Rubber waterstop, prefabricated water channel and construction method of prefabricated water channel

Abstract

The invention relates to the technical field of water conservancy facilities, and particularly provides a rubber waterstop, a prefabricated water channel and a construction method of the prefabricated water channel. A rubber waterstop is arranged on the inner side of a splicing seam of the two spliced canal bodies; a high-pressure jet dredging pipe network is arranged at the bottom of the spliced and assembled canal body; an opening and closing type turbulent flow device is arranged on the inner side of the canal body; the rubber waterstop comprises a curved-surface-shaped flexible part and fixing assemblies arranged on the two sides of the flexible part. The flexible part covers the splicing seam, and the opening and closing type turbulent flow device comprises a flow baffle and a hydraulic rod. The desilting system and the long-acting waterproof structure are integrated through the prefabricated structure, the problems that in the prior art, a water channel is difficult to maintain and short in waterproof service life are solved, and meanwhile construction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy facilities, and in particular relates to a rubber waterstop, a prefabricated assembled water channel and a construction method thereof. Background Art

[0002] In the prior art, grouting is often used to seal the canal joints, which is prone to aging and failure after long-term use; dredging requires manual or mechanical entry into the canal, which poses safety risks and has low dredging efficiency. Therefore, there is an urgent need for an assembled canal that integrates waterproofing and dredging functions to overcome the above problems. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a rubber waterstop, a prefabricated assembled canal and a construction method thereof, which solves the problems of difficult canal maintenance and short waterproof life at joints in the prior art by integrating a dredging system and a long-lasting waterproof structure in the canal, while improving construction efficiency.

[0004] In a first aspect, the present invention provides a rubber water stop, which is arranged on the inner side of a joint seam of two spliced ​​water channel bodies; the rubber water stop comprises a curved flexible portion and fixing components arranged on both sides of the flexible portion; the flexible portion covers the joint seam, and the fixing components on both sides thereof are fixedly connected to the water channel bodies on both sides of the joint seam respectively; The fixing assembly includes a limit strip, a pressure strip and a fastener; the limit strip is laid on the inner wall of the channel body and pressed against the side end of the flexible part; a third groove is provided at the end of the flexible part facing away from the channel body; one end of the pressure strip is embedded in the third groove, and the other end is pressed against the upper end of the limit strip; the fastener fastens the limit strip and the channel body, and the fastener also fastens the pressure strip, the limit strip and the channel body, and the fastener also fastens the pressure strip, the flexible part and the channel body.

[0005] Furthermore, a second groove is provided on the end surface of the channel body in contact with the limit strip, and the limit strip is provided with a second protrusion embedded in the second groove; a first protrusion extending toward the channel body is provided on the side end of the flexible part pressed against the limit strip; a first groove is provided on the inner wall of the channel body along the joint; and the first protrusion is filled in the first groove.

[0006] In a second aspect, the present invention further proposes a prefabricated assembled water channel, comprising a plurality of water channel bodies spliced ​​and assembled along the length direction; a rubber water stop strip is arranged on the inner side of the splicing seam of the two spliced ​​water channel bodies; a high-pressure jet desilting pipe network is arranged on the bottom of the spliced ​​and assembled water channel bodies; an openable and closable flow spoiler is arranged on the inner side of the water channel body; The rubber water stop comprises a curved flexible portion and fixing components arranged on both sides of the flexible portion; the flexible portion covers the joint, and the fixing components on both sides thereof are respectively fixedly connected to the water channel body on both sides of the joint; The high-pressure jet desilting pipe network includes a pipe network unit arranged at the bottom of each of the water channel bodies and a connection assembly connecting adjacent pipe network units; the pipe network unit includes a main pipe, one or more branch pipes connected to the main pipe, and a high-pressure nozzle arranged on the branch pipe; at least one of the connection assemblies is also connected to a high-pressure water pump; The opening and closing spoiler device includes a baffle and a hydraulic rod; one end of the baffle is hinged to the water channel body, and the other end is hinged to one end of the hydraulic rod; the other end of the hydraulic rod is hinged to the water channel body for driving the baffle to open and close.

