Water conservancy project seepage-proofing and water-stopping structure and construction method thereof

Abstract

The application relates to the technical field of water conservancy projects, and particularly discloses a water conservancy project anti-seepage and water-stopping structure which is installed at the connecting position of a first pipeline and a second pipeline, comprises a locking mechanism for locking and fixing the butt joint position of the first pipeline and the second pipeline, and the butt joint position of the first pipeline and the second pipeline is provided with an anti-seepage structure. The locking mechanism can lock and fix the connecting position of the first pipeline and the second pipeline, thereby realizing the close connection between the first pipeline and the second pipeline, reducing the possibility of the first pipeline and the second pipeline falling off under the impact of water flow or during an earthquake, and the anti-seepage structure can realize water-tight sealing of the connecting position of the first pipeline and the second pipeline, thereby realizing better anti-seepage effect in cooperation with the locking mechanism.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water conservancy projects, in particular to a water conservancy project anti-seepage and water-stopping structure and a construction method thereof. BACKGROUND

[0002] The water conservancy project refers to various projects built for the purpose of controlling, regulating and utilizing natural surface water and underground water to achieve the purpose of eliminating harm and benefiting, mainly including building dikes, constructing reservoirs, building water gates, utilizing storage and flood diversion areas, and establishing drainage systems.

[0003] In the drainage system, large pipes need to be laid and installed. In the actual installation process, the large pipes need to be pre-buried and installed in sections. The specific construction steps are as follows: first, a trench is excavated on the ground where the large pipes need to be buried to facilitate the installation of the large pipes, then the two large pipes are transported into the trench, and then a hoist or other mechanical equipment is used to clamp and connect the two large pipes. A waterproof sealing gasket is arranged at the joint of the two adjacent large pipes to prevent water leakage. After the connection and installation of a group of large pipes are completed, the same method is used to sequentially complete the connection and fixation between other pipes, thereby achieving the laying and installation of the large pipes.

[0004] According to the related technology in the above, since the connection between the two adjacent large pipes is only fixed by clamping, on the one hand, when a large amount of water flows through the large pipes, strong water pressure will be generated, which may cause the joint between the two adjacent large pipes to leak; on the other hand, when a small earthquake occurs, the joint between the two adjacent large pipes will also leak due to the earthquake vibration, so it needs to be improved. SUMMARY

[0005] In order to improve the connection stability between adjacent large pipes, the application provides a water conservancy project anti-seepage and water-stopping structure and a construction method thereof.

[0006] On the one hand, the application provides a water conservancy project anti-seepage and water-stopping structure, which adopts the following technical scheme:

[0007] A water conservancy project anti-seepage and water-stopping structure is installed at the joint of a first pipe and a second pipe, comprising a locking mechanism for locking and fixing the joint of the first pipe and the second pipe, and the joint of the first pipe and the second pipe is provided with an anti-seepage structure.

[0008] By adopting the technical scheme, the locking mechanism can lock and fix the connection part of the first pipeline and the second pipeline, so as to realize the close connection between the first pipeline and the second pipeline, reduce the possibility of the first pipeline and the second pipeline falling off when water flow impacts or earthquakes occur, and the anti-seepage structure can realize waterproof sealing of the connection part of the first pipeline and the second pipeline, and cooperate with the locking mechanism to realize better anti-seepage effect.

[0009] Optionally, the anti-seepage structure comprises a socket part and a socket opening respectively arranged at the end of the first pipeline and the second pipeline, the socket part is arranged in the socket opening, and a waterproof sealing pad layer is arranged at the connection part of the socket part and the socket opening.

[0010] By adopting the technical scheme, when the first pipeline and the second pipeline need to be docked with each other, the socket part and the socket opening of the first pipeline and the second pipeline are fixed by using hoisting equipment and cooperating with construction personnel, so as to realize the connection and fixation between the first pipeline and the second pipeline, and the waterproof sealing pad layer can realize waterproof sealing of the socket part of the first pipeline and the second pipeline, so as to reduce the possibility of leakage at the connection part of the first pipeline and the second pipeline.

