Multi-sealing water stop structure for underground diaphragm wall joint and water stop method of multi-sealing water stop structure

Abstract

The invention discloses a multi-sealing water stop structure for an underground diaphragm wall joint and a water stop method thereof, and relates to the field of diaphragm wall joint sealing, the multi-sealing water stop structure comprises a first joint pipeline and a second joint pipeline, and further comprises an agent outlet sealing mechanism used for performing agent spraying sealing on the joint of the first joint pipeline and the second joint pipeline; according to the multi-sealing water stop structure for the underground diaphragm wall joint and the water stop method of the multi-sealing water stop structure, the water seepage condition is detected through the automatic switching mechanism, the rotary driving part is triggered to work, the joint of the underground diaphragm wall joint can be sealed timely and automatically during water seepage, leaked water is effectively prevented from entering a pipeline, and the service life of the underground diaphragm wall joint is prolonged. Compared with a mode of sealing and water stopping through sealing materials such as a rubber water stop belt and a water swelling strip, the phenomenon that the sealing performance is reduced and leakage occurs due to aging and damage of the sealing materials as time goes on is avoided, and therefore underground water can be effectively prevented from permeating.

Description

TECHNICAL FIELD

[0001] The present application relates to continuous wall joint sealing technology, in particular to a multiple sealing water stop structure for underground continuous wall joints and a water stopping method thereof. BACKGROUND

[0002] In the construction and use of underground continuous walls, the sealing and water stopping effect of the joint part is crucial, which is directly related to the overall stability, waterproof performance of the underground continuous wall and the safety of the surrounding environment. However, the existing underground continuous wall joint sealing and water stopping technology has many deficiencies, which is difficult to meet the actual engineering needs.

[0003] At present, the underground continuous wall joint mainly adopts traditional sealing methods such as rubber water stop belt and water-swelling water stop strip. These sealing materials can play a certain sealing role when initially installed, but over time, due to the complexity of the underground environment, such as long-term immersion of groundwater, changes in soil pressure, erosion of chemical substances and other factors, the sealing materials are prone to aging and damage, leading to a decline in sealing performance and leakage. Moreover, a single sealing method cannot cope with various complex working conditions, and once a problem occurs in a certain link, the entire sealing system may fail, which cannot effectively prevent the penetration of groundwater. Therefore, a multiple sealing water stop structure for underground continuous wall joints and a water stopping method thereof are proposed. SUMMARY

[0004] The purpose of the present application is to provide a multiple sealing water stop structure for underground continuous wall joints and a water stopping method thereof, to solve the problem that the underground continuous wall joint in the prior art mainly adopts traditional sealing methods such as rubber water stop belt and water-swelling water stop strip. These sealing materials can play a certain sealing role when initially installed, but over time, due to the complexity of the underground environment, such as long-term immersion of groundwater, changes in soil pressure, erosion of chemical substances and other factors, the sealing materials are prone to aging and damage, leading to a decline in sealing performance and leakage.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a multiple sealing water stop structure for underground continuous wall joints and a water stopping method thereof, comprising a first joint pipe and a second joint pipe, further comprising:

[0006] An agent outlet sealing mechanism is arranged inside the first joint pipe and the second joint pipe to spray agent sealing on the joint of the first joint pipe and the second joint pipe, which comprises a fixed vertical plate arranged inside the first joint pipe, a protection box fixedly connected to one side of the fixed vertical plate, a rotating driving element fixedly connected inside the protection box, a rotating shaft fixedly connected to the output end of the rotating driving element, and the rotating shaft extends into the inside of the second joint pipe, a plurality of rotating plates fixedly connected to the outer side wall of the rotating shaft inside the first joint pipe and the second joint pipe, rotating magnetic plates fixedly connected to the two sides of the rotating plates, a connecting plate fixedly connected to the end of the rotating plate, and a wiping plate connected to the end of the connecting plate.

[0007] An automatic opening and closing mechanism is arranged on the first joint pipe to automatically open and close the agent outlet sealing mechanism.