[0007] Furthermore, a notch groove is provided on the inner wall of the water channel body at the joint; the connecting assembly includes a sleeve and two L-shaped pipes threadedly connected to the two ends of the sleeve; the sleeve is located in the notch groove; the other ends of the two L-shaped pipes are respectively connected to the main pipes of the two adjacent pipe network units.

[0008] Furthermore, the L-shaped pipe includes a positioning pipe and a connecting pipe; the upper end of the positioning pipe is fixedly connected to the main pipe; the inner wall of the channel body is provided with an L-shaped positioning hole; the L-shaped positioning hole includes a vertical hole and a horizontal hole; the lower end of the positioning pipe is inserted into the vertical hole, and the connecting pipe extends into the horizontal hole, one end of the connecting pipe is threadedly connected to the positioning pipe, and the other end is threadedly connected to the sleeve.

[0009] Furthermore, the fixing assembly includes a limit strip, a pressure strip and a fastener; the limit strip is laid on the inner wall of the channel body and pressed against the side end of the flexible part; a third groove is provided at one end of the flexible part facing away from the channel body; one end of the pressure strip is embedded in the third groove, and the other end is pressed against the upper end of the limit strip; the fastener fastens the limit strip and the channel body, and the fastener also fastens the pressure strip, the limit strip and the channel body, and the fastener also fastens the pressure strip, the flexible part and the channel body; a second groove is provided on the end surface of the channel body in contact with the limit strip, and the limit strip is provided with a second protrusion embedded in the second groove; a first protrusion extending toward the channel body is provided on the side end of the flexible part pressed against the limit strip; a first groove is provided on the inner wall of the channel body along the splicing seam; the first protrusion fills the first groove.

[0010] Furthermore, a support and limit portion is provided at one end of the flexible portion facing the water channel body; the support and limit portion extends into the notch groove and presses against the end surface of the notch groove; the support and limit portion is located between the first protrusion and the joint seam; the connecting pipe passes through the support and limit portion; and the connecting pipe is provided with a rubber pad and a clamping nut clamped on both sides of the support and limit portion.

[0011] Furthermore, the channel body includes a channel bottom plate, a channel cover plate and two channel side plates; the channel bottom plate and the two channel side plates are cast in place as an integrated U-shaped structure; the two ends of the channel cover plate are respectively built on the top of the two channel side plates; the opening and closing spoiler device is arranged on the inner side of the channel cover plate.

[0012] Furthermore, a casting countersunk hole is provided on the top of the channel side plate, and a casting through hole aligned with the casting countersunk hole is provided at the position of the channel cover plate erected on the channel side plate; steel bars are anchored in the casting countersunk hole, and the steel bars extend into the casting through hole; the channel body also includes concrete filling the casting countersunk hole and the casting through hole.

[0013] In a third aspect, the present invention provides a construction method for a prefabricated water channel, which is applied to the prefabricated water channel, and the construction method comprises the following steps: Prefabricate the water channel body, which includes a water channel bottom plate, a water channel cover plate and two water channel side plates; the water channel bottom plate and the two water channel side plates are cast in place as an integrated U-shaped structure; The pipe network unit of the high-pressure jet desilting pipe network is pre-buried inside the U-shaped structure; the opening and closing spoiler device is installed inside the channel cover plate; Hoisting a plurality of the U-shaped structures to the target position in sequence, and splicing adjacent U-shaped structures; hoisting a channel cover plate on the upper end of each U-shaped structure, and pouring concrete to complete the connection between the channel cover plate and the U-shaped structure; Connecting the adjacent pipe network units using a connecting assembly; The flexible part of the rubber water stop is laid on the inner side of the joint of the water channel body, and the flexible part covers the connecting component, and the flexible part and the water channel body are fixed by a fixing component; The high-pressure water pump is connected to the connecting assembly located in the water channel body at the end.

