Underwater Blasting Nearby Structure Protection Device

Abstract

The present invention discloses a protective device for structures adjacent to underwater blasting, comprising a receiving structure, a first elastic member, a box assembly and a bubble curtain device, wherein the receiving structure is used to connect with a protected main body, and the receiving structure has a receiving portion arranged in a crisscross pattern, a plurality of first elastic members are arranged on the side of the receiving portion away from the protected main body, the box assembly is arranged in front of the receiving structure, and the box assembly abuts against the first elastic member, and the bubble curtain device is arranged on the side of the box assembly away from the receiving structure. During underwater blasting, the bubble curtain device can reduce the shock wave of the blasting, the box assembly can block the remaining shock wave and flying rocks, and the first elastic member and the receiving structure can buffer the vibration and increase the force-bearing area of ​​the protected main body, thereby reducing the impact on the protected main body and improving the protection effect.

Description

Technical Field

[0001] The present invention relates to the technical field related to underwater blasting, and in particular to a protective device for structures adjacent to underwater blasting. Background Art

[0002] As one of the main methods for constructing large underwater tunnels, underwater immersed tube tunnels have the characteristics of large engineering workload and complex construction conditions for tunnel foundation trench excavation and temporary waterway excavation. Underwater blasting is the primary method for excavating underwater foundation trenches and waterway rock formations, with the characteristics of high construction efficiency and low cost. During underwater blasting, the shock waves generated by the explosion will have many adverse effects on the constructed structures. Safety control of blasting vibrations, underwater shock waves, and flying rocks is also one of the key control points. In the existing technology, the protective effect of the protective structure is average. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a protective device for structures adjacent to underwater blasting, which can solve the problem of general protection effect of underwater blasting.

[0004] According to the first aspect of the present invention, a protective device for structures adjacent to underwater blasting includes: a receiving structure, a first elastic member, a box assembly and a bubble curtain device, wherein the receiving structure is used to connect to a protected body, and the receiving structure has receiving parts arranged in a criss-cross pattern, a plurality of the first elastic members are arranged on a side of the receiving part away from the protected body, the box assembly is arranged in front of the receiving structure, and the box assembly abuts against the first elastic member, and the bubble curtain device is arranged on a side of the box assembly away from the receiving structure.

[0005] The underwater blasting adjacent structure protection device according to the embodiment of the present invention has at least the following beneficial effects: during underwater blasting, the bubble curtain device can reduce the shock wave of the blasting, the box assembly can block the remaining shock wave and flying rocks, and the first elastic member and the receiving structure can buffer vibrations and increase the force-bearing area of ​​the protected body, thereby reducing the impact on the protected body and improving the protection effect.

[0006] According to some embodiments of the present invention, the supporting portion includes a plurality of vertical sleeper bars and a plurality of transverse sleeper bars, the plurality of vertical sleeper bars are arranged at intervals, the plurality of transverse sleeper bars are connected to one side of the vertical sleeper bars at intervals, and the vertical sleeper bars or the transverse sleeper bars are connected to the protected body.

[0007] According to some embodiments of the present invention, the first elastic members are located at the intersections of each of the vertical sleeper bars and each of the transverse sleeper bars.

[0008] According to some embodiments of the present invention, it further includes a second elastic member and a steel wire rope. The second elastic member is installed on the steel wire rope. The steel wire rope is hung on the protected main body, and the steel wire rope is arranged around the contour of the protected main body.

[0009] According to some embodiments of the present invention, both the first elastic member and the second elastic member are rubber tires.

[0010] According to some embodiments of the present invention, the box body assembly includes a plurality of buffer boxes, and the buffer boxes are stacked and connected to each other.

[0011] According to some embodiments of the present invention, a cavity is provided in the buffer box, and a plurality of strengthening members are provided in the cavity. Both ends of the strengthening members are respectively connected to the left and right side walls of the buffer box.

[0012] According to some embodiments of the present invention, the bubble curtain device includes at least two rows of spray pipes and a main pipe. The main pipe is used to connect to an air compressor. The spray pipes are communicated with the main pipe. The spray pipes extend along the length direction of the protected main body, and each of the spray pipes is spaced at intervals in the front-back direction of the protected main body. A plurality of spray holes are spaced on the spray pipes, and the spray holes are arranged upward.

[0013] According to some embodiments of the present invention, the buffer box is a container.

