A composite protection system for cofferdams in water conservancy projects

Abstract

The present invention relates to the technical field of water conservancy project construction equipment, and particularly relates to a composite protection system for a cofferdam in a water conservancy project, which includes a base, a protection mechanism, and a cofferdam body. The base is formed by docking a first body and a second body, and a cofferdam area groove for building a cofferdam and carrying out water conservancy project construction is provided on the base. The protection mechanism is directly installed on the base or rotatably adjusted and installed on the base through a rotating mechanism. The protection mechanism mainly includes a protective cover formed by docking a first diversion side plate, a second diversion side plate, and a connecting member. Both the first diversion side plate and the second diversion side plate are arc-shaped plates, and the protective cover has a structure in which the horizontal cross-section gradually decreases from bottom to top. The first end of the protective cover faces the direction of the oncoming water flow, and a diversion component force structure is provided outside the protective cover. The diversion component force structure includes a diversion component force plate, and a component force inclined surface is provided on the upper plate surface of the diversion component force plate, and the component force inclined surface faces the direction of the oncoming water flow.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy project construction equipment, and particularly relates to a composite protection system for a cofferdam in a water conservancy project. Background Art

[0002] A cofferdam is a temporary water retaining structure in a water conservancy diversion project, used to enclose a construction foundation pit to ensure that water conservancy project buildings can be constructed on dry land. When conducting water conservancy project construction in a river, due to the continuous flow of river water, which drives the movement of sediment and stones in the water, the cofferdam will be impacted, resulting in cracks or even collapse of the cofferdam. In water conservancy construction in large rivers, lakes or even the sea, at different water depths, not only will the water pressure change greatly, but the water flow direction will also change due to different reasons, resulting in a large difference in the pressure received by each part of the cofferdam. Especially in the deep part and in the direction facing the oncoming water flow, it not only receives the maximum impact of the water flow but also has to cope with the impact of sand and stones.

[0003] Currently, there are many cofferdam protection solutions in the prior art. Only a small part of them consider the factor of water depth and give corresponding solutions. Most of them do not consider the impact of water flow direction changes on the protection system and the cofferdam. The Chinese patent with the application number 202120146197.5 provides a cofferdam protection solution that can cope with the impact of water flow and sand and stones. However, this solution does not consider the impact of water pressure changes caused by water depth changes on the equipment and the cofferdam, nor does it consider the impact of water flow impact on the installation stability of the protection equipment. At the same time, it does not consider the impact of water flow direction changes on the equipment effect, and has certain limitations. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a composite protection system for a cofferdam in a water conservancy project. The protection mechanism in the system adopts a unique structure, which can cooperate with the impact force of water flow and sand and stones, and is suitable for providing better protection for the cofferdam at different water depths and different water flow directions. In some embodiments, the orientation of the protection mechanism can be adjusted according to the water flow direction to ensure that the protection mechanism can exert the best protection effect.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a composite protection system for a cofferdam in a water conservancy project, including

[0006] a base, the base includes a first seat body and a second seat body. A plurality of anchor rods are vertically provided on both the first seat body and the second seat body. Docking ports are also provided on the first seat body and the second seat body. The first seat body and the second seat body are docked to form the base, and the two docking ports are docked to form a cofferdam area groove;

[0007] A protective mechanism, the protective mechanism is arranged on the base, and the protective mechanism includes a first diversion side plate, a second diversion side plate and a connecting piece. Two end parts of the first diversion side plate are respectively connected with two end parts of the second diversion side plate through the connecting piece, and the first diversion side plate and the second diversion side plate are butted to form a cylindrical diversion cover; both the first diversion side plate and the second diversion side plate are arc-shaped plates, and the horizontal cross-section of the diversion cover gradually decreases from bottom to top. The diversion cover has a first end and a second end, and the two connecting pieces are respectively located at the first end and the second end of the diversion cover. The first end is the end of the diversion cover facing the oncoming water flow direction; diversion force dividing structures are arranged on both the first diversion side plate and the second diversion side plate. The diversion force dividing structure includes a diversion force dividing plate, and a force dividing inclined surface is arranged on the upper plate surface of the diversion force dividing plate, and the force dividing inclined surface faces the oncoming water flow direction.