[0014] The beneficial effects of the present invention are: the joint seam is covered by a curved flexible portion, and the flexible portion can expand and contract with the displacement of the canal body, so that the rubber waterstop of the present invention always maintains a good water-stopping effect. By setting a high-pressure jet dredging pipeline network at the bottom of the canal body, the silt at the bottom of the canal body is flushed with high-pressure water, and the dredging efficiency is high compared to the traditional manual or mechanical cleaning inside the canal. By setting an open and close spoiler device on the inside of the canal body, the spoiler is achieved by opening and closing the baffle, and the inner wall of the canal is flushed by turbulent flow, thereby improving the dredging effect. By setting a rubber waterstop at the joint seam, the waterproofness of the spliced ​​and assembled canal body is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the end structure of the assembled water channel of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of three water channel bodies of the assembled water channel of the present invention being spliced ​​together; Figure 3 It is a schematic diagram of a top view and cross-section structure of a water channel body of the present invention; Figure 4 It is a schematic cross-sectional view of the structure of two water channel bodies spliced ​​together according to the present invention; Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 for Figure 5 Schematic diagram of the structure after the rubber water stop is hidden; Figure 7 for Figure 6 Schematic diagram of the exploded structure of the rubber waterstop.

[0016] In the figure: 1-channel body; 2-rubber water stop; 3-high-pressure jet desilting pipeline network; 4-baffle; 5-hydraulic rod; 6-joint seam; 7-main pipeline; 8-branch pipeline; 9-high-pressure nozzle; 10-high-pressure water pump; 11-flexible part; 12-limiting strip; 13-pressing strip; 14-fastener; 15-first groove; 16-first raised part; 17-second groove; 18-second raised part; 19-third groove; 20-notch groove; 21-support limiting part; 22-inner support strip; 23-sleeve; 24-positioning tube; 25-connecting tube; 26-L-shaped positioning hole; 27-rubber pad; 28-tightening nut; 29-rebar; 30-channel cover; 31-U-shaped structure. DETAILED DESCRIPTION

[0017] The present application is further described in detail below with reference to the accompanying drawings and specific implementations: like Figure 1-Figure 3 As shown, the prefabricated assembled water channel of the present invention comprises a plurality of water channel bodies 1 which are spliced ​​and assembled.

[0018] The channel body 1 includes a channel bottom plate, a channel cover plate 30 and two channel side plates; a U-shaped structure 31 in which the channel bottom plate and the two channel side plates are cast in place as one; the two ends of the channel cover plate 30 are respectively mounted on the top of the two channel side plates; and the opening and closing spoiler device is arranged on the inner side of the channel cover plate 30.

[0019] The top of the channel side plate is provided with a casting countersunk hole, and the portion of the channel cover 30 erected on the channel side plate is provided with a casting through hole aligned with the casting countersunk hole; a steel bar 29 is anchored in the casting countersunk hole, and the steel bar 29 extends into the casting through hole; the channel body also includes concrete filling the casting countersunk hole and the casting through hole.

[0020] A rubber water stop 2 is arranged inside the joint 6 of the two spliced ​​channel bodies 1; a high-pressure jet desilting pipe network 3 is arranged at the bottom of the spliced ​​and assembled channel bodies 1; and an openable and closable flow spoiler is arranged inside the channel body 1.

