Dam inlet plugging structure and plugging method based on gradually varying flow rate under high water head

Abstract

This invention relates to a dam pre-blocking structure and sealing method based on gradually varying flow rates at high water head breaches, belonging to the field of flood control equipment technology. It includes: two positioning columns, multiple support bases, a locking rod, an auxiliary filling assembly, and multiple connectors. Each positioning column has a rotatable positioning end and a support end; the multiple support bases can be spliced ​​and fixed together, with the support bases located between the two positioning columns; the locking rod is slidably disposed within a locking groove; the auxiliary filling assembly is installed between the two positioning columns and has multiple filling boxes, each equipped with an intercepting net and a feeding port; the connectors link the filling boxes together along a second and a third preset direction. This invention solves the technical problem of existing technologies where the process of fixing and assembling the device for sealing requires first installing positioning anchor structures on both sides of the breach before fixing the device and sealing the dam, a process that is overly complex and not conducive to rapid sealing.

Description

Technical Field

[0001] This invention belongs to the field of flood control equipment technology, and specifically relates to a dam front plugging structure and sealing method based on gradually varying flow rate at high water head breaches. Background Technology

[0002] A dam breach is a sudden event, and the breach will grow larger and larger with the impact of the water flow. In common dam sealing work, there are many steps, and different sealing methods need to be used for different water areas.

[0003] Patent CN119434184A discloses a rapid sealing device and method for dam bursts, comprising several interconnected frames; each frame has an upper chord, a lower chord, a vertical rod, and a diagonal rod on one side, the vertical rod connecting the two ends of the upper and lower chords to form a frame structure, the diagonal rod being inclinedly connected within the frame structure, the four sides being welded perpendicularly to each other to form a cuboid structure, the four sides being welded with wire mesh, the ends of the upper and lower chords being welded with male and female connectors for horizontal connection, and the top and bottom of the upper and lower chords being provided with screw holes for vertical connection.

[0004] The existing technology represented by the aforementioned documents has at least the following problems during use:

[0005] The process of fixing and assembling the device for sealing requires first installing anchor structures on both sides of the breach, then fixing the device and sealing the dam. The whole process is too complicated and not conducive to rapid sealing. Summary of the Invention

[0006] This invention provides a dam front-plugging structure and sealing method based on gradually varying flow rate at high water head breaches. It addresses the technical problem that existing technologies require the installation of anchor columns on both sides of the breach before fixing the device and sealing the dam, which is too complex and not conducive to rapid sealing.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] A dam pre-blocking structure based on a gradually varying flow rate during a high-head breach includes: two positioning columns, multiple support bases, a locking rod, an auxiliary filling assembly, and multiple connectors. Each positioning column has a positioning end and a support end, with the support end rotatably positioned relative to the positioning end. The multiple support bases can be spliced ​​and fixed together, with each support base located between the two positioning columns and its two ends fixedly mounted on the positioning end. The support bases are distributed along a first preset direction parallel to the water flow direction. Locking grooves are provided on the support end and the positioning end, and the locking rod is slidably disposed within the locking grooves. The auxiliary filling assembly is installed between the two positioning columns and has multiple filling boxes. Each filling box is surrounded by an intercepting net, and feeding ports are provided on its upper and lower end faces. Multiple connectors are distributed around the filling boxes, connecting the filling boxes together along a second and a third preset direction.

[0009] Furthermore, the upper surface of the support base is curved, the lower surface of the support base is flat, and multiple guide grooves are formed on the curved surface of the support base.

[0010] Furthermore, the locking rod slides through the locking grooves of the positioning end and the support end. When the locking rod is simultaneously located in the positioning end and the support end, the positioning end and the support end are locked together. When the locking rod slides out of the positioning end and is only located in the locking groove of the support end, the positioning end and the support end are unlocked, and the support end rotates relative to the positioning end.

[0011] Furthermore, the stuffing boxes are connected to each other along the second preset direction and the third preset direction to form an interception surface.

[0012] Furthermore, the stuffing box forms multiple stuffing channels along the third preset direction.

[0013] A sealing method based on a front plug structure includes the following steps:

[0014] Step S1, Calculation stage: make a preliminary estimate of the width and depth of the ulcer;

[0015] Step S2, Support Base Assembly Stage: Based on the data of the rupture, the support base is spliced ​​along the second preset direction to correspond to the width of the rupture.

[0016] Step S3, Positioning Column Assembly Stage: Install the positioning end on both sides of the assembled support base, install the support end on the positioning end, and pass the locking rod through the locking groove of the positioning end and the support end;

[0017] Step S4, Auxiliary packing assembly stage: Arrange multiple packing boxes along the second preset direction and the third preset direction according to the breach data to form multiple corresponding packing channels, and install them between the two positioning columns.

[0018] Step S5, Deployment Stage: Use a hoisting device to deploy the assembled device as a whole.

[0019] Step S6, the sealing stage: The assembled device is deployed using a hoisting device. The locking rod is slid and the support rod is rotated to press the filling channel against the dam surface. Filling is then delivered through multiple feeding channels to seal the breach.