[0008] A cofferdam body, the cofferdam body is arranged in the cofferdam area groove and is located between the first diversion side plate and the second diversion side plate. The protective cover has a first end and a second end. The first end is adapted to face the oncoming water flow direction to disperse the impact of water flow and sand and gravel. The protective cover adopts a structure that gradually becomes smaller from bottom to top to cope with the pressure of water on the protective cover and the cofferdam at different depths. The diversion force dividing mechanism is used to disperse the impact of water flow, guide the water flow and sand and gravel to disperse to both sides of the protective cover, and can disperse the impact of water flow, so that the water flow can provide a downward component force for the protection system and improve the stability of the protection system.

[0009] As a further solution, the connecting piece includes a connecting block and a top plate. Two T-shaped grooves are opened in the connecting block. The two T-shaped grooves are symmetrically arranged and the two T-shaped grooves are respectively communicated with two opposite side surfaces of the connecting block. Top plates are arranged in both of the two T-shaped grooves, and the top plate is connected with the bottom of the T-shaped groove through a plurality of springs;

[0010] Clamping plates are vertically fixed at two end parts of the first diversion side plate and two end parts of the second diversion side plate, and the clamping plates are correspondingly matched with the T-shaped grooves. Two end parts of the first diversion side plate and two end parts of the second diversion side plate are connected through the connecting piece, and the structure of the connecting piece is convenient for realizing the disassembly and assembly combination of the first diversion side plate and the second diversion side plate.

[0011] As a further solution, the connecting piece further includes a sealing block. The two sealing blocks are respectively symmetrically arranged on both sides of the connecting block, and the notch of the T-shaped groove is located between the two sealing blocks.

[0012] The sealing block is in the shape of a triangular prism. One side surface of the sealing block is a butting surface, and a connecting groove suitable for the connecting block to be embedded is opened on the butting surface. Both sides of the connecting groove on the butting surface are inclined surfaces inclined towards the side where the connecting groove is located. The function of the sealing block is to make the connection part between the first diversion side plate and the second diversion side plate have a certain sealing and waterproof effect.

[0013] As a further solution, through holes are provided in both the first body and the second body, and the through holes of the first body correspond to those of the second body. The base further includes a connecting rod that passes through the through holes of the first body and the second body. After the first body and the second body are docked to form a body, they are strengthened by the connecting rod to prevent misalignment between the two parts of the base.

[0014] As a further solution, a rotating mechanism is further included. The rotating mechanism is installed on the base, and the protective mechanism is installed on the base through the rotating mechanism. The orientation of the first end of the protective cover can be adjusted through the rotating mechanism to cope with changes in the water flow direction.

[0015] As a further solution, the rotating mechanism includes a rotating seat and a rotating power member. A cofferdam relief groove is provided on the rotating seat. The rotating seat is rotatably installed on the base through a rotary member and is driven to rotate by the rotating power member. The cofferdam relief groove is aligned with the cofferdam area groove, and both the first diversion side plate and the second diversion side plate are installed on the rotating seat. By driving the rotating seat to rotate through the rotating power member, the orientation of the first end of the protective cover can be adjusted.

[0016] As a further solution, both between the first diversion side plate and the rotating seat and between the second diversion side plate and the rotating seat are connected by a plurality of elastic support rods. The elastic support rod includes an upper support rod, a lower support rod, and a spring. A connection hole is provided in the upper support rod, and the connection hole penetrates the bottom end of the upper support rod. The top of the lower support rod penetrates into the connection hole and is connected to the upper support rod through the spring. The elastic support rod is used to improve the installation stability of the first diversion side plate and the second diversion side plate.

[0017] As a further solution, reinforcing frames are fixedly provided on both the first diversion side plate and the second diversion side plate. The reinforcing frames are used to improve the strength of the first diversion side plate and the second diversion side plate.

[0018] As a further solution, plug-in plates are provided at the lower parts of both the first diversion side plate and the second diversion side plate. Plug holes are provided on the plug-in plates. Plug-in grooves are provided on the rotating seat, and through rod holes are provided on the sides of the rotating seat. The through rod holes are communicated with the plug-in grooves and clamping rods are inserted into the through rod holes. The plug-in plates of the first diversion side plate and the second diversion side plate are both inserted into the plug-in grooves on the rotating seat, and the clamping rods pass through the plug holes on the corresponding plug-in plates.

