Gate protection device for blasting demolition of deepwater cofferdam

Abstract

The utility model relates to the technical field of rock mass engineering construction, and provides a gate protection device for blasting demolition of a deepwater cofferdam, which is characterized in that a protection plate is arranged between a gate and a blasting position, a plurality of convex structures are distributed on one surface of the protection plate facing the blasting position, the protection plate is wrapped by a hole net, and the hole net is arranged on the surface of the protection plate. Gaps exist between the two sides of the protection plate and the hole net. The protruding structure can disperse water hammer waves, reduces damage of the water hammer waves to adjacent buildings, has the advantages of being capable of achieving protection and relieving of damage to the gate in the blasting demolition process of the cofferdam, and ensures that the damage of the gate is reduced in the blasting demolition process of the cofferdam. And meanwhile, the anti-impact device has the advantages of being simple in structure, low in cost and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of rock mass engineering construction, and particularly relates to a gate protection device for underwater blasting demolition of deep-water cofferdams. Background Art

[0002] During the construction of current hydropower stations, in order to ensure that the water in rivers will not affect the project during construction, it is necessary to build a cofferdam in advance to ensure that there is no water in the construction area, facilitating construction under dry conditions. After the construction is completed, in order to carry out normal hydropower generation, it is necessary to demolish the cofferdam to introduce the water in the river. This demolition is generally completed by blasting. However, for blasting in water, due to the incompressibility of water and the different wave velocities in water, the power of blasting is greatly enhanced compared to that on the ground. Therefore, it is very likely to cause damage to the subsequent gates and other adverse effects during demolition. So, it is necessary to protect the gates well during the blasting process.

[0003] At present, during the actual underwater blasting process of engineering, a bubble curtain is usually arranged in front of the gate to reduce the negative effect of the water shock wave. However, the arrangement of the bubble curtain is relatively difficult, and there are often disadvantages such as discontinuous bubbles during the inflation process, resulting in the weakening effect not meeting the design requirements. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a gate protection device for underwater blasting demolition of deep-water cofferdams, including: the protection plate is arranged between the gate and the blasting position, a plurality of convex structures are arranged on the surface of the protection plate facing the blasting position, the hole mesh wraps the protection plate, and there are gaps between both sides of the protection plate and the hole mesh.

[0005] Further, the protection plate further includes holes, the convex structures are arranged around the holes, and both the convex structures and the holes are arranged at equal intervals.

[0006] Further, the holes are circular holes, and the diameter of the circular holes is between 1 cm and 2 cm.

[0007] Further, the thickness of the protection plate is at least 2 cm.

[0008] Further, it further includes suspension rings connected to the upper part of the hole mesh.

[0009] Further, a plurality of the suspension rings are arranged along the width direction of the hole mesh.

[0010] Further, it further includes counterweight weights suspended below the hole mesh.

[0011] Further, a plurality of the counterweight weights are arranged along the width direction of the hole mesh.

[0012] Further, the counterweight is suspended below the hole mesh by a steel wire rope.

[0013] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0014] 1. The gate protection device of the present invention is installed between the gate and the blasting point. The water hammer wave generated during blasting is reflected by the convex structure, reducing the harm of the water hammer wave to adjacent buildings. It has the advantages of being able to realize the damage protection and mitigation of the gate during the blasting demolition of the cofferdam, ensuring that the gate is protected during the blasting demolition of the cofferdam, and preventing it from being damaged by the shock wave and other adverse effects.

[0015] 2. The hole mesh of the present invention facilitates the water hammer wave to pass through the hole mesh to reach the protection plate, while preventing the crushed stones generated during blasting from hitting the protection plate and reducing the weight of the gate protection device for easy installation in front of the gate.

[0016] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a gate protection device for deep - water cofferdam blasting demolition provided by an embodiment of the present invention;

[0018] Figure 2 It is a schematic structural diagram of a hole mesh provided by an embodiment of the present invention;

[0019] Figure 3 It is a schematic structural diagram of a protection plate provided by an embodiment of the present invention;

[0020] Figure 4 For Figure 3 The cross - sectional view of the protection plate in the a - a direction in

[0021] Description of the reference numerals:

[0022] 1 - hole mesh, 11 - through hole, 2 - protection plate, 21 - convex structure, 22 - hole, 3 - lifting ring, 4 - counterweight. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following combines the drawings to describe a specific embodiment of the present invention in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution of the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0025] In the description of the embodiments of the present utility model, unless otherwise specified, the meaning of "a plurality" refers to two or more.

