A water seepage monitoring device for reservoir dam

Abstract

The invention provides a water seepage monitoring device for a reservoir dam, which relates to the technical field of permeability detection, and comprises a cannula assembly, wherein the cannula assembly comprises a permeation tube, a mounting plate is fixed at one end of the permeation tube, and a mounting ring is fixed at the other end of the permeation tube, two groups of the permeation tubes are locked and connected with the mounting plate through the mounting ring, through holes arranged in rows are evenly spaced on the surface of the permeation tube, and an isolation net is sleeved on the outer surface of the permeation tube. Compared with the prior art, the overall length of the permeation tube is installed in a splicing manner to meet the use requirements of different lengths, and cooperates with the detection assembly to move along the inside of the permeation tube to detect the position of the leakage, and an isolation net is arranged on the periphery of the permeation tube to isolate sand and gravel, and with the rotation of the isolation net, the accumulated and covered sand and gravel are sent into the inner cavity of the mounting plate of the permeation tube and are sucked out by a suction pump to avoid affecting the permeability of the permeation tube and maintain high-sensitivity permeation detection.

Description

Technical Field

[0001] The invention relates to the technical field of permeability detection, in particular to a water seepage monitoring device for a reservoir dam. Background Art

[0002] China attaches great importance to the leakage detection technology of reservoir dams. Dam leakage has always been the focus of attention in water conservancy projects. When conducting leakage surveys, a lot of manpower, financial resources and technology are often required. Due to the long use time and disrepair of the reservoir, many cracks will appear, and the erosion problem will also cause leakage in the reservoir, which not only affects the structural safety and anti-seepage safety of the reservoir, but also threatens the safety of life and property of surrounding residents once the dam breaks and the embankment collapses, and also pollutes the surrounding environment. Therefore, the severity of the reservoir leakage problem has affected the safety of the reservoir dam. As an important water conservancy project, the reservoir plays a huge role in my country's national economic construction. Therefore, it is necessary to analyze the causes of reservoir dam leakage and adopt appropriate leakage detection technology for the reservoir to ensure the normal operation of the reservoir.

[0003] The existing technology usually installs sensors inside the dam to detect whether there is a leak inside the dam body. This method is relatively limited and the detectable area is small. There is also a method of inserting a detection tube into the dam. Relying on the principle of penetration, when there is a leak, the liquid can enter the detection tube and the leakage is monitored by the sensor in the detection tube. However, in this method, the penetration pipe needs to have a hole on the surface for the liquid to enter. After long-term use, sand and gravel will block the penetration hole of the pipe, thereby affecting the accuracy of leakage detection and making it inconvenient to clean. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water seepage monitoring device for reservoir dams to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The overall length of the permeation tube is installed in a splicing manner to meet the use requirements of different lengths. It cooperates with the detection component and moves along the inside of the permeation tube to detect the location of the leakage. An isolation net is set on the periphery of the permeation tube to isolate sand and gravel. At the same time, with the rotation of the isolation net, the accumulated and covered sand and gravel are sent into the inner cavity of the installation plate of the permeation tube and are pumped out by a suction pump to avoid affecting the permeability of the permeation tube and maintain high-sensitivity permeation detection.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a water seepage monitoring device for a reservoir dam, comprising a cannula assembly, the cannula assembly comprising a permeation tube, a mounting plate is fixed at one end of the permeation tube, and a mounting ring is fixed at the other end of the permeation tube, two groups of the permeation tubes are locked and connected with the mounting plate through the mounting ring, through holes arranged in rows are evenly spaced on the surface of the permeation tube, an isolation net is sleeved on the outer surface of the permeation tube, second swivels are rotatably mounted at the positions of the isolation net on both sides of the mounting plate through the shaft ring, a first swivel is rotatably mounted at the position of the isolation net on the surface of the mounting ring through the shaft ring, and the isolation net is The two ends of the net are fixedly connected to the first swivel and the second swivel at the two ends of the infiltration tube, an installation box is installed on the top of the infiltration tube at the uppermost end of the infiltration tube assembly, a plug is sealably installed on the bottom of the infiltration tube at the lowermost end of the infiltration tube assembly, a detection assembly is provided at the inner axis of the infiltration tube, the detection assembly includes a traction rope, the two ends of the traction rope are connected to the plug and the installation box, a disc is slidably installed on the surface of the traction rope, and a swivel arm is rotatably installed on the bottom surface of the disc through a bearing, and a humidity sensor is installed on the outer end of the swivel arm, four connecting plates are equidistantly fixed between the mounting disc and the mounting ring of the infiltration tube, and the connecting plates cover the outer surface of the isolation net.

