Protective structure for weakening blasting shock waves
By designing a grid -like buffer wall, using the combined structure of multi -layer partitions, sandbags and water bags to solve the problem of weakening and protective structure that can be used in underground blasting, and realizes the intensity of effectively weakening impact waves and facilitating local replacement. Effect.
Patent Information
- Application Number
- CN202411589856.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-01-28
AI Technical Summary
In underground blasting construction, the prior art is difficult to effectively reduce the intensity of the blasting shock wave, and traditional gun covers and wave-blocking walls have limitations, such as difficulty in replacement, long construction time, and inability to reuse.
Designed a grid -like buffer wall composed of multiple upper and lower slots. There are three partitions, sand bags, water bottles, and water bags inside the trough. And multi -layer partition structures to enhance the absorption and decentralization of shock waves.
This structure can quickly assemble into a buffer wall that is appropriate size, effectively weaken the intensity of the blasting impact wave, and partially replaced when local damage, extend the service life and save costs.
Smart Images
Figure CN119374435A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of blasting protection, and in particular relates to a protective structure for weakening blasting shock waves. Background Art
[0002] Underground blasting refers to rock and soil blasting operations carried out underground (such as underground mines, underground chambers, tunnels, etc.). During blasting, the rock and soil medium near the blasting source quickly melts and vaporizes to form a high-pressure balloon, which expands outward and pushes the surrounding medium, thereby forming an outward-expanding shock wave in the medium. The shock wave compresses the medium and pushes it outward. Since the shock wave decays faster in rock than in air, the impact of shock waves such as underground city subway blasting construction on the surrounding area will be greater, not only destroying the glass doors and windows of residential buildings, but also making the glass doors and windows of surrounding residential buildings rattle or even break during blasting, which will also pose a huge threat to people near the blasting source.
[0003] At present, during underground blasting, blast blankets or wave-blocking walls are usually used to reduce the intensity of the shock wave caused by the blasting. However, blast blankets have limited ability to weaken the shock wave and can only be replaced as a whole after partial damage. Wave-blocking walls are formed by concrete or stone masonry, which takes a long time to build and usually cannot be reused. Therefore, a protective structure that is easy to construct and can be partially replaced is needed. Summary of the invention
[0004] The purpose of the present invention is to provide a protective structure for reducing explosion shock waves, which has a short construction time and can be partially replaced for repeated use.
[0005] The protective structure for weakening the blast shock wave comprises a buffer wall, which is composed of a plurality of troughs connected up and down, which are detachably connected together in a grid shape, and each trough is installed with three partitions installed inside, which slide and match with the trough and are distributed up and down, and sandbags and water bags are placed below and above the middle partition respectively, and grid-shaped wire mesh ropes are arranged above and below the buffer wall, and the four surfaces at the top and the four surfaces at the bottom of each trough are fixed with connecting seats distributed in a rectangular shape and used to connect the wire mesh ropes, and the connecting seat comprises a "U"-shaped mounting plate, and the two ends of the mounting plate are provided with through grooves connected inside and outside, and baffles rotatably matched with the two through grooves are installed in the two through grooves, one end of the two baffles is located in the mounting plate and the spacing is smaller than the diameter of the wire mesh rope, and one end of each baffle located in the mounting plate is installed with a spring for keeping the baffle in a horizontal state, and the two ends of the mounting plate are installed with adjustment components for controlling the rotation direction of the baffle.
[0006] Furthermore, two inserting blocks are fixed on two of the outer side walls of the trough body, and two slots for the inserting blocks to be inserted upward and stuck are opened on the other two outer side walls.
[0007] Furthermore, the insert block is a dovetail structure, and the slot is a dovetail slot without a lower slot wall.
[0008] Furthermore, a limiting block is fixed on the side wall of the partition, and a limiting groove without an upper groove wall is correspondingly opened on the inner wall of each groove body. The limiting block is located in the corresponding limiting groove and slides with it up and down.
[0009] Furthermore, the limiting groove is provided on the side wall of the groove body to which the insert block is fixed.
[0010] Furthermore, the four connecting seats at the top of the tank body and the four connecting seats at the bottom of the tank body are symmetrically distributed up and down.