[0020] This invention provides a dam front plugging structure and sealing method based on gradually varying flow rate during high water head breaches, with the following advantages:

[0021] The system can be quickly assembled according to the size of the breach by pre-setting, and the positioning columns are used for positioning and to assist in the sinking of the support base. The filling box arranged between the two positioning columns forms a filling matrix, which is reinforced by multiple connectors. The filling matrix is ​​fitted to the dam body by rotating the support end to prevent secondary damage to the dam body by the filling structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the dam front plugging structure and sealing method based on gradually varying flow rate under high water head provided in an embodiment of the present invention;

[0024] Figure 2 The exploded view of the dam front plugging structure and sealing method based on the gradually varying flow rate under high water head provided in the embodiments of the present invention, excluding the support frame.

[0025] In the diagram: 10-positioning column; 11-positioning end; 12-support end; 20-support base; 30-locking rod; 41-filling box; 42-interception net; 43-connector; 44-filling channel. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example:

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a dam front plugging structure based on a gradually varying flow rate at a breach under high water head, comprising: two positioning columns 10, multiple support bases 20, locking rods 30, auxiliary filling material assembly, and multiple connectors 43.

[0032] Each of the two positioning columns 10 has a positioning end 11 and a support end 12. The support end 12 is connected by a rotary structure, such as using a bearing device that can withstand large torque, to achieve simple rotation relative to the positioning end 11. Under different dam terrain and water flow conditions, the angle of the support end 12 can be adjusted to better fit the dam surface and enhance the stability of the structure. In addition, the bottom of the positioning column 10 is provided with a conical surface for quick positioning.

[0033] Furthermore, such as Figure 1 and Figure 2As shown, multiple support bases 20 are precisely connected by a structural splicing method, specifically including mortise and tenon joints or slotted joints with locking bolts, to achieve mutual splicing and fixation. Each support base 20 is positioned between two positioning columns 10, and its two ends are securely installed on the positioning end 11 by welding or high-strength bolts. The support bases 20 are distributed along a first preset direction parallel to the water flow direction, as shown in the diagram. Figure 1 In the X direction, the pressure difference generated by the water flow over the curved surface and the plane presses down the support base 20. The upper surface of the support base 20 is designed as a curved surface, which is optimized according to the principles of fluid mechanics and adopts a streamlined design. By setting up support base 20 molds with different curvatures through multiple preset fluid models, it is easy to quickly select and assemble them. The lower surface is a plane, which facilitates stable contact with the riverbed or dam foundation. Multiple guide grooves are opened on the curved surface of the support base 20 to increase the contact area with the water flow along the first preset direction.

[0034] Furthermore, such as Figure 1 and Figure 2 As shown, the locking rod 30 slides through the locking grooves of the positioning end 11 and the support end 12. When the locking rod 30 is simultaneously located in the positioning end 11 and the support end 12, the positioning end 11 and the support end 12 are locked together. When the locking rod 30 slides out of the positioning end 11 and is only located in the locking groove of the support end 12, the positioning end 11 and the support end 12 are unlocked, and the support end 12 rotates relative to the positioning end 11.

[0035] Furthermore, such as Figure 1 and Figure 2 As shown, the stuffing boxes 41 are interconnected along the third and second directions by connectors 43. The connectors 43 are hinged chains made of high-strength materials. The second preset direction is the Y direction and the third preset direction is the Z direction. The stuffing boxes 41 are combined into a stuffing matrix with a certain gap. By laying additional intercepting nets 42 on two planes perpendicular to the water flow direction, the overall structural strength is improved. Furthermore, by setting the intercepting nets 42 around the stuffing boxes 41, the water flow is facilitated.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, the stuffing box 41 is opened at the feeding port along the third preset direction. During use, the internal stuffing box quickly forms vertical support and sealing by filling the inside.

[0037] A sealing method based on a front plug structure includes the following steps:

[0038] Step S1, Calculation stage: make a preliminary estimate of the width and depth of the ulcer;

[0039] Before sealing the breach in the dam, surveying equipment, specifically high-precision total stations and underwater sonar detectors, is used to make preliminary estimates of the width and depth of the breach. During the measurement, the total station precisely measures the coordinates of both ends of the breach by setting up multiple control points around the dam, thereby calculating the width of the breach. The underwater sonar detector, by emitting and receiving sound wave signals, detects the water depth at the breach and then calculates the depth of the breach.

[0040] Step S2, during the assembly stage of the support base 20, the support base 20 is spliced ​​along the second preset direction according to the data of the breach to correspond to the width of the breach.

[0041] The curved surface of the support base 20 is selected based on the calculated data and the on-site conditions of the water body, and then the width is assembled.

[0042] Step S3, during the assembly stage of the positioning column 10, the positioning end 11 is installed on both sides of the assembled support base 20, the support end 12 is installed on the positioning end 11, and the locking rod 30 is inserted through the locking groove of the positioning end 11 and the support end 12.

[0043] The positioning end 11 and the two ends of the support base are fixedly connected, and then the support end 12 and the locking rod 30 are turned to ensure the vertical distribution of the positioning column 10.