[0019] As a further solution, the clamping rod is a threaded rod, and the through rod hole is a threaded hole adapted to the clamping rod.

[0020] Beneficial effects: 1. Due to the self-structures of the first diversion side plate and the second diversion side plate and the way they are butted against each other, the diversion cover is in a cylindrical structure with a gradually decreasing horizontal cross-section from bottom to top. Such a structure enables the diversion cover to cope with different water pressure conditions at different water depths. The diversion cover has a first end and a second end. The first end of the diversion cover is relatively pointed, making the cross-section of the diversion cover in a water droplet shape. Such a structure enables the first end to cope with the impact of water flow and also facilitates the dispersion of the impact of water flow and sand and gravel; 2. The diversion force distribution structures on both sides of the surface of the protective cover can not only guide the dispersed water flow and sand and gravel, but also disperse part of the acting force generated by the water flow downward. The component force of the water flow plays a role in pressing the diversion cover towards the base, thereby playing a role in stabilizing the protection system; 3. The protective cover of the protection mechanism is mainly composed of the first diversion side plate and the second diversion side plate. The protection mechanism can be driven by a rotating mechanism to rotate, so as to adjust the orientation in time according to the water flow direction, thereby providing stable protection for the cofferdam body. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic side structure view of the protection system of the present application;

[0023] Figure 2 It is a schematic sectional structure view of the protection system of the present application;

[0024] Figure 3 It is a schematic top view structure view of the protection system of the present application;

[0025] Figure 4 It is a schematic bottom view structure view of the base;

[0026] Figure 5 It is a schematic top view of the actual use state of the protection mechanism;

[0027] Figure 6 It is a schematic structure view of the first diversion side plate;

[0028] Figure 7 It is a schematic structure view of the connecting piece;

[0029] Figure 8 It is a schematic structure view of the elastic support rod;

[0030] In the figure: 1. Base, 11. First seat body, 12. Second seat body, 13. Cofferdam area groove, 14. Anchor rod,

[0031] 21. Rotating base

[0032] 3. Protection mechanism, 31. First diversion side plate, 32. Second diversion side plate, 33. Connector, 34. Diversion force dividing plate, 35. Elastic support rod, 36. Insertion plate, 37. Insertion hole, 38. First end, 39. Second end, 331. Connection block, 332. Top plate, 333. Sealing block

[0033] 4. Cofferdam body Specific implementation manner

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] A composite protection system for a cofferdam in a water conservancy project includes a base 1, a protection mechanism 3, and a cofferdam body 4. The base 1 is fixedly arranged through the underwater soil in the construction water area of the water conservancy project. The protection mechanism 3 is installed on the base. The cofferdam body 4 is arranged in the soil in the construction water area of the water conservancy project, and the cofferdam body 4 is surrounded and protected by the protection mechanism 3.

[0037] Please refer to Figure 4 , the base 1 includes a first base body 11 and a second base body 12. A plurality of anchor rods 14 are vertically arranged on both the first base body 11 and the second base body 12. The anchor rods 14 can be inserted into the underwater soil, so that the first base body 11 and the second base body 12 can be fixed to the surrounding waters of the construction area of the water conservancy project. The first base body 11 and the second base body 12 can be combined to form the base 1. Under the action of a plurality of anchor rods 14, the base 1 can be fixed on the bottom of the construction area of the water conservancy project, so that the base 1 can be used as an installation base for the protection mechanism 3. Docking ports are opened on both the first base body 11 and the second base body 12. When the first base body 11 and the second base body 12 are docked to form the base 1, the docking port of the first base body 11 is docked with the docking port of the second base body 12, and the two docking ports are docked to form a cofferdam area groove 13. The cofferdam area groove 13 is an area reserved on the base 1 for installing the cofferdam body 4 and for construction in the internal area of the cofferdam body 4.