[0011] Optionally, the locking mechanism comprises a mounting cylinder slidably arranged at the connection part of the first pipeline and the second pipeline, a fixing structure for fixing the mounting cylinder on the second pipeline, and a fixing assembly for limiting and fixing the connection of the first pipeline and the second pipeline.

[0012] By adopting the technical scheme, when the first pipeline and the second pipeline need to be installed, the mounting cylinder is first fixed on the end of the second pipeline through the fixing structure, then the end of the first pipeline and the end of the second pipeline are fixed by being inserted into each other, and then the fixing assembly is used to limit and fix the first pipeline and the second pipeline, so that the socket part of the first pipeline and the second pipeline can stably maintain a sealed state, and the possibility of leakage is reduced.

[0013] Optionally, the fixing structure comprises a sliding block fixedly arranged on the inner circumferential wall of the mounting cylinder, and a guide groove and a limiting groove corresponding to the sliding block and arranged on the outer circumferential wall of the second pipeline, the guide groove extends along the length direction of the second pipeline, the limiting groove is arranged on the outer circumferential wall of the second pipeline along the circumferential direction of the outer circumferential wall of the second pipeline, and the end of the guide groove away from the end of the second pipeline communicates with the limiting groove, and the sliding block can be slid into the guide groove and the limiting groove in sequence.

[0014] By adopting the technical scheme, the slider on the mounting cylinder is aligned with the guide groove, the mounting cylinder is pushed to slide along the second pipeline, at this time, the slider slides along the guide groove, when the slider slides to the end of the guide groove, the mounting cylinder is rotated to make the slider slide into the limiting groove from the end of the guide groove, so that the mounting cylinder is fixedly installed at the end of the second pipeline.

[0015] Optionally, an installation groove is formed in the inner circumferential wall of the mounting cylinder, a limiting hole is formed in the outer circumferential wall of the first pipeline, and the fixing assembly comprises a first plug-in column slidingly installed in the installation groove and a first elastic member driving the end of the first plug-in column to extend out of the installation groove.

[0016] When the first pipeline and the second pipeline are butt-jointed, the installation groove is opposite to the limiting hole, and the mounting cylinder further comprises limiting structure for limiting the end of the first plug-in column extending out of the installation groove.

[0017] By adopting the technical scheme, when the first pipeline and the second pipeline are butt-jointed, at this time, the installation groove is opposite to the limiting hole, under the elastic force of the first elastic member, the end of the first plug-in column is plugged into the limiting hole, at this time, the first plug-in column can limit and fix the connection between the first pipeline and the second pipeline fixed by mutual socketing, so that the connection between the first pipeline and the second pipeline is more stable.

[0018] Optionally, a placing groove is formed in the inner wall of the mounting cylinder, the length direction of the placing groove is perpendicular to the length direction of the installation groove, and one end of the placing groove penetrates through the side wall of the installation groove and communicates with the inner cavity of the installation groove.

[0019] The limiting structure comprises a second plug-in column slidingly plugged into the placing groove and a second elastic member driving the end of the second plug-in column to extend into the installation groove from the placing groove, a positioning hole is formed in the circumferential wall of the first plug-in column and corresponding to the second plug-in column, and the end of the second plug-in column is plugged into the positioning hole under the driving of the second elastic member.

[0020] The mounting cylinder further comprises an unlocking assembly for unlocking the end of the second plug-in column from the positioning hole.

[0021] By adopting the technical scheme, when the end of the first pipeline is not plugged into the mounting cylinder, the second plug-in column is plugged into the positioning hole under the elastic force of the second elastic member, at this time, the end of the first plug-in column does not extend out of the installation groove, at this time, the end of the first plug-in column does not affect the installation of the first pipeline; when the first pipeline is plugged into the mounting cylinder, the second pipeline can drive the unlocking assembly to be unlocked, so that the second plug-in column can be pulled out of the positioning hole, at this time, the first plug-in column extends into the limiting hole under the elastic force of the first elastic member, and the connection between the first pipeline and the second pipeline is fixed.

[0022] Optionally, the unlocking assembly comprises a gear rotatably installed in the inner wall of the mounting cylinder and a rack fixed on the outer peripheral wall of the second inserting column, and the outer peripheral wall of the first pipeline is provided with a wheel groove corresponding to the gear.