[0008] Further, the agent outlet sealing mechanism further comprises a mounting ring arranged inside the first joint pipe and the second joint pipe, a plurality of agent storage cavities are arranged inside the mounting ring, a second telescopic element is fixedly connected inside the agent storage cavity, a pressing sliding plate is connected to one end of the second telescopic element, a connecting rod and a fixed rod are respectively connected to one side of the pressing sliding plate, the end of the connecting rod away from the pressing sliding plate slidably extends to the outside of the mounting ring, a connecting magnetic plate is connected to the end of the connecting rod outside the mounting ring, a shielding plate is connected to the end of the fixed rod, a plurality of agent outlet pipes are connected to the outer wall of the mounting ring and communicate with the inside of the agent storage cavity, and a spray head plate is connected to one end of the agent outlet pipe and communicates with the inside of the agent outlet pipe.

[0009] Further, the wiping plate is arranged in sliding fit with the joint between the first joint pipe and the second joint pipe, the first joint pipe and the second joint pipe are fixedly connected through flanges, the rotating magnetic plate and the connecting magnetic plate are arranged in corresponding opposite poles attraction, and the outer side wall of the pressing sliding plate and the inner side wall of the agent storage cavity are arranged in sliding fit.

[0010] Further, the bottom of the storage cavity is provided with a sliding groove, the sliding groove is correspondingly arranged with the shielding plate, one side of the storage cavity is provided with an agent outlet, the agent outlet is correspondingly arranged with the shielding plate, a plurality of agent nozzles are arranged on the nozzle plate, the sliding groove provides enough sliding space for the shielding plate, when the shielding plate slides downward, the shielding plate is separated from the agent outlet, the sealant in the storage cavity is extruded by the extrusion of the extrusion slide plate, and the sealant is sprayed out through the agent outlet, the agent outlet pipe and the agent nozzles on the nozzle plate, so that the sealant contacts and seals the connection between the first connector pipe and the second connector pipe.

[0011] Further, the automatic switch mechanism comprises a mounting cavity arranged on the top of the outer wall of the first connector pipe, a first telescopic element is fixedly connected in the mounting cavity, one end of the first telescopic element is connected with a sliding plate, the bottom of the sliding plate is connected with a top rod, and the inner wall bottom of the mounting cavity is connected with a touch switch.

[0012] Further, the outer wall of the sliding plate is slidably arranged with the inner wall of the mounting cavity, and the top rod is correspondingly extruded with the touch switch.

[0013] Further, the touch switch is used to open the rotary drive, which is prior art, and the working principle will not be described in detail.

[0014] A water stopping method of a multiple sealing water stopping structure of a underground continuous wall connector, comprising the following steps:

[0015] Step one: when the outer wall of the first connector pipe and the second connector pipe appears water seepage during use, the seeped water enters the inside of the mounting cavity, and as the weight of water in the mounting cavity gradually increases, the sliding plate moves downward, and then drives the top rod to extrude the touch switch downward, correspondingly opens the rotary drive, and makes it start to work;

[0016] Step two: when the rotary drive is triggered by the automatic switch mechanism to start to work, the output end drives the rotating shaft to rotate, and the rotating shaft rotates to correspondingly drive the rotating plate to rotate, and the rotating plate rotates to drive the rotating magnetic plate, the connecting plate and the wiping plate to rotate together;

[0017] Step three: when the rotating plate drives the rotating magnetic plate to rotate to the corresponding position of the connecting magnetic plate, the connecting magnetic plate is attracted to drive the connecting rod to move to the direction close to the rotating magnetic plate, correspondingly extruding the sealant in the storage cavity, and the sealant in the storage cavity is extruded by the extrusion of the extrusion slide plate, and is sprayed out through the agent outlet, the agent outlet pipe and the agent nozzles on the nozzle plate;

[0018] Step four: in the process of rotating the rotating plate, the wiping plate will slide along the connection, evenly applying the sprayed sealant to the connection of the first joint pipe and the second joint pipe.