[0021] like Figure 2 , Figure 4 As shown, the opening and closing spoiler device includes a baffle plate 4 and a hydraulic rod 5; one end of the baffle plate 4 is hinged to the water channel body 1, and the other end is hinged to one end of the hydraulic rod 5. The other end of the hydraulic rod 5 is hinged to the water channel body 1 to drive the baffle plate 4 to open and close. The spoiler plate is arranged at the inner top of the water channel body 1, and the hydraulic rod 5 is arranged on the back surface of the spoiler plate. When turbulence needs to be formed, the hydraulic rod 5 is extended to make the baffle plate 4 drop to the position as shown in FIG. Figure 4 In the state shown, at least a portion of the baffle plate 4 extends into the water body flowing through the canal body 1. When the water body encounters the obstruction of the baffle plate 4, turbulence is formed and flows in all directions. Part of the water body impacts downward to the bottom of the canal body 1, flushing the silt on the bottom and side walls of the canal body 1. The turbid water at the bottom is quickly carried away by the water body, achieving a dredging effect. In addition, it can also flush the high-pressure jet dredging pipe network 3 to avoid clogging or covering the high-pressure jet dredging pipe network 3 with silt, thereby ensuring the dredging effect.

[0022] In some embodiments, the baffle 4 can also be arranged on the side wall or bottom of the water channel body 1, or arranged in a circle along the circumference of the water channel body 1, and through alternating opening and closing or synchronous opening and closing, efficient silting of the water channel body 1 can be achieved. Of course, the opening and closing spoiler device also includes a hydraulic cylinder and corresponding electric controls for driving the hydraulic rod 5 to extend and retract. The hydraulic cylinder and the electric controls can be arranged outside the water channel body 1, and a through hole can be arranged on the top of the water channel body 1 to facilitate the laying or penetration of pipelines.

[0023] In some embodiments, a silt sensor is provided on the side wall or the bottom of the water channel body 1, and the silt sensor is electrically connected to a controller, and the controller is electrically connected to the opening and closing type spoiler device and the high-pressure jetting desilting pipe network 3. When the silt sensor detects that the silt thickness reaches the target value, the controller starts the opening and closing type spoiler device and the high-pressure jetting desilting pipe network 3 to achieve automatic desilting.

[0024] like Figure 2 , Figure 3 As shown, the high-pressure jet desilting pipe network 3 includes a pipe network unit arranged at the bottom of each water channel body 1 and a connecting assembly connecting adjacent pipe network units; the pipe network unit includes a main pipe 7, one or more branch pipes 8 connected to the main pipe 7, and a high-pressure nozzle 9 arranged on the branch pipe 8; at least one connecting assembly is also connected to a high-pressure water pump 10; the high-pressure water pump 10 is also connected to a water supply pipe, and a float is connected to the end of the water supply pipe. The float is in the water channel body 1. Under the action of the water body in the water channel body 1, the float is suspended, so that the high-pressure water pump 10 can draw the water in the water channel body 1 to the pipe network unit through the water supply pipe, so as to achieve high-pressure jet desilting without wasting water resources, saving energy and protecting the environment. A filter can also be set at the end of the water supply pipe to filter the sediment in the water body to avoid clogging of the pipe network unit.

[0025] like Figure 4 , Figure 5 , Figure 7 As shown, the rubber water stop 2 includes a curved flexible portion 11 and fixing components arranged on both sides of the flexible portion 11; the flexible portion 11 covers the splicing seam 6, and the fixing components on both sides thereof are fixedly connected to the channel body 1 on both sides of the splicing seam 6 respectively.

[0026] The fixing assembly includes a limit strip 12, a pressure strip 13 and a fastener 14; The limit strip 12 is laid on the inner wall of the channel body 1 and pressed against the side end of the flexible part 11; the length direction of the limit strip 12 is consistent with the length direction of the joint 6 and is also consistent with the paving direction of the rubber waterstop 2. When the rubber waterstop 2 is laid, its head and tail sections partially overlap to ensure the waterproof effect.

[0027] The end of the flexible portion 11 facing away from the water channel body 1 is provided with a third groove 19 ; the end of the flexible portion 11 facing away from the water channel body 1 is the water-facing surface of the flexible portion 11 .

[0028] One end of the pressure strip 13 is embedded in the third groove 19 , and the other end is pressed tightly against the upper end of the limiting strip 12 ; the pressure strip 13 is an n-shaped rubber strip.