[0038] In order to avoid the situation where there is a height difference between the first base body 11 and the second base body 12 due to different load-bearing capacities or different bottom ground conditions, in some embodiments, through holes are provided in both the first base body 11 and the second base body 12. The through hole of the first base body 11 penetrates the end face of the first base body 11 close to the second base body 12 and the end face of the first base body 11 far from the second base body 12. The through hole of the second base body 12 penetrates the end face of the second base body 12 close to the first base body 11 and the end face of the second base body 12 far from the first base body 11. The through hole of the first base body 11 corresponds to the through hole of the second base body 12. The base 1 further includes a connecting rod, and the connecting rod passes through the through hole of the first base body 11 and the through hole of the second base body 12. When one of the first base body 11 and the second base body 12 sinks, under the action of the connecting rod, the adjacent other base body plays a supporting role, and at the same time, the upper surface of the base 1 is maintained in a flat state. As a preferred embodiment, there are at least two through holes on the first base body 11 and at least two through holes on the second base body 12. The multiple through holes on the first base body 11 respectively correspond to the multiple through holes on the second base body 12, and there are at least two connecting rods.

[0039] Please refer to Figure 3 and Figure 5 , the protection mechanism 3 is installed on the base 1. The protection mechanism 3 includes a first diversion side plate 31, a second diversion side plate 32 and a connecting member 33. One end of the first diversion side plate 31 is connected to one end of the second diversion side plate 32 through the connecting member 33, and the other end of the first diversion side plate 31 is connected to the other end of the second diversion side plate 32 through the connecting member 33. The first diversion side plate 31 and the second diversion side plate 32 are butted to form a cylindrical diversion cover. Both the first diversion side plate 31 and the second diversion side plate 32 are arc-shaped plates. The structure of the first diversion side plate 31 is as Figure 6 shown, the second diversion side plate 32 is mirror-symmetrically distributed with the first diversion side plate 31. The horizontal cross-section of the diversion cover is in the shape of a water droplet, and the horizontal cross-section of the diversion cover gradually decreases from bottom to top. The diversion cover has a first end 38 and a second end 39. The first end 38 and the second end 39 are respectively the two tips of the water droplet-shaped cross-section of the diversion cover. Among them, the first end 38 is a relatively sharp tip. The first end 38 is the end where one end of the first diversion side plate 31 is connected to one end of the second diversion side plate 32 through the connecting member 33, and the second end 39 is the end where the other end of the first diversion side plate 31 is connected to the other end of the second diversion side plate 32 through the connecting member 33. Please refer to Figure 5 , Figure 5The arrow in the figure indicates the flow direction of water flow, sand and gravel, etc. One end of the fairing located above the fairing in the figure is the first end 38 of the fairing, and one end of the fairing located below the fairing in the figure is the second end 39 of the fairing. Compared with the second end 39, the first end 38 is sharper. When in actual use, the first end 38 of the fairing faces the incoming direction of water flow, sand and gravel. The parts of the first diversion side plate 31 and the second diversion side plate 32 close to the first end 38 should withstand the impact of water flow, sand and gravel, and the first diversion side plate 31 and the second diversion side plate 32 disperse water flow, sand and gravel, etc. to both sides of the fairing.

[0040] The first diversion side plate 31 and the second diversion side plate 32 are both provided with diversion force dividing structures. Please refer to Figure 1 、 Figure 3 、 Figure 5 and Figure 6 The functions of the diversion force dividing mechanism are two. One is to cooperate with the first diversion side plate 31 or the second diversion side plate 32 where it is located to guide water flow, sand and gravel to avoid the fairing and disperse and move from the first end 38 to the second end 39 direction. The other is to use the impact of water flow to make the fairing receive a downward component force, improving the installation stability of the fairing. Specifically, as Figure 6 shown, the diversion force dividing mechanism includes a diversion force dividing plate 34. The diversion force dividing plate 34 is one or at least two. The diversion force dividing plate 34 is provided with a force dividing inclined surface. The force dividing inclined surface faces the incoming direction of water flow. From the first end 38 to the second end 39 of the fairing, the upper plate surface of the diversion force dividing plate 34 continuously rises. The inclined upper plate surface of the diversion force dividing plate 34 is the so-called force dividing inclined surface. Please combine Figure 5 When water flow, sand and gravel impact the first end 38 of the protective cover, the water flow, sand and gravel are dispersed to one side of the first diversion side plate 31 and one side of the second diversion side plate 32 by the first end 38. When the dispersed water flow, sand and gravel, etc. impact the diversion force dividing plate 34, the diversion force dividing plate 34 guides the water flow, sand and gravel to rise. At the same time, the downward component force generated by the impact of the diversion force dividing plate 34 will press down the fairing, pressing the fairing against the base 1 below, thereby improving the overall stability of the protection system of the present application.