[0019] Compared with the prior art, the multiple sealing water stop structure for the underground continuous wall joint and the water stopping method provided by the application can timely and automatically seal the connection of the underground continuous wall joint when water seeps, effectively prevent the seepage water from entering the pipe, greatly improve the sealing effect and use effect of the pipe, and effectively prevent the penetration of underground water compared with the sealing water stopping method by using sealing materials such as rubber water stop belts and water-swelling water stop strips, avoid the aging and damage of the sealing materials over time, and thus avoid the decline of the sealing performance and the leakage phenomenon, thereby effectively preventing the penetration of underground water. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 The cross-sectional structure schematic diagram provided by the embodiment of the present application;

[0022] Figure 2 The overall structure schematic diagram provided by the embodiment of the present application;

[0023] Figure 3 The cross-sectional structure schematic diagram provided by the embodiment of the present application; Figure 1 The enlarged structure schematic diagram at position A;

[0024] Figure 4 The side surface structure schematic diagram of the mounting ring provided by the embodiment of the present application;

[0025] Figure 5 The side surface internal structure schematic diagram of the first joint pipe provided by the embodiment of the present application.

[0026] Explanation of reference signs:

[0027] 1, the first joint pipe; 2, the second joint pipe; 3, the installation cavity; 301, the first telescopic element; 302, the sliding plate; 303, the top rod; 304, the touch switch; 4, the fixed vertical plate; 401, the protection box; 402, the rotary drive; 403, the rotating shaft; 404, the rotating plate; 405, the rotating magnetic plate; 406, the connecting plate; 407, the wiping plate; 408, the mounting ring; 409, the second telescopic element; 4010, the extrusion sliding plate; 4011, the connecting rod; 4012, the connecting magnetic plate; 4013, the fixed rod; 4014, the shielding plate; 4015, the agent outlet pipe; 4016, the nozzle plate. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0029] As shown in the accompanying Figure 1 to the accompanying Figure 5 drawings:

[0030] Example one:

[0031] The present application provides a kind of for underground continuous wall joint Multiple sealing water stop structure and its water stop method, including first joint pipe 1 and second joint pipe 2, still including:

[0032] Agent sealing mechanism is used to spray agent seal to the connecting place of first joint pipe 1 and second joint pipe 2, agent sealing mechanism is located in the inside of first joint pipe 1 and second joint pipe 2, agent sealing mechanism includes fixed vertical plate 4 installed in the inside of first joint pipe 1, one side of fixed vertical plate 4 is fixedly connected with protection box 401, the inside of protection box 401 is fixedly connected with rotary drive 402, the output end of rotary drive 402 is fixedly connected with rotating shaft 403, and rotating shaft 403 rotates and extends to the inside of second joint pipe 2, the outside wall of rotating shaft 403 is fixedly connected with a plurality of rotating plates 404 in the inside of first joint pipe 1 and second joint pipe 2, the two sides of a plurality of rotating plates 404 are fixedly connected with rotating magnetic plate 405, the end of rotating plate 404 is fixedly connected with connecting plate 406, and the end of connecting plate 406 is connected with wiping plate 407;

[0033] The agent outlet sealing mechanism further comprises a mounting ring 408 mounted inside the first joint pipeline 1 and the second joint pipeline 2, a plurality of agent storage cavities are formed in the inside of the mounting ring 408, a second telescopic element 409 is fixedly connected to the inside of the agent storage cavities, one end of the second telescopic element 409 is connected to a pressing sliding plate 4010, one side of the pressing sliding plate 4010 is connected to a connecting rod 4011 and a fixing rod 4013 respectively, and the end of the connecting rod 4011 away from the pressing sliding plate 4010 is slidingly extended to the outside of the mounting ring 408, the end of the connecting rod 4011 located outside the mounting ring 408 is connected to a connecting magnetic plate 4012, one end of the fixing rod 4013 is connected to a shielding plate 4014, and the outer wall of the mounting ring 408 is connected to a plurality of agent outlet pipes 4015 in communication with the inside of the agent storage cavities, and one end of the agent outlet pipe 4015 is connected to a spray head plate 4016 in communication with the inside thereof;

