CN219640819U - Flying stone blocking device for tunnel portal blasting - Google Patents
Flying stone blocking device for tunnel portal blasting Download PDFInfo
- Publication number
- CN219640819U CN219640819U CN202320442235.0U CN202320442235U CN219640819U CN 219640819 U CN219640819 U CN 219640819U CN 202320442235 U CN202320442235 U CN 202320442235U CN 219640819 U CN219640819 U CN 219640819U
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- Prior art keywords
- bottom plate
- blocking
- frame
- blasting
- piece
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 62
- 238000005422 blasting Methods 0.000 title claims abstract description 33
- 239000004575 stone Substances 0.000 title claims abstract description 17
- 230000001965 increasing effect Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 6
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to the field of blasting protection devices, and particularly relates to a flystone blocking device for blasting tunnel openings. The technique includes the bottom plate, the bottom plate top is fixed with the block frame of cuboid frame form, blocks the frame and comprises a plurality of first dead levers of vertical setting, a plurality of second dead levers of perpendicular to bottom plate leading flank and the third dead lever that a plurality of levels set up, blocks the frame right side and is provided with the piece that blocks that is used for blockking the flying stone, blocks the right-hand member of piece suit at the third dead lever, and the right-hand member of third dead lever is vertical wears to be equipped with spacing subassembly, and the balancing weight that is used for increasing bottom plate overall stability is placed at the top of bottom plate. According to the utility model, the blocking frame with the cuboid structure is placed in front of the tunnel portal, and the periphery of the blocking piece is fixed with the blocking frame, so that the blocking area is prevented from being reduced due to the fact that the blocking piece is folded towards the middle after being impacted, and meanwhile, the integral impact strength of the device is improved by placing the balancing weight on the bottom plate.
Description
Technical Field
The utility model belongs to the field of blasting protection devices, and particularly relates to a flystone blocking device for blasting tunnel openings.
Background
Blasting is a technique which utilizes the compression, loosening, destruction, throwing and killing actions of explosives in air, water, earth and stone media or objects to achieve the expected purpose. The tunnel is a key and critical project for construction of highways, railways and the like, and the tunnel excavation method is rapidly developed along with development of railway construction and progress of technology, and the more common excavation methods include a drilling and blasting method, a shield method and a heading machine method. The drilling and blasting method has strong adaptability to geological conditions and low excavation cost, and is particularly suitable for construction of hard rock tunnels, broken rock tunnels and a large number of short tunnels. In the mountain tunnel tunneling construction of China, the traditional drilling and blasting method is adopted, namely, rock is excavated by drilling, charging and blasting, the mountain tunnel portal is positioned at the mountain waist, the rock is hard, the flight distance of blasting flyrock is more flat and farther due to the influence of the action of force and the terrain in the blasting excavation process, and great safety threat is brought to personnel and structures in front of an operation point.
At present, the safety protection of tunnel portal blasting generally adopts a far blasting safety distance, so that sputtered flying stones cannot cause injury to constructors, but surrounding equipment cannot be effectively protected, and meanwhile, the surrounding equipment cannot arrive at the site for the first time once accidents occur; secondly, adopt to hang at the entrance to a cave top and put protection network, big gun quilt etc. and make big gun hole or big gun position the place ahead covered to reduce the shock wave and the splash that blasting produced, convenient operation, construction are simple like this, but because only one side is fixed, can draw in to the centre after the protection network receives the impact, make the protection area reduce, just so that there is inevitably a small amount of flying stone to splash out this moment, thereby causes the harm to equipment and constructor.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the utility model are as follows: the flyrock blocking device for tunnel portal blasting can effectively block flyrock generated by blasting.
A flystone blocking device for tunnel portal blasting, bottom plate including the level setting, the top of bottom plate is fixed with the block frame of cuboid frame form, blocks the frame and comprises the first dead lever of a plurality of vertical settings, the second dead lever of a plurality of perpendicular to bottom plate leading flank and the third dead lever that a plurality of levels set up, blocks the frame right side and is provided with the piece that blocks that is used for blockking the flystone, blocks the piece suit at the right-hand member of third dead lever, the right-hand member of third dead lever is vertical wears to be equipped with and is used for placing the spacing subassembly that blocks the piece roll-off right, the balancing weight that is used for increasing bottom plate overall stability is placed at the top of bottom plate.
Further, the left side of blocking the frame is provided with the first strengthening rib that is used for strengthening its stability, is fixed with the second strengthening rib in the slope between two adjacent third dead levers.
Further, a fixing sleeve for inserting and fixing the first fixing rod is fixed to the top of the bottom plate.
Further, the blocking piece is a gun quilt.
