Dam front blocking structure and blocking method based on gradient flow of high water head lower breach

Abstract

The invention relates to a dam front blocking structure based on gradient flow of a high water head lower breach and a blocking method, and belongs to the technical field of flood prevention equipment. Comprising two positioning column bodies, a plurality of supporting bases, a locking rod, an auxiliary filler assembly and a plurality of connecting pieces. The two positioning column bodies are provided with positioning ends and supporting ends which rotate relative to each other; the multiple supporting bases can be mutually spliced and fixed, and the supporting bases are located between the two positioning column bodies; the locking rod is arranged in the locking groove in a sliding manner; the auxiliary filler assembly is mounted between the two positioning columns and provided with a plurality of filler boxes, and each filler box is provided with an intercepting net and a feeding port; the filler box structures are mutually connected through the connecting pieces in the second preset direction and the third preset direction. The technical problems that in the prior art, in the device fixing, assembling and plugging process, anchor column structures for positioning need to be installed on the two sides of a breach firstly, then device fixing and dam plugging are conducted, the whole process is too complex, and rapid plugging is not facilitated are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of flood control equipment, and in particular relates to a dam front plugging structure and a plugging method based on a gradual flow of a breach under high water head. Background Art

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

[0003] The patent with announcement number CN119434184A discloses a device and method for rapid plugging after a breach, which includes several interconnected frames; a single side of a single frame includes an upper chord, a lower chord, a vertical rod and an oblique rod, the vertical rod connects the two ends of the upper chord and the lower chord to form a frame structure, the oblique rod is obliquely connected to the frame structure, and the four single sides are welded perpendicularly to each other as side surfaces to form a cubic structure, and wire mesh is welded to the periphery of the four side surfaces, the ends of the upper and lower chords are welded with male and female joints for horizontal connection, and the top and bottom of the upper and lower chords are provided with screw holes for vertical connection.

[0004] In the prior art represented by the above documents, there are at least the following problems during use:

[0005] In the process of fixing and assembling the device for sealing, it is necessary to first install the anchor column structure on both sides of the breach, and then fix the device and seal the dam. The whole process is too complicated and not conducive to rapid sealing. Summary of the invention

[0006] The present invention provides a dam front plugging structure and a plugging method based on a gradual flow rate of a breach under high water head, which is used to solve the technical problem that in the prior art, during the process of fixing and assembling the plugging device, it is necessary to first install and position anchor column structures on both sides of the breach, and then fix the device and plug the dam. The whole process is too complicated and not conducive to rapid plugging.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A dam front plugging structure based on a gradual flow rate of a breach under high water head, comprising: two positioning columns, a plurality of support bases, a locking rod, an auxiliary filling assembly, and a plurality of connectors. Both positioning columns are provided with a positioning end and a support end, and the support end is rotatably arranged relative to the positioning end; a plurality of the support bases can be spliced ​​and fixed to each other, the support base is located between the two positioning columns, and the two ends of the support base are fixedly mounted on the positioning end, and the distribution direction of the support base is 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 arranged in the locking groove; the auxiliary filling assembly is installed between the two positioning columns, the auxiliary filling assembly has a plurality of filling boxes, the four sides of the filling box are provided with interception nets, and the upper and lower end faces of the filling box are provided with feeding ports; a plurality of connectors are distributed around the filling box, and the connectors connect the filling box structures to each other along the second preset direction and the third preset direction.

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

[0010] Furthermore, the locking rod is slidably inserted into the locking grooves of the positioning end and the supporting end. When the locking rod is simultaneously located in the positioning end and the supporting end, the positioning end and the supporting end are locked with each other; when the locking rod slides out of the positioning end and is only located in the locking groove of the supporting end, the positioning end and the supporting end are unlocked, and the supporting 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 a plurality of stuffing channels along the third preset direction.

[0013] A plugging method based on a front plugging structure comprises the following steps:

[0014] Step S1, in the measurement phase, a preliminary estimate of the width and depth of the breach is made;

[0015] Step S2, during the support base assembly phase, the support base is spliced ​​along a second preset direction according to the breach data to correspond to the breach width;

[0016] Step S3, during the positioning column assembly phase, the positioning ends are mounted on both sides of the assembled support base, the support end is mounted on the positioning ends, and the locking rod is passed through the locking grooves of the positioning ends and the support end;

[0017] Step S4, during the auxiliary packing assembly stage, the plurality of packing boxes are arranged along the second preset direction and the third preset direction according to the breach data to form a plurality of corresponding packing channels, and are installed between the two positioning cylinders.

[0018] Step S5: during the delivery phase, the assembled device is delivered as a whole using a lifting device;

[0019] Step S6, the plugging stage, use the lifting device to drop the assembled device as a whole, slide the locking rod, rotate the support rod, make the filling channel close to the surface of the dam body, and drop the filling through the multiple feeding channels to plug the breach.