[0011] Furthermore, the through slot has no upper slot wall and a rotating shaft is fixed inside, and the other end of the baffle is sleeved on the rotating shaft and rotatably matched therewith.
[0012] Furthermore, the adjustment assembly includes a block, the width of which is the same as that of the baffle and is arranged on the top of one end of the baffle located inside the mounting plate. One end of the block is hinged to the mounting plate, and the other end is plug-fitted to the mounting plate through a connecting block.
[0013] Furthermore, a clamping seat with a "C"-shaped structure and used for clamping the wire mesh rope is fixed to the inner bottom of the mounting plate.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] First, the present invention adopts a method of detachably connecting a plurality of trough bodies by inserting an insert block of one trough body upward into a slot of another trough body, so that it can be quickly assembled into a grid-shaped buffer wall of a suitable size according to the scene and power of the blasting to weaken the shock wave generated by the blasting, and in the event of local damage, only the damaged part of the trough body needs to be replaced and it can be reused, thereby saving more costs in long-term use.
[0016] Second, the present invention can divide the trough body into four chambers through three partitions, so that the blasting shock wave encounters more interfaces and obstacles during the propagation process, resulting in energy dispersion and consumption in multiple directions, thereby further enhancing the device's ability to weaken the shock wave, and sandbags and water bags are placed in the two middle chambers. The absorption of shock wave energy by the sandbags and water bags can effectively play a role in counterweighting and greatly weakening the blasting shock wave, and the use of sandbags and water bags is easier and more convenient than filling with water or sand. The sandbags mainly resist shock waves by increasing counterweights and improving the stability of the device, and mainly rely on friction and displacement to weaken the shock wave generated by the blast. The water in the water bag has extremely low compressibility, and the water in the water bag can absorb a large amount of heat energy and mechanical energy as well as the water wedge effect of the water. When the device is subjected to a shock wave, the water bag can greatly absorb and disperse the energy of the shock wave.
[0017] Third, the present invention uses a connecting seat and a mounting plate with one end hinged to the mounting plate and the other end plugged into the mounting plate. When the connecting block is plugged into the mounting plate (the upper connecting seat is taken as an example here), the end of the block located in the mounting plate can only rotate downward and block the end of the block from rotating upward. Therefore, the wire mesh rope can be easily inserted into the mounting plate to connect the wire mesh rope to all the slots, and the wire mesh rope can be prevented from being separated from the mounting plate when the device is subjected to a shock wave, thereby ensuring that the wire mesh rope is always connected to the slot. At the same time, this embodiment can also release the restriction on the baffle after rotating the baffle so that the baffle is not above the baffle, so that the wire mesh rope can be directly pulled out of the mounting plate, thereby releasing the connection between the wire mesh rope and the buffer wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of the structure of the invention;
[0019] Figure 2 for Figure 1 A top view of
[0020] Figure 3 for Figure 1 Bottom view of
[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the middle tank;
[0022] Figure 5 for Figure 1 The enlarged view of point A in the middle;
[0023] Figure 6 for Figure 1 The enlarged view of point B in the middle;
[0024] Figure 7 for Figure 2Enlarged view of point C in the middle;
[0025] Figure 8 for Figure 4 Sectional view at DD in the middle;
[0026] The names of the components in the figure are: 1. trough body; 2. insert block; 3. limit block; 4. partition; 5. wire mesh rope; 6. limit slot; 7. mounting plate; 8. water bag; 9. sandbag; 10. slot; 11. baffle; 12. block; 13. rotating shaft; 14. spring; 15. holder; 16. connecting block; 17. hinge. DETAILED DESCRIPTION
