Plugging device and method for small and medium-sized breach

Abstract

The invention discloses a plugging device and method for small and medium-sized breaches, and the plugging device comprises a plugging main body with a semi-elliptical horizontal section; the plugging main body is formed by splicing a plurality of streamline modules with magnetic conductivity; the two electromagnetic force bases are fixedly arranged at the positions, at the two ends of the breach, of the dam correspondingly; and the two ends of the plugging main body are adsorbed and fixed by the two electromagnetic force bases respectively so as to prevent water flow from continuously flowing to the breach. The device can meet the requirements of different breach sizes and water surface heights and the emergency requirement of collapse lifting emergency rescue, the problem of transportation of a large number of emergency flood prevention materials is solved, all the structures can be repeatedly used, the material recycling rate is increased, the construction cost is saved, and the construction safety is high.

Description

Technical Field

[0001] The present invention relates to the technical field of breach plugging. More specifically, the present invention relates to a plugging device and method for medium and small breaches. Background Art

[0002] The dike breach is a sudden event, and the breach will continue to expand over time. If people cannot be organized to quickly plug it in time, it will surely cause huge losses to people's lives and property. At present, the existing plugging methods mainly include filling earth and stone for plugging, grass and earth cofferdam plugging, bridging and flat plugging, driving piles for plugging, sunken ship method, steel-wood-earth-rock combined dam and other plugging methods. The above methods can effectively plug the breach, but except for the sunken ship method, the final plugging link of the existing methods cannot do without a large amount of flood control materials. During the flood fighting and rescue process, there are various types of flood control materials, and the huge amount of material usage leads to high costs in the storage and transportation links. At the same time, it is difficult to organize the materials to be transported to the required locations in case of emergency, delaying the precious rescue time. At the same time, the existing rescue measures also have problems such as low plugging efficiency and success rate, and it is difficult to clean up and recycle the materials after the rescue is completed. Therefore, it is very necessary to seek a rescue method that can quickly plug the breach, use fewer materials, and the used resources can be recycled. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0004] To achieve these and other advantages in accordance with the present invention, there is provided a plugging device for medium and small breaches, comprising: A plugging main body, the horizontal cross-section of which is semi-elliptical; the plugging main body is spliced by a plurality of streamlined modules with magnetic permeability; Two electromagnetic force bases are respectively fixedly arranged on the dikes at both ends of the breach; both ends of the plugging main body are respectively adsorbed and fixed by the two electromagnetic force bases to block the water flow from continuing to flow towards the breach.

[0005] Preferably, a plurality of protruding ridge structures are horizontally arranged at intervals on the flood-facing surface of the streamlined module.

[0006] Preferably, a mating plug and slot are respectively arranged on both sides of the streamlined module, and connection holes are respectively opened at the plug, the slot and the upper and lower ends of the streamlined module.

[0007] Preferably, the streamlined module is made of a magnetic metal material.

[0008] Preferably, the electromagnetic force base includes an insulating housing and an electromagnet unit disposed within the insulating housing. The electromagnet unit includes a plurality of iron cores that are sequentially abutted and coils that are sequentially wound around the plurality of iron cores. The winding directions of the coils on the iron cores at both ends are opposite.

[0009] Preferably, the electromagnetic force base includes an insulating housing and a plurality of electromagnet units disposed within the insulating housing; the electromagnet unit includes a plurality of iron cores that are sequentially abutted and coils that are sequentially wound around the plurality of iron cores. The winding directions of the coils on the iron cores at both ends are opposite; the plurality of electromagnet units are connected in parallel.

[0010] Another object of the present invention is to provide a method for plugging medium and small-sized breaches, using the plugging device for medium and small-sized breaches as described above, including the following steps: S1. Assemble the plugging main body: According to the length of the breach and the water surface height, splice the streamlined modules to assemble the plugging main body; S2. Fix the base: Fix the electromagnetic force base on the flood-facing surface of the dams at both ends of the breach, and connect the power supplies to the corresponding electromagnetic force bases respectively; S3. Fix the plugging device: Tie the floating airbag around the plugging main body and place it in the water. Use a ship to tow the plugging main body to the flood-facing surface of the dam; after the electromagnetic force base adsorbs both ends of the plugging main body, release the floating airbag; S4. Fill the gap: Determine the plugging method according to the on-site breach situation and carry out the plugging construction of the breach.

[0011] The present invention has at least the following beneficial effects: 1. The streamlined plugging device and method for medium and small-sized breaches provided by the present invention can quickly assemble a plugging main body through a plurality of streamlined modules, can meet the requirements of different breach sizes and water surface heights, and can meet the emergency needs of levee emergency rescue.