[0006] Furthermore, the installation box is sleeved and installed on the top of the permeation tube at the uppermost end of the insertion tube assembly, and a gear ring is installed on the outer surface of the first rotating ring at the upper end of the permeation tube. A first motor is fixed inside the installation box, and a gear is fixed at the output end of the first motor, and the gear is meshed and connected with the gear ring.

[0007] Furthermore, the detection component also includes a winding seat, and the winding seat is installed on the inside of the installation box and the inner surface of the plug, and a second motor with a waterproof package is fixed to the outer end of the winding seat, and the output end of the second motor is fixedly connected to the winding shaft of the winding seat, and the two ends of the traction rope are wound on the two winding shafts.

[0008] Furthermore, a sliding sleeve is fixedly sleeved on the surface of the traction rope, and the sliding sleeve is fixedly connected to the disc, a third motor with a waterproof package is fixed at the center position of the disc, and an output end of the third motor is fixedly connected to the rotating arm.

[0009] Furthermore, a cylindrical sponge layer is fixed on the inner wall of the permeation tube, and the humidity sensor is in sliding contact with the surface of the sponge layer.

[0010] Furthermore, a first threaded ring is fixed on the side of the first rotating ring facing the mounting disk of another group of permeation tubes, and a second threaded ring is installed on the side of the plug facing the mounting disk. A threaded groove is provided on the inner ring surface of the mounting disk, and both the first threaded ring and the second threaded ring can be threadedly inserted into the threaded groove.

[0011] Furthermore, a side of the first rotating ring facing the second rotating ring is equidistantly fixed with plug posts, and the second rotating ring is provided with slots at positions corresponding to the plug posts, and the plug posts can be slidably inserted into the slots.

[0012] Furthermore, an inner cavity is provided inside the mounting plate, and four entrance ports are opened on the side of the inner cavity facing the permeation tube, and a stopper is fixed on the surface of the second rotating ring at the position corresponding to the entrance port, and four push plates are equidistantly slidably connected inside the inner cavity, and the push plates are fixedly connected to the second rotating rings on both sides.

[0013] Furthermore, a connecting pipe is inserted into the inside of the permeation tube, and the two ends of the connecting pipe respectively penetrate into the mounting plate and the inner cavity and pass through the mounting ring. The mounting plate is located on the surface of the other side of the connecting pipe and is also provided with a connector like the mounting ring.

[0014] Furthermore, an opening is provided on the inner side of the connecting plate, and an inclined groove is provided inside the opening of the connecting plate, and the position of the inclined groove corresponds to the entrance of the inner cavity.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention can intermittently open the inlet through the rotation of the second rotating ring, so as to avoid the inlet being open for a long time and causing all the surrounding sand to enter the inner cavity. The inner cavity can be fine sand. Under the action of the connecting pipe connection after each infiltration tube is spliced, the connecting pipe at the top is connected to the suction pump to extract the sand in the inner cavity of each mounting plate to avoid accumulation. When installing the infiltration tube, the mounting plates of the two groups of infiltration tubes are installed corresponding to the mounting rings, and the connectors on the first rotating ring and the second rotating ring are connected by bolts or threads to achieve the connection of the entire suction pipeline.

[0017] 2. The unwinding length of the traction rope in the present invention is determined according to the total length of the spliced ​​permeation tubes, so that the detection range of the detection component covers the entire inner wall of the pipeline, and the penetration outside the permeation tube is absorbed by the sponge layer. The second motor of the reel-up seat in the installation box drives the reel-up shaft to reel up, and the second motor of the reel-up seat on the plug drives the reel-up shaft to unwind, thereby moving the traction rope, pulling the disc and the humidity sensor to move along the inside of the pipeline.