[0029] The fastener 14 fastens the limiting strip 12 and the water channel body 1, and the fastener 14 also fastens the pressure strip 13, the limiting strip 12 and the water channel body 1, and the fastener 14 also fastens the pressure strip 13, the flexible part 11 and the water channel body 1. In this embodiment, the fastener 14 can be a fastening bolt.

[0030] The pressure strip 13 is fixed to the flexible part 11 by the fastener 14, the limit strip 12 is pressed against the flexible part 11, and then the limit strip 12 is fixed to the water channel body 1 by the fastener 14, so as to limit the flexible part 11 from moving in the direction of water flow, that is, to limit the displacement of the flexible part 11 in the direction perpendicular to the splicing seam 6. The flexible part 11 adopts a curved structure, which has a plurality of crests and troughs, and can effectively absorb the extrusion force or tension of the axial displacement of the spliced ​​water channel body 1, and the axial direction is the water flow direction. The settlement or cracking of the foundation will affect the quality of the splicing of the water channel body 1 in the later stage, and gaps or drops are prone to appear at the splicing seam 6. The flexible part 11 used in this embodiment can well adapt to the displacement of the splicing seam 6 to ensure the waterproof effect.

[0031] The end surface of the water channel body 1 in contact with the limit strip 12 is provided with a second groove 17, and the limit strip 12 is provided with a second protrusion 18 embedded in the second groove 17. By providing a second groove 17 that cooperates with the limit strip 12 on the water-facing surface of the water channel body 1, the displacement of the limit strip 12 can be further limited to ensure that the limit strip 12 fits tightly against the flexible part 11. When the flexible part 11 is deformed by pressure or tension, the limit strip 12 always keeps close to the flexible part 11. In addition, the limit strip 12 is made of rubber material, which can further absorb the deformation energy of the flexible part 11 and extend the service life of the rubber water stop 2.

[0032] The side end of the flexible part 11 against the limit strip 12 is provided with a first protrusion 16 extending toward the water channel body 1; the inner wall of the water channel body 1 is provided with a first groove 15 along the joint seam 6; the first protrusion 16 fills the first groove 15. The depth of the first groove 15 is deeper than that of the second groove 17.

[0033] A notch groove 20 is provided on the inner wall of the water channel body 1 at the joint seam 6; a support and limiting portion 21 is provided at one end of the flexible portion 11 facing the water channel body 1; the support and limiting portion 21 extends into the notch groove 20 and presses against the end surface of the notch groove 20; the support and limiting portion 21 is located between the first protrusion 16 and the joint seam 6.

[0034] The back surface of the flexible portion 11 is provided with a first protrusion 16 and a second protrusion 18 that maintain a gap. The protrusion height of the second protrusion 18 is higher than that of the first protrusion 16. The first protrusion 16, the second protrusion 18 and the flexible portion 11 are an integrally formed structure. The first protrusion 16 and the second protrusion 18 are continuously arranged along the length direction of the joint 6. Rubber ribs are also arranged on both sides of the first protrusion 16. The rubber ribs make the connection between the first protrusion 16 and the first groove 15 tighter, limit the vertical displacement of the first protrusion 16, and further limit the vertical displacement of the flexible portion 11. Even if there is a drop in the channel body 1 on both sides of the joint 6, the rubber waterstop 2 still has a good waterproof effect.

[0035] Under the multiple barriers of the first groove 15 , the first protrusion 16 , the second groove 17 and the second protrusion 18 , it is difficult for water inside the water channel body 1 to penetrate to the outside through the joint seam 6 , thus having a good waterproof effect.

