CN211527221U - Tunnel blasting protector convenient to dismouting - Google Patents

Abstract

The utility model relates to a tunnel blasting protector convenient to dismouting, including stand basis, pre-buried pipe, stand, anchor bolt, crossbeam, couple, wire net and geotechnological cloth, the stand basis sets up in tunnel entrance to a cave both sides, has buried the pre-buried pipe that the opening is upwards in the middle of the stand basis underground, the stand can insert to the pre-buried pipe from the top down, and the crossbeam detachably installs in two stand tops, and stand and crossbeam pass through anchor bolt and install on the rock face of tunnel entrance to a cave both sides and top, all install the couple on stand and the crossbeam, are used for installing wire net and geotechnological cloth on stand and crossbeam respectively; the steel wire mesh and the geotextile can effectively avoid the damages of flying stones and shock waves generated during blasting to buildings, structures, equipment and facilities near the tunnel portal, avoid casualties, simultaneously reduce the environmental and noise pollution generated by blasting, effectively protect the ecological environment and promote the image of enterprises.

Description

Tunnel blasting protector convenient to dismouting

Technical Field

The invention belongs to the technical field of tunnel construction blasting protection, and particularly relates to a tunnel blasting protection device convenient to disassemble and assemble.

Background

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, flyrock and shock wave are often generated, wherein the flying path of the flyrock is difficult to control, so buildings, such as houses, poles, electric towers, structures and the like near the hole, and other facilities and equipment are easy to be damaged by the flyrock and the shock wave, and simultaneously residents and constructors around the hole can be injured and killed, in addition, noise, dust pollution and the like generated by blasting can cause serious environmental pollution, cause bad damage to people and livestock around and bring negative effects to enterprises, but in the current tunnel blasting construction, a formed tunnel blasting protection device which can be popularized in a large scale is difficult to see.

Therefore, develop a tunnel blasting protector convenient to dismantle, not only can ensure the safety of people and animals, building, facility, equipment etc. near tunnel boring in-process entrance to a cave, avoid the property loss and the casualties that tunnel blasting caused, still have the dust fall simultaneously, fall makes an uproar, improves ecological environment's effect, has high realistic meaning and value.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the defects existing in the prior art, the tunnel blasting protection device has the advantages of simple structure, convenient disassembly and effective protection, prevents flying stones and shock waves from harming buildings, facilities, equipment and people and livestock around the tunnel, and is favorable for protecting the ecological environment.

For solving the above technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides a tunnel blasting protector convenient to dismouting which characterized in that includes: the device comprises an upright post foundation, a pre-buried pipe, an upright post, an anchoring bolt, a cross beam, a steel wire mesh and geotextile;

the stand basis sets up in tunnel entrance to a cave both sides, has buried the ascending pre-buried pipe of opening underground in the middle of the stand basis, the external diameter of stand is slightly littleer than the internal diameter of pre-buried pipe, and the stand can insert to the pre-buried pipe from the top down, and crossbeam detachably installs in the top of two stands, and stand and crossbeam pass through the anchor bolt and install on the rock face of tunnel entrance to a cave both sides and top, wire net and geotechnological cloth detachably install respectively on stand and crossbeam.

Through the design, flyrock and shock wave generated during blasting can be blocked by the steel wire mesh and the geotextile between the upright post and the cross beam, so that the safety of people, livestock, buildings, facilities, equipment and the like near the hole in the tunnel blasting process is effectively ensured, and property loss and casualties caused by tunnel blasting are avoided.

Preferably, the column foundation is a reinforced concrete structure poured on two sides of the tunnel opening.

Through above design, can ensure that the stand base is stable and firm, can not make whole device topple over when steel wire net and geotechnological cloth receive flyrock and shock wave and strike.

Preferably, the connecting device further comprises a connecting piece used for installing the cross beam on the tops of the two upright posts, wherein the connecting piece is a connecting bolt or a channel steel installed on the tops of the upright posts and provided with an upward opening.

Through the design, the connecting piece can be easily obtained, the use is very convenient, the disassembly and the assembly are easy, and the connecting piece is firm and durable.

As a further preferred scheme, the upright columns and the cross beams are made of steel, and the channel steel is installed at the tops of the upright columns through welding.

Through the design, the upright posts and the cross beams are simple and easy to obtain, and the material is easy to obtain, firm, durable and not easy to deform.

As a more preferable scheme, the steel wire mesh and the geotextile are detachably mounted on the upright posts and the cross beams through the hooks.

