim 1, characterized in that: In step 303, the drainage materials are water-permeable hoses and sand and gravel.

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