CN217270237U - Protection device for blasting construction of adjacent existing high-speed super-large section tunnel - Google Patents

Abstract

The application relates to a protection device for blasting construction of an adjacent existing high-speed super-large section tunnel, and belongs to the technical field of protection devices. Including steel bow member basis and the explosion-proof bow member of setting on steel bow member basis, explosion-proof bow member includes the bow member monomer that a plurality of intervals set up, and the inboard and the outside of explosion-proof bow member all are provided with the bamboo raft, and the bamboo raft has outward spouts the concrete, spouts the concrete outside and still is provided with green net, and protector keeps away from and closes on the road side and is provided with the relief pressure hole. The application provides a protector can avoid blasting flyrock to high-speed vehicle personnel's injury through explosion-proof bow member, reduces the economic loss who causes by the blasting, guarantees construction progress effectively, promotes engineering construction. And the outer side and the inner side of the arch center monomer are bound and fixed with bamboo raft, so that the arch center is sealed, blasting flying stones are prevented from flying out of the range of the arch center, the bamboo raft is simple and easy to take, the environment is saved, and the cost is saved. And the explosion-proof arch center door is also provided with a pressure relief hole, so that shock waves generated by explosion are dissipated in time, and the shock waves are prevented from being superimposed to cause serious damage to the explosion-proof arch center door.

Description

Protection device for blasting construction of adjacent existing high-speed super-large section tunnel

Technical Field

The utility model relates to an existing high-speed super large section tunnel blasting construction protector of next-door neighbour belongs to protector technical field.

Background

At present, with the accelerated development of economy and the large-scale development of traffic infrastructure, the proportion occupied by tunnel engineering is larger and larger. At present, in the excavation construction of engineering mountain tunnels such as railways and roads, a drilling and blasting method is mostly adopted for construction. In blasting construction, flying stones and shock waves are often generated, wherein the flying path of the flying stones is difficult to control, and buildings (structures) such as houses, poles and lines and the like are often arranged in the range of the tunnel portal affected by tunnel excavation blasting, so that buildings such as houses, poles, towers and structures and other facilities and equipment near the portal are easily damaged by the flying stones and the shock waves, and residents and constructors around the portal can be injured and killed. Therefore, a protection device for improving the safety of tunnel blasting operation is needed in tunnel blasting construction. For some tunnels close to expressways, blasting construction is very likely to cause damage to vehicles, personnel and surrounding structures close to roads, safety protection is more important, and in the blasting construction process, a flying stone risk exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but have good security, reliability and energy-concerving and environment-protective secondary use's existing high-speed super large section tunnel blasting construction protective apparatus of close proximity.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an existing high-speed super large section tunnel blasting construction protector of next-door neighbour, is in including steel bow member basis and setting explosion-proof bow member on the steel bow member basis, explosion-proof bow member includes the bow member monomer that a plurality of intervals set up, explosion-proof bow member's inboard and outside all are provided with the bamboo raft, the bamboo raft has outward and spouts the concrete, it still is provided with green net to spout the concrete outside, protector keeps away from and closes on the road side and is provided with the pressure-relief vent.

Furthermore, the cross section of the arch single body is the same as that of the tunnel above the inverted arch top.

Further, the bamboo raft is formed by weaving bamboo chips, bamboo rods or rattan.

Further, a plurality of the arch frame single bodies are arranged at even intervals.

Further, the green net is a dustproof green net.

Furthermore, an explosion-proof hanging curtain is further arranged on the arch center single body far away from one side of the section of the tunnel.

The beneficial effects of the utility model reside in that: the application provides a pair of existing high-speed super large section tunnel blasting construction protector of next-door neighbour can avoid blasting flying stone to the injury of high-speed vehicle personnel through explosion-proof bow member, reduces because the economic loss of property that the blasting caused, guarantees the construction progress effectively, promotes engineering construction. And the outer side and the inner side of the arch center monomer are bound and fixed with bamboo raft, so that the arch center is sealed, blasting flying stones are prevented from flying out of the range of the arch center, the bamboo raft is simple and easy to take, the materials are saved, the environment is protected, and the cost can be saved. Concrete is sprayed on the outer side of the bamboo raft, and the side part of the protection device is also provided with a pressure reducing hole, so that shock waves generated by blasting are dissipated in time, and the shock waves are prevented from being superposed to cause serious damage to the explosion-proof arch frame gate. A next-door neighbour has high-speed super large section tunnel blasting construction protector, maneuverability is strong, application scope is wide, plays effectively taking precautions against to bursting flying stone, has good security, reliability, energy-concerving and environment-protective, practices thrift the cost, after blasting construction, but explosion-proof bow member is demolishd the back secondary and is used, brings good security to blasting construction, has better use prospect.