Through the design, the installation and the disassembly of the steel wire mesh and the geotextile can be simpler and faster, and the steel wire mesh and the geotextile are easier to replace when damaged.

The utility model discloses a theory of operation is:

before tunnel blasting, inserting the lower ends of the stand columns into the embedded pipe, then unfolding and straightening the steel wire mesh wound on the stand columns, hanging the steel wire mesh on hooks of the two stand columns, and then installing the cross beam on the tops of the stand columns through a connecting piece; then, sleeving an anchoring bolt on the upright post and the cross beam, fixing the anchoring bolt with an anchor rod which is pre-driven into a rock surface of the opening, and then hanging the geotextile on a hook of the cross beam; in order to ensure that the geotextile can effectively reduce the energy of shock waves, the geotextile is sprayed with water for wetting before blasting, so that the weight and the buffering capacity of the geotextile are increased, and meanwhile, the surrounding ground is also sprayed with water so as to reduce the flying dust excited by the shock waves; for the life who improves geotechnological cloth, the wire net is installed in the one side that is more close to the tunnel inside, is in the direction in the tunnel outside from the tunnel promptly, and geotechnological cloth is installed to the outside, and inboard installation wire net. After blasting is finished, unlocking the anchoring bolt, taking the geotextile and the cross beam down, winding the geotextile on the cross beam, and binding and fixing the geotextile by using a rope; and then, taking the stand column out of the embedded pipe, taking down the steel wire mesh, winding the steel wire mesh on the stand column on one side, and binding and fixing the steel wire mesh by using a rope.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses flying stone to the tunnel blasting production can play good effect of blockking, plays fine guard action, very safety to near building, structures, equipment, personnel etc. in entrance to a cave.

2. The utility model discloses simple structure, resistance to wear are strong, safe and reliable, installation and dismantlement are very convenient, easily promote and use.

3. The utility model discloses can effectively reduce the shock wave of avoiding blasting production even to external influence, still play the dust fall simultaneously, fall and make an uproar, protect ecological environment's effect.

4. The utility model discloses used material is common material in the tunnel construction, simple manufacture, and low cost can be in position cyclic utilization that needs the protection such as entrance to a cave and hole.

Drawings

The contents of the drawings and the reference numerals in the drawings are briefly described as follows:

fig. 1 is a tunnel blasting protector schematic structure convenient to dismantle.

Fig. 2 is a schematic view of a-a section of the tunnel blast protector of fig. 1.

Fig. 3 is a schematic view of a connection state of a vertical column and a lateral elevation of a beam of the tunnel blasting protection device in fig. 1.

Fig. 4 is an enlarged schematic view of a portion a of the tunnel explosion protection device in fig. 1.

Fig. 5 is an enlarged structural diagram of a part B of the tunnel explosion protection device in fig. 1.

In the figure; 1-column foundation; 2-a pre-buried pipe; 3-a column; 4-anchoring the bolt; 5-connecting piece; 6-a cross beam; 7-a hook; 8-steel wire mesh; 9-geotextile.

Detailed Description

The present invention will be described in further detail with reference to the attached drawings, by way of example, to assist those skilled in the art in providing a more complete, accurate and thorough understanding of the inventive concepts and technical solutions of the present invention.

Example 1

As shown in fig. 1 to 5, a tunnel blasting protection device convenient to disassemble and assemble comprises an upright post foundation 1, a pre-buried pipe 2, an upright post 3, an anchoring bolt 4, a connecting piece 5, a cross beam 6, a hook 7, a steel wire mesh 8 and geotextile 9; the upright post foundation 1 is a reinforced concrete structure poured on two sides of a tunnel portal, the middle of the upright post foundation 1 is embedded with a pre-embedded pipe 2 with an upward opening, the outer diameter of the upright post 3 is slightly smaller than the inner diameter of the pre-embedded pipe 2, the upright post can be inserted into the pre-embedded pipe 2 from top to bottom, the cross beam 6 is detachably installed at the tops of the two upright posts 3 through a connecting piece 5, the upright posts 3 and the cross beam 6 are installed on rock surfaces on two sides and above the tunnel portal through anchor bolts 4, hooks 7 are installed on the upright posts 3 and the cross beam 4, and a steel wire mesh 8 and a geotextile 9 are detachably installed on the upright posts 3 and the cross beam 6 through the hooks. The embedded pipe 2 is a DN 100X 4 steel pipe, the upright post 3 and the cross beam 6 are DN 80X 3.5 hot-rolled seamless steel pipes, the connecting piece 5 is a [ 10 channel steel, the opening of the connecting piece 5 is upward, the bottom end of the connecting piece is welded on the top of the upright post 5, and the cross beam 6 is erected at the top end of the upright post 3 through the [ 10 channel steel connecting piece 5 with the upward opening; the anchoring bolt 4 is a fixing device with a bolt made of phi 20 steel bars and is connected with an anchor rod anchored into rock; wire net 8 is 1 cm's of mesh individual layer wire net, for the life who improves geotechnological cloth 9, wire net 8 installs in the one side that is closer to the tunnel inside, and towards the direction of entering the hole in tunnel promptly, geotechnological cloth 9 is installed to the outside, and inboard installation wire net 8.