[0041] The structure of the connecting member 33 is as Figure 7As shown, the connecting member 33 includes a connecting block 331 and a top plate 332. The connecting block 331 is a long bar-shaped structure. Two T-shaped grooves are formed inside the connecting block 331. Both T-shaped grooves extend along the length direction of the connecting block 331. The two T-shaped grooves are symmetrically distributed. The two T-shaped grooves communicate with two opposite side surfaces of the connecting block 331 respectively. A top plate 332 is provided in each of the two T-shaped grooves. The top plate 332 is a long strip-shaped plate. The top plate 332 is arranged along the length direction of the T-shaped groove. The top plate 332 and the bottom of the T-shaped groove where it is located are connected by a plurality of springs. The plurality of springs push the top plate 332 towards the notch direction of the T-shaped groove. Clamping plates are perpendicularly and fixedly provided at both ends of the first flow guiding plate and both ends of the second flow guiding plate. The clamping plate is a long strip-shaped plate. The clamping plate is used to cooperate with the T-shaped groove to connect the first flow guiding side plate 31 or the second flow guiding side plate 32 with the connecting member 33. The specific connection method between the first flow guiding side plate 31 and the second flow guiding side plate 32 and the connecting member 33 is that the clamping plate at one end of the first flow guiding side plate 31 penetrates into the T-shaped groove, and the clamping plate at one end of the second flow guiding side plate 32 penetrates into the T-shaped groove. Under the action of the spring in the T-shaped groove, the top plate 332 presses the clamping plate, achieving the effect of preventing the clamping plate from detaching from the T-shaped groove.

[0042] The connecting member 33 further includes sealing blocks 333. There are two sealing blocks 333, which are symmetrically distributed on both sides of the connecting block 331. The two sealing blocks 333 and the notches of the two T-shaped grooves are respectively located on the four sides of the connecting block 331. The sealing block 333 is a triangular prism shape. One side surface of the sealing block 333 is a butting surface. Preferably, the sealing block 333 is a triangular prism with an isosceles triangle cross-section, and the surface where the bottom edge of the cross-section is located is the butting surface of the sealing block 333. A connecting groove is formed on the butting surface. The connecting groove is a long groove extending along the length direction of the sealing block 333. The connecting groove is suitable for partial embedding of the connecting block 331. Both side surfaces of the butting surface located on both sides of the connecting groove are inclined surfaces inclined towards the side where the connecting groove is located. The purpose of such a design is that when the two sealing blocks 333 are installed facing each other, the two side ends of the butting surface of one sealing block 333 are respectively close to the two side ends of the butting surface of the other sealing block 333. When the first flow guiding side plate 31 or the second flow guiding side plate 32 is connected to the connecting block 331, the corresponding side ends of the two sealing blocks 333 press on the two plate surfaces of the first flow guiding side plate 31 or the second flow guiding side plate 32, achieving the effect of sealing and waterproofing. The sealing block 333 is preferably made of an elastic material such as rubber or polyurethane.

[0043] In some embodiments, the water conservancy project cofferdam composite protection system of the present application further includes a pumping and pressure regulating mechanism. The pumping and pressure regulating mechanism includes a water pump and necessary water pipes. The water pump is used to pump out the water located inside the protective cover and outside the cofferdam. The pumping and pressure regulating mechanism can adjust the pressure difference between the inside and outside of the protective cover, so that the water outside the protective cover has an extrusion effect on the protective cover.

[0044] The cofferdam body 4 is constructed based on the soil at the bottom of the water. The cofferdam body 4 passes through the cofferdam area groove 13 of the base 1. Water conservancy engineering construction work is carried out inside the cofferdam body 4.

[0045] Example 2

[0046] See also Figures 1 - 8 On the basis of Example 1, a composite protection system for a water conservancy project cofferdam also includes a rotating mechanism, which is installed on the base 1, and the protection mechanism 3 is installed on the rotating mechanism. The protection mechanism 3 is installed on the base 1 through the rotating mechanism. The rotating mechanism can drive the protection mechanism 3 to rotate, and adjust the direction of the protection mechanism 3 according to the direction of the water flow to cope with the impact of the water flow and sand and stones in the water.