[0018] 3. The present invention drives the rotating arm and the humidity sensor to rotate through the third motor, so that the humidity sensor contacts the surface of the sponge layer, and determines whether leakage occurs by detecting the humidity in the sponge layer. The humidity sensor moves in the vertical direction and rotates in a circle at the same time, thereby increasing the detection range.

[0019] 4. When installing multiple groups of permeation tubes, the present invention first docks the mounting plate with the mounting ring, and inserts the first threaded ring on the mounting ring into the threaded groove inside the mounting plate to achieve a fixed connection between the two and the two permeation tubes. This method can be adjusted and installed according to the required length of the monitoring area, and has wider applicability. When the first swivel and the second swivel are docked, the plug post is inserted into the slot, and then the isolation nets of the multiple groups of permeation tubes can rotate together. The first motor inside the mounting box drives the gear to rotate and mesh with the gear ring, and drives all the isolation nets including the first swivel and the second swivel to rotate from the top, and cleans the surface of the isolation net to avoid blockage that affects the permeation detection.

[0020] 5. Compared with the prior art, the overall length of the permeation tube of the present invention is installed in a splicing manner to meet the use requirements of different lengths. In cooperation with the detection component, the permeation tube is moved inside the permeation tube to detect the location of the leakage. An isolation net is set on the periphery of the permeation tube to isolate the sand and gravel. At the same time, with the rotation of the isolation net, the accumulated and covered sand and gravel are sent into the inner cavity of the installation plate of the permeation tube and are pumped out by a suction pump to avoid affecting the permeability of the permeation tube and maintain high-sensitivity permeation detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a device for monitoring water seepage in a reservoir dam according to the present invention;

[0022] Figure 2 This is a schematic diagram of a driving structure in an installation box of a reservoir dam seepage monitoring device according to the present invention;

[0023] Figure 3 It is a schematic diagram of the separation of a permeation pipe and an isolation net used in a reservoir dam seepage monitoring device of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection between the tail end of a permeation tube and a plug used in a reservoir dam seepage monitoring device of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a detection component for a reservoir dam seepage monitoring device of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection between a mounting plate and a mounting ring of a reservoir dam seepage monitoring device of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection between a first swivel and a second swivel of a reservoir dam seepage monitoring device of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of a mounting plate for a reservoir dam seepage monitoring device of the present invention;

[0029] Fig. 9 It is a schematic diagram of the separation of the second rotating ring and the mounting plate of a water seepage monitoring device for a reservoir dam according to the present invention;

[0030] Fig.10 The present invention is a schematic diagram of a connecting plate structure used in a reservoir dam seepage monitoring device.