[0012] 2. The streamlined plugging device and method for medium and small-sized breaches provided by the present invention fix both ends of the plugging main body on the dam through the electromagnetic force base, and the streamlined module is made of a magnetic metal material. When the electromagnetic force base adsorbs the plugging main body, due to the magnetic force, the streamlined modules adsorb each other, and the overall strength of the plugging main body is further improved.

[0013] 3. The streamlined plugging device and method for medium and small-sized breaches provided by the present invention avoid the problem of transporting a large amount of emergency flood control materials, and each structure can be reused, improving the material recycling rate, reducing material loss, and saving construction costs.

[0014] 4. The streamlined plugging device and method for medium and small-sized breaches provided by the present invention do not require personnel to work underwater during the plugging process, and can complete the emergency dike repair work while ensuring the safety of the rescue personnel.

[0015] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the plugging device for medium and small-sized breaches described in the present invention; Figure 2 It is a schematic structural diagram of the streamlined module described in the present invention; Figure 3 It is a top view of the streamlined module described in the present invention; Figure 4 It is a schematic structural diagram of the electromagnet unit described in the present invention; Figure 5 It is a schematic structural diagram of the electromagnetic force base described in the present invention; Figure 6 It is a schematic structural diagram when the ship is towing the plugging main body in the plugging method for medium and small-sized breaches described in the present invention; Figure 7 It is a schematic structural diagram when both ends of the plugging main body are close to the electromagnetic force base in the plugging method for medium and small-sized breaches described in the present invention. Detailed Embodiments

[0017] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0018] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present invention, the orientation or positional relationship indicated by the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does 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 cannot be understood as a limitation to the present invention.

[0019] As Figures 1 to 7 shown, the present invention provides a plugging device for medium and small-sized breaches, including: A plugging main body 1, whose horizontal cross-section is semi-elliptical; the plugging main body 1 is spliced by a plurality of streamlined modules 11 with magnetic conductivity; Two electromagnetic force bases 2 are respectively and fixedly arranged on the dikes 4 at both ends of the breach; both ends of the plugging main body 1 are respectively adsorbed and fixed by the two electromagnetic force bases 2 to block the water flow from continuing to flow towards the breach.

[0020] In this technical solution, a plurality of the streamlined modules 11 are used to form the plugging main body 1. The plugging main body 1 is fixed in front of the breach, and the electromagnetic force base 2 is used to adsorb and fix the plugging main body 1. The streamlined device can plug the gap, effectively disperse the water flow impact force, and provide good construction conditions for the subsequent plugging construction of the breach and the reinforcement of the breached dike. As Figure 1 shown, the horizontal cross-section of the plugging main body 1 is semi-elliptical, so as to directly impact and distribute the water flow to the dike structures on both sides, reducing the impact force on the plugging device. The linear control equation of the horizontal cross-section of the plugging main body 1 is an ellipse equation with adjustable semi-major axis (x) and semi-minor axis (y), specifically: (1) In formula (1), D0 is the maximum cross-sectional diameter, that is, the semi-major axis of the ellipse in the y-axis direction, which determines the longitudinal height of the line shape, with the unit of m; L is the length of the inflow section, that is, the semi-major axis of the ellipse in the x-axis direction, which determines the transverse range of the line shape, with the unit of m.

[0021] In another technical solution, as Figure 2 shown, a plurality of raised ridge structures 13 are horizontally arranged at intervals on the flood-facing surface of the streamlined module 11. A depression is formed between two adjacent ridge structures 13. As Figure 3 shown, when the water flow impacts the plugging main body 1, part of the water flow is diverted by the protruding ridge structure 13 to the depression, and then flows outwards along the adjacent ridge structures 13 due to inertia, interacting with the water flow continuously impacting the wall surface, and a secondary vortex group is formed inside the ridge structure 13. The secondary vortex group reduces the direct impact of the external water flow on the flood-facing surface of the plugging main body 1, improves the stability of the fluid motion in the boundary layer, and the energy exchange between the external water flow and the plugging main body 1 is correspondingly weakened, so that the water flow impact intensity is reduced.

[0022] In another technical solution, fitting plugs 12 and slots 14 are respectively arranged on both sides of the streamlined module 13. Connecting holes are respectively formed in the fitting plugs 12, the slots 14 and the upper and lower ends of the streamlined module 11. When connecting two adjacent streamlined modules 11 horizontally, insert the fitting plug 12 of one streamlined module 11 into the slot 14 of another streamlined module 11, align the connecting holes of the fitting plug 12 and the slot 14 one by one, and then use bolts to fix the two horizontally arranged streamlined modules 11. When connecting two adjacent streamlined modules 11 vertically, align the connecting hole at the upper end of one streamlined module 11 with the connecting block at the lower end of another streamlined module 11, and then use bolts to fix the two vertically arranged streamlined modules 11. Assemble a plurality of streamlined modules 11 into the plugging main body 1 quickly according to the above method.