[0047] The rotating mechanism includes a rotating seat 21 and a rotating power part. The rotating seat 21 is rotatably installed on the base 1 through a rotating part. The rotating part includes a slewing bearing and a connecting seat. When the rotating seat 21 is installed on the base 1, the connecting seat is connected to both the first seat body 11 and the second seat body 12. A cofferdam clearance groove is opened on the rotating seat 21. In the vertical direction, the cofferdam clearance groove and the cofferdam area groove 13 are opposite, and the function is similar to the cofferdam area groove 13. The cofferdam clearance groove is an area reserved on the rotating seat 21 for installing the cofferdam body 4 and for construction in the internal area of ​​the cofferdam body 4. In order to improve the installation strength of the rotating seat 21, a plurality of supporting wheels are installed at the bottom of the rotating seat 21. The wheel body of the supporting wheel is in contact with the base 1 or is located above the base 1. After the rotating seat 21 is subjected to the downward pressure, the supporting wheel supports the rotating seat 21; the function of the rotating power part is to drive the rotating seat 21 to rotate, thereby adjusting the front end direction of the protective mechanism 3. Specifically, the slewing bearing is a slewing bearing with teeth on the inner ring or the outer ring, and the rotating power part is a motor or a fuel engine. The rotating power part is installed on the rotating seat 21, and the power output shaft of the rotating power part is connected to the slewing bearing in a transmission manner so as to drive the rotating seat 21 to rotate. A water drain cover is also provided on the rotating seat 21, and the rotating power part is arranged in the waterproof cover.

[0048] In this embodiment, the protection mechanism 3 is installed on the rotating seat 21 , and the rotating mechanism can drive the protection mechanism 3 to rotate so as to adjust the direction of the end of the protection mechanism 3 .

[0049] In some embodiments, in order to improve the structural strength of the deflector, the protection mechanism 3 further includes a plurality of elastic support rods 35. The first deflector side plate 31 and the rotating seat 21 are supported by a plurality of elastic support rods 35. The second deflector side plate 32 and the rotating seat 21 are also supported by a plurality of elastic support rods 35. The elastic support rods 35 are rods whose length can be extended and changed to a certain extent. The structure of the elastic support rods 35 is as follows: Figure 8As shown, the elastic support rod 35 includes an upper support rod, a lower support rod and a spring. A connection hole is formed inside the upper support rod, which penetrates the bottom end of the upper support rod, and the orifice of the connection hole faces downward. This not only can be used to connect the lower support rod, but also can prevent water from accumulating in the connection hole. A lock block is provided at the orifice of the connection hole, and a lock hole is provided inside the lock block, and the lock hole communicates with the connection hole; the spring is arranged inside the connection hole, the lower support rod passes through the lock hole, one end of the lower support rod is located inside the connection hole, and a top block is provided at the end of the lower support rod located inside the connection hole. The top end of the lower support rod abuts against the bottom end of the spring through the top block, and the top block is used to prevent the lower support rod from detaching from the upper support rod. When the elastic support rod 35 is in use, the top end of the upper support rod is connected to the first diversion side plate 31 or the second diversion side plate 32, and the lower support rod is connected to the rotating seat 21.

[0050] As a further embodiment, reinforcing frames are fixedly provided on both the first diversion side plate 31 and the second diversion side plate 32. The reinforcing frames are located on the inner wall of the diversion cover, and the reinforcing frames are of a grid-like structure. The top end of the elastic support rod 35 is connected to the reinforcing frame on the first diversion side plate 31 or the second diversion side plate 32.