[0044] Step S4, auxiliary packing assembly stage: Multiple packing boxes 41 are arranged along the second and third preset directions according to the breach data to form multiple corresponding packing channels 44, and installed between two positioning columns 10.

[0045] Install the stuffing box 41 and the connector 43, align the stuffing ports, and set large interception nets 42 on the two interception surfaces of the stuffing box 41.

[0046] Step S5, Deployment Stage: Use a hoisting device to deploy the assembled device as a whole.

[0047] After assembly, the device is placed at the breach using hoisting equipment. The weighted support base 20 and positioning end 11 are used to assist in pressing down, and the device is pressed tightly against the bottom of the water body by the water flow.

[0048] Step S6, the sealing stage: Use a hoisting device to place the assembled device as a whole, slide the locking rod 30, rotate the support rod, and press the filling channel 44 against the dam surface. Fill material is then added through multiple feeding channels to seal the breach.

[0049] By using a pre-set operating rope and sliding the locking rod 30, the support end 12 can rotate relative to the positioning end 11. By rotating the support rod, the filling channel 44 is roughly attached to the surface of the dam. Then, the sealing material is placed along the feeding channel. Since there are gaps between the feeding channels, after the water flow is quickly reduced, the remaining filling material is placed in front of the device for final sealing.

[0050] In summary, when using the dam pre-plugging structure and sealing method based on the gradual flow rate of the breach under high water head, the angle of the device can be flexibly adjusted by rotating the support end 12 and the positioning end 11 to adapt to different dam bodies; the large curved surface and the guide channel increase the downward pressure of the water flow on the device, and the device is submerged in water, improving its stability underwater; the assembled filling box 41 and support base 20 improve the applicable size and facilitate rapid assembly of the equipment, reducing the cumbersome steps of the preliminary preparation; and the direct filling of the filling channel 44 is safe and simple, which is conducive to the rapid water-stopping and sealing of the dam body.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dam front plugging structure based on gradually varying flow rate during high water head breaches, characterized in that, include: Two positioning columns (10) are provided with a positioning end (11) and a support end (12), wherein the support end (12) is rotatably arranged relative to the positioning end (11); Multiple support bases (20) are provided, and the multiple support bases (20) can be spliced ​​and fixed together. The support bases (20) are located between two positioning columns (10), and the two ends of the support bases (20) are fixedly installed on the positioning end (11). The distribution direction of the support bases (20) is distributed along a first preset direction parallel to the water flow direction. The upper surface of the support bases (20) is curved, and the lower surface of the support bases (20) is flat. Multiple guide grooves are provided on the curved surface of the support bases (20). The locking rod (30) has a locking groove on the support end (12) and the positioning end (11). The locking rod (30) is slidably disposed in the locking groove. The locking rod (30) is slidably passed through the locking groove of the positioning end (11) and the support end (12). When the locking rod (30) is simultaneously located in the positioning end (11) and the support end (12), the positioning end (11) and the support end (12) are locked to each other. When the locking rod (30) slides out of the positioning end (11) and is only located in the locking groove of the support end (12), the positioning end (11) and the support end (12) are unlocked, and the support end (12) rotates relative to the positioning end (11). An auxiliary packing assembly is installed between two positioning columns (10). The auxiliary packing assembly has multiple packing boxes (41). An intercepting net (42) is provided around the packing box (41). A feeding port is provided on the upper and lower end faces of the packing box (41). Multiple connectors (43) are distributed around the stuffing box (41), and the connectors (43) connect the stuffing box (41) to each other along the second preset direction and the third preset direction.

2. According to claim 1, the dam front plugging structure based on the gradual flow rate of the breach under high water head, the filling box (41) is connected to each other along the second preset direction and the third preset direction to form an interception surface.

3. The dam front plugging structure based on gradually varying flow rate under high water head according to claim 2, characterized in that, The stuffing box (41) forms multiple stuffing channels (44) along the third preset direction.

4. A sealing method based on a front-plug structure, characterized in that, The dam front plugging structure based on the gradually varying flow rate at high water head breach as described in claim 3 includes the following steps: Step S1, Calculation stage: make a preliminary estimate of the width and depth of the ulcer; Step S2, the support base (20) assembly stage, according to the data of the rupture, the support base (20) is spliced ​​along the second preset direction to correspond to the width of the rupture; Step S3, the positioning column (10) assembly stage: the positioning end (11) is installed on both sides of the assembled support base (20), the support end (12) is installed on the positioning end (11), and the locking rod (30) is passed through the locking groove of the positioning end (11) and the support end (12); Step S4, auxiliary packing assembly stage: multiple packing boxes (41) are arranged along the second preset direction and the third preset direction according to the rupture data to form multiple corresponding packing channels (44), and installed between the two positioning columns (10); Step S5, Deployment Stage: Use a hoisting device to deploy the assembled device as a whole. Step S6, sealing stage: Use a hoisting device to drop the assembled device as a whole, slide the locking rod (30), rotate the support end (12), press the filling channel (44) against the dam surface, and put the filling material into the multiple filling channels (44) to seal the breach.

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