A relay energy dissipation and diversion device and a construction method for a diversion array of a curved spillway

Abstract

The present invention relates to the technical field of diversion in the bend section of a spillway, and particularly relates to a relay energy dissipation and diversion device and a construction method for a bend-type spillway diversion array. Among them, the construction method for the bend-type spillway diversion array includes Step 1: Measuring the specifications and dimensions of the spillway, and dividing the bend-type spillway into several upstream initial sections, middle bend sections, and downstream sections; Step 2: Determining the distribution of the diversion device in the spillway, arranging the diversion device along the side line direction of the spillway, and making the diversion head of the diversion device face the upstream initial section, the diversion body of the diversion device face the downstream section, and the diversion head of the diversion device deflect outward from the spillway and form an angle of 5-10° with the central axis of the spillway. It can make the discharge flow rate and the transverse distribution of the flow velocity in the bend section, downstream straight section, and stilling basin section of the spillway relatively uniform, eliminate the clockwise and counterclockwise swirling water flows in the stilling basin, and make the flow pattern in the stilling basin better, achieving a good rectification and homogenization effect.

Description

Technical Field

[0001] The present invention relates to the technical field of spillway bend section diversion, and particularly relates to a relay energy dissipation and diversion device and a construction method of a bend type spillway diversion array. Background Art

[0002] For some completed spillways, due to limitations of terrain, topography and site layout, the local or all of the discharge chute section of the spillway project adopts a bend design. Since the radius of the chute bend section is small and the angle is large, the turbulent intensity of the water flow discharged from the spillway during the flood period is high in the steep chute bend section. The main flow is located on the outer bank, the transverse distribution of the water flow is uneven, the water level of the outer bank in the bend section is significantly raised, the flow through the middle and inner banks is less or there is no flow, and the transverse distribution of the inflow into the downstream stilling basin is also uneven, obvious vortices and backflows are generated in the stilling basin, and the flow pattern is poor. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the first object of the present invention is to provide an energy dissipation and diversion device, which has the functions of diversion, rectification and homogenization for a bend type spillway.

[0004] The second object of the present invention is to provide a construction method of a bend type spillway diversion array, which can make the transverse distribution of the discharge flow rate and flow velocity in the spillway bend section, the downstream straight section and the stilling basin section more uniform under various discharge conditions, eliminate the clockwise and counterclockwise swirling water flows in the stilling basin, make the flow pattern in the stilling basin better, and achieve a good rectification and homogenization effect.

[0005] The first object of the present invention is achieved by the following technical solutions:

[0006] An energy dissipation and diversion device, which comprises a diversion main body and a diversion head, and one end of the diversion head is connected to the diversion main body;

[0007] The diversion main body comprises a first side plate and a second side plate arranged oppositely, a first top plate arranged on the first side plate and the second side plate, and a rear cover plate arranged on the side of the first side plate and the second side plate far from the head. The first side plate and the second side plate are vertically arranged;

[0008] The diversion head comprises a first head side plate and a second head side plate arranged vertically, and a second top plate arranged on the first head side plate and the second head side plate. One end of the first head side plate far from the diversion main body and one end of the second head side plate far from the diversion main body are close to each other to form a triangle. The height of the upper edge of the first head side plate gradually increases from the end far from the diversion main body to the end close to the diversion main body until it is equal to the height of the upper edge of the first side plate, and the upper edge of the first head side plate is arc-shaped. The second head side plate is symmetrical with the first head side plate along the central axis of the diversion main body.

[0009] The second object of the present invention is achieved by the following technical solutions:

[0010] A construction method for a diversion array of a curved spillway, which comprises the following steps:

[0011] Step 1: Measure the specifications and dimensions of the spillway, and divide the curved spillway into several upstream initial segments, middle curved segments, and downstream segments;

[0012] Step 2: Determine the distribution of the diversion devices in the spillway. Set the diversion devices described in claim 1 along the side line direction of the spillway, with the diversion head of the diversion device facing the upstream initial segment, the diversion body of the diversion device facing the downstream segment, and the diversion head of the diversion device deflecting towards the outside of the spillway and forming an angle of 5-10° with the central axis of the spillway;

[0013] Step 3: Install and fix the diversion devices in the spillway.