[0014] According to some embodiments of the present invention, there are interconnected holes communicating with each other between the buffer boxes to enable the cavities to communicate with each other. Pressure relief buffer holes are provided on the top and the left and right side walls of the box body assembly.

[0015] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0017] Figure 1 is a schematic diagram of the connection structure and the arrangement of the first elastic member in the embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the arrangement of the box body assembly;

[0019] Figure 3 is a schematic diagram of the arrangement of the protection device;

[0020] Figure 4 is a schematic diagram of the bubble curtain device;

[0021] Figure 5 is Figure 3 The partial enlarged view of position A in it;

[0022] Figure 6 It is the cross-sectional view of the box body assembly in some embodiments.

[0023] Reference numerals:

[0024] The receiving structure 100, the vertical sleeper 110, the horizontal sleeper 120;

[0025] The first elastic member 200;

[0026] The box body assembly 300, the buffer box body 310, the interconnecting hole 311, the cavity 320, the reinforcing member 330, the pressure relief buffer hole 340;

[0027] The bubble curtain device 400, the nozzle 410, the air injection hole 411, the main pipe 420;

[0028] The second elastic member 510, the steel wire rope 520. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Referring to Figures 1 to 3 , an underwater blasting adjacent structure protection device according to an embodiment of the first aspect of the present invention includes a receiving structure 100, a first elastic member 200, a box body assembly 300, and a bubble curtain device 400. The receiving structure 100 is used to connect with the protected main body, and the receiving structure 100 has receiving portions arranged in a criss-cross manner. A plurality of first elastic members 200 are all arranged on the side of the receiving portion away from the protected main body. The box body assembly 300 is arranged in front of the receiving structure 100, and the box body assembly 300 abuts against the first elastic member 200. The bubble curtain device 400 is arranged on the side of the box body assembly 300 away from the receiving structure 100. During underwater blasting, the bubble curtain device 400 can reduce the blasting shock wave, the box body assembly 300 can block the remaining shock wave and flying stones, and through the first elastic member 200 and the receiving structure 100, the vibration can be buffered and the stress area of the protected main body can be increased, thereby reducing the impact received by the protected main body and improving the protection effect.

[0033] Specifically, the protected body can be installed with the protection device in a dry state, and then filled with water for underwater blasting after the installation is completed. The bubble curtain device 400 provided in the protection device is the first protection measure, the box assembly 300 is the second protection, and the receiving structure 100 and the first elastic member 200 are the third protection. The receiving structure 100 can be fixedly installed on the protected body by expansion bolts. The criss-cross receiving parts of the receiving structure 100 can disperse the force, increase the contact area, and reduce the local force pressure. The first elastic member 200 is provided between the box assembly 300 and the first elastic member 200. The first elastic member 200 can buffer the impact received by the box body 310 between the receiving structure 100, the box body assembly 300 can be placed in front of the protected body, and the ground can be leveled with concrete pads to facilitate the placement of the box body assembly 300. A bubble curtain device 400 can be arranged in front of the box body assembly 300. The high-pressure gas ejected by the bubble curtain device 400 forms a row of rising, dense curtain-like bubbles in the water, forming an underwater air curtain wall. When the water shock wave generated by the blast passes through this curtain bubble wall, due to the compressible nature of the gas, the impact The wave energy is converted into the internal energy of the compressed bubbles. After the shock wave peak, the internal energy stored in the compressed bubbles is gradually released during the expansion of the bubbles. Therefore, the water shock wave pressure will decay, thereby playing a protective role. The box assembly 300 can prevent the impact of blasting rocks on the protected subject. The rocks can be directly blocked by the box assembly 300, and the receiving structure 100 and the first elastic member 200 can buffer the vibrations generated by the box assembly 310 and the blasting, and effectively protect the protected subject. Through the above structure, it can effectively block the impact of the water on the protected subject. Shock waves and flying rocks are prevented, and the degree of protection for the protected subject near the explosion is improved, and the protection effect is good. In addition, since the three measures of the bubble curtain device 400, the box assembly 300, the first elastic member 200 and the receiving structure 100 are adopted in sequence from the outside to the inside, the water shock waves of the underwater blasting can be reduced first, so that the impact of the box assembly 300 is reduced. The box assembly 300 almost only needs to block the impact of gravel, so the box assembly 300 can be reused, and the first elastic member 200 and the bubble curtain device 400 can also be reused, which can save blasting costs.

