CN215003268U - Safety protection curtain for tunnel blasting flyrock and shock wave control - Google Patents
Safety protection curtain for tunnel blasting flyrock and shock wave control Download PDFInfo
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- CN215003268U CN215003268U CN202121225401.9U CN202121225401U CN215003268U CN 215003268 U CN215003268 U CN 215003268U CN 202121225401 U CN202121225401 U CN 202121225401U CN 215003268 U CN215003268 U CN 215003268U
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Abstract
The utility model relates to the field of building engineering, and discloses a safety protection curtain for tunnel blasting flyrock and shock wave control, which comprises a base and an upper frame with an arc structure, wherein the arc structure of the upper frame is attached to the top of a tunnel; the quantity of base is two, all installs vertical support bar on every base, and two vertical support bar's top is located to the roof-rack mount, and the lateral wall of roof-rack is fixed with a plurality of couples that set up along roof-rack length direction, has hung the protecting strip on the couple, and the bottom of protecting strip is located the position that is close to the tunnel bottom surface. The utility model adopts the arc top frame to hang the protective strip, the flyrock and the shock wave are blocked by the protective curtain formed by the protective strip or are decelerated, the high-pressure gas and the shock wave generated after the explosive in the tunnel explodes are effectively reduced and weakened, and the flying rock flying out is reduced; and the roof-rack is the arc structure that suits with the tunnel top, guarantees roof-rack and tunnel top laminating, has avoidd the easy problem of flying stone from tunnel top clearance departure when adopting the straight-bar to hang and establish the protective strip.
Description
Technical Field
The utility model relates to a building engineering field, concretely relates to safety protection curtain that is used for tunnel blasting flyrock and shock wave control.
Background
In order to prevent the explosion in the hole and the over-far of individual flying stones and weaken the intensity of shock waves, the middle pilot hole and the main hole are 100 meters in front of the hole, fixed anchor rods are embedded into the high position of the hole opening to hang flexible protective curtains, a self-made drilling platform frame vehicle is placed to block, and a detachable movable protective curtain is formed in the three-dimensional space.
In the actual construction process, the protective curtain is formed by splicing and fixing strip-shaped rubber pads (or waste conveying belts) on a steel pipe, is shaped like a curtain, and is fixed by a lifting steel wire rope of the excavator before explosion. But the protective effect of current protection curtain is poor, and the tunnel top is the arc structure, and the protection curtain can't cover the tunnel cross-section completely, and flying stone flies out from protection curtain and tunnel clearance easily, has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
Based on the problems, the utility model provides a safety protection curtain for tunnel blasting flyrock and shock wave control adopts the arc roof-rack to hang and establishes the protection strip, and flyrock and shock wave are kept off or are slowed down by the protection curtain that the protection strip formed, effectively arrange and weaken the tunnel in the explosive explosion after produce high-pressure gas, shock wave, and reduce the flyrock departure; and the roof-rack is the arc structure that suits with the tunnel top, guarantees roof-rack and tunnel top laminating, has avoidd the easy problem of flying stone from tunnel top clearance departure when adopting the straight-bar to hang and establish the protective strip.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a safety protection curtain for tunnel blasting flyrock and shock wave control comprises a base and a top frame with an arc structure, wherein the arc structure of the top frame is attached to the top of a tunnel; the quantity of base is two, all installs vertical support bar on every base, and two vertical support bar's top is located to the roof-rack mount, and the lateral wall of roof-rack is fixed with a plurality of couples that set up along roof-rack length direction, has hung the protecting strip on the couple, and the bottom of protecting strip is located the position that is close to the tunnel bottom surface.
Furthermore, the tops of the two vertical supporting rods are respectively fixed with a first U-shaped groove, the top frame is clamped in the first U-shaped grooves, the side walls of the first U-shaped grooves are provided with first tightening bolts through screw holes, and the top frame is fixed in the first U-shaped grooves through the first tightening bolts.
Furthermore, the side wall of the first U-shaped groove is provided with a plurality of screw holes matched with the first tightening bolts.
Furthermore, the device also comprises a connecting rod for connecting the two vertical supporting rods, and two ends of the connecting rod are vertically and fixedly connected with the two vertical supporting rods.
Furthermore, two ends of the connecting rod are respectively fixed with a second U-shaped groove, the second U-shaped grooves are respectively clamped on the two vertical supporting rods, and the two second U-shaped grooves fix the connecting rod between the vertical supporting rods through tightening a second bolt.