[0026] In the embodiments of the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner.

[0027] As Figure 1 shown, the embodiments of the present utility model provide a gate protection device for deep-water cofferdam blasting demolition, including: a protection plate 2 and a hole mesh 1. The protection plate 2 is arranged between the gate and the blasting position. A plurality of protruding structures 21 are arranged on one side of the protection plate 2, and the side of the protection plate 2 with the protruding structures 21 faces the blasting position. The hole mesh 1 wraps the protection plate 2, and there is a gap between both sides of the protection plate 2 and the hole mesh 1.

[0028] It can be understood that the hole mesh 1 includes the protection plate 2 mainly to protect the protection plate 2 and the protruding structures 21 on the protection plate 2.

[0029] It can be understood that after the hole mesh 1 wraps the protection plate 2, the head and tail of the hole mesh can be connected in various ways, such as binding tapes, buckles, etc. Specifically, those skilled in the art can set the shape and size of the through holes according to needs, and the present utility model does not limit this.

[0030] It can be understood that there is no gap between the hole mesh 1 and the protection plate 2. When the debris generated by the blasting hits the hole mesh 1, in order to avoid the protection plate 2 from breaking due to the specific impact force generated when the hole mesh 1 is hit by the stones, a certain gap is provided between the hole mesh 1 and the protection plate 2, which can avoid this problem.

[0031] As Figure 2As shown, optionally, in the embodiments of the present invention, the area of the through holes 11 of the hole mesh 1 should not be too small to ensure that the hole mesh 1 can effectively block large stones, prevent damage to the protection plate 2 inside the hole mesh 1, effectively extend the service life of the protection plate 2, save costs, and avoid unnecessary waste. Specifically, those skilled in the art can set the shape and size of the through holes according to requirements, and the present invention does not make any limitations thereto.

[0032] It can be understood that for the gate protection device to play a role in protecting the gate, the gate protection device should be set between the gate and the blasting point for protection.

[0033] Furthermore, for the gate protection device to play a better protective role, the gate protection device should be at least 5 meters away from the gate.

[0034] It can be understood that for the gate protection device to play a better protective role, the size of the gate protection device should be determined according to the size of the gate. Specifically, those skilled in the art can set the shape and size of the through holes according to requirements, and the present invention does not make any limitations thereto.

[0035] Furthermore, the shape of the through hole 11 can be any one of the following: circular (such as oval), square (such as rectangle), trapezoidal, and polygonal; specifically, those skilled in the art can set it according to requirements, and the present invention does not make any limitations thereto.

[0036] Furthermore, the thickness of the hole mesh 1 is at least 0.5 cm thick to ensure that the hole mesh 1 is not damaged when impacted by stones; specifically, those skilled in the art can set different thicknesses according to requirements, and the present invention does not make any limitations thereto.

[0037] Furthermore, the hole mesh 1 is made of a material with high hardness and corrosion resistance, which can not only effectively block the impact of stones but also increase the service life; specifically, those skilled in the art can select different materials according to requirements, and the present invention does not make any limitations thereto.

[0038] Optionally, in the embodiments of the present invention, the spacing distance between the through holes 11 is at least 0.3 cm, so that the protection ability of the protection plate is not reduced due to the dense through holes of the hole mesh 1; specifically, those skilled in the art can set it according to requirements, and the present invention does not make any limitations thereto.

[0039] As Figure 3 、 Figure 4 As shown, optionally, in the embodiments of the present invention, the protection plate 2 further includes holes 22, the raised structures 21 on the protection plate 2 are arranged around the holes 22, and the raised structures 21 and the holes 22 are arranged at equal intervals.

[0040] It can be understood that the protruding structures 21 and the holes 22 are arranged at equal intervals, which can make the impact force on each protruding structure 21 equal, and through this orderly arrangement, the center of gravity of the protection plate can be ensured to be at the center.

[0041] It can be understood that the protruding structure can reflect the water hammer wave, further reducing the harm of the water hammer wave to adjacent buildings. The arrangement of the holes can reduce the weight of the protection device and achieve the purpose of facilitating installation.

[0042] It can be understood that the shape of the holes can be any one of the following: circular (such as oval), square (such as rectangle), trapezoidal, and polygonal; specifically, those skilled in the art can set it according to needs, and the present invention does not make any limitations in this regard.

[0043] In an embodiment of the present invention, the holes are circular holes, and the diameter of the circular holes is between 1 cm and 2 cm.