[0034] Reference Figure 1 In some embodiments of the present invention, the receiving portion includes a plurality of vertical sleeper bars 110 and a plurality of transverse sleeper bars 120, the plurality of vertical sleeper bars 110 are arranged at intervals, the plurality of transverse sleeper bars 120 are connected to one side of the vertical sleeper bars 110 at intervals, and the vertical sleeper bars 110 or the transverse sleeper bars 120 are connected to the protected body. The sleeper bars are low in cost, easy to install, and easy to disassemble.

[0035] Specifically, the vertical sleeper strips 110 and the horizontal sleeper strips 120 are easy to obtain, have low usage costs, and have a certain toughness, being able to withstand impacts. Expansion bolts can be driven into the protected object. The vertical sleeper strips 110 can be vertically and fixedly connected to the protected object through the expansion bolts. The vertical sleeper strips 110 can be arranged at intervals in a column, and multiple rows can be set according to the length of the wooden strips. After installing the vertical sleeper strips 110, the horizontal sleeper strips 120 can be installed on the surface of the vertical sleeper strips 110 at an angle of 90° in a staggered manner, and can be nailed and fastened at the intersections through spike nails. Moreover, the horizontal sleeper strips 120 are also arranged at intervals in a row, and can be arranged in multiple columns according to the length of the wooden strips. The vertical sleeper strips 110 and the horizontal sleeper strips 120 form an intersecting and crisscross bearing part to withstand impacts and protect the protected object. The installation of the sleeper strips is relatively convenient, without welding, and is easy to disassemble.

[0036] Referring to Figure 1 , in some embodiments of the present invention, the first elastic members 200 are all located at the intersections of the respective vertical sleeper strips 110 and the respective horizontal sleeper strips 120. This enables the vertical sleeper strips 110 and the horizontal sleeper strips 120 to not be easily broken by the first elastic members 200, ensuring that the protection effect does not fail.

[0037] Specifically, the first elastic members 200 can be bound by steel wires at the intersections of the vertical sleeper strips 110 and the horizontal sleeper strips 120. The force that can be borne at the intersections of the vertical sleeper strips 110 and the horizontal sleeper strips 120 is relatively large. By arranging the first elastic members 200 here, the force received by the first elastic members 200 from the box body assembly 300 can be borne by the bearing part, and the vertical sleeper strips 110 and the horizontal sleeper strips 120 are not easily broken, thus ensuring that the protection effect does not fail.

[0038] Referring to Figure 1 , in some embodiments of the present invention, there are also included second elastic members 510 and steel wire ropes 520. The second elastic members 510 are installed on the steel wire ropes 520. The steel wire ropes 520 are hung on the protected object, and the steel wire ropes 520 are arranged around the contour of the protected object. This can make up for the protection gap of the box body assembly 300 and play a role in further protection.

[0039] Specifically, there is a deviation between the contour of the protected object and the contour of the box body assembly 300, and it is difficult to achieve coincidence. Therefore, the area near the contour of the protected object is not protected. Thus, by arranging the second elastic members 510 at the contour of the protected object, the protection gap can be made up. Expansion bolts can be provided on the protected object, and the steel wire ropes 520 can be hung on the expansion bolts. The second elastic members 510 can be connected in series with the steel wire ropes 520 and positioned and connected using locking clasps. Furthermore, the second elastic members 510 can be hung near the contour of the protected object to play a role in further protection.

[0040] Reference Figures 1 to 3 In some embodiments of the present invention, the first elastic member 200 and the second elastic member 510 are both rubber tires. Rubber tires do not need to be specially manufactured and are easy to obtain. They can be discarded tires, which have low use costs and can be reused.

[0041] It can be understood that the first elastic member 200 can be installed at the intersection of two transverse sleeper bars 120 and a vertical sleeper bar 110. Specifically, the rubber tire can be a large tire and can be located on the two transverse sleeper bars 120, which can improve the buffering effect and the supporting part can also improve the supporting strength.

[0042] It is understandable that the rubber tire can be installed at the intersection of two vertical sleeper strips 110 and one transverse sleeper strip 120 .