Further, the balancing weight is a sand bag.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the blocking frame with the cuboid structure is placed in front of the tunnel portal, and the periphery of the blocking piece is fixed with the blocking frame, so that the blocking area is prevented from being reduced due to the fact that the blocking piece is folded towards the middle after being impacted, and meanwhile, the integral impact strength of the device is improved by placing the balancing weight on the bottom plate.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a right side view of the barrier frame of FIG. 1;
the names of the components in the figure are as follows: 1. the device comprises a first reinforcing rib 2, a first fixing rod 3, a second fixing rod 4, a third fixing rod 5, a limiting component 6, a blocking piece 7, a second reinforcing rib 8, a fixing sleeve 9, a bottom plate 10 and a balancing weight.
Description of the embodiments
The present utility model is further illustrated by the following examples, which are not intended to be limiting, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Examples
The flyrock blocking device for blasting tunnel openings comprises a bottom plate 9 which is horizontally arranged, and the device can be integrally moved to the tunnel openings by utilizing a plurality of steel pipes through the bottom plate 9, so that the flyrock blocking device is convenient to use for multiple times, and the device is prevented from being reassembled when being used each time;
the upper part of the bottom plate 9 is fixedly provided with a cuboid frame-shaped blocking frame, the blocking frame consists of a plurality of first fixing rods 2 which are vertically arranged, a plurality of second fixing rods 3 which are perpendicular to the front side surface of the bottom plate 9 and a plurality of third fixing rods 4 which are horizontally arranged, the blocking frame is built into a plurality of cuboid frames through the plurality of first fixing rods 2, the second fixing rods 3 and the third fixing rods 4, a large cuboid frame is formed, the first fixing rods 2 are fixed at the top of the bottom plate 9, and the first fixing rods 2, the second fixing rods 3 and the third fixing rods 4 are all steel pipes, so that the blocking frame has the advantages of convenience in construction, high reliability and the like; in this embodiment, four first fixing rods 2, six second fixing rods 3 and eight third fixing rods 4 are built into a cuboid structure (two adjacent small cuboids) as shown in fig. 1 and 4, and the intersection of the two fixing rods is fixed by a steel pipe scaffold fastener, such as the building of an outer wall scaffold, wherein the building mode is the mature prior art; in practical application, a certain number of first fixing rods 2, second fixing rods 3 and third fixing rods 4 can be added according to the size of the hole and the expected power generated by blasting, so that flying stones generated by blasting can be fully blocked;
the right side of the blocking frame is provided with a blocking piece 6 for blocking flying stones, the blocking piece 6 is sleeved at the right end of the third fixed rod 4, the right end of the third fixed rod 4 is vertically penetrated with a limiting component 5 for placing the blocking piece 6 to slide out rightwards, in practical application, the blocking frame and the blocking piece 6 are integrally positioned in front of a tunnel portal, flying stones generated by blasting are fully blocked on the blocking piece 6 and can only splash from four directions, namely, up, down, left and right, so that constructors and equipment behind the device are protected;
as shown in fig. 2 and 3, the left side wall of the blocking piece 6 is provided with eight mounting holes which are left and right communicated, the positions of the mounting holes correspond to the positions of the third fixing rods 4, the blocking piece 6 is sleeved on the third fixing rods 4 through the mounting holes, one end of the third fixing rods 4, which are positioned on the right side of the blocking piece 6, is vertically provided with threaded holes which are vertically communicated with each other, the limiting component 5 is a flying screw, the blocking piece 6 cannot slide out rightwards by screwing the flying screw into the threaded holes, and flying stones generated during blasting are mainly concentrated in the middle of the blocking piece 6, if the periphery of the blocking piece 6 is not fixed, the periphery of the blocking piece 6 can slide out of the third fixing rods 4 and approaches towards the middle after being impacted, so that flying stones at the edge cannot be blocked by the blocking piece 6; the two third fixing rods 4 at the middle part of the upper end and the middle part of the lower end of the first fixing rod 2 are used for fixing the two first fixing rods 2 and fixing the middle parts of the upper end and the lower end of the blocking piece 6, so that the blocking piece 6 is further prevented from approaching to the middle part after being impacted;
the balancing weight 10 for increasing the overall stability of the bottom plate 9 is placed at the top of the bottom plate 9, the mass of the bottom plate 9 is increased through the balancing weight 10, the overall gravity center of the device is reduced, and therefore the blocking piece 6 is prevented from falling down after being impacted greatly, and flying stones cannot be intercepted.