[0014] Among them, in step 2, it includes determining the distribution of the diversion devices in the upstream initial segment. In the upstream initial segment, arrange multiple diversion devices at equal distance intervals from the outside of the spillway to the inside of the spillway. The diversion device located in the middle position is set at the central axis position of the spillway, and the diversion head of the diversion device located in the middle position is at the intersection of the central axis of the spillway and the starting line of the upstream initial segment. The diversion devices close to the inside of the spillway are gradually arranged closer to the downstream segment, and the diversion devices close to the outside of the spillway are gradually arranged farther away from the downstream segment.

[0015] Among them, in step 2, it also includes determining the distribution of the diversion devices in the curved segment. Select five diversion devices. First, set two diversion devices respectively along the direction from close to the upstream initial segment to close to the downstream segment, then set the third diversion device at a position close to the central axis of the spillway, then set the fourth diversion device at the central axis position of the spillway, and finally set the fifth diversion device at a position close to the inside of the spillway.

[0016] Among them, in step 2, it also includes determining the distribution of the diversion devices in the downstream segment. Select five diversion devices. The five diversion devices are divided into two rows, front and back, and the diversion devices are arranged in a cross pattern with two in the front row and three in the back row. The two diversion devices in the front row are symmetrically arranged on both sides of the central line of the spillway, the diversion device in the middle of the back row is arranged on the central line of the spillway, and the remaining two are symmetrically arranged on both sides of the central line of the spillway.

[0017] Among them, step 3 specifically includes the following steps:

[0018] S31: Chisel off the concrete protective layer of the bottom plate at the spillway where the diversion devices are arranged to form a groove for installing the diversion devices;

[0019] S32. Install the diversion device into the groove, weld the diversion head of the diversion device to the steel bars of the spillway floor, drill and implant steel bars at the bottom of the diversion body of the diversion device, and weld the implanted steel bars to the diversion head of the diversion device;

[0020] S33. After the diversion device is fixed in the groove, fill the edge of the groove with modified epoxy resin. After roughening the surface of the old concrete of the spillway floor and rinsing it clean with water, apply cement mortar on the floor surface to increase the bonding force and make the new and old concretes bond well;

[0021] S34. Pour concrete into the diversion body of the diversion device;

[0022] S35. After the concrete in the diversion body reaches the preset strength, remove the diversion body of the diversion device and conduct regular sprinkler curing on the concrete structure.

[0023] Among them, the diversion body of the diversion device is respectively provided with a first pouring hole, a second pouring hole and a third pouring hole at intervals from the direction close to the diversion head to the direction away from the diversion head;

[0024] The S34 specifically includes the following steps:

[0025] In the first pouring stage, close the first pouring hole, open the second pouring hole and the third pouring hole, and pour concrete into the diversion body from the second pouring hole until the concrete reaches the height of the third pouring hole;

[0026] In the second pouring stage, close the third pouring hole, open the first pouring hole and the second pouring hole, and pour concrete into the diversion body from the first pouring hole until the concrete reaches the height of the second pouring hole;

[0027] In the third pouring stage, keep the third pouring hole closed, close the second pouring hole, and pour concrete into the diversion body from the first pouring hole until completion.

[0028] The beneficial effects of the present invention are:

[0029] The present invention has small engineering quantity, low cost, and is relatively convenient for construction. The construction method of the relay type diversion array for the rectification and equalization of the curved spillway has the advantages that under various discharge conditions, the discharge flow rate and the transverse distribution of the flow velocity in the curved section of the spillway, the downstream straight section and the stilling basin section are relatively uniform, the clockwise and counterclockwise swirling flows in the stilling basin are basically eliminated, the flow pattern in the stilling basin is good, and a good rectification and equalization effect is achieved. Brief Description of the Drawings

[0030] The present invention will be further described below in conjunction with the drawings and embodiments.

[0031] Figure 1 It is the overall structural schematic diagram of Embodiment 1 of the present invention;

[0032] Figure 2 is the top view of Embodiment 1 of the present invention;

[0033] Figure 3 is the side view of Embodiment 1 of the present invention;

[0034] Figure 4 is the layout schematic diagram of the diversion device of Embodiment 2 of the present invention in the spillway;

[0035] Figure 5 is the schematic diagram of the groove of Embodiment 2 of the present invention.

[0036] Explanation of reference numerals: 1, diversion main body; 11, first side plate; 12, first top plate; 13, rear cover plate; 14, first side diversion surface; 15, second side diversion surface; 2, diversion head; 21, first head side plate; 22, second top plate; 23, first diversion top surface; 3, watering hole. Detailed implementation manners

[0037] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects 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, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined with each other without conflict.