The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description will be given of preferred embodiments of the present invention in conjunction with the accompanying drawings.

Drawings

Fig. 1 is an overall schematic diagram in an embodiment of the present application.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the mechanism or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the embodiment provides a protection device for blasting construction next to an existing high-speed tunnel with an ultra-large cross section, which includes a steel arch foundation 2 and an explosion-proof arch arranged on the steel arch foundation 2.

In the embodiment, the steel arch foundation 2 is arranged by adopting a C25 concrete through length with the thickness of 50cm and the width of 80cm, and HDPE300 corrugated pipes are embedded at intervals of 1m to position the steel arch. It should be noted that the model numbers can be modified according to the construction conditions. In this embodiment, the overall length of the explosion-proof arch is 30m, the length of the explosion-proof arch can be modified by combining the surrounding environment of the ultra-large section tunnel to be blasted, in other embodiments, the length of the explosion-proof arch can be set to 35m or the like, and the length of the specific explosion-proof arch is not set. The explosion-proof arch is a plurality of arch monomer 1 that the interval set up, and arch monomer 1 section is the same with tunnel section more than the inverted arch top. Wherein, a plurality of arch frame monomers 1 are arranged at even intervals. In this embodiment, the explosion-proof arch is set up by 30 arch monomer 1 at intervals, wherein arch monomer 1 is 25a I-steel, and adjacent arch monomer 1 longitudinal separation 1m, and the arch extends outward from the light and dark juncture of tunnel, and the arch section is the same with the tunnel section above the inverted arch top. It should be noted that, the distance between the longitudinal spaces of the adjacent arch units 1 is the same as the distance between the embedded HDPE300 corrugated pipes for steel arch positioning, and in other embodiments, the distance may be modified synchronously, for example, to be 1.5 m. Even interval sets up and to make whole explosion-proof bow member atress even, reduces because of adjacent bow member monomer 1 sets up the shock wave that receives when the distance differs different, increase of service life. It should be noted that, the explosion-proof arch center can be further provided with transverse connecting ribs, so that the explosion-proof arch center is more stable, an explosion-proof hanging curtain (not shown) is further arranged on the arch center single body 1 far away from one side of the tunnel section, and a notch for installing an access door is further reserved on the hanging curtain.

The inner side and the outer side of the explosion-proof arch center are provided with bamboo raft 3, the material of the bamboo raft 3 is simple and easy to obtain, and the bamboo raft can be woven by bamboo chips, bamboo rods or rattans, and in the embodiment, the bamboo raft 3 is a common moso bamboo raft 3. The outer side of the bamboo raft 3 is also provided with sprayed concrete which is C25 concrete, a wet spraying machine is adopted for concrete spraying construction, C25 concrete with the thickness of 4cm is sprayed to enhance the strength of the bamboo raft 3 of the arch frame, and the flying of the bamboo raft 3 out of the arch frame caused by blasting flying stones is prevented from being damaged. And a green screen 5 is also arranged on the outer side of the concrete spraying, and the green screen 5 is a dustproof green screen 5 and covers the top surface of the arch frame after the concrete spraying is finished, so that construction dust pollution is prevented.

In the above, the protection device for blasting construction of the adjacent high-speed super-large section tunnel provided in this embodiment is further provided with the pressure relief vent 4, the pressure relief vent 4 is arranged on the anti-explosion arch centering and far away from the side of the adjacent road, specifically, the pressure relief vent 4 is an opening with a length of 5m and a height of 3m, and the setting external device is arranged far away from the adjacent road or far away from the side of an important structure. The explosion-proof arch center gate can dissipate the shock waves generated by explosion in time, prevent the shock waves from being superposed and cause serious damage to the explosion-proof arch center gate. It should be noted that the pressure relief vent 4 is arranged in the middle of the adjacent arch frame single bodies 1 in the embodiment, the pressure relief vent 4 has a certain distance from the ground, and the space of the pressure relief vent 4 is reserved when the bamboo raft 3 is bound.