[0036] An inner support strip 22 is also provided between the flexible portion 11 and the joint seam 6; the inner support strip 22 is supported between the support limit portions 21 on both sides of the flexible portion 11. The length direction of the inner support strip 22 is consistent with the length direction of the joint seam 6, and the inner support strip 22 is also made of rubber. One side wall of the support limit portion 21 is pressed against the side wall of the notch groove 20, and the other side wall is pressed against by the inner support strip 22, so that the support limit portion 21 is fixed, and at the same time, it is closely matched with the notch groove 20 to improve the waterproof performance. In particular, the inner support strip 22 can be supported on the back surface of the flexible portion 11. When the front surface of the flexible portion 11 is subjected to water pressure, the inner support strip 22 provides effective support to prevent the flexible portion 11 from being excessively deformed, thereby increasing the gap between the contact surface and the water channel body 1 and affecting the waterproof effect.

[0037] like Figure 5 , Figure 6 As shown, the connection assembly includes a sleeve 23 and two L-shaped pipes respectively threadedly connected to the two ends of the sleeve 23; the sleeve 23 is located in the notch groove 20; the other ends of the two L-shaped pipes are respectively connected to the main pipes 7 of the two adjacent pipe network units. The L-shaped pipe includes a positioning pipe 24 and a connecting pipe 25; the upper end of the positioning pipe 24 is fixedly connected to the main pipe 7; the inner wall of the water channel body 1 is provided with an L-shaped positioning hole 26; the L-shaped positioning hole 26 includes a vertical hole and a horizontal hole; the lower end of the positioning pipe 24 is inserted into the vertical hole, and the connecting pipe 25 extends into the horizontal hole, one end of the connecting pipe 25 is threadedly connected to the positioning pipe 24, and the other end is threadedly connected to the sleeve 23. The connecting pipe 25 passes through the support limit portion 21; the connecting pipe 25 is provided with a rubber pad 27 and a compression nut 28 clamped on both sides of the support limit portion 21.

[0038] The L-shaped positioning hole 26 is preset on the water channel body 1 in advance, and the main pipeline 7 and the branch pipeline 8 can also be assembled in advance. The positioning pipe 24 can be welded to the bottom of the main pipeline 7 in advance; when assembling the high-pressure jet desilting pipe network 3, the positioning pipe 24 at the bottom of the main pipeline 7 of the pipe network unit of the water channel body 1 is vertically inserted into the vertical hole of the L-shaped positioning hole 26 to complete the positioning of the pipe network unit. Then, the connecting pipe 25 threadedly matched with the positioning pipe 24 is inserted into the horizontal hole of the L-shaped positioning hole 26, and the connecting pipe 25 and the positioning pipe 24 are tightened at the notch groove 20 to complete the assembly of the L-shaped pipeline. In this state, a part of the connecting pipe 25 extends into the notch groove 20. Of course, before the connecting pipe 25 is inserted into the horizontal hole, the compression nut 28 is pre-tightened on the threaded section configured on the connecting pipe 25, and then the rubber pad 27 is placed between the support limiter 21 and the side wall of the notch groove 20. The connecting pipe 25 passes through the support limiter 21 and the rubber pad 27 in sequence and then is inserted into the horizontal hole and threadedly connected with the positioning pipe 24. Then tighten the compression nut 28 to compress the support limiter 21. Finally, the sleeve 23 is used to connect the connecting pipes 25 of the two L-shaped pipes to achieve the connection of the two pipe network units. At the same time, the rubber water stop 2 is also effectively fixed, and the rubber water stop 2 closes the space formed by the splicing of the notch grooves 20 of the two adjacent water channel bodies 1 to prevent water from infiltrating into the space and corroding the connecting components, which is also convenient for later inspection and maintenance.

[0039] Based on the same inventive concept, the present invention also proposes a construction method of the above-mentioned assembled water channel, comprising the following steps: Step 1, prefabricate the U-shaped structure 31 and the channel cover 30 of the channel body 1; Step 2: pre-bury the pipe network unit of the high-pressure jet desilting pipe network 3 at the bottom of the canal body 1 , that is, inside the U-shaped structure 31 ; and install the opening and closing spoiler device on the inside of the canal cover 30 .

[0040] Step 3, hoist multiple U-shaped structures 31 to the target position in sequence, and splice adjacent U-shaped structures 31; hoist a channel cover 30 on the upper end of each U-shaped structure 31, and pour concrete into the casting countersunk holes and casting through holes to complete the connection between the channel cover 30 and the U-shaped structure 31.

[0041] Step 4: Use connecting components to connect adjacent pipe network units; determine the number of connecting components according to the number of water channel bodies 1, and use the connecting components to connect all the pipe network units of the water channel bodies 1 into a whole.

[0042] Step 5: Lay the flexible part 11 of the rubber water stop 2 on the inner side of the joint 6 of the water channel body 1, and make the flexible part 11 cover the connection component, and use the fixing component to fix the flexible part 11 and the water channel body 1. The rubber water stop 2 overlaps the head and tail. The inner wall of the water channel body 1 is coated with a nano-penetrating crystallization waterproof coating to enhance the impermeability of the concrete.

[0043] Step 6: Connect the high-pressure water pump 10 to the connection assembly in the water channel body 1 at the end. When the number of water channel bodies 1 to be spliced ​​is large, the number of high-pressure water pumps 10 can be appropriately increased as needed. For example, one high-pressure water pump 10 is configured for every ten water channel bodies 1. For the connection assembly that needs to be installed with the high-pressure water pump 10, a three-way joint is set on the corresponding connecting pipe 25, and then connected to the high-pressure water pump 10, which is simple and flexible to construct.

[0044] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rubber water stop, characterized in that: The rubber water stop is arranged on the inner side of the joint seam of two spliced ​​water channel bodies; the rubber water stop comprises a curved flexible portion and fixing components arranged on both sides of the flexible portion; the flexible portion covers the joint seam, and the fixing components on both sides thereof are fixedly connected to the water channel bodies on both sides of the joint seam respectively; The fixing assembly includes a limit strip, a pressure strip and a fastener; the limit strip is laid on the inner wall of the channel body and pressed against the side end of the flexible part; a third groove is provided at the end of the flexible part facing away from the channel body; one end of the pressure strip is embedded in the third groove, and the other end is pressed against the upper end of the limit strip; the fastener fastens the limit strip and the channel body, and the fastener also fastens the pressure strip, the limit strip and the channel body, and the fastener also fastens the pressure strip, the flexible part and the channel body.

2. A rubber water stop according to claim 1, characterized in that: A second groove is provided on the end surface of the water channel body that contacts the limit strip, and the limit strip is provided with a second protrusion embedded in the second groove; a first protrusion extending toward the water channel body is provided on the side end of the flexible part that presses against the limit strip; a first groove is provided on the inner wall of the water channel body along the joint; and the first protrusion is filled in the first groove.

3. A prefabricated water channel, characterized in that: It comprises a plurality of channel bodies spliced ​​and assembled along the length direction; a rubber water stop strip is arranged inside the splicing seam of two spliced ​​channel bodies; a high-pressure jet desilting pipe network is arranged at the bottom of the spliced ​​and assembled channel bodies; an openable and closable flow spoiler is arranged inside the channel body; The rubber water stop comprises a curved flexible portion and fixing components arranged on both sides of the flexible portion; the flexible portion covers the joint, and the fixing components on both sides thereof are respectively fixedly connected to the water channel body on both sides of the joint; The high-pressure jet desilting pipe network includes a pipe network unit arranged at the bottom of each of the water channel bodies and a connection assembly connecting adjacent pipe network units; the pipe network unit includes a main pipe, one or more branch pipes connected to the main pipe, and a high-pressure nozzle arranged on the branch pipe; at least one of the connection assemblies is also connected to a high-pressure water pump; The opening and closing spoiler device includes a baffle and a hydraulic rod; one end of the baffle is hinged to the water channel body, and the other end is hinged to one end of the hydraulic rod; the other end of the hydraulic rod is hinged to the water channel body for driving the baffle to open and close.

4. The prefabricated water channel according to claim 3, characterized in that: The inner wall of the water channel body is provided with a notch groove at the joint; the connection assembly includes a sleeve and two L-shaped pipes threadedly connected to the two ends of the sleeve; the sleeve is located in the notch groove; the other ends of the two L-shaped pipes are respectively connected to the main pipes of the two adjacent pipe network units.

5. The prefabricated water channel according to claim 4, characterized in that: The L-shaped pipeline includes a positioning pipe and a connecting pipe; the upper end of the positioning pipe is fixedly connected to the main pipeline; the inner wall of the channel body is provided with an L-shaped positioning hole; the L-shaped positioning hole includes a vertical hole and a horizontal hole; the lower end of the positioning pipe is inserted into the vertical hole, and the connecting pipe extends into the horizontal hole, one end of the connecting pipe is threadedly connected to the positioning pipe, and the other end is threadedly connected to the sleeve.

6. The prefabricated water channel according to claim 5, characterized in that: The fixing assembly includes a limit strip, a pressure strip and a fastener; the limit strip is laid on the inner wall of the channel body and is pressed against the side end of the flexible part; a third groove is provided at one end of the flexible part facing away from the channel body; one end of the pressure strip is embedded in the third groove, and the other end is pressed against the upper end of the limit strip; the fastener fastens the limit strip and the channel body, and the fastener also fastens the pressure strip, the limit strip and the channel body, and the fastener also fastens the pressure strip, the flexible part and the channel body; a second groove is provided on the end surface of the channel body in contact with the limit strip, and the limit strip is provided with a second protrusion embedded in the second groove; a first protrusion extending toward the channel body is provided on the side end of the flexible part pressing against the limit strip; a first groove is provided on the inner wall of the channel body along the splicing seam; the first protrusion fills the first groove.

7. The prefabricated water channel according to claim 6, characterized in that: A support and limit portion is provided at one end of the flexible portion facing the water channel body; the support and limit portion extends into the notch groove and presses against the end surface of the notch groove; the support and limit portion is located between the first protrusion and the joint seam; the connecting pipe passes through the support and limit portion; and the connecting pipe is provided with a rubber pad and a clamping nut clamped on both sides of the support and limit portion.

8. The prefabricated water channel according to claim 3, characterized in that: The water channel body comprises a water channel bottom plate, a water channel cover plate and two water channel side plates; the water channel bottom plate and the two water channel side plates are cast in situ as an integral U-shaped structure; the two ends of the water channel cover plate are respectively placed on the top of the two water channel side plates; the opening and closing spoiler device is arranged on the inner side of the water channel cover plate.

9. The prefabricated water channel according to claim 8, characterized in that: A casting countersunk hole is arranged on the top of the channel side plate, and a casting through hole aligned with the casting countersunk hole is arranged at the position of the channel cover plate erected on the channel side plate; steel bars are anchored in the casting countersunk hole, and the steel bars extend into the casting through hole; the channel body also includes concrete filling the casting countersunk hole and the casting through hole.

10. A construction method for a prefabricated water channel, characterized in that: Applied to the prefabricated assembled water channel of claim 8, the construction method comprises the following steps: Prefabricate the water channel body, which includes a water channel bottom plate, a water channel cover plate and two water channel side plates; the water channel bottom plate and the two water channel side plates are cast in place as an integrated U-shaped structure; The pipe network unit of the high-pressure jet desilting pipe network is pre-buried inside the U-shaped structure; the opening and closing spoiler device is installed inside the channel cover plate; Hoisting a plurality of the U-shaped structures to the target position in sequence, and splicing adjacent U-shaped structures; hoisting a channel cover plate on the upper end of each U-shaped structure, and pouring concrete to complete the connection between the channel cover plate and the U-shaped structure; Connecting the adjacent pipe network units using a connecting assembly; The flexible part of the rubber water stop is laid on the inner side of the joint of the water channel body, and the flexible part covers the connecting component, and the flexible part and the water channel body are fixed by a fixing component; The high-pressure water pump is connected to the connecting assembly located in the water channel body at the end.

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