[0038] Embodiment 1

[0039] An energy dissipation and diversion device, as Figures 1-3 shown, which includes a diversion main body 1 and a diversion head 2, and one end of the diversion head 2 is connected to the diversion main body 1.

[0040] The diversion main body 1 includes a first side plate 11 and a second side plate arranged oppositely, a first top plate 12 arranged on the first side plate 11 and the second side plate, and a rear cover plate 13 arranged on the side of the first side plate 11 and the second side plate far from the head. The first side plate 11 and the second side plate are vertically arranged.

[0041] The diversion head 2 includes a first head side plate 21 and a second head side plate that are vertically arranged, and a second top plate 22 provided on the first head side plate 21 and the second head side plate. One end of the first head side plate 21 far from the diversion main body 1 and one end of the second head side plate far from the diversion main body 1 approach each other to form a triangle. The height of the upper edge of the first head side plate 21 gradually increases from the end far from the diversion main body 1 to the end close to the diversion main body 1 until it is equal to the height of the upper edge of the first side plate 11, and the upper edge of the first head side plate 21 is arc-shaped. The second head side plate is symmetric with the first head side plate 21 along the central axis of the diversion main body 1.

[0042] During use, by installing the diversion device of the present invention on the bend section of the spillway, the functions of energy dissipation, diversion, and rectification and homogenization can be achieved for the bend section of the spillway. It has a certain effect of energy dissipation and air entrainment and erosion reduction on high-speed water flow, making the lateral flow rate and velocity distribution in the bend section relatively uniform.

[0043] The diversion head 2 of the present invention is set as a symmetric triangular prism or a structure with an isosceles triangle cross-section. Both sides along the water flow are vertically arranged, so that after the diversion device is installed in the spillway, both sides of the diversion device are perpendicular to the bottom of the spillway and are basically parallel to the water flow direction. It has a good effect of diverting and guiding high-speed water flow, and during the flood discharge period, it can effectively prevent the diversion head 2 from being blocked by garbage and branches, without affecting the flood discharge function of the spillway.

[0044] Among them, in order to make the diversion head 2 better play the roles of diversion and rectification and make the diversion head 2 less likely to be blocked by branches, the second top plate 22 smoothly transitions from the central axis of the diversion main body 1 to both sides close to the first head side plate 21 and the second head side plate to form a first diversion top surface 23.

[0045] Among them, in order to make the diversion and rectification effect of the structure of the diversion main body 1 part better and reduce the resistance between the diversion main body 1 and the water flow, the diversion main body 1 is provided with a first side diversion surface 14 that extends in an arc from the top of the first side plate 11 to the upper surface of the first top plate 12. The diversion main body 1 is provided with a second side diversion surface 15 that extends in an arc from the top of the second side plate to the upper surface of the first top plate 12. The diversion main body 1 is provided with a rear diversion surface that extends in an arc from the top of the rear cover plate 13 to the upper surface of the first top plate 12.

[0046] Among them, in order to facilitate the fixed installation of the diversion device, the inside of the diversion main body 1 is hollow, and the first top plate 12 of the diversion main body 1 is provided with a plurality of pouring holes 3 for pouring concrete into the inside of the diversion main body 1. During installation, concrete is poured into the pouring holes 3.

[0047] Among them, the plurality of pouring holes 3 are arranged at intervals along the length direction of the diversion main body 1.

[0048] Embodiment 2

[0049] A construction method for a diversion array of a curved spillway is as follows Figure 4 shown, which includes the following steps:

[0050] Step 1: Measure the specifications and dimensions of the spillway, including the width of the spillway, the height of the side walls, the radius and angle of the curved section of the spillway, etc., determine the starting point, ending point and length of the curved section, and divide the curved spillway into several upstream initial sections, middle curved sections and downstream sections. In this embodiment, there are two upstream initial sections, one curved section, and the downstream section is divided into five sections, a total of eight groups;

[0051] Step 2: Determine the distribution of the diversion devices in the spillway. Divide forty diversion devices into eight groups, with five diversion devices in each group. From the starting point of the curved section to the downstream, they are groups 1-8 respectively. Set the diversion devices described in claim 1 along the side line direction of the spillway, and make the diversion head of the diversion device face the upstream initial section, the diversion body of the diversion device face the downstream section, and the diversion head of the diversion device deflect outward from the spillway and form an angle of 5-10° with the central axis of the spillway;

