Tunnel portal explosion-proof shed

Abstract

The utility model provides a kind of tunnel portal explosion-proof shed, including multiple mounting frame body, multiple sealing plate, multiple connecting reinforcing steel;Mounting frame body is fixedly installed on ground, multiple mounting frame body is set between front and back interval;Sealing plate is set between two front and back adjacent mounting frame body, sealing plate is sealed between two mounting frame body to form cavity, sand is filled in cavity;Multiple connecting reinforcing steel is arranged between mounting frame body, and multiple connecting reinforcing steel forms connecting framework, and the tunnel portal explosion-proof shed can be formed sand core by filling fine sand, when being impacted, force is transmitted to sand core by sealing plate, sand and gravel are rubbed and extruded each other and produce tiny displacement dispersion and absorb impact, kinetic energy is converted into internal energy in this process, to absorb impact, and the fine sand after filling provides larger quality for shed body structure, so that shed body is difficult to move after being impacted.

Description

Technical Field

[0001] This utility model relates to tunnel blasting, and in particular to a blast-proof canopy for tunnel entrances. Background Technology

[0002] Tunnel blasting refers to the technique of breaking and throwing the rock or soil at the tunnel face (working face) according to design requirements through drilling, charging explosives, and blasting, in order to achieve the purpose of tunnel excavation.

[0003] During the blasting of a tunnel entrance, the impact generated during the blasting will eject stones from the tunnel at extremely high speeds. Especially when the blasting is carried out next to a road, the flying stones can cause accidental injuries to people outside the warning line at the entrance. To avoid such situations, a blast-proof canopy is usually set up at the entrance to provide a physical barrier.

[0004] Explosion-proof canopies are generally composed of a rigid frame and a flexible suspension. The flexible suspension is usually made of scrap tires and steel wire rope nets, which has low safety strength and is also more troublesome to install. Utility Model Content

[0005] In order to solve the problems of low safety strength of flexible suspension in explosion-proof canopies and complicated installation in the background technology, this utility model proposes an explosion-proof canopy for tunnel entrances.

[0006] The technical solution of this utility model is: it includes multiple mounting frames, multiple sealing plates, and multiple connecting steel bars; The mounting frame is fixedly installed on the ground, with multiple mounting frames spaced apart in front and behind. A sealing plate is placed between two adjacent mounting frames. The sealing plate seals the space between the two mounting frames to form a cavity, which is then filled with sand. Multiple connecting steel bars are installed between the mounting frames, forming a connecting skeleton.

[0007] Preferably, the mounting frame includes an arched frame and two mounting components, which are spaced apart on the left and right sides and are fixedly installed on the ground. The lower parts of both ends of the arched frame are detachably connected to the top of the mounting components located on the same side.

[0008] Preferably, the lower parts of the left and right ends of the arched frame and the top of the mounting component are all fixedly connected to connecting plates, and threaded connection holes are opened at the four corners of the connecting plates, and the corresponding two threaded connection holes are connected by bolts.

[0009] Preferably, the sealing plate includes an arc-shaped plate and two side plates. The arc-shaped plate is fixedly connected between two arched frames. The arc-shaped plate is adapted to the shape of the arched frames. The side plates are fixedly connected to the lower ends of the left and right sides of the arched frames respectively. The side plates are located inside the mounting components and are used to seal the mounting components.

[0010] Preferably, the arched frame has multiple through holes, which are spaced apart along the extension direction of the arched frame. The positions of the through holes on the arched frame are corresponding, and the through holes are used to connect reinforcing bars to pass through.

[0011] The advantages of this invention are: the sand core can be formed by injecting fine sand. When impacted, the force is transmitted to the sand core through the sealing plate. The sand grains rub and squeeze against each other and generate small displacements to disperse and absorb the impact. In this process, kinetic energy is converted into internal energy, thereby absorbing the impact. In addition, the injected fine sand provides a large mass to the shed structure, making the shed difficult to move after being impacted. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the main structure of Example 1; Figure 2 This is a schematic diagram of the skeleton structure of Example 1; Figure 3 This is a schematic diagram of the internal cross-sectional structure of Example 1; Figure 4 This is a side view of the structure of Example 1; Figure 5 for Figure 2 A magnified structural diagram at point A.

[0014] In the diagram, 1 is an arched frame, 2 is an arc-shaped plate, 3 is an installation component, 4 is a connecting steel bar, 5 is a connecting plate, and 6 is a side plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: This example aims to propose an explosion-proof canopy for tunnel entrances.

[0017] according to Figures 1-5 As shown, it includes multiple mounting frames, multiple sealing plates, and multiple connecting steel bars 4; The mounting frame is fixedly installed on the ground. Multiple mounting frames are arranged at intervals in front and behind. Each mounting frame includes an arched frame 1 and two mounting components 3. The two mounting components 3 are arranged at intervals in the left and right directions. The two mounting components 3 are fixedly installed on the ground. The lower parts of the left and right ends of the arched frame 1 are detachably connected to the top of the mounting component 3 located on the same side.

[0018] Ground nails can be installed at the bottom of mounting component 3 for quick installation onto the ground.

[0019] The lower parts of the left and right ends of the arch frame 1 and the top of the mounting component 3 are all fixedly connected to the connecting plate 5. The four corners of the connecting plate 5 are provided with threaded connection holes, and the corresponding two threaded connection holes are connected by bolts. In this embodiment, the arch frame 1 can be made of arc-shaped I-beams.

[0020] A sealing plate is placed between two adjacent mounting frames. The sealing plate seals the space between the two mounting frames to form a cavity, which is filled with sand. Each sealing plate includes an arc-shaped plate 2 and two side plates 6. In this embodiment, both the arc-shaped plate 2 and the side plates 6 are made of steel plates. The arc-shaped plate 2 is fixedly connected between the two arched frames 1. The arc-shaped plate 2 is adapted to the shape of the arched frame 1. The two side plates 6 are fixedly connected to the lower ends of the left and right sides of the arched frame 1, respectively. The side plates 6 are located inside the mounting component 3 and are used to seal the mounting component 3.

[0021] The sealing plate has a two-layer structure between two adjacent mounting frames, sealing the top and bottom of the gap between the adjacent mounting frames.

[0022] Multiple connecting steel bars 4 are installed between the mounting frames, forming a connecting skeleton.

[0023] The arched frame 1 has multiple through holes, which are spaced apart along the extension direction of the arched frame 1. The positions of the through holes on the arched frame 1 are corresponding, and the through holes are used to connect the reinforcing bars 4 through.

[0024] Installation principle: Install the mounting components 3 at intervals on the ground, then use a crane to hoist the arch frame 1 between the two mounting components 3, and then use bolts to install the arch frame 1 on the two mounting components 3.

[0025] Multiple arched frames 1 are installed at intervals using the above method. Then, multiple connecting steel bars 4 are inserted into the corresponding holes. The sealing plate is then installed by welding to form a cavity. A grouting hole is opened at the top of the arc plate 2. Fine sand is poured into the grouting hole, and the fine sand fills the cavity from top to bottom. The grouting hole is then sealed by welding.

[0026] Therefore, the fine sand injected can form a sand core. When impacted, the force is transmitted to the sand core through the sealing plate. The sand grains rub and squeeze against each other, generating small displacements to disperse and absorb the impact. In this process, kinetic energy is converted into internal energy, thereby absorbing the impact. Furthermore, the injected fine sand provides a large mass to the shed structure, making it difficult for the shed to move after being impacted.

[0027] Furthermore, the shed is constructed with a three-layer structure consisting of a frame, sealing plates, and sand cores. The frame provides rigid support to resist impacts, the sealing plates disperse point impacts, and the sand cores absorb the impacts.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tunnel entrance explosion-proof canopy, characterized in that: Including multiple mounting frames, multiple sealing plates, and multiple connecting steel bars (4); The mounting frame is fixedly installed on the ground, with multiple mounting frames spaced apart in front and behind. A sealing plate is placed between two adjacent mounting frames. The sealing plate seals the space between the two mounting frames to form a cavity, which is then filled with sand. Multiple connecting steel bars (4) are installed between the mounting frames, and the multiple connecting steel bars (4) form a connecting skeleton.

2. The explosion-proof canopy for tunnel entrances according to claim 1, characterized in that: Each of the mounting frames includes an arched frame (1) and two mounting components (3), which are spaced apart on the left and right sides. The two mounting components (3) are fixedly installed on the ground. The lower parts of the left and right ends of the arched frame (1) are detachably connected to the top of the mounting component (3) located on the same side.

3. The explosion-proof canopy for tunnel entrances according to claim 2, characterized in that: The lower parts of the left and right ends of the arch frame (1) and the top of the mounting component (3) are all fixedly connected to the connecting plate (5). The four corners of the connecting plate (5) are provided with threaded connection holes, and the corresponding two threaded connection holes are connected by bolts.

4. The explosion-proof canopy for tunnel entrances according to claim 2, characterized in that: Each of the sealing plates includes an arc plate (2) and two side plates (6). The arc plate (2) is fixedly connected between two arched frames (1). The arc plate (2) is adapted to the shape of the arched frame (1). The two side plates (6) are fixedly connected to the lower ends of the left and right sides of the arched frame (1) respectively. The side plates (6) are located inside the mounting component (3) and are used to seal the mounting component (3).

5. The explosion-proof canopy for tunnel entrances according to claim 2, characterized in that: The arch frame (1) has multiple through holes, which are spaced apart along the extension direction of the arch frame (1). The positions of the through holes on the arch frame (1) are corresponding, and the through holes are used to connect the reinforcing bars (4) to pass through.

Images