[0023] By adopting the above technical scheme, when the first pipeline is inserted into the mounting cylinder, the wheel groove on the outer peripheral wall of the first pipeline drives the gear to rotate, the gear rotates to drive the rack engaged therewith to move, so that the end of the second inserting column is extracted from the positioning hole, thereby completing the unlocking of the first inserting column and enabling the first inserting column to be inserted into the limiting hole.

[0024] Optionally, the tooth surface of the gear is divided into two sections, the rack is engaged with one section of the gear, the wheel groove is engaged with the other section of the gear, and the first inserting column is further provided with a locking hole, when the first inserting column is inserted into the limiting hole, the second inserting column is inserted into the locking hole under the driving of the second elastic member.

[0025] By adopting the above technical scheme, when the first pipeline is inserted into the mounting cylinder, the second inserting column is extracted from the positioning hole first, and then the first pipeline is continuously inserted, at this time, the wheel groove and the rack are not engaged with the tooth surface of the gear, and under the elastic force of the second elastic member, the second inserting column is inserted into the locking hole, thereby achieving the locking and fixing of the first inserting column, so that the connection between the first pipeline and the second pipeline is kept in a stable state.

[0026] Optionally, a torsional spring is installed on the rotation axis of the gear to drive the gear to reset.

[0027] By adopting the above technical scheme, the torsional spring can keep the gear in the initial state, and the first pipeline can stably drive the gear to rotate, so as to realize the subsequent locking and fixing of the first pipeline and the second pipeline.

[0028] On the other hand, the application further provides a construction method of a water conservancy project anti-seepage and water stopping structure, comprising the following steps:

[0029] S1: a trench is excavated in advance on the ground, and the first pipeline and the second pipeline are lowered into the trench by using hoisting equipment;

[0030] S2: the mounting cylinder is clamped and installed at the end of the second pipeline, and a mechanical device is used to push the first pipeline, thereby completing the butt joint of the connection part of the first pipeline and the second pipeline;

[0031] S3: sealant is applied to the connection part of the mounting cylinder and the first pipeline and the second pipeline for waterproof sealing, thereby completing the connection and fixing of the first pipeline and the second pipeline.

[0032] To sum up, the present application comprises at least one of the following beneficial technical effects:

[0033] 1. The locking mechanism can lock and fix the connection between the first pipe and the second pipe, thereby realizing the tight connection between the first pipe and the second pipe, reducing the possibility of the first pipe and the second pipe falling off when water flow impacts or earthquakes occur, and the anti-seepage structure can waterproof and seal the connection between the first pipe and the second pipe, thereby realizing better anti-seepage effect in cooperation with the locking mechanism.

[0034] 2. The limiting structure can lock and limit the end of the first plug-in column, so that when the first pipe is not plugged into the mounting cylinder, the end of the first plug-in column is located in the mounting groove.

[0035] 3. The unlocking assembly can unlock the first plug-in column during the process of plugging the first plug-in column into the mounting cylinder, so that when the first pipe and the second pipe are socketed and fixed, the end of the first plug-in column is plugged into the limiting hole. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall structure of a water conservancy anti-seepage and water stop structure in the embodiment of the present application.

[0037] Figure 2 is Figure 1 is an exploded structure schematic diagram of part of the structure.

[0038] Figure 3 is Figure 1 is a sectional view of a water conservancy anti-seepage and water stop structure.

[0039] Figure 4 is Figure 3 is an enlarged view of A in

[0040] Reference signs: 1, first pipe; 11, limiting hole; 12, wheel groove; 2, second pipe; 3, locking mechanism; 31, mounting cylinder; 311, mounting groove; 312, placing groove; 32, fixing structure; 321, sliding block; 322, guide groove; 323, limiting groove; 33, fixing assembly; 331, first plug-in column; 3311, positioning hole; 3312, locking hole; 332, first elastic member; 4, anti-seepage structure; 41, socket part; 42, socket; 5, limiting structure; 51, second plug-in column; 52, second elastic member; 6, unlocking assembly; 61, gear; 62, rack. DETAILED DESCRIPTION

[0041] The present application will be further described in detail below in combination with the accompanying Figures 1-4 The present application will be further described in detail below in combination with the accompanying

[0042] The present application discloses a water conservancy anti-seepage and water stop structure.