[0034] Further specific details of the application, one side of the wiping plate 407 is slidingly fitted at the connection between the first joint pipeline 1 and the second joint pipeline 2, the first joint pipeline 1 and the second joint pipeline 2 are connected and fixed by flanges, the rotating magnetic plate 405 and the connecting magnetic plate 4012 are arranged in a corresponding polar attraction manner, and the outer side wall of the pressing sliding plate 4010 and the inner side wall of the agent storage cavity are slidingly fitted;

[0035] Further specific details of the application, a sliding groove is formed in the bottom of the agent storage cavity, the sliding groove and the shielding plate 4014 are correspondingly arranged in a sliding manner, an agent outlet is formed in one side of the agent storage cavity, the agent outlet pipe 4015 communicates with the inside of the agent storage cavity through the agent outlet, the agent outlet and the shielding plate 4014 are correspondingly arranged in a fitting manner, a plurality of agent spraying mesh holes are formed in the spray head plate 4016, the sliding groove provides sufficient sliding space for the shielding plate 4014, when the shielding plate 4014 slides downward, it is separated from the agent outlet, the sealing agent in the inside of the agent storage cavity is extruded by the extrusion of the pressing sliding plate 4010, and is atomized and sprayed out through the agent outlet, the agent outlet pipe 4015 and the agent spraying mesh holes in the spray head plate 4016, so that the sealing agent contacts and seals the connection between the first joint pipeline 1 and the second joint pipeline 2;

[0036] Working principle: the rotating driving element 402 is fixedly installed in the protection box 401 on one side of the fixed vertical plate 4 inside the first joint pipeline 1, when the rotating driving element 402 is triggered by the automatic switch mechanism to start working, the output end of the rotating driving element 402 drives the rotating shaft 403 to rotate, the rotating shaft 403 is extended to the inside of the second joint pipeline 2, and a plurality of rotating plates 404 are fixedly connected to the inside of the first joint pipeline 1 and the second joint pipeline 2, therefore, when the rotating shaft 403 rotates, the rotating plates 404 are correspondingly driven to rotate;

[0037] Each rotating plate 404 has a rotating magnetic plate 405 fixedly connected to both sides, and a connecting plate 406 fixedly connected to the end of the rotating plate 404. A wiping plate 407 is connected to the end of the connecting plate 406. The connection between one side of the wiping plate 407 and the first connector pipe 1 and the second connector pipe 2 is slidably fitted. Therefore, when the rotating plate 404 rotates, it will drive the rotating magnetic plate 405, the connecting plate 406 and the wiping plate 407 to rotate together.

[0038] When the rotating plate 404 drives the rotating magnetic plate 405 to rotate to the position corresponding to the connecting magnetic plate 4012, the connecting magnetic plate 4012 will be attracted by the attraction between the opposite poles of the two, which will in turn drive the connecting rod 4011 to move closer to the rotating magnetic plate 405. When the connecting rod 4011 moves, it will drive the extrusion slide plate 4010 to slide in the storage chamber, extruding the sealant inside the storage chamber. At the same time, the extrusion slide plate 4010 will drive the fixed rod 4013 and the baffle plate 4014 at its bottom to slide into the sliding groove, so that the baffle plate 4014 is separated from the outlet. At this time, the sealant inside the storage chamber will enter the outlet pipe 4015 through the outlet under the extrusion action of the extrusion slide plate 4010, and then be atomized and sprayed out through the spray mesh on the nozzle plate 4016. The sprayed sealant will come into contact with the connection between the first connector pipe 1 and the second connector pipe 2.

[0039] Since the connection between the wiping plate 407 and the first connector pipe 1 and the second connector pipe 2 is a sliding fit, the wiping plate 407 will slide along the connection during the rotation of the rotating plate 404, and the sprayed sealant will be evenly applied to the connection between the first connector pipe 1 and the second connector pipe 2, thereby achieving effective sealing of the connection.