[0044] It can be understood that the protruding structure 21 can effectively reduce the contact area between the protection plate 2 and the hole mesh 1, avoiding damage to the protection plate inside the hole mesh when the stone impacts the hole mesh.

[0045] It can be understood that the area of the holes 22 cannot be too large, otherwise it cannot effectively reduce the shock wave, and at the same time, it will cause damage to the gate behind when the stone passes through the protection plate 2.

[0046] It can be understood that the protection plate 2 has a strong ability to absorb shock waves. The purpose of the present invention is to directly block the smaller fragments, stones, etc. generated after blasting during the blasting demolition of the cofferdam, and prevent the further propagation of the shock wave. The protruding structures 21 and the holes 22 on the protection plate 2 can effectively reduce the blasting shock wave and weaken its peak value.

[0047] Therefore, the materials of the protection plate 2 can optionally include, but are not limited to, materials such as PVC plastic plates and foams that can absorb shock waves.

[0048] Optionally, in an embodiment of the present invention, a lifting ring 3 is connected above the hole mesh 2.

[0049] It can be understood that the lifting ring 3 is for facilitating the placement of the gate protection device in water and enabling effective fixation.

[0050] Optionally, in an embodiment of the present invention, the above-mentioned gate protection device for deep-water cofferdam blasting demolition further includes a counterweight 4, and the counterweight is connected to the lower part of the hole mesh.

[0051] It can be understood that the lifting ring 3 is for facilitating the placement of the gate protection device in water and enabling effective fixation.

[0052] It can be understood that if the weight of the gate protection device is insufficient, when facing the underwater shock wave, it will cause deviation and dislocation, losing the best protection effect. Therefore, a counterweight 4 can be added below the gate protection device to increase the weight of the gate protection device and ensure that there is no deviation or dislocation when facing the shock wave.

[0053] Furthermore, the counterweight 4 can be selected from items such as sandbags and concrete blocks; specifically, those skilled in the art can set it according to their needs, and the present utility model does not limit this.

[0054] Optionally, in the embodiment of the present utility model, a plurality of the hanging rings 3 and the counterweights 4 can be set according to the width of the hole mesh 1.

[0055] It can be understood that if the width of the gate protection device is relatively large, if only one hanging ring is set, the gate protection device cannot be fixed; if only one counterweight 4 is set, it cannot play a counterweight role either. Therefore, different numbers of counterweights can be set according to the actual situation.

[0056] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0057] The embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present utility model and without departing from the purpose of the present utility model and the scope protected by the claims, can also make many forms, all of which fall within the protection scope of the present utility model.

Claims

1. A gate protection device for blasting and demolition of deepwater cofferdams, characterized in that: include: A protective plate (2) and a mesh (1); The protective plate (2) is arranged between the gate and the blasting position, and a plurality of protruding structures (21) are arranged on a side of the protective plate (2) facing the blasting position; The mesh (1) wraps the protective plate (2), and there are gaps between the two sides of the protective plate (2) and the mesh (1).

2. The gate protection device for deepwater cofferdam blasting demolition according to claim 1, characterized in that: The protective plate (2) is also provided with a plurality of holes (22), and the protruding structures (21) are arranged around the holes (22).

3. The gate protection device for deepwater cofferdam blasting demolition as claimed in claim 2, characterized in that: The protruding structures (21) and the holes (22) are arranged at equal intervals.

4. The gate protection device for deepwater cofferdam blasting demolition as claimed in claim 3, characterized in that: The hole (22) is a circular hole, and the diameter of the circular hole is between 1 cm and 2 cm.

5. The gate protection device for deepwater cofferdam blasting demolition according to claim 1, characterized in that: The thickness of the protective plate (2) is at least 2 cm.

6. The gate protection device for deepwater cofferdam blasting demolition according to claim 1, characterized in that: It also includes a lifting ring (3) connected to the upper side of the mesh (1).

7. The gate protection device for deepwater cofferdam blasting demolition according to claim 6, characterized in that: A plurality of the hanging rings (3) are arranged along the width direction of the mesh (1).

8. The gate protection device for deepwater cofferdam blasting demolition according to any one of claims 1 to 7, characterized in that: It also includes a counterweight (4) suspended below the mesh (1).

9. The gate protection device for deepwater cofferdam blasting demolition according to claim 8, characterized in that: A plurality of counterweights (4) are arranged along the width direction of the mesh.

10. The gate protection device for deepwater cofferdam blasting demolition according to claim 9, characterized in that: The counterweight (4) is suspended below the mesh (1) via a steel wire rope.

Images