[0043] Referring to Figure 1 , Figure 2 and Figure 3 , a water conservancy project anti-seepage structure is installed at the connection of a first pipeline 1 and a second pipeline 2, comprising a locking mechanism 3 for locking and fixing the butt joint of the first pipeline 1 and the second pipeline 2, and an anti-seepage structure 4 for preventing seepage at the butt joint of the first pipeline 1 and the second pipeline 2. In this embodiment, the locking mechanism 3 is symmetrically provided with two groups about the connection of the first pipeline 1 and the second pipeline 2.

[0044] In the related art, the connection of the pipelines is only connected and fixed by relying on the weight of the pipelines and the clamping connection between the adjacent pipelines. Although good stability can be maintained under the action of the gravity of the soil, the impact force at the connection of the adjacent pipelines is also large due to the large flow velocity of the water in the pipelines. Over a long period of time, the pipelines are prone to seepage. In addition, the external environment such as earthquake can also affect the connection stability between the adjacent pipelines, resulting in the possibility of seepage between the pipelines. The present application is improved in view of this.

[0045] It is worth noting that in the present application, the connection between any two adjacent pipelines in the installation of the water conservancy project is described, that is, the first pipeline 1 and the second pipeline 2 in the present application, and the connection mode between the first pipeline 1 and the second pipeline 2 is not the only setting mode of the present application.

[0046] In this embodiment, the anti-seepage structure 4 comprises a socket 41 and a socket 42 provided at the end of the first pipeline 1 and the second pipeline 2, respectively. Referring to Figure 3 , the socket 41 and the socket 42 are matched with each other, and the socket 41 is clamped in the socket 42. In order to ensure the sealing performance of the socket connection, a waterproof sealing pad layer is provided at the connection of the socket 41 and the socket 42, which is not shown in the figure. The waterproof sealing pad layer can be made of rubber or silicone, and in this embodiment, the waterproof sealing pad layer is made of rubber pad.

[0047] The locking mechanism 3 comprises a mounting cylinder 31, a fixing structure 32 and a fixing assembly 33, as shown in Figure 2 , Figure 3 and Figure 4 , the mounting cylinder 31 is slidably sleeved at the connection of the first pipeline 1 and the second pipeline 2, and the fixing structure 32 can fixedly mount one end of the mounting cylinder 31 at the end of the second pipeline 2. In this embodiment, the mounting cylinder 31 is fixedly mounted on the second pipeline 2 through the fixing structure 32. In other embodiments, the mounting cylinder 31 can also be fixedly mounted on the first pipeline 1 through the fixing structure 32. In this embodiment, the mounting cylinder 31 is preferably fixed at the end of the second pipeline 2.

[0048] The fixing structure 32 can fix the end of the mounting cylinder 31, and the fixing assembly 33 can limit and fix the connection between the first pipeline 1 and the second pipeline 2 which are mutually connected, so as to realize the connection and fixation between the first pipeline 1 and the second pipeline 2.

[0049] In the process of abutting the first pipeline 1 and the second pipeline 2, in order to make the fixing and locking of the fixing assembly 33 more accurate, in other embodiments, a guide structure for positioning and guiding can be arranged on the outer peripheral wall of the first pipeline 1 and the inner peripheral wall of the mounting cylinder 31, so as to facilitate more accurate installation of the first pipeline 1.

[0050] Specifically, the fixing structure 32 includes a sliding block 321, a guide groove 322 and a limiting groove 323, referring to Figure 2 , the sliding block 321 is fixed on the inner peripheral wall of the mounting cylinder 31 in an integrated manner, and correspondingly, the guide groove 322 and the limiting groove 323 are arranged on the outer peripheral wall of the second pipeline 2 corresponding to the sliding block 321. The guide groove 322 extends along the length direction of the second pipeline 2, and the limiting groove 323 is arranged on the outer peripheral wall of the second pipeline 2 along the circumferential direction of the outer peripheral wall of the second pipeline 2, and the end of the guide groove 322 away from the end of the second pipeline 2 is communicated with the limiting groove 323.