[0040] In summary, this invention detects water seepage through an automatic switching mechanism and triggers the operation of the rotary drive 402. Then, the sealing mechanism automatically sprays and evenly applies the sealant, which can seal the joint of the underground continuous wall in a timely and automatic manner when water seepage occurs. This effectively prevents the seeping water from entering the pipe and greatly improves the sealing effect and performance of the pipe.

[0041] With the above technical solution, when the rotary drive 402 is working, it drives the rotating shaft 403 to rotate, causing the rotating plate 404, rotating magnetic plate 405 and other components to rotate accordingly. When the rotating magnetic plate 405 corresponds to the connecting magnetic plate 4012, the attraction between their opposite poles causes the connecting magnetic plate 4012 to drive the connecting rod 4011 and the extrusion slide plate 4010 to extrude into the storage chamber. The extrusion slide plate 4010 drives the fixed rod 4013 and the baffle plate 4014 to slide into the sliding groove, causing the baffle plate 4014 to separate from the outlet. Under the extrusion action, the sealant is atomized and sprayed through the outlet and the outlet pipe 4015 through the spray mesh on the nozzle plate 4016, accurately acting on the connection between the first joint pipe 1 and the second joint pipe 2, ensuring that the sealant can effectively reach the part that needs to be sealed, and improving the targeting and effectiveness of the seal.

[0042] The wiping plate 407 is slidably fitted at the connection between the first joint pipe 1 and the second joint pipe 2. During rotation, the atomized sealant can be evenly applied to the connection. This even application method can ensure that the sealant fully covers all parts of the connection, avoid the risk of water leakage caused by uneven sealing, and further improve the sealing effect.

[0043] Through the above-mentioned series of operations of automatic sensing, precise dispensing and uniform application of sealant, it is possible to effectively prevent seepage water from entering the interior of the first joint pipe 1 and the second joint pipe 2. This not only protects the internal structure of the pipe from water erosion and extends the service life of the pipe, but also ensures the normal function and safe use of the underground continuous wall joint.

[0044] Example 2:

[0045] This embodiment is basically the same as the previous embodiment, except that an automatic switching mechanism is used to automatically open and close the dispensing seal. The automatic switching mechanism is set on the first connector pipe 1. The automatic switching mechanism includes an installation cavity 3 opened at the top of the outer wall of the first connector pipe 1. A first telescopic element 301 is fixedly connected inside the installation cavity 3. A sliding plate 302 is connected to one end of the first telescopic element 301. A top rod 303 is connected to the bottom of the sliding plate 302. A tactile switch 304 is connected to the bottom of the inner wall of the installation cavity 3.

[0046] In further detail, the outer wall of the sliding plate 302 and the inner wall of the mounting cavity 3 are slidably fitted together, and the top rod 303 and the tactile switch 304 are correspondingly pressed together; the tactile switch 304 is used to open the rotary drive 402, which is prior art, and its working principle will not be described in detail.

[0047] Working principle: When installing the first joint pipe 1 and the second joint pipe 2, adjust the sliding plate 302 to be in an upward position. The purpose of this is to allow the water that seeps out to effectively press down the sliding plate 302 under gravity. When water seeps out of the outer wall of the first joint pipe 1 and the second joint pipe 2 during use, the seeping water will enter the interior of the installation cavity 3. As the weight of the water in the installation cavity 3 gradually increases, when it reaches a certain weight, the water will exert downward pressure on the sliding plate 302, causing the sliding plate 302 to overcome the elastic force of the first telescopic element 301 and move downward. As the sliding plate 302 moves downward, it will drive the top rod 303 at its bottom to move downward together. The top rod 303 presses down on the touch switch 304. After the touch switch 304 is triggered, it transmits a signal to the relevant control system, which then opens the rotary drive 402 to start working.