[0031] In the figure: 1. cannula assembly; 11. mounting plate; 111. inner cavity; 112. push plate; 113. entrance; 114. threaded groove; 12. isolation net; 13. connecting plate; 131. inclined groove; 14. mounting ring; 141. first threaded ring; 15. permeation tube; 16. sponge layer; 2. mounting box; 21. first motor; 22. gear; 23. gear ring; 24. first swivel; 25. second swivel; 251. stopper; 26. plug; 27. slot; 3. plug; 31. second threaded ring; 4. detection assembly; 41. winding seat; 42. second motor; 43. traction rope; 44. disc; 45. third motor; 46. rotating arm; 47. humidity sensor; 48. sleeve; 5. connecting pipe; 51. connector. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] See also Figures 1 to 10The present invention provides a technical solution: a water seepage monitoring device for a reservoir dam, comprising a cannula assembly 1, the cannula assembly 1 comprising a permeation tube 15, one end of the permeation tube 15 is fixed with a mounting plate 11, and the other end of the permeation tube 15 is fixed with a mounting ring 14, two groups of the permeation tubes 15 are locked and connected with the mounting plate 11 through the mounting ring 14, through holes arranged in rows are equidistantly provided on the surface of the permeation tube 15, an isolation net 12 is sleeved on the outer surface of the permeation tube 15, second swivels 25 are rotatably installed at the positions of the isolation net 12 on both sides of the mounting plate 11 through shaft rings, a first swivel 24 is rotatably installed at the positions of the isolation net 12 on the surface of the mounting ring 14 through shaft rings, and both ends of the isolation net 12 are fixedly connected with the first swivel 24 and the second swivel 25 at both ends of the permeation tube 15, a mounting box 2 is installed on the top of the permeation tube 15 at the uppermost end of the cannula assembly 1, a plug 3 is sealed and installed at the bottom of the permeation tube 15 at the bottom of the cannula assembly 1, and a plug 3 is provided at the inner axis of the permeation tube 15 A detection component 4, wherein the detection component 4 includes a traction rope 43, both ends of which are connected to a plug 3 and an installation box 2, a disc 44 is slidably mounted on the surface of the traction rope 43, and a swivel arm 46 is rotatably mounted on the bottom surface of the disc 44 through a bearing, and a humidity sensor 47 is mounted on the outer end of the swivel arm 46, four connecting plates 13 are equidistantly fixed between the mounting plate 11 and the mounting ring 14 of the infiltration tube 15, and the connecting plates 13 cover the outer surface of the isolation net 12, when the device is used, a hole is drilled on the monitoring dam, and then different numbers of infiltration tubes 15 are assembled through the mounting plate 11 and the mounting ring 14 according to the depth required for detection, and then the plug 3 seals the bottom of the pipeline, and the top of the pipeline is connected to the installation box 2, and the installation box 2 is placed in the outside, and the isolation net 12 protects the infiltration hole from blocking, and the isolation net 12 is cleaned by the driving structure in the installation box 2, and the cleaned sand is sucked out, and the detection component 4 moves along the inner wall of the pipeline to detect the permeability of the inside of the infiltration tube 15.

[0034] In this embodiment, a first threaded ring 141 is fixed to the side of the first rotating ring 24 facing the mounting disk 11 of another group of permeation tubes 15, a second threaded ring 31 is installed to the side of the plug 3 facing the mounting disk 11, a threaded groove 114 is provided on the inner ring surface of the mounting disk 11, and both the first threaded ring 141 and the second threaded ring 31 can be threadedly inserted into the threaded groove 114, the mounting box 2 is sleeved and installed on the top of the permeation tube 15 at the uppermost end of the cannula assembly 1, and a gear ring 23 is installed on the outer surface of the first rotating ring 24 at the upper end of the permeation tube 15, a first motor 21 is fixed inside the mounting box 2, and a gear 22 is fixed to the output end of the first motor 21, the gear 22 is meshedly connected with the gear ring 23, plug posts 26 are equidistantly fixed to the side of the first rotating ring 24 facing the second rotating ring 25, and the second rotating ring 25 corresponds to the plug posts 26 A slot 27 is provided at the position, and the column 26 can be slidably inserted into the slot 27. When multiple groups of infiltration tubes 15 are installed, the mounting plate 11 is first docked with the mounting ring 14, and the first threaded ring 141 on the mounting ring 14 is inserted into the threaded groove 114 inside the mounting plate 11 to achieve a fixed connection between the two and the two infiltration tubes 15. This method can be adjusted and installed according to the required length of the monitoring area, and has a wider applicability. When the first swivel ring 24 and the second swivel ring 25 are docked, the column 26 is inserted into the slot 27, and then the isolation nets 12 of the multiple groups of infiltration tubes 15 can rotate together, and the first motor 21 inside the mounting box 2 drives the gear 22 to rotate and engage with the gear ring 23, and drives all the isolation nets 12 including the first swivel ring 24 and the second swivel ring 25 to rotate from the top, and clean the surface of the isolation net 12 to avoid blockage that affects the infiltration detection.