[0027] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
[0028] Example 1
[0029] The protective structure for reducing blast shock waves described in this embodiment includes a buffer wall, which is composed of a plurality of slots 1 connected up and down, and the plurality of slots 1 are detachably connected together in a grid shape, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, two plug blocks 2 are fixed on two of the outer walls of the trough body 1, and two slots 10 for the plug blocks 2 to be inserted upward and stuck are opened on the other two outer walls. In this embodiment, a plurality of trough bodies 1 are detachably connected by inserting the plug block 2 of one trough body 1 upward into the slot 10 of another trough body 1, so that they can be quickly assembled into a grid-like buffer wall of a suitable size according to the scene and power of the blasting to weaken the shock wave generated by the blasting, and in the case of local damage, only the damaged part of the trough body 1 needs to be replaced for continued reuse, thereby saving more costs in long-term use; wherein the plug block 2 is a dovetail structure, and the slot 10 is a dovetail slot without a lower groove wall. Since the diffusion of the shock wave is arc-shaped, the dovetail plug block 2 and the slot 10 in this embodiment make the connection between the plurality of trough bodies 1 more firm, and less likely to separate when impacted; in practical applications, the plug block 2 and the slot 10 can also be a "T"-shaped structure;
[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8As shown, in this embodiment, the insert blocks 2 on each tank body 1 are respectively located on opposite side walls, so as to facilitate identification and installation by the staff. In actual application, the insert blocks 2 can also be on the adjacent side walls of the tank body 1;
[0031] Each tank body 1 is internally provided with three partitions 4 which are arranged in an up-and-down sliding manner, such as Figure 1 , Figure 4 and Figure 8 As shown, a limiting block 3 is fixed on the side wall of the partition 4, and a limiting groove 6 without an upper groove wall is correspondingly opened on the inner wall of each slot body 1, and the limiting block 3 is located in the corresponding limiting groove 6 and slides with it up and down. In this embodiment, the slot body 1 can be divided into four chambers by three partitions 4, so that the blasting shock wave encounters more interfaces and obstacles during the propagation process, resulting in energy dispersion and consumption in multiple directions, thereby further enhancing the device's ability to weaken the shock wave, wherein the partition 4 also has only one set of limiting blocks 3 fixed on the opposite side walls, and the limiting groove 6 is opened on the side wall of the slot body 1 where the plug block 2 is fixed, so as to avoid the conflict between the limiting groove 6 and the slot 10; in actual application, the limiting block 3 and the limiting groove 6 have a certain friction, so that the partition 4 can be stabilized in the current position when not subjected to external force, and at the same time, a pull groove is opened on the top of each partition 4 or a pull rope is fixed to facilitate pulling the partition 4 out of the slot body 1;
[0032] Sandbags 9 and water bags 8 are placed below and above the middle partition 4, respectively. Figure 1 As shown, the absorption of shock wave energy by the sandbag 9 and the water bag 8 can effectively play the role of counterweight and greatly reduce the blasting shock wave, and the use of the sandbag 9 and the water bag 8 is easier and more convenient than the method of filling with water or sand. The sandbag 9 mainly resists the shock wave by increasing the counterweight and improving the stability of the device, and mainly relies on friction and displacement to reduce the shock wave generated by the blasting. The water in the water bag 8 has very small compressibility, and the water in the water bag 8 can absorb a large amount of heat energy and mechanical energy as well as the water wedge effect of the water. When the device is subjected to a shock wave, the water bag 8 can greatly absorb and disperse the energy of the shock wave.