[0052] Determine the distribution of the diversion devices in the upstream initial sections of the first group and the second group. In the upstream initial section, arrange multiple diversion devices at equal intervals from the outside of the spillway to the inside of the spillway. The diversion device located in the middle position is arranged at the central axis position of the spillway, and the diversion head of the diversion device located in the middle position is located at the intersection of the central axis of the spillway and the starting line of the upstream initial section. The diversion devices close to the inside of the spillway are gradually arranged closer to the downstream section, and the diversion devices close to the outside of the spillway are gradually arranged farther away from the downstream section.

[0053] Determine the distribution of the diversion devices in the upstream initial section. In the upstream initial section, arrange multiple diversion devices at equal intervals from the outside of the spillway to the inside of the spillway. The diversion device located in the middle position is arranged at the central axis position of the spillway, and the diversion head of the diversion device located in the middle position is located at the intersection of the central axis of the spillway and the starting line of the upstream initial section. The diversion devices close to the inside of the spillway are gradually arranged closer to the downstream section, and the diversion devices close to the outside of the spillway are gradually arranged farther away from the downstream section.

[0054] Determine the distribution of the diversion devices in the downstream section. Take five diversion devices. The five diversion devices are divided into two rows, front and back, and the diversion devices are arranged crosswise in the arrangement of two in the front row and three in the back row. The two diversion devices in the front row are symmetrically arranged on both sides of the central line of the spillway, the diversion device in the middle of the back row is arranged on the central line of the spillway, and the remaining two are symmetrically arranged on both sides of the central line of the spillway.

[0055] Step 3: Install and fix the diversion devices into the spillway.

[0056] Among them, the specific steps of the said Step 3 include the following steps:

[0057] S31. Chisel off the concrete protective layer of the bottom plate at the spillway where the diversion device is arranged to form a groove for installing the diversion device.

[0058] S32. Install the diversion device into the groove, weld the diversion head of the diversion device to the steel bars of the spillway bottom plate, drill and implant steel bars at the bottom of the diversion main body of the diversion device, and weld the implanted steel bars to the diversion head of the diversion device.

[0059] S33. After the diversion device is fixed in the groove, fill the edge of the groove with modified epoxy resin, chisel the surface of the old concrete of the spillway bottom plate and rinse it with water, then apply cement mortar on the bottom plate surface so that the diversion device is fixed in the groove (as Figure 5 )

[0060] S34. Pour concrete into the diversion main body of the diversion device.

[0061] S35. After the concrete in the diversion main body reaches the preset strength, remove the diversion main body of the diversion device and conduct regular sprinkler curing on the concrete structure.

[0062] Wherein, the diversion main body of the diversion device is respectively provided with a first pouring hole, a second pouring hole and a third pouring hole at intervals from the direction close to the diversion head to the direction away from the diversion head;

[0063] The S34 specifically includes the following steps:

[0064] In the first pouring stage, close the first pouring hole, open the second pouring hole and the third pouring hole, and pour concrete into the diversion main body from the second pouring hole until the concrete reaches the height of the third pouring hole;

[0065] In the second pouring stage, close the third pouring hole, open the first pouring hole and the second pouring hole, and pour concrete into the diversion main body from the first pouring hole until the concrete reaches the height of the second pouring hole;

[0066] In the third pouring stage, keep the third pouring hole closed, close the second pouring hole, and pour concrete into the diversion main body from the first pouring hole until completion.

[0067] The above has specifically described the preferred embodiment of the present invention, but the present invention is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dissipation and diversion device, characterized in that: it includes a diversion main body and a diversion head, and one end of the diversion head is connected to the diversion main body; the diversion main body includes a first side plate and a second side plate arranged oppositely, a first top plate arranged on the first side plate and the second side plate, and a rear cover plate arranged on the side of the first side plate and the second side plate far from the head. The first side plate and the second side plate are vertically arranged. The inside of the diversion main body is hollow. The first top plate of the diversion main body is provided with a plurality of pouring holes for pouring concrete into the inside of the diversion main body. During installation, concrete is poured into the pouring holes; the diversion head includes a first head side plate and a second head side plate arranged vertically and a second top plate arranged on the first head side plate and the second head side plate. One end of the first head side plate far from the diversion main body and one end of the second head side plate far from the diversion main body approach each other to form a triangle. The height of the upper edge of the first head side plate gradually increases from the end far from the diversion main body to the end close to the diversion main body until it is equal to the height of the upper edge of the first side plate, and the upper edge of the first head side plate is arc-shaped. The second head side plate is symmetrical to the first head side plate along the central axis of the diversion main body. The second top plate smoothly transitions from the central axis of the diversion main body to both sides close to the first head side plate and the second head side plate to form a first diversion top surface.