[0035] In this embodiment, the detection component 4 also includes a winding seat 41, the winding seat 41 is installed inside the installation box 2 and on the inner surface of the plug 3, and a second motor 42 with a waterproof package is fixed to the outer end of the winding seat 41, and the output end of the second motor 42 is fixedly connected to the winding shaft of the winding seat 41, and the two ends of the traction rope 43 are wound on the two winding shafts, and a sliding sleeve 48 is fixedly sleeved on the surface of the traction rope 43, and the sliding sleeve 48 is fixedly connected to the disc 44, and a third motor 45 with a waterproof package is fixed at the center position of the disc 44, and the output end of the third motor 45 is fixedly connected to the rotating arm 46, a cylindrical sponge layer 16 is fixed on the inner wall of the permeation tube 15, and the humidity sensor 47 is in sliding contact with the surface of the sponge layer 16, and the traction rope 43 is unwound. The length is determined according to the total length of the spliced ​​infiltration tube 15, so that the detection range of the detection component 4 covers the entire inner wall of the pipeline, and the penetration of the outside of the infiltration tube 15 is absorbed by the sponge layer 16. The second motor 42 of the winding seat 41 in the installation box 2 drives the winding shaft to reel in, and the second motor 42 of the winding seat 41 on the plug 3 drives the winding shaft to unwind, so that the traction rope 43 moves, pulling the disc 44 and the humidity sensor 47 to move along the inside of the pipeline. In this process, the third motor 45 drives the rotating arm 46 and the humidity sensor 47 to rotate, so that the humidity sensor 47 contacts with the surface of the sponge layer 16, and determines whether leakage occurs by detecting the humidity in the sponge layer 16. The humidity sensor 47 moves in the vertical direction and rotates in a circle at the same time, thereby increasing the detection range.

[0036] In this embodiment, an inner cavity 111 is provided inside the mounting plate 11, and four inlet ports 113 are provided on the side of the inner cavity 111 facing the permeation tube 15, a stopper 251 is fixed on the surface of the second rotating ring 25 at a position corresponding to the inlet port 113, four push plates 112 are equidistantly slidably connected inside the inner cavity 111, and the push plates 112 are fixedly connected to the second rotating rings 25 on both sides, a connecting pipe 5 is inserted into the inside of the permeation tube 15, and the two ends of the connecting pipe 5 respectively penetrate into the mounting plate 11 and the inner cavity 111 and pass through the mounting ring 14, a connector 51 is provided on the surface of the mounting plate 11 located on the other side of the connecting pipe 5, and the mounting ring 14 is also provided with the connector 51, an opening is provided on the inner side of the connecting plate 13, and a bevel groove 131 is provided inside the opening of the connecting plate 13, and the position of the bevel groove 131 corresponds to the inlet port 113 of the inner cavity 111, and the positions of the opening of the connecting plate 13 and the bevel groove 131 are as shown in FIG. Fig.10As shown, the bottom of the inclined groove 131 is in contact with the isolation net 12. When the isolation net 12 rotates, it will contact the bottom of the inclined groove 131, and then the impurities and sand accumulated or adsorbed on the outer surface of the isolation net 12 are sent into the inclined groove 131. Because the pipeline of the present device is installed vertically, and because the inclined groove 131 of the connecting plate 13 corresponds to the position of the entrance 113 of the inner cavity 111, it can be gradually sent into the inner cavity 111 by the action of gravity. In this process, it is not required that all the scraped sand and soil are quickly sent into the inner cavity 111. It is only necessary to keep the isolation net 12 free of sand and soil accumulation to affect its permeability. The sand and soil scraped from the connecting plate 13 can slowly enter Air, during this process, the rotation of the second swivel 25 will intermittently open the inlet 113 to prevent the inlet 113 from being open for a long time and causing all the surrounding sand to enter the inner cavity 111. The inner cavity 111 can be fine sand. Under the action of the connecting pipe 5 connected after each infiltration tube 15 is spliced, a suction pump is connected from the top connecting pipe 5 to extract the sand in the inner cavity 111 of each mounting plate 11 to avoid accumulation. When installing the infiltration tube 15, the mounting plates 11 of the two groups of infiltration tubes 15 are installed corresponding to the mounting rings 14, and the connectors 51 on the first swivel 24 and the second swivel 25 are connected by bolts or threads to achieve the connection of the entire suction pipeline.