[0051] In some embodiments, plug-in plates 36 are provided at the lower parts of both the first diversion side plate 31 and the second diversion side plate 32. There are more than two plug-in plates 36 on both the first diversion side plate 31 and the second diversion side plate 32. Insertion holes 37 are formed on the plate surfaces of the plug-in plates 36. Please refer to Figure 6 the structural schematic diagram of the first diversion side plate shown; a plurality of insertion slots are formed on the rotating seat 21, and the plurality of insertion slots are arranged along the shape of the bottom end surface contour of the diversion cover. Through holes are formed on the side surface of the rotating seat 21 corresponding to the positions of the insertion slots, and the through holes communicate with the corresponding insertion slots. When the first diversion side plate 31, the second diversion side plate 32 are connected to the rotating seat 21, the plug-in plates 36 at the bottom of the first diversion side plate 31 are respectively inserted into the corresponding insertion slots, and the plug-in plates 36 at the bottom of the second diversion side plate 32 are respectively inserted into the corresponding insertion slots. Then, each clamping rod passes through the corresponding through hole and passes through the insertion holes 37 on the plug-in plates 36 in the corresponding insertion slots. In order to prevent the clamping rod from detaching, the clamping rod can be set as a threaded rod, and the through hole is a threaded hole adapted to the clamping rod.

[0052] In this embodiment, the present application further includes a water flow direction detector for use in conjunction. According to the detection of the water flow direction, the orientation of the protection mechanism 3 is adjusted in a timely manner so that the first end 38 of the protective cover faces the direction of the water flow.

[0053] The cofferdam body 4 is built based on the soil at the bottom of the water. The cofferdam body 4 passes through the cofferdam area groove 13 of the base 1 and also passes through the cofferdam relief groove on the rotating seat 21. Hydraulic engineering construction work is carried out inside the cofferdam body 4, and the actions of the rotating mechanism and the protection mechanism 3 do not affect the cofferdam body 4.

[0054] The following is a method for installing and using a composite protection system for a water conservancy project cofferdam according to this embodiment, comprising the following steps:

[0055] Step 1: sequentially fix the first seat body 11 and the second seat body 12 to the soil in the water area of ​​the water conservancy project construction, and connect the first seat body 11 and the second seat body 12 to form the base 1. After leveling, insert the connecting rod into the through hole;

[0056] Step 2: Install the rotating mechanism on the base 1 so that the cofferdam clearance groove is directly opposite to the cofferdam area groove 13, and connect the slewing bearing of the rotating mechanism to the base 1;

[0057] Step 3: sequentially install the first guide side plate 31 and the second guide side plate 32, connect the first guide side plate 31 and the second guide side plate 32 to the rotating seat 21, and then connect one end of the first guide side plate 31 to one end of the second guide side plate 32 through the connecting piece 33, and connect the other end of the first guide side plate 31 to the other end of the second guide side plate 32 through the connecting piece 33;

[0058] Step 4: Pump out the water in the protective cover;

[0059] Step 5: construct the cofferdam body 4, the cofferdam body 4 passes through the cofferdam area groove 13 and the cofferdam clearance groove, and the cofferdam body 4 does not contact the base 1 and the rotating seat 21;

[0060] Step six, carry out water conservancy project construction inside the cofferdam body 4. During the construction process, pay attention to clearing out the accumulated water in the protective cover in time. At the same time, detect the direction of water flow in time during the construction process, and drive the rotating mechanism to adjust the direction of the protective cover according to the direction of water flow, so that the first end 38 of the protective cover faces the direction of water flow.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite protection system for cofferdams in hydraulic engineering, characterized in that: including a base (1), the base (1) includes a first body (11) and a second body (12), a number of anchor rods (14) are vertically provided on both the first body (11) and the second body (12), docking ports are also provided on the first body (11) and the second body (12), the first body (11) and the second body (12) are docked to form the base (1) and the two docking ports are docked to form a cofferdam area groove (13); a protection mechanism (3), the protection mechanism (3) is arranged on the base (1), the protection mechanism (3) includes a first diversion side plate (31), a second diversion side plate (32) and a connecting member (33), two ends of the first diversion side plate (31) are respectively connected to two ends of the second diversion side plate (32) through the connecting member (33), and the first diversion side plate (31) and the second diversion side plate (32) are docked to form a cylindrical diversion cover; both the first diversion side plate (31) and the second diversion side plate (32) are arc-shaped plates, the horizontal cross-section of the diversion cover gradually decreases from bottom to top, the diversion cover has a first end (38) and a second end (39), the two connecting members (33) are respectively located at the first end (38) and the second end (39) of the diversion cover, and the first end (38) is the end of the diversion cover facing the oncoming water flow direction; diversion force dividing structures are provided on both the first diversion side plate (31) and the second diversion side plate (32), the diversion force dividing structure includes a diversion force dividing plate (34), a force dividing inclined surface is provided on the upper plate surface of the diversion force dividing plate (34), and the force dividing inclined surface faces the oncoming water flow direction; a cofferdam body (4), the cofferdam body (4) is arranged in the cofferdam area groove (13) and is located between the first diversion side plate (31) and the second diversion side plate (32); a rotating mechanism, the rotating mechanism is installed on the base (1), and the protection mechanism is installed on the base (1) through the rotating mechanism.