[0020] The present invention provides a dam front plugging structure and plugging method based on the gradual flow of breach under high water head, and the beneficial effects are as follows:

[0021] Through presetting, it can be quickly spliced ​​according to the breach size, and the positioning and auxiliary support base sinking are carried out through the positioning column. A stuffing matrix is ​​formed by a stuffing box arranged between the two positioning columns, and the structure is strengthened with multiple connecting parts. The stuffing matrix is ​​fitted to the dam body by rotating the support end to prevent secondary damage to the dam body by the stuffing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of a dam front plugging structure and a plugging method based on a breach gradient flow under high water head provided by an embodiment of the present invention;

[0024] Figure 2 An exploded diagram of the dam front plugging structure and plugging method based on the gradual change of breach flow under high head provided in an embodiment of the present invention, excluding the support.

[0025] In the figure: 10 - positioning column; 11 - positioning end; 12 - supporting end; 20 - supporting base; 30 - locking rod; 41 - stuffing box; 42 - intercepting net; 43 - connecting piece; 44 - stuffing channel. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

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

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to 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 breach gradient flow under high head, comprising: two positioning columns 10, a plurality of support bases 20, a locking rod 30, an auxiliary filler assembly, and a plurality of connectors 43.

[0032] The two positioning columns 10 each have a positioning end 11 and a supporting end 12. The supporting end 12 is connected by a rotating structure, such as a bearing device that can withstand a large torque, to achieve simple rotation relative to the positioning end 11. Under different dam terrain and water flow conditions, the angle of the supporting end 12 is adjusted to better fit the dam surface and enhance the stability of the structure. The bottom of the positioning column 10 is provided with a conical surface for rapid positioning.

[0033] Furthermore, if Figure 1 and Figure 2As shown, a plurality of support bases 20 are spliced ​​by precise structures, specifically including mortise and tenon splicing or slot splicing with locking bolts, to achieve mutual splicing and fixing. The support base 20 is arranged between two positioning columns 10, and both ends thereof are firmly mounted on the positioning end 11 by welding or high-strength bolt connection. The support base 20 is distributed along a first preset direction parallel to the water flow direction as shown in FIG. Figure 1 In the X direction, the support base 20 is pressed down by utilizing the pressure difference generated by the water flowing through the curved surface and the flat surface. The upper surface of the support base 20 is designed to be a curved surface, which is optimized according to the principle of fluid mechanics and adopts a streamlined design. By presetting a variety of fluid models, molds of the support base 20 with different curvatures are set, which is convenient for rapid selection and splicing. The lower surface is a plane, which is convenient for stable contact with the riverbed or dam foundation. A plurality of guide grooves are provided 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, if Figure 1 and Figure 2 As shown, the locking rod 30 is slidably inserted into the locking grooves of the positioning end 11 and the supporting end 12. When the locking rod 30 is located in the positioning end 11 and the supporting end 12 at the same time, the positioning end 11 and the supporting end 12 are locked with each other; when the locking rod 30 slides out of the positioning end 11 and is only located in the locking groove of the supporting end 12, the positioning end 11 and the supporting end 12 are unlocked, and the supporting end 12 rotates relative to the positioning end 11.

[0035] Furthermore, if Figure 1 and Figure 2 As shown, the stuffing boxes 41 are interconnected along the third direction and the second direction by connecting members 43, the connecting members 43 are hinged chains made of high-strength material, 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, and the overall structural strength is improved by laying additional interception nets 42 on two planes perpendicular to the water flow direction, and the interception nets 42 are set around the stuffing boxes 41 to facilitate water flow.

[0036] Furthermore, if Figure 1 and Figure 2 As shown, the stuffing box 41 is opened at the feeding port along the third preset direction. During use, support and blocking in the vertical direction are quickly formed by stuffing the inside.

[0037] A plugging method based on a front plugging structure comprises the following steps:

[0038] Step S1, in the measurement phase, a preliminary estimate of the width and depth of the breach is made;

[0039] Before sealing the breach in the dam, first use measurement equipment, specifically high-precision total stations and underwater sonar detectors, to make a preliminary estimate of the width and depth of the breach. During the measurement, the total station sets up multiple measurement control points around the dam to accurately measure the coordinates of both ends of the breach, thereby calculating the width of the breach. The underwater sonar detector detects the water depth at the breach by emitting and receiving sound wave signals, and then infers the depth of the breach.

[0040] Step S2, during the assembly phase of the support base 20, the support base 20 is spliced ​​along a second preset direction according to the data of the breach, so as 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 assembled in width.

[0042] Step S3, during the assembly phase 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 into the locking grooves of the positioning end 11 and the support end 12;

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

[0044] Step S4, during the auxiliary packing assembly stage, multiple packing boxes 41 are arranged along the second preset direction and the third preset direction according to the breach data to form corresponding multiple packing channels 44, and are installed between the 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: during the delivery phase, the assembled device is delivered as a whole using a lifting device;

[0047] After the assembly is completed, the device is dropped into the breach by means of hoisting equipment, and the weighted support base 20 and the positioning end 11 are used to assist in downward pressure, and the device is pressed tightly against the bottom of the water body by the pressure of the water flow on the curved surface.