When the tunnel portal blasting is used, the blocking frame is built to be of a cuboid structure through the steel pipe scaffold fastener at a proper position in front of the tunnel portal, then the mounting holes of the blocking piece 6 are sleeved on the corresponding third fixing rod 4, then the ring screw is screwed into the threaded hole of the third fixing rod 4, so that the blocking piece 6 cannot slide out rightwards, and finally the balancing weight 10 is placed on the top of the bottom plate 9 to wait for blasting; when the device is reused, the device is transported to the hole through a crane or a plurality of steel pipes, the construction time is saved, the device can enter a tunnel after the whole volume is reduced, and flying stones generated by blasting in the tunnel are blocked
Examples
The technology is further described in this embodiment, a first reinforcing rib 1 for enhancing the stability of the blocking frame is disposed on the left side of the blocking frame, a second reinforcing rib 7 is obliquely fixed between two adjacent third fixing rods 4, the blocking piece 6 is impacted after blasting, and then a tensile force is generated on the blocking frame, and the tensile strength of the first fixing rod 2, the second fixing rod 3 and the third fixing rod 4 can be enhanced through the first reinforcing rib 1 and the second reinforcing rib 7, so that the overall stability of the blocking frame is enhanced, and deformation and even falling apart after the impact again are prevented; the first strengthening rib 1 has two, is located the left side of two first dead levers 2 in left side respectively, and the upper end of first strengthening rib 1 is fixed with the upper end of left side first dead lever 2 through the steel pipe scaffold fastener, and as shown in fig. 1, the left end of the third dead lever 4 of lower extreme extends left to through the vertical fixed connection steel pipe of steel pipe scaffold fastener, the lower extreme of connecting the steel pipe is fixed at the top of bottom plate 9, and the upper end of connecting the steel pipe is also fixed through the steel pipe scaffold fastener with the lower extreme of first strengthening rib 1.
Examples
The technology will be further described in this embodiment, the top of the bottom plate 9 is fixed with a fixing sleeve 8 for inserting the first fixing rod 2, the lower end of the first fixing rod 2 is inserted into the fixing sleeve 8 and is fixed by a bolt, so that the first fixing rod 2 and the bottom plate 9 can be conveniently installed and separated, as shown in fig. 1, 2 and 4, the front side wall and the rear side wall of the fixing sleeve 8 are provided with installation through holes for the bolts to pass through, and the lower end of the first fixing rod 2 is also provided with installation through holes for the bolts to pass through.
Examples
The technology is further described in this embodiment, the blocking piece 6 is a gun cover, and the gun cover is woven by waste tires, so that the gun cover has high strength, elasticity and toughness, is not easy to break, can be repeatedly used, has a certain weight, is not easy to be thrown up by explosion and air waves, can also adopt high-toughness rubber in practical application, and is more wear-resistant and durable.
Examples
This embodiment will be further explained the technique, balancing weight 10 is the sand bag, presses on bottom plate 9 through the sand bag, makes the holistic stability of device obtain promoting, and the sand bag can also block the unable part that blocks the flying stone of piece 6 below moreover, prevents that the flying stone from passing from blocking piece 6 below, simultaneously compares local material and places the stone on bottom plate 9, and the sand bag can not roll, receives and can not remove by a wide margin after the impact.
Claims (5)
1. A flystone blocking device for tunnel portal blasting, includes bottom plate (9) of level setting, its characterized in that: the top of bottom plate (9) is fixed with the block frame of cuboid frame form, block the frame and constitute by first dead lever (2) of a plurality of vertical settings, a plurality of second dead lever (3) of perpendicular to bottom plate (9) leading flank and a plurality of third dead lever (4) that the level set up, block frame right side and be provided with the piece (6) that blocks that are used for blockking the flying stone, block the right-hand member at third dead lever (4) of piece (6) suit, the vertical wearing of right-hand member of third dead lever (4) is equipped with limiting component (5) that are used for placing and block piece (6) roll-off right, balancing weight (10) that are used for increasing bottom plate (9) overall stability are placed at the top of bottom plate (9).
2. A flyrock blocking device for tunnel portal blasting according to claim 1, wherein: the left side of the blocking frame is provided with a first reinforcing rib (1) for enhancing the stability of the blocking frame, and a second reinforcing rib (7) is obliquely fixed between two adjacent third fixing rods (4).
3. A flyrock blocking device for tunnel portal blasting according to claim 2, wherein: the top of the bottom plate (9) is fixed with a fixing sleeve (8) for inserting and fixing the first fixing rod (2).
4. A flyrock blocking device for tunnel portal blasting according to claim 1, wherein: the blocking piece (6) is a firecracker quilt.
5. A flyrock blocking device for tunnel portal blasting as claimed in claim 4, wherein: the balancing weight (10) is a sand bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320442235.0U CN219640819U (en) | 2023-03-10 | 2023-03-10 | Flying stone blocking device for tunnel portal blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320442235.0U CN219640819U (en) | 2023-03-10 | 2023-03-10 | Flying stone blocking device for tunnel portal blasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219640819U true CN219640819U (en) | 2023-09-05 |
Family
ID=87812048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320442235.0U Active CN219640819U (en) | 2023-03-10 | 2023-03-10 | Flying stone blocking device for tunnel portal blasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219640819U (en) |
-
2023
- 2023-03-10 CN CN202320442235.0U patent/CN219640819U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |