CN210892889U - Multifunctional portal protection device for tunnel portal blasting excavation - Google Patents
Multifunctional portal protection device for tunnel portal blasting excavation Download PDFInfo
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- CN210892889U CN210892889U CN201921561884.2U CN201921561884U CN210892889U CN 210892889 U CN210892889 U CN 210892889U CN 201921561884 U CN201921561884 U CN 201921561884U CN 210892889 U CN210892889 U CN 210892889U
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Abstract
The utility model provides a tunnel portal blasting excavation is with multi-functional portal protector relates to a tunnel portal blasting protector. The problems that in the prior art, the protection bent frame is repeatedly erected and disassembled, time and labor are wasted, and the like are solved, and the working efficiency and the safety of a blasting operation site are improved. This tunnel portal blasting excavation is with multi-functional portal protector, including hard and soft combination wall system, explosion-proof roller shutter door system, spraying system and auxiliary system. The utility model has the advantages of the coefficient of elasticity of hard and soft combination wall is high, and the light transmissivity is good, and fatigue resistance is high, satisfies demands such as anti flyrock impact, release stress ripples, daylighting are firm. Tunnel portal blasting excavation can tentatively offset flying stone kinetic energy with multi-functional portal protector front layer wire net, and the flying stone of diameter below the mesh can be intercepted to middle level PC endurance board, and the back layer wire net can provide the cushion effect for middle level PC board, and shaped steel skeleton and sloping leg structure can provide the holding power for the combination wall, have strengthened overall structure's fastness.
Description
Technical Field
The utility model belongs to the technical field of the tunnel construction, a tunnel blasting protector, especially a tunnel entrance to a cave blasting protector are related to.
Background
With the rapid development of urban construction and the large-scale planning of traffic routes in China, the number of highway tunnels is increased year by year, and the problem of blasting protection of tunnel construction sections is increasingly prominent. Tunnel excavation is generally carried out in a section with a complex mountain surrounding rock structure by adopting a drilling and blasting method, and the problems of flying stones, dust, shock waves, noise and the like generated in the blasting operation process of a tunnel portal have strong side effects on the surrounding environment. In order to reduce the influence of blasting operation of the tunnel portal on construction sites, surrounding villages and other environments, it is particularly important to arrange a multifunctional blasting protection device on the front side of the tunnel portal.
At present, the simple bent frames made of moso bamboo chips or waste rubber and the like can only relieve blasting flyrock impact, and the problems of poor integral overturn resistance, inconvenience in passing and the like of the bent frames exist. The repeated erection and disassembly of the protection bent frame is time-consuming and labor-consuming, and the working efficiency of the blasting operation site is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art problem, provide a tunnel portal blasting excavation is with multi-functional portal protector, remedy and have simple and easy protector's not enough at present, realize releasing the shock wave, fall the dust fall of making an uproar, advantage functions such as current facility, antidumping, strong printing opacity.
The purpose of the utility model can be realized by the following technical proposal: a multifunctional portal protection device for blasting excavation of a tunnel portal comprises a rigid-flexible combined wall system, an explosion-proof rolling door system, a spraying system and an auxiliary system.
In some embodiments, the rigid-flexible composite wall system is formed by compounding a front steel wire mesh layer, a middle PC board layer, a rear steel wire mesh layer and a steel skeleton.
In some embodiments, the steel skeleton is made of 16# I-steel, and the front and rear steel meshes and the middle PC plate are fastened on the outer steel skeleton by welding or riveting.
In certain embodiments, the explosion-proof roller door system includes a lift activation switch, a stainless steel panel curtain sheet, and an impact-resistant PVC curtain adhered to the stainless steel panel curtain sheet.
In some embodiments, the PVC curtain is fixed on the stainless steel curtain sheet by rivets and can freely extend and retract with the stainless steel curtain sheet.
In certain embodiments, the auxiliary system includes a PC board combination sidewall, a concrete embedment, and a sprag leg.
In some embodiments, the PC board composite side wall includes a left side wall, a right side wall, and a top side wall, extending from the rigid and flexible composite wall to the front, forming a semi-enclosed sound barrier.
In certain embodiments, the spray system includes a high pressure water line, a manual switch, a branch water line, and a spray head; the branch water pipe is connected in series with the high-pressure water pipeline and fixed on the surface of the top side wall, the spray head is connected with the branch water pipe, the water amount is controlled by the manual switch to spray, and the water curtain hangs down from the upper part of the protective device.