[0043] Reference Figure 2 , Figure 5 and Figure 6 In some embodiments of the present invention, the box assembly 300 includes a plurality of buffer boxes 310, and the buffer boxes 310 are stacked and connected with each other. The box assembly 300 is huge in size, so it can be split into a plurality of smaller buffer boxes 310. The buffer boxes 310 are stacked to form the box assembly 300, which can be easily installed. It can be understood that each buffer box 310 can be provided with a lifting lug at the top four corners, and the lifting lug can be welded with steel bars to facilitate the crane to lift and stack them. After the buffer boxes 310 are stacked, the lifting lug can also be used as a limiter. The buffer boxes 310 on the second floor or above can be limited by the lifting lug of the lower buffer box 310, so that they cannot move laterally, so that each buffer box 310 can be stacked stably.

[0044] Reference Figure 6 In some embodiments of the present invention, a cavity 320 is provided in the buffer box 310, and a plurality of reinforcing members 330 are provided in the cavity 320, and both ends of the reinforcing members 330 are respectively connected to the left and right side walls of the buffer box 310. The reinforcing members 330 can not only make the buffer box 310 have a certain strength, making it not easy to break and fail, but also give it a certain deformation space.

[0045] Specifically, the reinforcement 330 can be a seamless tube. A seamless steel tube with a diameter of 89 mm and a wall thickness of 3.5 mm can be used as the reinforcement 330. The seamless tube can be welded in the cavity 320 inside the box to strengthen the strength of the buffer box 310, and the reinforcement 330 needs to be welded to the left and right side walls of the buffer box 310. The front and rear side walls need to withstand impact, and the front and rear side walls need to provide deformation and collapse to absorb the impact energy of the explosion. Therefore, the reinforcement 330 can only be welded to the left and right side walls. Through the above structure, the reinforcement 330 can not only make the buffer box 310 have a certain strength, so that it is not easy to break and fail, but also give it a certain deformation space.

[0046] Reference Figure 3 and Figure 4 In some embodiments of the present invention, the bubble curtain device 400 includes at least two rows of nozzles 410 and a main pipe 420, the main pipe 420 is used to connect to the air compressor, the nozzles 410 are connected to the main pipe 420, the nozzles 410 are extended along the length direction of the protected body, and each nozzle 410 is arranged at intervals along the front and rear direction of the protected body, and the nozzles 410 are provided with a plurality of jet holes 411 at intervals, and the jet holes 411 are arranged upward. It can form multiple rows of bubble curtains, and the explosion protection effect is good.

[0047] Specifically, an air compressor can be set on the shore to provide a high-pressure gas source to the main pipe 420. The main pipe 420 can adopt a seamless steel pipe with a diameter of 89 mm and a thickness of 3.5 mm. The main pipe 420 extends underwater to communicate with the nozzle 410. The nozzle 410 can be arranged in four rows, and the spacing between each row is 0.25 m. A seamless steel pipe with a diameter of 45 mm and a thickness of 3.5 mm can be adopted, and the nozzles 410 are arranged in a horizontal direction. The nozzles 410 can also be arranged in two groups, and two corresponding main pipes 420 can be arranged, which are respectively connected to the corresponding nozzles 410. The two groups of nozzles 410 are symmetrically arranged, and the nozzles 410 extend along the length direction of the protected body. A plurality of jet holes 411 are opened on the nozzle 410, and the jet holes 411 are arranged at intervals and arranged upward. The air compressor can be opened to 26 m3 / min. When the air compressor is turned on, the high-pressure airflow can be ejected from the nozzle 410. The bubble curtain effect test can be carried out in advance before use. After the installation is completed and the air compressor is turned on, backfill water to 2m, 4m, 6m and 8m respectively, and then turn on the air compressor to observe the bubble effect to see whether the bubbles are uniformly emitted within the length of the steel pipe. Through the above structure, four rows of bubble curtains can be formed, which can further improve the protection effect.

[0048] In some embodiments of the present invention, the buffer box 310 is a container. The container is easy to obtain and can be an abandoned container, which can save manufacturing costs. The container is easy to modify and can be modified later according to needs, which is easy to use.