[0048] Step S6, the plugging stage, use the lifting device to drop the assembled device as a whole, slide the locking rod 30, rotate the support rod, make the filling channel 44 close to the surface of the dam body, and drop the filling through multiple feeding channels to plug the breach.

[0049] Through the pre-set operating rope, the locking rod 30 is slid to allow the support end 12 to rotate relative to the positioning end 11, and the support rod is rotated to make the filling channel 44 roughly attached to the surface of the dam body, and then the sealing material is dropped along the feeding channel. Since there is a gap between the feeding channels, after quickly reducing the water flow of the water body, the remaining filling material is dropped to the front of the device for final sealing.

[0050] In summary, when using the dam front plugging structure and plugging method based on the gradual flow of breach under high head, the angle of the device can be flexibly adjusted through the rotating support end 12 and the positioning end 11 to adapt to different dam bodies; the downward pressure of the water flow on the device is increased through the large curved surface and the guide groove, and the water body is used to sink the device to improve the stability of the device under the water body; the applicable size and rapid equipment assembly are increased through the assembled stuffing box 41 and the support base 20, and the cumbersome steps of preliminary preparation are reduced; and the direct filling of the stuffing channel 44 is safe and simple, which is conducive to the rapid water-stopping and plugging of the dam body.

[0051] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. The front plugging structure of the dam based on the gradual flow of breach under high water head is characterized by: include: Two positioning columns (10) are provided with a positioning end (11) and a supporting end (12), wherein the supporting end (12) is rotatably arranged relative to the positioning end (11); A plurality of support bases (20), wherein the plurality of support bases (20) can be spliced ​​and fixed to each other, the support base (20) is located between the two positioning columns (10), and both ends of the support base (20) are fixedly mounted on the positioning end (11), and the distribution direction of the support base (20) is distributed along a first preset direction parallel to the water flow direction; A locking rod (30), wherein the supporting end (12) and the positioning end (11) are provided with locking grooves, and the locking rod (30) is slidably disposed in the locking grooves; An auxiliary stuffing assembly is installed between the two positioning columns (10), the auxiliary stuffing assembly comprises a plurality of stuffing boxes (41), interception nets (42) are arranged around the stuffing boxes (41), and feeding ports are provided on the upper and lower end surfaces of the stuffing boxes (41); A plurality of connecting members (43) are distributed around the stuffing box (41), and the connecting members (43) connect the stuffing boxes (41) to each other along a second preset direction and a third preset direction.

2. The dam front plugging structure based on the gradual flow of breach under high head according to claim 1 is characterized in that: The upper surface of the support base (20) is a curved surface, the lower surface of the support base (20) is a flat surface, and a plurality of guide grooves are provided on the curved surface of the support base (20).

3. The dam front plugging structure based on the gradual flow of breach under high head according to claim 2 is characterized in that: The locking rod (30) is slidably inserted into the locking grooves of the positioning end (11) and the supporting end (12); when the locking rod (30) is located in the positioning end (11) and the supporting end (12) at the same time, the positioning end (11) and the supporting end (12) are locked with each other; When the locking rod (30) slides out of the positioning end (11) and is only located in the locking groove of the supporting end (12), the positioning end (11) and the supporting end (12) are unlocked, and the supporting end (12) rotates relative to the positioning end (11).

4. The dam front plugging structure based on the gradual change of breach flow under high water head according to claim 3 is characterized in that: The stuffing boxes (41) are connected to each other along the second preset direction and the third preset direction to form an interception surface.

5. The dam front plugging structure based on the gradual flow of breach under high water head according to claim 5 is characterized in that: The stuffing box (41) forms a plurality of stuffing channels (44) along the third preset direction.

6. A plugging method based on a front plugging structure, characterized in that: The dam front plugging structure based on the gradual flow of breach under high head according to claim 5 comprises the following steps: Step S1, in the measurement phase, a preliminary estimate of the width and depth of the breach is made; Step S2, during the support base (20) assembly phase, the support base (20) is spliced ​​along a second preset direction according to the breach data to correspond to the breach width; Step S3, during the assembly phase of the positioning column (10), the positioning end (11) is mounted on both sides of the assembled support base (20), the support end (12) is mounted on the positioning end (11), and the locking rod (30) is passed through the locking grooves of the positioning end (11) and the support end (12); Step S4, auxiliary filler assembly assembly stage, arranging the plurality of filler boxes (41) along the second preset direction and the third preset direction according to the breach data to form a plurality of corresponding filler channels (44), and installing them between the two positioning columns (10) Step S5: during the delivery phase, the assembled device is delivered as a whole using a lifting device; Step S6, the plugging stage, use a lifting device to drop the assembled device as a whole, slide the locking rod (30), rotate the support rod, make the filling channel (44) close to the surface of the dam body, and drop the filling through the multiple feeding channels to plug the breach.

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