[0051] In construction, first, the second pipeline 2 is placed in the pre-excavated channel, the sliding block 321 on the mounting cylinder 31 is aligned with the slot of the guide groove 322, the mounting cylinder 31 is sleeved on the end of the second pipeline 2, in the sleeving process, the sliding block 321 slides along the guide groove 322, when the sliding block 321 slides to the end of the guide groove 322, the mounting cylinder 31 is rotated, so that the sliding block 321 slides into the limiting groove 323, thereby realizing the effect of fixing the mounting cylinder 31 on the end of the second pipeline 2.

[0052] In this embodiment, in order to make the fixing effect of the mounting cylinder 31 better, the slot width and the slot depth of the end of the limiting groove 323 away from the guide groove 322 gradually decrease, at this time, in the process of rotating the mounting cylinder 31, the sliding block 321 will be gradually clamped in the limiting groove 323, so as to achieve better fixing effect and reduce the possibility of mutual falling off of the mounting cylinder 31 and the end of the second pipeline 2.

[0053] The fixing assembly 33 includes a first plug-in column 331 and a first elastic member 332, as Figure 4 shown, the mounting groove 311 is arranged on the inner peripheral wall of the mounting cylinder 31, the limiting hole 11 is arranged on the outer peripheral wall of the first pipeline 1, the first plug-in column 331 is slidingly installed in the mounting groove 311, and the first elastic member 332 is a spring in this embodiment, and in other embodiments, other features capable of pushing the end of the first plug-in column to extend out of the mounting groove 311 can also be selected for replacement, and the spring in this application is only a preferred embodiment;

[0054] One end of the spring is welded and fixed at the bottom of the mounting groove 311, and the other end is welded and fixed with the end of the first plug-in column 331. When the first pipe 1 and the second pipe 2 are completed, the mounting groove 311 is opposite to the limiting hole 11. At this time, without being limited by other structures, the first elastic member 332 can drive the first plug-in rod end to be inserted into the limiting hole 11, so as to realize the locking and fixing of the first pipe 1.

[0055] Before completing the butt joint, in order to prevent the first plug-in rod end from extending out of the mounting groove 311 and affecting the installation of the first pipe 1, the limiting structure 5 for limiting the end of the first plug-in column 331 extending out of the mounting groove 311 is further arranged in the mounting cylinder 31.

[0056] As shown in Figure 4 , the limiting structure 5 includes a second plug-in column 51 and a second elastic member 52. The placement groove 312 is arranged in the inner wall of the mounting cylinder 31. The length direction of the placement groove 312 is perpendicular to the mounting groove 311, and one end of the placement groove 312 penetrates the side wall of the mounting groove 311 and communicates with the inner cavity of the mounting groove 311.

[0057] The second plug-in column 51 is slidingly inserted into the placement groove 312. The second elastic member 52 is also a spring. One end of the second elastic member 52 is fixed with the inside of the placement groove 312, and the other end is fixed with the second plug-in column 51. The second plug-in column 51 can extend into the mounting groove 311 under the elastic force of the second elastic member 52.

[0058] As shown in Figure 4 , the positioning hole 3311 is arranged on the outer peripheral wall of the first plug-in column 331 corresponding to the second plug-in column 51. In the initial state, the end of the second plug-in column 51 is inserted into the positioning hole 3311 under the driving of the second elastic member 52, so as to realize the limiting and locking of the first plug-in column 331, and prevent the end of the first plug-in column 331 from extending out of the mounting groove 311.

[0059] In order to realize that the first plug-in column 331 is inserted into the limiting hole 11 when the first pipe 1 and the second pipe 2 are butt jointed, the unlocking assembly 6 for unlocking the end of the second plug-in column 51 from the positioning hole 3311 is further arranged in the mounting cylinder 31.