[0023] In another technical solution, the streamlined module 11 is made of a magnetic metal material. Further, the ridge structure 13, the fitting plug 12, the slot 14 on the streamlined module 11 and the bolts connecting the two streamlined modules 11 are also made of magnetic metal materials. When the electromagnetic force base 2 adsorbs the plugging main body 1, due to the influence of magnetic force, the streamlined modules 11 adsorb each other, and the overall strength of the plugging main body 1 is further improved.

[0024] In another technical solution, the electromagnetic force base 2 includes an insulating housing 21 and an electromagnet unit arranged in the insulating housing 21. The electromagnet unit includes a plurality of iron cores 22 in abutting connection in sequence and coils 23 wound around the plurality of iron cores 22 in sequence. The winding directions of the coils 23 on the iron cores 22 at both ends are opposite. The two ends of the coil 23 of the electromagnet unit are respectively connected to the positive and negative electrodes of a power supply 3 through wires 24. After being powered on, the coil 23 is quickly magnetized, and the internal iron core 22 is also magnetized by the magnetic field generated by the energized coil 23. The magnetic fields generated by the coil 23 and the magnetized iron core 22 are superimposed on each other, so that the magnetic field of the electromagnet unit is greatly enhanced. The insulating housing 21 is made of a non-metallic insulating material, which can isolate the direct influence of external environmental factors inside and will not affect the normal action of magnetic force on the outside. The magnetic field strength, magnetic induction intensity and electromagnetic suction formula of the electromagnetic force base are as follows: (2) In formula (2), H is the magnetic field strength, with the unit of A / m; N is the number of turns of the coil; I is the current intensity, with the unit of A, L e is the effective magnetic circle length, with the unit of m.

[0025] (3) In formula (3), B is the magnetic induction intensity, with the unit of Wb / m 2 ; μ 0 is the magnetic permeability, A e is the effective cross-sectional area, with the unit of m 2 ; Φ is the magnetic flux, with the unit of Wb.

[0026] (4) In formula (4), F is the electromagnetic suction force, with the unit of N; B is the magnetic induction intensity, with the unit of Wb / m 2 ; S is the magnetic attraction area, with the unit of m 2 .

[0027] As shown in Figure 4 , as an example, the electromagnet unit is provided with three iron cores 22, and the three iron cores 22 are arranged in an inverted I shape. The coil 23 is wound around the three iron cores 22 in sequence, and the winding directions on the two iron cores 22 at both ends are opposite to make the two ends of the electromagnet unit keep different magnetic poles, avoiding the cancellation of the magnetization effect and reducing the electromagnetic force.

[0028] In another technical solution, the electromagnetic force base 2 includes an insulating housing 21 and a plurality of electromagnet units arranged in the insulating housing; the electromagnet unit includes a plurality of iron cores 22 that are sequentially abutted and coils 23 that are sequentially wound around the plurality of iron cores 22, wherein the winding directions of the coils 23 on the iron cores 22 at both ends are opposite; the plurality of electromagnet units are arranged in parallel. Refer to Figure 5 , during actual use, 2 or more of the electromagnet units can be arranged in the electromagnetic force base 2.

[0029] The present invention also provides a method for plugging medium and small breakwaters, using the plugging device for medium and small breakwaters as described above, including the following steps: S1. Assemble the plugging main body: According to the length of the breakwater and the water surface height, splice the streamlined modules to assemble the plugging main body; According to the breakwater site, determine the length and water surface height that need to be plugged for the breakwater, determine the number of the required streamlined modules 11, and then splice the plurality of streamlined modules 11 horizontally and vertically to form the plugging main body 1 until the plugging main body 1 horizontally meets the plugging length requirement and the height is higher than the water surface height; finally, check the fixing situation of each bolt.

[0030] S2. Fixing the base: Fix the electromagnetic force base on the flood-facing side of the dikes 4 at both ends of the breach, and connect the power supply 3 to the corresponding electromagnetic force bases respectively; Perform the operation of wrapping the original dike head of the breach to prevent the breach from further expanding. After the breach stops expanding, fix the two electromagnetic force bases 2 on the flood-facing side of the dike 4 on the shore. Connect the two power supplies 3 to the corresponding electromagnetic force bases 2 through wires 24 respectively. The electromagnet units inside the electromagnetic force bases 2 start to generate electromagnetic fields under the influence of current, and the electromagnetic fields generate suction forces on nearby magnetic materials. Step S2 can be carried out synchronously with step S1.