Further, the quantity of connecting rod is a plurality of, and a plurality of connecting rod both ends are all fixed on vertical support pole.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model adopts the arc top frame to hang the protective strip, the flyrock and the shock wave are blocked by the protective curtain formed by the protective strip or are decelerated, the high-pressure gas and the shock wave generated after the explosive in the tunnel explodes are effectively reduced and weakened, and the flying rock flying out is reduced; and the roof-rack is the arc structure that suits with the tunnel top, guarantees roof-rack and tunnel top laminating, has avoidd the easy problem of flying stone from tunnel top clearance departure when adopting the straight-bar to hang and establish the protective strip.
Drawings
FIG. 1 is a schematic view of a connection structure of a top frame and a guard bar in the embodiment;
FIG. 2 is a view showing an installation structure of a base, a vertical support frame and a top frame in the embodiment;
FIG. 3 is an enlarged schematic view of detail A of FIG. 2;
FIG. 4 is a schematic structural view of the safety protection curtain facing the inside of the tunnel in the embodiment
Wherein: 1. a base; 2. a top frame; 3. a vertical support bar; 4. hooking; 5. a protective strip; 6. a first U-shaped groove; 7. screwing the first bolt; 8. a connecting rod; 9. a U-shaped groove II; 10. and screwing the second bolt.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example (b):
referring to fig. 1-4, a safety protection curtain for tunnel blasting flyrock and shock wave control comprises a base 1 and an upper frame 2 with an arc structure, wherein the arc structure of the upper frame 2 is attached to the top of a tunnel; the quantity of base 1 is two, all installs vertical support pole 3 on every base 1, and the top of two vertical support pole 3 is located to roof-rack 2 fixed mounting, and the lateral wall of roof-rack 2 is fixed with a plurality of couples 4 that set up along 2 length direction of roof-rack, has hung protection strip 5 on couple 4, and the bottom of protection strip 5 is located the position that is close to the tunnel bottom surface.
In the embodiment, when blasting is needed in the tunnel excavation process, the base 1 is fixed on the tunnel ground, and then the base 1 is pressed by a sand bag or a stone block for fixing; then the protective strips 5 are sequentially hung on the hooks 4 to form a protective curtain structure; in the blasting process, flyrock and shock waves are blocked or decelerated by a protective curtain formed by the protective strips 5, high-pressure gas and shock waves generated after the explosive in the tunnel is exploded are effectively reduced and weakened, and flying of flyrock is reduced; and roof-rack 2 is the arc structure that suits with the tunnel top, guarantees roof-rack 2 and tunnel top laminating, has avoidd the problem that the flyrock was easy to follow tunnel top clearance departure when adopting the straight-bar to hang and establishing protective strip 5.
The protective strip 5 in this embodiment may be a rubber strip or a strip cut from a waste conveyor belt or the like. The tunnel ground position corresponding to the base 1 mounting point should be guaranteed to be level, and sand bags, soil bodies or broken stones and the like can be adopted for leveling.
The top of two vertical support rods 3 all is fixed with U type groove one 6, and the roof-rack 2 card is located in two U type groove one 6, and the lateral wall in U type groove one 6 is provided with screws up bolt one 7 through the screw, and roof-rack 2 is fixed in two U type groove one 6 through screwing up bolt one 7. The top frame 2 and the vertical supporting rod 3 are detachably connected through a U-shaped groove I6 and a tightening bolt I7, so that the protection device can be conveniently stored and transported before blasting; when the device is used, the top frame 2 is only required to be installed in the U-shaped groove, and then the first bolt 7 is screwed in and tightened, so that the device is convenient and rapid to install; and meanwhile, the disassembly process is relatively convenient. In this embodiment, the side wall of the first U-shaped groove 6 is provided with a plurality of screw holes matched with the first tightening bolts 7. The adjustment of the fixed position of the first 7 tightening bolt can be carried out according to different sizes of the top frame 2, so that the top frame 2 can be fixed better, and the whole structure stability of the protection device is guaranteed.