2. The composite protection system for a cofferdam in a water conservancy project according to claim 1, wherein: The connecting member (33) includes a connecting block (331) and a top plate (332), two T-shaped grooves are formed in the connecting block (331), the two T-shaped grooves are symmetrically arranged and the two T-shaped grooves are respectively communicated with two opposite side surfaces of the connecting block (331), top plates (332) are arranged in both of the two T-shaped grooves, and the top plates (332) are connected to the bottom of the T-shaped grooves through a number of springs; Clamping plates are vertically fixed to two ends of the first diversion side plate (31) and two ends of the second diversion side plate (32), and the clamping plates are correspondingly matched with the T-shaped grooves.

3. A composite protection system for a cofferdam in a water conservancy project according to claim 2, characterized in that: The connecting member (33) further includes a sealing block (333), the two sealing blocks (333) are respectively symmetrically arranged on both sides of the connecting block (331), and the openings of the T-shaped grooves are located between the two sealing blocks (333), The sealing block (333) is in the shape of a triangular prism, one side surface of the sealing block (333) is a docking surface, a connecting groove suitable for the connecting block (331) to be embedded is formed on the docking surface, and inclined surfaces inclined towards the side where the connecting groove is located are arranged on both sides of the connecting groove on the docking surface.

4. A composite protection system for a cofferdam in a water conservancy project according to claim 1, characterized in that: Through holes are provided in both the first body (11) and the second body (12), and the through hole of the first body (11) corresponds to the through hole of the second body (12). The base (1) further includes a connecting rod that passes through the through holes of the first body (11) and the second body (12).

5. A composite protection system for a cofferdam in a water conservancy project according to any one of claims 1-4, characterized in that: The rotating mechanism includes a rotating base (21) and a rotating power member. A cofferdam relief groove is provided on the rotating base (21). The rotating base (21) is rotatably mounted on the base (1) through a rotating member and is driven to rotate by the rotating power member. The cofferdam relief groove faces the cofferdam area groove (13). The first diversion side plate (31) and the second diversion side plate (32) are both mounted on the rotating base (21).

6. The composite protection system for a cofferdam in a water conservancy project according to claim 5, characterized in that: The first diversion side plate (31) and the rotating base (21), and the second diversion side plate (32) and the rotating base (21) are both connected by a plurality of elastic support rods (35). The elastic support rod (35) includes an upper support rod, a lower support rod, and a spring. A connection hole is provided in the upper support rod, and the connection hole penetrates the bottom end of the upper support rod. The top of the lower support rod penetrates into the connection hole and is connected to the upper support rod through the spring.

7. A composite protection system for a cofferdam in a water conservancy project according to claim 6, characterized in that: Reinforcing frames are fixedly provided on both the first diversion side plate (31) and the second diversion side plate (32).

8. The composite protection system for a cofferdam in a water conservancy project according to claim 5, wherein: Plug-in plates (36) are provided at the lower parts of the first diversion side plate (31) and the second diversion side plate (32). A plug hole (37) is provided on the plug-in plate (36). A plug-in slot is provided on the rotating base (21). Through rod holes are provided on the side surfaces of the rotating base (21). The through rod holes communicate with the plug-in slot and a clamping rod is inserted in the through rod hole. The plug-in plates (36) of the first diversion side plate (31) and the second diversion side plate (32) are both inserted into the plug-in slot on the rotating base (21), and the clamping rod passes through the plug hole (37) on the corresponding plug-in plate (36).

9. The composite protection system for a cofferdam in a water conservancy project according to claim 8, wherein: The clamping rod is a threaded rod, and the through rod hole is a threaded hole adapted to the clamping rod.

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