[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7, a mesh-shaped steel wire rope 5 is arranged above and below the buffer wall, and rectangular mounting plates 7 are fixed to the four faces of the top and the four faces of the bottom of each trough body 1, and the mounting plate 7 is in a "U"-shaped structure and both ends are provided with through grooves that communicate with each other inside and outside, and baffles 11 that are rotatably matched with the two through grooves are installed in both through grooves, and one end of the two baffles 11 is located in the mounting plate 7 and the spacing is less than the diameter of the steel wire rope 5, and one end of each baffle 11 located in the mounting plate 7 is installed with a device for keeping the partition 4 in a horizontal state In this embodiment, the wire mesh rope 5 can freely enter and exit the mounting plate 7 through two rotatable baffles 11, so that after the wire mesh rope 5 is inserted into several mounting plates 7, the stability and tensile strength between the several slots 1 can be increased to cope with the shock wave generated by a stronger explosion. At the same time, after the wire mesh rope 5 is removed from the mounting plate 7, the damaged part of the slot 1 can be replaced, or the device can be disassembled for transportation and placement, etc., wherein the spring 14 can keep the baffle 11 in a horizontal state (with Figure 1 The position of the middle tank body 1 is a reference for orientation, not an absolute horizontal state), thereby ensuring the sealing effect of the baffle 11 on the mounting plate 7 and the initial limit of the wire mesh rope 5; Figure 1 As shown, the four connecting seats at the top of the tank body 1 and the four connecting seats at the bottom of the tank body 1 are symmetrically distributed up and down. Figure 5 , Figure 6 and Figure 7 As shown, the through slot has no upper slot wall and a rotating shaft 13 is fixed inside, both ends of the rotating shaft 13 are fixed on the slot wall of the through slot, the other end of the baffle 11 is sleeved on the rotating shaft 13 and is rotatably matched therewith, one end of the spring 14 is fixed to the bottom of the baffle 11, and the other end is fixed to the inner side wall of the lower end of the mounting plate 7, and when the spring 14 is in a stationary state, the baffle 11 is in a horizontal state;
[0034] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7, both ends of the mounting plate 7 are equipped with stoppers 12, the width of the stopper 12 is the same as that of the stopper 11 and is arranged on the top of the end of the stopper 11 located inside the mounting plate 7, one end of the stopper 12 is hinged to the mounting plate 7, and the other end is plugged with the mounting plate 7 through the connecting block 16. In this embodiment, the mounting plate 7 is hinged to the mounting plate 7 at one end and plugged with the mounting plate 7 at the other end, so that when the connecting block 16 is plugged into the mounting plate 7 (here, the upper connecting seat is taken as an example), the end of the stopper 12 located inside the mounting plate 7 can only rotate downward and block The end of the stopper 12 is rotated upward, so that the wire mesh rope 5 can be easily inserted into the mounting plate 7 to connect the wire mesh rope 5 with all the tank bodies 1, and the wire mesh rope 5 can be prevented from being separated from the mounting plate 7 when the device is subjected to a shock wave, thereby ensuring that the wire mesh rope 5 and the tank body 1 are always connected together. At the same time, the present embodiment can also release the restriction on the baffle 11 after rotating the stopper 12 so that the stopper 12 is not above the baffle 11, so that the wire mesh rope 5 can be directly pulled out of the mounting plate 7, thereby releasing the connection between the wire mesh rope 5 and the buffer wall; Figure 5 Take the position as an example, combined with Figure 6 and Figure 7 The front side wall of the stopper 12 is hinged to the front side wall of the mounting plate 7 by a hinge 17, and a jack for inserting and locking the connecting block 16 is provided on the inner side wall of the upper end of the mounting plate 7, so that the stopper 12 can rotate up to 180 degrees, and the restriction on the baffle 11 is also released after rotating 180 degrees;
[0035] The mounting plate 7, baffle plate 11, rotating shaft 13, spring 14, block 12, connecting block 16 and hinge 17 in this embodiment constitute as a whole the connecting seat for connecting the wire mesh rope 5, wherein the block 12, connecting block 16 and hinge 17 constitute as a whole the adjusting component for controlling the rotation direction of the baffle plate 11. In actual application, a torsion spring can be used instead of the spring 14, and the torsion spring is mounted on the rotating shaft 13, one end of the torsion spring is fixed to the baffle plate 11, and the other end is fixed to the through groove wall of the mounting plate 7.
[0036] In the first step of the present embodiment, when used in a conventional manner, a suitable number of trough bodies 1 are detachably connected to form a buffer wall by inserting the plug block 2 of one trough body 1 upward into the slot 10 of another trough body 1 according to the blasting scene and power. In the second step, a steel wire rope 5 is first clamped in the mounting plate 7 at the bottom of each trough body 1, and then a partition 4, a sandbag 9, a partition 4, a water bag 8 and a partition 4 are sequentially placed in each trough body 1. In the third step, another steel wire rope 5 is clamped in the mounting plate 7 at the top of each trough body 1. In the fourth step, different The arrangement and fixing method is as follows: the device is placed upright as a whole in a pit or tunnel, and the movable parts of the two wire mesh ropes 5 are pulled by anchor rods or the buffer wall as a whole is clamped; the second is that after blasting, when part of the tank body 1 is damaged, the block 12 on the mounting plate 7 is first rotated 180 degrees, and the block 12 of the damaged part and its surroundings is operated in this way, and then the wire mesh rope 5 is pulled out, and then the damaged part of the tank body 1 is pulled out upward and replaced with a new one. Since the wire mesh rope 5 is ductile, although it is not completely separated, the operation of replacing the tank body 1 can still be performed.