[0049] Reference Figure 6 In some embodiments of the present invention, there are interconnected holes 311 provided between each buffer box body 310 to enable the communication of each cavity 320. Pressure relief buffer holes 340 are provided on the top and the left and right side walls of the box body assembly 300. Specifically, the interconnected holes 311 can be machined at corresponding positions on each buffer box body 310 so that the interconnected holes 311 of each buffer box body 310 correspond to each other, thereby enabling the cavities 320 of each buffer box body 310 to communicate with each other. And the pressure relief buffer holes 340 can be machined on the buffer box bodies 310 on the top and the left and right sides of the box body assembly 300. The pressure relief buffer holes 340 are located on the top and the left and right sides of the box body assembly 300. Before blasting, the pressure relief buffer holes 340 and the interconnected holes 311 can facilitate the inflow of water into the cavity 320 to discharge the air in the buffer box body 310 so that the buffer box body 310 will not float. During underwater blasting, the shock wave and flying stones of the blasting act on the front part of the box body assembly 300. After the front walls of each buffer box body 310 receive the energy, they deform. The water in the cavity 320 is squeezed. Part of it acts on the rear part of the buffer box body 310, and part of it discharges and flows out through the pressure relief buffer holes 340, so that this part of the energy that was originally to act on the protected object can be transferred through the pressure relief buffer holes 340, thereby reducing the impact on the protected object and further improving the protection effect.

[0050] It should be noted that the buffer pressure relief holes are not limited to the above embodiments, and other embodiments can also be adopted. For example, the top of the box body assembly 300 can be provided in an open manner, and the opening is used as a buffer pressure relief hole. That is, the buffer box body 310 on the upper part of the box body assembly 300 can have its top removed to facilitate pressure relief. At the same time, the reaction force generated by upward pressure relief can anchor the box body assembly 300 downward stably to increase the static friction force of the box body assembly 300 in the horizontal direction. The friction force can further offset the impact force in the horizontal direction, thereby further improving the protection effect.

[0051] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. Underwater blasting adjacent structure protection device, characterized in that: include: A receiving structure (100) is used to be connected to a protected body, and the receiving structure (100) has receiving parts arranged in a crisscross pattern; A plurality of first elastic members (200), all arranged on a side of the receiving portion away from the protected body; A box assembly (300) is arranged in front of the receiving structure (100), and the box assembly (300) is in abutment with the first elastic member (200); A bubble curtain device (400) is arranged on a side of the box assembly (300) away from the receiving structure (100); The box assembly (300) comprises a plurality of buffer boxes (310), wherein the buffer boxes (310) are stacked and connected to each other; The buffer box (310) is provided with a cavity (320), and a plurality of reinforcing members (330) are provided in the cavity (320), and two ends of the reinforcing members (330) are respectively connected to the left and right side walls of the buffer box (310); Interconnecting holes (311) are provided between the buffer boxes (310) so that the cavities (320) are interconnected. Pressure relief buffer holes (340) are provided on the top and left and right side walls of the box assembly (300). The top of the box assembly (300) is open to form an opening, which serves as the pressure relief buffer hole (340).

2. The underwater blasting adjacent structure protection device according to claim 1, characterized in that: The receiving portion comprises a plurality of vertical sleeper bars (110) and a plurality of transverse sleeper bars (120), the plurality of vertical sleeper bars (110) being arranged at intervals, the plurality of transverse sleeper bars (120) being connected to one side of the vertical sleeper bars (110) at intervals, and the vertical sleeper bars (110) or the transverse sleeper bars (120) being connected to the protected body.

3. The underwater blasting adjacent structure protection device according to claim 2, characterized in that: The first elastic members (200) are located at the intersections of each of the vertical sleeper bars (110) and each of the transverse sleeper bars (120).

4. The underwater blasting adjacent structure protection device according to claim 1, characterized in that: It also includes a second elastic member (510) and a steel wire rope (520), wherein the second elastic member (510) is mounted on the steel wire rope (520), the steel wire rope (520) is hung on the protected body, and the steel wire rope (520) is arranged around the contour of the protected body.

5. The underwater blasting adjacent structure protection device according to claim 4, characterized in that: The first elastic member (200) and the second elastic member (510) are both rubber tires.

6. The underwater blasting adjacent structure protection device according to claim 1, characterized in that: The bubble curtain device (400) comprises at least two rows of nozzles (410) and a main pipe (420), wherein the main pipe (420) is used to be connected to an air compressor, and the nozzles (410) are communicated with the main pipe (420), wherein the nozzles (410) are extended along the length direction of the protected body, and each of the nozzles (410) is arranged at intervals along the front-rear direction of the protected body, and a plurality of jet holes (411) are arranged at intervals on the nozzles (410), and the jet holes (411) are arranged upward.

7. The underwater blasting adjacent structure protection device according to claim 1, characterized in that: The buffer box (310) is a container.

Images