The utility model discloses a theory of operation is:

before tunnel blasting, the lower ends of two upright posts 3 are inserted into the embedded pipe 2, then the steel wire mesh 8 coiled on the upright posts 3 is unfolded and straightened, and is hung on hooks 7 of the two upright posts 3, and then a cross beam 6 is installed at the tops of the upright posts 3 through a connecting piece 5; then, sleeving the anchoring bolts 4 on the upright posts 3 and the cross beam 6, fixing the anchoring bolts with anchor rods which are pre-driven into the rock surface of the hole, and then hanging the geotextile 9 on the hooks 7 of the cross beam 6; in order to ensure that the geotextile 7 can effectively reduce the energy of shock waves, the geotextile is sprayed with water for wetting before blasting, the weight and the buffering capacity of the geotextile are increased, and the geotextile is sprayed with water on the peripheral ground while spraying water, so that the flying dust generated by the shock waves is reduced. After the blasting is finished, the anchoring bolt 4 is unlocked, the geotextile 9 and the cross beam 6 are taken down and the geotextile 9 is wound on the cross beam 6 and fixed by binding with ropes, then the upright post 3 is taken out from the embedded pipe 2, the steel wire mesh 8 is taken down and wound on the upright post 2 on one side, and the steel wire mesh is also fixed by binding with ropes.

Example 2

Example 1 was repeated, but with the difference that the connecting members 5 were connecting bolts, threaded holes having a size matched with the connecting bolts were provided at the upper ends of the columns 3 and the two ends of the cross member 6, and the two ends of the cross member 6 were detachably mounted at the upper ends of the columns 3 through the connecting bolts.

Example 3

Example 1 was repeated with the following difference that the steel wire mesh 8 was a double layer steel wire mesh with mesh openings of 1cm by 1 cm.

Example 4

Example 2 was repeated with the following difference that the steel wire mesh 8 was a double layer steel wire mesh with mesh openings of 2cm by 2 cm.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications and equivalent substitutions made within the principles and design principles of the present invention should be included within the scope of the present invention.

Claims (5)

1. The utility model provides a tunnel blasting protector convenient to dismouting which characterized in that includes: the steel wire mesh anchoring device comprises a stand column foundation (1), a pre-buried pipe (2), stand columns (3), anchoring bolts (4), cross beams (6), a steel wire mesh (8) and geotextile (9);

stand basis (1) sets up in tunnel entrance to a cave both sides, has buried opening ascending pre-buried pipe (2) underground in the middle of stand basis (1), the internal diameter of outer diameter ratio pre-buried pipe (2) of stand (3) is slightly littleer, and stand (3) can insert to pre-buried pipe (2) from the top down, and crossbeam (6) detachably installs in the top of two stands (3), and stand (3) and crossbeam (6) are installed on the rock face of tunnel entrance to a cave both sides and top through anchor bolt (4), wire net (8) and geotechnological cloth (9) detachably install respectively on stand (3) and crossbeam (6).

2. A tunnel blast protector as set forth in claim 1, wherein: the upright column foundation (1) is of a reinforced concrete structure poured on two sides of a tunnel portal.

3. A tunnel blast protector as set forth in claim 1, wherein: the connecting structure is characterized by further comprising connecting pieces (5) used for installing the cross beam (6) on the tops of the two upright columns (3), wherein the connecting pieces (5) are connecting bolts or channel steel with upward openings and installed on the tops of the upright columns (3).

4. A tunnel blast protector as set forth in claim 3, wherein: the upright post (3) and the cross beam (6) are made of steel, and the channel steel is installed at the top of the upright post (3) through welding.

5. A tunnel blasting protection device convenient to disassemble and assemble according to any one of claims 1 to 4, characterized in that: still including installing couple (7) on stand (3) and crossbeam (6), wire net (8) and geotechnological cloth (9) are installed on stand (3) and crossbeam (6) through couple (7) detachably respectively.

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