[0048] By setting up the above technical solution and by setting up an automatic switching mechanism, when water seeps into the outer wall of the first joint pipe 1 and the second joint pipe 2, the seeping water enters the installation cavity 3. When the water reaches a certain weight, it presses down the sliding plate 302, causing the top rod 303 to squeeze the light touch switch 304, thereby opening the rotary drive component 402. This process realizes the automatic triggering of the sealing operation when water seeps in, without the need for manual intervention, which improves the timeliness and convenience of dealing with water seepage problems and effectively prevents the water seepage situation from worsening.

[0049] Example 3

[0050] A water-stopping method for a multi-seal water-stopping structure for underground diaphragm wall joints includes the following steps:

[0051] Step 1: When water seeps out of the outer wall of the first joint pipe 1 and the second joint pipe 2 during use, the seeping water will enter the interior of the mounting cavity 3. As the weight of the water in the mounting cavity 3 gradually increases, the sliding plate 302 moves downward, which in turn drives the top rod 303 to press down on the light touch switch 304, and correspondingly opens the rotary drive 402 to start working.

[0052] Step 2: When the rotary drive 402 is triggered by the automatic switch mechanism to start working, its output end drives the rotating shaft 403 to rotate. When the rotating shaft 403 rotates, it will correspondingly drive the rotating plate 404 to rotate. When the rotating plate 404 rotates, it will drive the rotating magnetic plate 405, the connecting plate 406 and the wiping plate 407 to rotate together.

[0053] Step 3: When the rotating plate 404 drives the rotating magnetic plate 405 to rotate to the position corresponding to the connecting magnetic plate 4012, the connecting magnetic plate 4012 will be attracted by the attraction, which will drive the connecting rod 4011 to move closer to the rotating magnetic plate 405, and accordingly squeeze the sealant inside the storage chamber. Under the squeezing action of the squeezing slide plate 4010, the sealant inside the storage chamber enters the outlet pipe 4015 through the outlet, and then is atomized and sprayed out through the spray mesh on the nozzle plate 4016.

[0054] Step 4: As the rotating plate 404 rotates, the wiping plate 407 will slide along the connection point, evenly applying the sprayed sealant to the connection point of the first connector pipe 1 and the second connector pipe 2.

[0055] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-layer sealing and waterproofing structure for diaphragm wall joints, comprising a first joint pipe (1) and a second joint pipe (2), characterized in that, It also includes: A spray sealing mechanism is used to spray sealant at the connection between the first joint pipe (1) and the second joint pipe (2). The spray sealing mechanism is located inside the first joint pipe (1) and the second joint pipe (2). The spray sealing mechanism includes a fixed vertical plate (4) installed inside the first joint pipe (1). A protective box (401) is fixedly connected to one side of the fixed vertical plate (4). A rotary drive (402) is fixedly connected inside the protective box (401). The output end of the rotary drive (402) A rotating shaft (403) is fixedly connected, and the rotating shaft (403) extends rotatably into the interior of the second connector pipe (2). The outer side wall of the rotating shaft (403) is located inside the first connector pipe (1) and the second connector pipe (2) and a plurality of rotating plates (404) are fixedly connected. Rotating magnetic plates (405) are fixedly connected to both sides of the plurality of rotating plates (404). A connecting plate (406) is fixedly connected to the end of the rotating plate (404), and a wiping plate (407) is connected to the end of the connecting plate (406). An automatic switching mechanism is used to automatically open and close the discharge seal, and the automatic switching mechanism is installed on the first joint pipe (1).

2. The multi-layer sealing and water-stopping structure for diaphragm wall joints according to claim 1, characterized in that, The dispensing sealing mechanism further includes an installation ring (408) installed inside the first connector pipe (1) and the second connector pipe (2). The installation ring (408) has multiple storage chambers inside. A second telescopic element (409) is fixedly connected inside each storage chamber. One end of the second telescopic element (409) is connected to a compression slide plate (4010). A connecting rod (4011) and a fixing rod (4013) are respectively connected to one side of the compression slide plate (4010). One end of the rod (4011) away from the extrusion slide plate (4010) extends slidably to the outside of the mounting ring (408). One end of the connecting rod (4011) is located outside the mounting ring (408) and is connected to a connecting magnetic plate (4012). One end of the fixing rod (4013) is connected to a baffle plate (4014). The outer wall of the mounting ring (408) is connected to a plurality of dispensing pipes (4015) that communicate with the inside of the storage chamber. One end of the dispensing pipe (4015) is connected to a nozzle plate (4016) that communicates with its interior.