[0037] Example 2
[0038] This embodiment further illustrates the technology. A "C"-shaped holder 15 is fixed to the inner bottom of the mounting plate 7 and is used to clamp the wire mesh rope 5. Figure 1 , Figure 5 and Figure 7 As shown, the steel mesh rope 5 entering the mounting plate 7 is clamped by the clamping seat 15, so that the steel mesh rope 5 is tightly connected to the mounting plate 7, further improving the connection stability between the steel mesh rope 5 and all the trough bodies 1.
Claims
1. A protective structure for reducing blast shock waves, comprising a buffer wall, characterized in that: The buffer wall is composed of a plurality of trough bodies (1) connected to each other up and down, the plurality of trough bodies (1) are detachably connected together in a grid shape, three partitions (4) are installed inside each trough body (1) and are slidably matched with the trough body (1) and are distributed up and down, sandbags (9) and water bags (8) are placed below and above the middle partition (4), respectively, and grid-shaped steel wire ropes (5) are arranged above and below the buffer wall, and rectangularly distributed connection seats for connecting the steel wire ropes (5) are fixed to the four surfaces at the top and the four surfaces at the bottom of each trough body (1). The connecting seat comprises a U-shaped mounting plate (7), both ends of the mounting plate (7) are provided with through grooves communicating with each other, baffles (11) are installed in the two through grooves and are rotatably matched with the baffles, one end of the two baffles (11) is located in the mounting plate (7) and the spacing is smaller than the diameter of the wire mesh rope (5), one end of each baffle (11) located in the mounting plate (7) is installed with a spring (14) for keeping the partition (4) in a horizontal state, and both ends of the mounting plate (7) are installed with adjustment components for controlling the rotation direction of the baffles (11).
2. The protective structure for reducing explosion shock waves according to claim 1, characterized in that: Two inserting blocks (2) are fixed on two of the outer side walls of the trough body (1), and two slots (10) for the inserting blocks (2) to be inserted upward and locked are provided on the other two outer side walls.
3. The protective structure for reducing explosion shock waves according to claim 2, characterized in that: The insert block (2) is a dovetail structure, and the slot (10) is a dovetail slot without a lower slot wall.
4. The protective structure for reducing explosion shock waves according to claim 2, characterized in that: A limiting block (3) is fixed on the side wall of the partition (4), and a limiting groove (6) without an upper groove wall is correspondingly opened on the inner wall of each groove body (1), and the limiting block (3) is located in the corresponding limiting groove (6) and is slidably matched with the limiting groove (6) up and down.
5. The protective structure for reducing explosion shock waves according to claim 4, characterized in that: The limiting groove (6) is provided on the side wall of the groove body (1) on which the insert block (2) is fixed.
6. The protective structure for reducing explosion shock waves according to claim 1 or 2, characterized in that: The four connecting seats at the top of the tank body (1) and the four connecting seats at the bottom of the tank body (1) are symmetrically distributed up and down.
7. The protective structure for reducing explosion shock waves according to claim 6, characterized in that: The through slot has no upper slot wall and a rotating shaft (13) is fixed inside the through slot. The other end of the baffle (11) is sleeved on the rotating shaft (13) and is rotatably matched therewith.
8. The protective structure for reducing explosion shock waves according to claim 7, characterized in that: The adjustment assembly comprises a stopper (12), the width of the stopper (12) being the same as that of the baffle (11) and being arranged at the top of one end of the baffle (11) located inside the mounting plate (7), one end of the stopper (12) being hinged to the mounting plate (7), and the other end being plug-fitted to the mounting plate (7) via a connecting block (16).
9. The protective structure for reducing explosion shock waves according to claim 8, characterized in that: A clamping seat (15) having a "C"-shaped structure and used for clamping the wire mesh rope (5) is fixed to the inner bottom of the mounting plate (7).