In addition, in other embodiments, a double-layer bamboo raft with a height higher than that of the explosion-proof arch is arranged on the side close to the expressway for secondary blocking of the blasting flyrock. In the construction process, the protection of the tunnel portal is protected in a mode of 'steel arch centering, double-layer bamboo raft 3 concrete spraying and vertical bamboo raft frame', so that the blasting flyrock is prevented from damaging vehicles and personnel coming and going on the highway, the monitoring and the measurement are carried out on the tunnel close to the highway in the blasting construction process, and the real-time monitoring is carried out so as to ensure that the tunnel blasting construction is smoothly carried out. The system has the advantages of good safety and reliability, energy conservation, environmental protection and cost saving. The method has the advantages that during blasting construction, existing buildings close to the tunnel are not damaged a little, the tunneling speed is high in the aspect of excavation, the quality is guaranteed, all aspects of field inspection meet design requirements, construction operation is simplified, the working face and the field are kept clean, the whole tunnel is attractive after primary support is completed, time consumption of the whole project, project quality, budget cost, civilized construction and the like are obviously improved, good effect is achieved, and the requirements of standardized and mechanized construction are really met. After blasting construction is finished, the explosion-proof arch center can be used for the second time after being dismantled.

To sum up, the application provides a next-door neighbour has high-speed super large section tunnel blasting construction protector, can avoid blasting flying stones to the injury of high-speed vehicle personnel through explosion-proof bow member, reduces because the economic property loss that the blasting caused, guarantees the construction progress effectively, promotes engineering construction. And the outer side and the inner side of the arch center monomer are bound and fixed with bamboo raft, so that the arch center is sealed, blasting flying stones are prevented from flying out of the range of the arch center, the bamboo raft is simple and easy to take, the materials are saved, the environment is protected, and the cost can be saved. Concrete is sprayed on the outer side of the bamboo raft, and the side part of the protection device is also provided with a pressure reducing hole, so that shock waves generated by blasting are dissipated in time, and the shock waves are prevented from being superposed to cause serious damage to the explosion-proof arch frame gate. A next-door neighbour has existing high-speed super large section tunnel blasting construction protector, maneuverability is strong, application scope is wide, plays effectively to taking precautions against to bursting flying stone, has good security, reliability, energy-concerving and environment-protective, practice thrift the cost, after blasting construction, but explosion-proof bow member demolishs back secondary use, brings good security to bursting construction, has better use prospect.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. The utility model provides an existing high-speed super large section tunnel blasting construction protector of next-door neighbour, its characterized in that is in including steel bow member basis and setting explosion-proof bow member on the steel bow member basis, explosion-proof bow member includes the bow member monomer that a plurality of intervals set up, explosion-proof bow member's inboard and outside all are provided with the bamboo raft, the bamboo raft has outward and spouts the concrete, it still is provided with green net to spout the concrete outside, protector keeps away from and closes on the road side and is provided with the relief pressure vent.

2. The protection device for blasting construction of an immediately adjacent existing high-speed ultra-large section tunnel according to claim 1, wherein the section of the arch monomer is the same as that of the tunnel above the inverted arch top.

3. The protection device for blasting construction of an adjacent existing high-speed ultra-large section tunnel according to claim 1, wherein the bamboo raft is formed by weaving bamboo chips, bamboo rods or rattans.

4. The blast construction protector for adjacent existing high-speed super large cross section tunnels according to claim 1, wherein a plurality of said arch units are evenly spaced.

5. The protection device for blasting construction of an immediately adjacent existing high-speed ultra-large section tunnel according to claim 1, wherein the green net is a dustproof green net.

6. The protection device for blasting construction of the adjacent existing high-speed super large section tunnel according to claim 1, wherein an explosion-proof curtain is further arranged on the arch frame single body far away from the tunnel section side.

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