Still including the connecting rod 8 of connecting two vertical support rods 3, two ends and the perpendicular fixed connection of two vertical support rods 3 of connecting rod 8. A connecting rod 8 is further fixed between the two vertical supporting rods 3 in the embodiment, so that the overall stability of the protective curtain is further ensured; when the connecting rod 8 is located the protection strip 5 and faces away from the tunnel direction, the connecting rod 8 can play a role in blocking the protection strip 5, and the problem that the protection strip 5 is easily opened under impact is avoided.
Two ends of the connecting rod 8 are respectively fixed with a U-shaped groove II 9, the U-shaped grooves II 9 are respectively clamped on the two vertical supporting rods 3, the connecting rod 8 is fixed between the vertical supporting rods 3 by the two U-shaped grooves II 9 through tightening a bolt II 10, the connecting rod 8 can be detachably connected with the two vertical supporting rods 3, and the disassembly and the assembly are convenient; and the height of the U-shaped groove II 9 on the vertical supporting rod 3 can be adjusted by screwing or unscrewing the screwing bolt II 10, so that the fixed height of the connecting rod 8 can be adjusted.
The number of the connecting rods 8 is multiple, and two ends of the connecting rods 8 are fixed on the vertical supporting rod 3; the condition that the connecting rod quantity is two has been given in this embodiment, and vertical support rod 3's middle and upper, respectively one root down during the use is applicable to the big section tunnel entrance to a cave of excavation net height more than 6 meters, has better protective effect.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a safety protection curtain that is used for tunnel blasting flyrock and shock wave to control which characterized in that: the tunnel roof structure comprises a base (1) and a roof frame (2) with an arc-shaped structure, wherein the arc-shaped structure of the roof frame (2) is attached to the top of the tunnel; the quantity of base (1) is two, every all install vertical support pole (3) on base (1), the top of two vertical support pole (3) is located to roof-rack (2) fixed frame, the lateral wall of roof-rack (2) is fixed with along a plurality of couples (4) that roof-rack (2) length direction set up, it has protection strip (5) to hang on couple (4), and the bottom of protection strip (5) is located the position that is close to the tunnel bottom surface.
2. The safety curtain of claim 1, wherein the safety curtain comprises at least one of: two the top of vertical support pole (3) all is fixed with U type groove one (6), roof-rack (2) card is located in two U type groove one (6), the lateral wall of U type groove one (6) is provided with screws up bolt one (7) through the screw, roof-rack (2) are fixed in two U type groove one (6) through screwing up bolt one (7).
3. The safety curtain of claim 2, wherein the safety curtain comprises: and the side wall of the first U-shaped groove (6) is provided with a plurality of screw holes matched with the first tightening bolts (7).
4. The safety curtain of claim 1, wherein the safety curtain comprises at least one of: the support is characterized by further comprising a connecting rod (8) for connecting the two vertical supporting rods (3), wherein two ends of the connecting rod (8) are fixedly connected with the two vertical supporting rods (3) in a perpendicular mode.
5. The safety curtain of claim 4, wherein the safety curtain comprises at least one of: two ends of connecting rod (8) all are fixed with U type groove two (9), on two vertical support pole (3) were located to U type groove two (9) card respectively, two U type groove two (9) are fixed connecting rod (8) between vertical support pole (3) through screwing up bolt two (10).
6. A safety curtain according to claim 4 or 5, wherein the safety curtain is used for tunnel blasting flyrock and shock wave control, and is characterized in that: the number of connecting rods (8) is a plurality of, and is a plurality of connecting rods (8) both ends are all fixed on vertical support rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225401.9U CN215003268U (en) | 2021-06-02 | 2021-06-02 | Safety protection curtain for tunnel blasting flyrock and shock wave control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225401.9U CN215003268U (en) | 2021-06-02 | 2021-06-02 | Safety protection curtain for tunnel blasting flyrock and shock wave control |
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| Publication Number | Publication Date |
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| CN215003268U true CN215003268U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121225401.9U Active CN215003268U (en) | 2021-06-02 | 2021-06-02 | Safety protection curtain for tunnel blasting flyrock and shock wave control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320339A (en) * | 2021-12-20 | 2022-04-12 | 攀钢集团工程技术有限公司 | Buffering damping device for preventing blasting damage of tunnel portal |
-
2021
- 2021-06-02 CN CN202121225401.9U patent/CN215003268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320339A (en) * | 2021-12-20 | 2022-04-12 | 攀钢集团工程技术有限公司 | Buffering damping device for preventing blasting damage of tunnel portal |
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