[0031] S3. Fixing the plugging device: Tie the floating airbag 5 around the plugging main body 1 and place it in the water, and use the ship 6 to tow the plugging main body 1 to the flood-facing side of the dike 4; after the electromagnetic force base 2 adsorbs both ends of the plugging main body 1, release the floating airbag; As Figure 6 shown, tie the floating airbag 5 around the plugging main body 1 and place it in the water to ensure that the buoyancy is sufficient to make the plugging main body 1 float on the water surface. Tie one end of the towing rope 7 to the plugging main body 1 and the other end to the ship 6, and the two ships 6 tow the floating plugging main body 1 to the flood-facing side of the dike 4 and adjust the plugging main body 1 so that its flood-facing side faces the direction of the water flow impact.

[0032] After adjusting the position of the plugging main body 1, with the impact of the water flow, the whole plugging main body 1 slowly moves towards the breach of the dike 4, and both ends gradually approach the electromagnetic force base 2, as Figure 7 shown. When the electromagnetic force base 2 adsorbs the end of the plugging main body 1, release the floating airbag 5. When the plugging main body 1 is close enough to the dike shore, the magnetic fields generated by the electromagnetic force bases 2 on both sides of the dike breach capture the ends on both sides of the plugging main body 1, and the electromagnetic suction force generated by the electromagnetic force bases 2 attracts the two ends to the electromagnetic force bases 2 and offsets the displacement generated by the water flow impact device.

[0033] S4. Filling the gap: Determine the plugging method according to the on-site breach situation and carry out the plugging construction of the breach.

[0034] After fixing the plugging main body 1 on the electromagnetic force base 2, the plugging main body 1 can disperse the water flow to the intact dikes 4 on both sides, block the water flow from continuing to flow towards the breach, thereby slowing down the water flow velocity of the breach and creating favorable conditions for the subsequent dike repair and reinforcement operations. After determining that the overall stability performance of the plugging device meets the requirements, start the operation of filling the gap, as Figure 1 shown. Determine the plugging method according to the breach and on-site conditions, such as choosing the vertical plugging method if the geological conditions are good, and choosing the horizontal plugging method if the water flow velocity is fast, etc.

[0035] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A plugging device for medium and small breakwaters, characterized in that Comprising: A plugging main body, the horizontal cross-section of which is semi-elliptical; the plugging main body is spliced by a plurality of streamlined modules with magnetic permeability. Two electromagnetic force bases, which are respectively fixedly arranged on the dams at both ends of the breach; both ends of the plugging main body are respectively adsorbed and fixed by the two electromagnetic force bases to block the water flow from continuing to flow towards the breach.

2. The plugging device for medium and small breaches according to claim 1, characterized in that, A plurality of raised ridge structures are horizontally arranged at intervals on the flood-facing surface of the streamlined module.

3. The plugging device for medium and small breaches as described in claim 1, characterized in that, A plug and a slot which are matched with each other are respectively arranged on both sides of the streamlined module, and connection holes are respectively formed in the plug, the slot and the upper and lower ends of the streamlined module.

4. The plugging device for medium and small breakwaters according to claim 1, characterized in that, The streamlined module is made of a magnetic metal material.

5. The plugging device for medium and small breaches according to claim 1, wherein The electromagnetic force base includes an insulating housing and an electromagnet unit arranged in the insulating housing. The electromagnet unit includes a plurality of iron cores abutting in sequence and coils wound around the plurality of iron cores in sequence. The winding directions of the coils on the iron cores at both ends are opposite.

6. The plugging device for medium and small breaches as described in claim 1, characterized in that, The electromagnetic force base includes an insulating housing and a plurality of electromagnet units arranged in the insulating housing; the electromagnet unit includes a plurality of iron cores abutting in sequence and coils wound around the plurality of iron cores in sequence. The winding directions of the coils on the iron cores at both ends are opposite; the plurality of electromagnet units are arranged in parallel.

7. A plugging method for medium and small breakouts, using the plugging device for medium and small breakouts as described in claim 1, characterized in that, Including the following steps: S1. Assembling the plugging main body: According to the length and water surface height of the breach, splice the streamlined modules to assemble the plugging main body. S2. Fixing the base: Fix the electromagnetic force base on the flood-facing surface of the dams at both ends of the breach, and connect the power supply to the corresponding electromagnetic force base respectively. S3. Fixing the plugging device: Tie the floating airbag around the plugging main body and place it in the water, and use a ship to tow the plugging main body to the flood-facing surface of the dam; after the electromagnetic force base adsorbs both ends of the plugging main body, release the floating airbag. S4. Filling the gap: Determine the plugging method according to the on-site breach situation and carry out the plugging construction of the breach.

Images