Compared with the prior art, this tunnel blasting uses multi-functional entrance to a cave protector has following advantage:
the rigid-flexible combined wall is high in elastic coefficient, good in light transmission and high in fatigue resistance, and meets the requirements of flying stone impact resistance, stress wave release, stable lighting and the like. The front layer steel wire mesh can preliminarily offset flying stone potential energy, the middle layer PC endurance plate can intercept flying stones with diameters below meshes, the rear layer steel wire mesh can provide buffer force for the middle layer PC plate, the profile steel framework and the inclined leg structure can provide supporting force for the combined wall, and overall firmness is enhanced. PC board side wall has played noise reduction effect with hard and soft combination wall jointly, and water curtain spraying system has further perfected the dust fall attribute. The explosion-proof rolling door not only meets the requirements of resisting the impact of flying stones, but also meets the traffic requirements.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.
It will be understood by those of ordinary skill in the art that all directional references (e.g., above, below, upward, above, downward, below, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the figures to aid the reader's understanding, and do not imply (e.g., a limitation on position, orientation, or use, etc.) a limitation on the scope of the invention, which is defined by the claims appended hereto. Additionally, the term "substantially" may refer to slight imprecision or deviation in conditions, amounts, values, or dimensions, etc., some of which may be within manufacturing or tolerance limits.
FIG. 1 is a schematic size diagram of a steel skeleton of a multifunctional portal protection device for blasting excavation of a tunnel portal in an embodiment of the utility model;
fig. 2 is a schematic view of a rigid-flexible combined wall 'four-in-one' related to the multifunctional portal frame protection device for blasting excavation of a tunnel portal in the embodiment of the invention;
FIG. 3 is a left side view of the multifunctional portal frame protection device for blasting excavation of the tunnel portal in the embodiment of the utility model;
fig. 4 is the embodiment of the utility model provides a tunnel portal blasting excavation is with multi-functional portal protector elevation.
In the figure, 1, a steel skeleton; 2. the front layer of steel wire mesh; 3. a middle layer PC board; 2', a rear layer steel wire mesh; 4. the left side wall of the PC board; 5. a PC board right side wall; 6. a PC board top side wall; 5', a rigid frame; 7. concrete embedded parts; 8. inclined leg support; 9. a lifting device; 10. stainless steel rolling sheet; 10', a PVC curtain; 11. a lifting starting switch; 12. a high pressure water pipe; 13. a manual switch; 14. a branched water pipe; 15. and (4) a spray head.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The following embodiments do not limit the invention according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the solution of the invention.
Example one
As shown in fig. 1 and 2, the steel skeleton 1 is formed by welding and splicing a plurality of 16# I-beams and connecting plates, and belongs to a stable frame structure, the overall size is 14 × 9m, the sizes of the front layer steel wire mesh 2, the rear layer steel wire mesh 2 ' and the middle layer PC plate 3 are 14 × 9m, a door opening with the size of 6 × 4.5.5 m reserved at the lower corner meets the passing requirement, the diameters of the net openings of the steel wire mesh 2 and the steel wire mesh 2 ' are 4cm, the thickness of the PC plate is 5mm, the three-layer structure is fixed on the steel skeleton 1 in a welding and riveting mode to form a stable four-in-one rigid-flexible combined wall, the PVC curtain 10 ' is riveted on the stainless steel rolling sheet 10, and the rolling door 2 is fixed on the steel skeleton 1 through reinforcing bolts.
FIG. 3 is a side view of the multifunctional portal frame protection device for blasting excavation of a tunnel portal, wherein an inclined leg support 8, a profile steel framework 1 and a concrete embedded part 7 are mutually reinforced by welding; the PC board side wall 4, the PC board top side wall 6 and the steel skeleton 1 are hinged and reinforced, and the PC board side wall 4 is reinforced by a connecting plate and a concrete embedded part 7; a branch water pipe 14 of the spraying system is welded on the high-pressure water pipe 12, the branch water pipe 14 is bound on the upper surface of the PC board top side wall 6, and a spray head 15 is connected with the branch water pipe 14 through threads.
Fig. 4 is a front view of the multifunctional portal protection device for blasting and excavating tunnel portal, wherein the lifting device 9 is electrically controlled by a lifting starting switch 11, and the high-pressure water pipe 12 is used for controlling water quantity by a manual switch 13.