[0037] When using the device, a hole is drilled on the monitoring dam, and then different numbers of infiltration tubes 15 are assembled through the mounting plate 11 and the mounting ring 14 according to the depth to be detected, and the mounting plate 11 is docked with the mounting ring 14, and the first threaded ring 141 on the mounting ring 14 is inserted into the threaded groove 114 inside the mounting plate 11 to achieve a fixed connection between the two and the two infiltration tubes 15. This method can be adjusted and installed according to the required length of the monitoring area, and has a wider applicability. When the first swivel 24 and the second swivel 25 are docked, the plug 26 is inserted into the slot 27, and then the isolation net 12 of multiple groups of infiltration tubes 15 can be connected together. The plug 3 then seals the bottom of the pipeline, and the top of the pipeline is connected to the installation box 2, which is placed outside. The isolation net 12 protects the penetration hole from blocking. The first motor 21 inside the installation box 2 drives the gear 22 to rotate and mesh with the gear ring 23, driving all the isolation nets 12 including the first rotating ring 24 and the second rotating ring 25 to rotate from the top, cleaning the surface of the isolation net 12 to avoid blockage that affects the penetration detection. When the isolation net 12 rotates, it contacts the bottom of the inclined groove 131, and then sends the impurities and sand accumulated or adsorbed on the outer surface of the isolation net 12 into the inclined groove 1 31, because the pipeline of the device is installed vertically, and because the inclined groove 131 of the connecting plate 13 corresponds to the position of the entrance port 113 of the inner cavity 111, it can be gradually sent into the inner cavity 111 by the action of gravity. In this process, it is not required that all the scraped sand and soil are quickly sent into the inner cavity 111. It is only necessary to keep no sand and soil accumulation on the isolation net 12 to affect its permeability. The sand and soil scraped from the connecting plate 13 can slowly enter the air. In this process, the rotation of the second rotating ring 25 will intermittently open the entrance port 113 to prevent the entrance port 113 from being opened for a long time, causing all the surrounding sand and soil to enter the inner cavity. Inside the cavity 111, fine sand may enter the inner cavity 111. After each infiltration tube 15 is spliced, the connecting tube 5 is connected to a suction pump, and the sand in the inner cavity 111 of each mounting plate 11 is extracted to avoid accumulation. When installing the infiltration tube 15, the mounting plates 11 of the two groups of infiltration tubes 15 are installed corresponding to the mounting rings 14, and the connectors 51 on the first swivel 24 and the second swivel 25 are connected by bolts or threads to achieve connectivity of the entire suction pipeline. The detection component 4 is moved along the inner wall of the pipeline to detect the permeability of the inside of the infiltration tube 15.