[0060] The unlocking assembly 6 includes a gear 61 and a rack 62. As shown in Figure 3 and Figure 4 , the gear 61 is rotatably arranged in the inner wall of the mounting cylinder 31. The torsional spring for keeping the gear 61 in place is arranged on the rotation axis of the gear 61. The rack 62 is fixedly arranged on the outer peripheral wall of the second plug-in column 51. The wheel groove 12 is arranged on the outer peripheral wall of the first pipe 1 along the length direction of the first pipe 1. The wheel groove 12 can drive the gear 61 to rotate.

[0061] When the first pipe 1 is inserted into the mounting cylinder 31, the wheel groove 12 can drive the gear 61 to rotate. The rotation of the gear 61 drives the end of the second insertion post 51 to be pulled out from the positioning hole 3311, thereby unlocking the first insertion post 331. When the first insertion post 331 is inserted into the limiting hole 11, the first pipe 1 is limited and locked.

[0062] Furthermore, the tooth surface of gear 61 is broken into two sections, so that rack 62 meshes with one section of gear 61 and groove 12 meshes with the other section of gear 61. During the process of inserting the first pipe 1 into the mounting cylinder 31, groove 12 drives one section of the tooth surface of gear 61 to rotate, causing gear 61 to rotate. When the first pipe 1 and the second pipe 2 are inserted and fixed, groove 12 no longer meshes with the tooth surface of gear 61. At this time, rack 62 no longer meshes with the other section of the tooth surface of gear 61. At this time, under the push of the second elastic element 52, the end of the second insertion post 51 is inserted into the mounting groove 311 again.

[0063] like Figure 4 As shown, a locking hole 3312 is provided on the first insertion post 331. When the first insertion post 331 is inserted into the limiting hole 11, the second insertion post 51 is inserted into the locking hole 3312 under the action of the second elastic member 52, thereby realizing the mutual locking of the entire structure and making the connection between the first pipe 1 and the second pipe 2 more stable.

[0064] The implementation principle of the water-proof and water-stopping structure for water conservancy projects in this application embodiment is as follows: First, the installation cylinder 31 is fixed to the end of the second pipe 2 through the fixing structure 32. Then, the first pipe 1 is inserted into the other end of the installation cylinder 31, so that the first pipe 1 and the second pipe 2 are mutually inserted and fixed. During the insertion and fixing process, the first pipe 1 is unlocked by the unlocking component 6 so that the limiting structure 5 no longer limits the end of the first insertion post 331. At this time, the end of the first insertion post 331 is inserted into the limiting hole 11 to realize the limiting and locking of the first pipe 1. Finally, the second insertion post 51 is pushed into the positioning hole 3311 under the push of the second elastic member 52 to realize the fixing of the first pipe 1, thereby realizing the connection and fixing of the first pipe 1 and the second pipe 2.

[0065] This application also discloses a construction method for a seepage prevention and water-stopping structure in a water conservancy project, including the following steps:

[0066] S1: Excavate a trench in advance on the ground, and lower the first pipe 1 and the second pipe 2 into the trench using hoisting equipment;

[0067] S2: The mounting cylinder 31 is snapped into the end of the second pipe 2, and the first pipe 1 is pushed by mechanical equipment to complete the connection between the first pipe 1 and the second pipe 2.

[0068] S3: Apply sealant to the connection between the mounting cylinder 31 and the first pipe 1 and the second pipe 2 for waterproof sealing, and complete the connection and fixation of the first pipe 1 and the second pipe 2.