The invention also highlights various advantages in application, such as: the double-layer steel wire mesh, the transparent PC endurance plate and the profile steel framework can be combined to form a four-in-one rigid-flexible combined wall, so that the properties of flyrock impact resistance, shock wave release, strong lighting, overturn resistance and the like are provided; the anti-explosion rolling door can be reinforced at the reserved door opening of the combined wall, so that the anti-explosion effect is provided, and the passing efficiency is improved; auxiliary systems such as inclined leg supports, concrete embedded parts and PC board side walls can be fused on the rigid-flexible combined wall, so that the stability of a reinforced board is provided, and the three-way wrapped PC board side walls provide sound insulation and noise reduction properties; can set up spraying system's shower nozzle in the top side wall, avoid the striking of flying stone, spray the water curtain and hang down by the eminence and provide the attribute of big gun back dust fall, logical car dust fall.
Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention. The execution order of the operations, steps, and the like in the apparatuses, methods, and the like shown in the specification and the drawings can be realized in any order as long as the output of the preceding process is not used in the subsequent process, unless otherwise specified. The use of the description of "first," "next," and related words for convenience of description does not imply that the operations must be performed in this order.
The specific embodiments described herein are merely illustrative of the invention. Modifications to the described embodiments, as well as alternative arrangements, may be devised by those skilled in the art without departing from the spirit of the present invention or exceeding the scope of the appended claims.
Claims (8)
1. The utility model provides a tunnel portal blasting excavation is with multi-functional portal protector which characterized in that, includes rigid-flexible combination wall system, explosion-proof shutter door system and spraying system and auxiliary system.
2. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 1, wherein the rigid-flexible combined wall system is formed by compounding a front steel wire mesh layer, a middle PC board layer, a rear steel wire mesh layer and a steel skeleton.
3. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 2, wherein the steel framework is formed by splicing 16# I-steel, and the front layer steel wire mesh, the rear layer steel wire mesh and the middle layer PC plate are fastened on the steel framework in a welding or riveting mode.
4. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 1, wherein the explosion-proof rolling door system comprises a lifting starting switch, a stainless steel plate curtain sheet and an impact-proof PVC curtain sheet, and the PVC curtain sheet is attached to the stainless steel plate curtain sheet.
5. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 4, wherein the PVC curtain is fixed on the stainless steel curtain sheet through rivets and can freely lift along with the stainless steel curtain sheet.
6. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 2, wherein the auxiliary system comprises a PC plate combined side wall, a concrete embedded part and a diagonal bracing supporting leg.
7. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 6, wherein the PC board combined side wall comprises a left side wall, a right side wall and a top side wall, and the rigid and flexible combined wall extends to the front to form a semi-closed sound barrier.
8. The multifunctional portal frame protection device for blasting excavation of the tunnel portal according to claim 7, wherein the spraying system comprises a manual switch, a high-pressure water pipe, a branch water pipe and a spray head; the branch water pipe is connected with the high-pressure water pipe in a series connection mode and fixed on the surface of the top side wall, the spray head is connected with the branch water pipe, the water quantity is controlled by the manual switch to spray, and the water curtain hangs down from the upper portion of the protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561884.2U CN210892889U (en) | 2019-09-19 | 2019-09-19 | Multifunctional portal protection device for tunnel portal blasting excavation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921561884.2U CN210892889U (en) | 2019-09-19 | 2019-09-19 | Multifunctional portal protection device for tunnel portal blasting excavation |
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| CN210892889U true CN210892889U (en) | 2020-06-30 |
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| CN201921561884.2U Active CN210892889U (en) | 2019-09-19 | 2019-09-19 | Multifunctional portal protection device for tunnel portal blasting excavation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588190A (en) * | 2021-10-08 | 2021-11-02 | 四川藏区高速公路有限责任公司 | Vibration response test device for blasting construction to adjacent existing tunnel |
| 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 |
| CN114909967A (en) * | 2022-05-26 | 2022-08-16 | 江苏长江爆破工程有限公司 | Trailer type explosion-proof device for chimney directional blasting demolition and use method |
-
2019
- 2019-09-19 CN CN201921561884.2U patent/CN210892889U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588190A (en) * | 2021-10-08 | 2021-11-02 | 四川藏区高速公路有限责任公司 | Vibration response test device for blasting construction to adjacent existing tunnel |
| 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 |
| CN114909967A (en) * | 2022-05-26 | 2022-08-16 | 江苏长江爆破工程有限公司 | Trailer type explosion-proof device for chimney directional blasting demolition and use method |
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