2. A construction method for a curved spillway diversion array, characterized in that: it includes the following steps: Step 1: Measure the specifications and dimensions of the spillway, and divide the curved spillway into several upstream initial segments, middle curved segments, and downstream segments; Step 2: Determine the distribution of the diversion device in the spillway, arrange the diversion device described in claim 1 along the side line direction of the spillway, and make the diversion head of the diversion device face the upstream initial segment, the diversion main body of the diversion device face the downstream segment, and the diversion head of the diversion device deflect outward from the spillway and form an angle of 5-10° with the central axis of the spillway; Step 3: Install and fix the diversion device into the spillway; The specific steps of the third step include the following steps: S31: Chisel off the concrete on the bottom plate of the spillway where the diversion device is arranged to form a groove for installing the diversion device; S32: Install the diversion device into the groove, weld the diversion head of the diversion device to the steel bars on the bottom plate of the spillway, drill and implant steel bars at the bottom of the diversion main body of the diversion device, and weld the implanted steel bars to the diversion head of the diversion device; S33: After the diversion device is fixed in the groove, fill the edge of the groove with modified epoxy resin, chisel the surface of the old concrete on the bottom plate of the spillway and wash it with water, and then apply cement mortar on the bottom plate surface to fix the diversion device in the groove; S34: Pour concrete into the diversion main body of the diversion device; S35: After the concrete in the diversion main body reaches the preset strength, remove the diversion main body of the diversion device and perform regular sprinkler curing on the concrete structure.

3. According to a construction method for a curved spillway diversion array described in claim 2, characterized in that: In the second step, it includes determining the distribution of the diversion devices within the initial upstream section. Within the initial upstream section, a plurality of diversion devices are arranged at equal intervals from the outside of the spillway to the inside of the spillway. The diversion device located at the middle position is arranged at the central axis position of the spillway, and the diversion head of the diversion device located at the middle position is at the intersection of the central axis of the spillway and the starting line of the initial upstream section. The diversion devices close to the inside of the spillway are gradually arranged closer to the downstream section, and the diversion devices close to the outside of the spillway are gradually arranged farther away from the downstream section.

4. A construction method of a curved spillway diversion array according to claim 2, characterized in that: In the second step, it also includes determining the distribution of the diversion devices within the curved section. Take five diversion devices. First, set two diversion devices respectively along the direction from close to the initial upstream section to close to the downstream section. Then, place the third diversion device at a position close to the central axis of the spillway. Next, place the fourth diversion device at the central axis position of the spillway. Finally, place the fifth diversion device at a position close to the inside of the spillway.

5. A construction method of a curved spillway diversion array according to claim 2, characterized in that: In the second step, it also includes determining the distribution of the diversion devices within the downstream section. Take five diversion devices. The five diversion devices are divided into two rows, front and back, and the diversion devices are arranged in a cross pattern with two in the front row and three in the back row. The two diversion devices in the front row are symmetrically arranged on both sides of the central line of the spillway. The diversion device in the middle of the back row is arranged on the central line of the spillway, and the remaining two are symmetrically arranged on both sides of the central line of the spillway.

6. A construction method of a curved spillway diversion array according to claim 2, characterized in that: One pouring hole, two pouring holes and three pouring holes are respectively arranged at intervals on the diversion body of the diversion device from the direction close to the diversion head to the direction away from the diversion head; The specific steps of S34 include the following: In the first pouring stage, close the one pouring hole, open the two pouring holes and three pouring holes, and pour concrete into the diversion body from the two pouring holes until the concrete reaches the height of the three pouring holes; In the second pouring stage, close the three pouring holes, open the one pouring hole and two pouring holes, and pour concrete into the diversion body from the one pouring hole until the concrete reaches the height of the two pouring holes; In the third pouring stage, keep the three pouring holes closed, close the two pouring holes, and pour concrete into the diversion body from the one pouring hole until completion.

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