[0069] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hydraulic engineering anti-seepage structure installed at the connection of a first pipe (1) and a second pipe (2), characterized in that: The locking mechanism (3) includes a mounting cylinder (31) slidingly sleeved at the connecting position of the first pipeline (1) and the second pipeline (2), a fixing structure (32) for fixing the mounting cylinder (31) on the second pipeline (2), and a fixing assembly (33) for limiting and fixing the connection of the first pipeline (1) and the second pipeline (2); The inner circumferential wall of the mounting cylinder (31) is provided with a mounting groove (311), the outer circumferential wall of the first pipeline (1) is provided with a limiting hole (11), and the fixing assembly (33) comprises a first plug-in column (331) slidingly installed in the mounting groove (311) and a first elastic member (332) driving the end of the first plug-in column (331) to extend out of the mounting groove (311); When the first pipeline (1) and the second pipeline (2) are connected, the mounting groove (311) is opposite to the limiting hole (11), and the mounting cylinder (31) is further provided with a limiting structure (5) for limiting the end of the first plug-in column (331) extending out of the mounting groove (311); The fixing structure (32) comprises a sliding block (321) fixedly arranged on the inner circumferential wall of the mounting cylinder (31), and a guide groove (322) and a limiting groove (323) corresponding to the sliding block (321) and arranged on the outer circumferential wall of the second pipeline (2), the guide groove (322) extends along the length direction of the second pipeline (2), the limiting groove (323) is arranged on the outer circumferential wall of the second pipeline (2) along the circumferential direction of the outer circumferential wall of the second pipeline (2), and the end of the guide groove (322) away from the second pipeline (2) is communicated with the limiting groove (323), and the sliding block (321) can be slid into the guide groove (322) and the limiting groove (323) in sequence; The inner wall of the mounting cylinder (31) is provided with a placing groove (312), the length directions of the placing groove (312) and the mounting groove (311) are perpendicular, and one end of the placing groove (312) penetrates the side wall of the mounting groove (311) and is communicated with the inner cavity of the mounting groove (311); The limiting structure (5) comprises a second plug-in column (51) slidingly plugged in the placing groove (312) and a second elastic member (52) driving the end of the second plug-in column (51) to extend into the mounting groove (311) from the placing groove (312), and the circumferential wall of the first plug-in column (331) is provided with a positioning hole (3311) corresponding to the second plug-in column (51), and the end of the second plug-in column (51) is plugged into the positioning hole (3311) under the driving of the second elastic member (52). ​ An unlocking assembly (6) is arranged in the mounting cylinder (31) and is used for unlocking the end of the second plug-in column (51) from the positioning hole (3311).

2. The seepage-preventing and water-stopping structure for hydraulic engineering according to claim 1, characterized in that: The anti-seepage structure (4) comprises a socket part (41) and a socket mouth (42) arranged at the end of the first pipeline (1) and the second pipeline (2) respectively, the socket part (41) is arranged in the socket mouth (42) in a socket manner, and a waterproof sealing pad layer is arranged at the connection part of the socket part (41) and the socket mouth (42).

3. The seepage-preventing and water-stopping structure for hydraulic engineering according to claim 1, characterized in that: The unlocking assembly (6) comprises a gear (61) rotatably arranged in the inner wall of the mounting cylinder (31) and a rack (62) fixed on the outer peripheral wall of the second plug-in column (51), and a wheel groove (12) is arranged on the outer peripheral wall of the first pipeline (1) and is used for driving the gear (61) to rotate.

4. The seepage-preventing and water-stopping structure for hydraulic engineering according to claim 3, characterized in that: The tooth surface of the gear (61) is divided into two sections, the rack (62) is engaged with one section of the gear (61), the wheel groove (12) is engaged with the other section of the gear (61), and a locking hole (3312) is arranged on the first plug-in column (331), when the first plug-in column (331) is inserted into the limiting hole (11), the second plug-in column (51) is inserted into the locking hole (3312) under the driving of the second elastic member (52).

5. The seepage-preventing and water-stopping structure for hydraulic engineering according to claim 3, characterized in that: A torsional spring is arranged on the rotation axis of the gear (61) and is used for driving the gear (61) to reset.

6. The construction method of a seepage-proof and water-stop structure of hydraulic engineering according to any one of claims 1-5, characterized in that: The method comprises the following steps: S1: a trench is excavated in advance on the ground, the first pipeline (1) and the second pipeline (2) are placed into the trench by using hoisting equipment; S2: the mounting cylinder (31) is clamped and installed at the end of the second pipeline (2), the first pipeline (1) is pushed by using mechanical equipment, and the butt joint of the connection part of the first pipeline (1) and the second pipeline (2) is completed; S3: sealing glue is applied at the connection part of the mounting cylinder (31), the first pipeline (1) and the second pipeline (2) to achieve waterproof sealing, and the connection and fixation of the first pipeline (1) and the second pipeline (2) are completed.

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