3. A multi-layer sealing and water-stopping structure for a diaphragm wall joint according to claim 2, characterized in that, The connection between one side of the wiping plate (407) and the first connector pipe (1) and the second connector pipe (2) is slidably fitted. The first connector pipe (1) and the second connector pipe (2) are connected and fixed by flanges. The rotating magnetic plate (405) and the connecting magnetic plate (4012) are arranged to attract each other with opposite poles. The outer wall of the extrusion slide plate (4010) is slidably fitted with the inner wall of the storage chamber.

4. A multi-layer sealing and water-stopping structure for a diaphragm wall joint according to claim 2, characterized in that, The bottom of the reservoir is provided with a sliding groove, which is slidably arranged in correspondence with the baffle plate (4014). A dispensing port is provided on one side of the reservoir. The dispensing pipe (4015) communicates with the interior of the reservoir through the dispensing port. The dispensing port is fitted in correspondence with the baffle plate (4014). Multiple spray mesh holes are provided on the nozzle plate (4016).

5. A multi-layer sealing and water-stopping structure for a joint of a diaphragm wall according to claim 2, characterized in that, The automatic switching mechanism includes an installation cavity (3) opened on the top of the outer wall of the first connector pipe (1). A first telescopic element (301) is fixedly connected inside the installation cavity (3). A sliding plate (302) is connected to one end of the first telescopic element (301). A top rod (303) is connected to the bottom of the sliding plate (302). A tactile switch (304) is connected to the bottom of the inner wall of the installation cavity (3).

6. A multi-layer sealing and water-stopping structure for a diaphragm wall joint according to claim 5, characterized in that, The outer wall of the sliding plate (302) and the inner wall of the mounting cavity (3) are slidably fitted together, and the top rod (303) and the tactile switch (304) are correspondingly pressed together.

7. A multi-layer sealing and water-stopping structure for a diaphragm wall joint according to claim 5, characterized in that, The tactile switch (304) is used to turn on the rotary drive (402).

8. A water-stopping method for a multi-seal water-stopping structure used in the joints of underground diaphragm walls, characterized in that, Includes the following steps: Step 1: When the outer walls of the first joint pipe (1) and the second joint pipe (2) leak during use, the leaked water will enter the interior of the mounting cavity (3). As the weight of the water in the mounting cavity (3) gradually increases, the sliding plate (302) moves downward, which in turn drives the top rod (303) to press down on the touch switch (304), and correspondingly opens the rotary drive (402) to start working. Step 2: When the rotary drive (402) is triggered by the automatic switch mechanism to start working, its output end drives the rotating shaft (403) to rotate. When the rotating shaft (403) rotates, it will correspondingly drive the rotating plate (404) to rotate. When the rotating plate (404) rotates, it will drive the rotating magnetic plate (405), the connecting plate (406) and the wiping plate (407) to rotate together. Step 3: When the rotating plate (404) drives the rotating magnetic plate (405) to rotate to the position corresponding to the connecting magnetic plate (4012), the connecting magnetic plate (4012) will be attracted by the attraction, which will drive the connecting rod (4011) to move closer to the rotating magnetic plate (405), and accordingly squeeze the sealant inside the storage chamber. Under the squeezing action of the squeezing slide plate (4010), the sealant inside the storage chamber enters the outlet pipe (4015) through the outlet, and then is atomized and sprayed out through the spray mesh on the nozzle plate (4016). Step 4: During the rotation of the rotating plate (404), the wiping plate (407) will slide along the connection and evenly apply the sprayed sealant to the connection between the first joint pipe (1) and the second joint pipe (2).

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