[0038] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water seepage monitoring device for a reservoir dam, comprising a cannula assembly (1), characterized in that: The cannula assembly (1) comprises a permeation tube (15), one end of which is fixed with a mounting plate (11), and the other end of which is fixed with a mounting ring (14), two groups of the permeation tubes (15) are locked and connected to the mounting plate (11) via the mounting ring (14), the surface of the permeation tube (15) is provided with through holes arranged in rows at equal intervals, the outer surface of the permeation tube (15) is sleeved with an isolation net (12), second swivels (25) are rotatably mounted on both sides of the mounting plate (11) at positions corresponding to the isolation net (12) via shaft rings, a first swivel (24) is rotatably mounted on the surface of the mounting ring (14) at positions corresponding to the isolation net (12), and both ends of the isolation net (12) are connected to the permeation tube ( The first rotating ring (24) and the second rotating ring (25) at both ends of the cannula assembly (15) are fixedly connected, the top of the permeation tube (15) at the uppermost end of the cannula assembly (1) is installed with a mounting box (2), the bottom of the permeation tube (15) at the lowermost end of the cannula assembly (1) is sealed with a plug (3), a detection assembly (4) is provided at the inner axis of the permeation tube (15), the detection assembly (4) comprises a traction rope (43), the two ends of the traction rope (43) are connected to the plug (3) and the mounting box (2), a disc (44) is slidably installed on the surface of the traction rope (43), and a rotating arm (46) is rotatably installed on the bottom surface of the disc (44) through a bearing, and a humidity sensor (47) is installed at the outer end of the rotating arm (46), the permeation tube (15) Four connecting plates (13) are fixed at equal intervals between the mounting plate (11) and the mounting ring (14) of the isolation net (12), and the connecting plates (13) cover the outer surface of the isolation net (12); an inner cavity (111) is provided inside the mounting plate (11), and four inlet ports (113) are opened on the side of the inner cavity (111) facing the permeation tube (15); a stopper (251) is fixed on the surface of the second rotating ring (25) at positions corresponding to the inlet ports (113); four push plates (112) are equidistantly slidably connected inside the inner cavity (111), and the push plates (112) are fixedly connected to the second rotating rings (25) on both sides; a connecting pipe (5) is inserted into the inside of the permeation tube (15), and the two ends of the connecting pipe (5) are respectively inserted into the mounting plate (11) and the inner cavity (14). The connecting plate (13) is provided with an opening on the inner side of the connecting plate (13), and a bevel groove (131) is provided inside the opening of the connecting plate (13). The position of the bevel groove (131) corresponds to the entrance (113) of the inner cavity (111). The bottom of the bevel groove (131) contacts the isolation net (12). When the isolation net (12) rotates, it contacts the bottom of the bevel groove (131), thereby sending impurities and sand accumulated or adsorbed on the outer surface of the isolation net (12) into the bevel groove (131). The isolation net (12) is cleaned by the driving structure in the installation box (2).The cleaned sand and soil are sucked out.

2. The device for monitoring water seepage in a reservoir dam according to claim 1, characterized in that: The installation box (2) is sleeved and installed on the top of the permeation tube (15) at the uppermost end of the cannula assembly (1), and a gear ring (23) is installed on the outer surface of the first rotating ring (24) at the upper end of the permeation tube (15). A first motor (21) is fixed inside the installation box (2), and a gear (22) is fixed at the output end of the first motor (21), and the gear (22) is meshedly connected with the gear ring (23).

3. The device for monitoring water seepage in a reservoir dam according to claim 1, characterized in that: The detection component (4) also includes a winding seat (41), and the winding seat (41) is installed inside the installation box (2) and on the inner surface of the plug (3), and a second motor (42) with a waterproof package is fixed to the outer end of the winding seat (41), and the output end of the second motor (42) is fixedly connected to the winding shaft of the winding seat (41), and the two ends of the traction rope (43) are wound on the two winding shafts.

4. The device for monitoring water seepage in a reservoir dam according to claim 3, characterized in that: A sliding sleeve (48) is fixedly sleeved on the surface of the traction rope (43), and the sliding sleeve (48) is fixedly connected to the disc (44). A third motor (45) with a waterproof package is fixed at the center of the disc (44), and the output end of the third motor (45) is fixedly connected to the rotating arm (46).

5. The device for monitoring water seepage in a reservoir dam according to claim 4, characterized in that: A cylindrical sponge layer (16) is fixed on the inner wall of the permeation tube (15), and the humidity sensor (47) is in sliding contact with the surface of the sponge layer (16).

6. The device for monitoring water seepage in a reservoir dam according to claim 1, characterized in that: A first threaded ring (141) is fixed to the side of the first rotating ring (24) facing the mounting plate (11) of another group of permeation tubes (15), and a second threaded ring (31) is installed to the side of the plug (3) facing the mounting plate (11). A threaded groove (114) is provided on the inner ring surface of the mounting plate (11), and the first threaded ring (141) and the second threaded ring (31) are both threadedly inserted into the threaded groove (114).

7. The device for monitoring water seepage in a reservoir dam according to claim 6, characterized in that: Insertion posts (26) are fixed equidistantly on one side of the first rotating ring (24) facing the second rotating ring (25); a slot (27) is provided on the second rotating ring (25) at a position corresponding to the insertion post (26), and the insertion post (26) is slidably inserted into the slot (27).

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