Tunnel blasting dust removal device

Abstract

The utility model relates to a tunnel blasting dust removal device, and belongs to the technical field of blasting engineering auxiliary devices. The device comprises a tunnel blasting face, a water inlet main pipe and water inlet branch pipes, a valve is arranged at one end of the water inlet main pipe, the other end of the water inlet main pipe is of a closed structure, a plurality of water bags are arranged on the tunnel blasting face or at the position close to the tunnel blasting face, and water inlets of the water bags are communicated with the water inlet main pipe through the water inlet branch pipes. When blasting is carried out, the water bag is damaged under the action of blasting flying stones, and blasting dust is adsorbed and removed by water. The water bag is used for directly adsorbing and removing blasting dust, so that rapid dust removal is realized, the ventilation and dust removal time after blasting can be shortened, and the health and safety of field construction workers can be guaranteed.

Description

Technical Field

[0001] The utility model relates to a tunnel blasting dust removal device, belonging to the technical field of blasting engineering auxiliary devices. Background Art

[0002] The underground project of the hydropower station includes a complex cavern group composed of many caverns such as the main powerhouse, main transformer room, water diversion tunnel, tailwater tunnel, busbar tunnel, and traffic tunnel. The caverns are crisscrossed and densely arranged, and the construction links are coordinated and influenced by each other. During the tunnel blasting construction process, drilling and blasting will produce a large amount of dust and blasting smoke. After the blasting, fresh air must be pressed into the tunnel to discharge the dust and smoke in the tunnel out of the tunnel. After the dust and smoke in the tunnel are diluted to a certain concentration, construction personnel can enter the tunnel to carry out slag removal operations. At present, the ventilation, dust removal and smoke dispersion time after tunnel blasting is as long as nearly one hour, and it will be even longer for long, large, and deeply buried tunnels, which seriously affects the efficiency of construction operations. Failure to meet the standards for ventilation, dust removal and smoke dispersion will seriously affect the health and safety of construction workers. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tunnel blasting dust removal device which can improve the construction efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tunnel blasting dust removal device, including a tunnel blasting face, a water inlet main pipe and a water inlet branch pipe, one end of the water inlet main pipe is provided with a valve and the other end is a closed structure, and a plurality of water bags are arranged on the tunnel blasting face or near the tunnel blasting face, and the water inlet of the water bag is connected to the water inlet main pipe through the water inlet branch pipe.

[0005] Furthermore, the water inlet main pipe is arranged along the two side edges and the top edge of the tunnel blasting face, and anchor rods for fixing the water inlet main pipe are arranged on the tunnel blasting face; the water inlet branch pipe includes a main branch pipe and a connecting branch pipe, and a plurality of main branch pipes are arranged at intervals along the width direction of the tunnel blasting face, and the main branch pipes are arranged vertically, and a plurality of connecting branch pipes are arranged at intervals on each main branch pipe, and each connecting branch pipe is respectively connected to a water bag.

[0006] Furthermore, the water inlet main pipe located at the edges of both sides of the tunnel blasting face is provided with a plurality of connecting branch pipes, and each connecting branch pipe is respectively connected to a water bag.

[0007] Furthermore, the water inlet main pipe and the water inlet branch pipe are both hoses.

[0008] The beneficial effects of the utility model are as follows: during implementation, after the blasthole is charged, the water inlet main pipe is hung on the pre-buried anchor rod, and each trunk branch pipe is in a parallel drooping state, and then water is supplied to the water inlet main pipe through the tunnel water supply pipe, and then injected into the water bag after passing through each branch pipe. After each water bag is filled with water, the water inlet valve is closed, and the tunnel water supply pipe is removed, and then blasting is carried out. The water bag is damaged under the action of blasting flying stones, and the blasting dust is removed by water adsorption. The utility model uses a water bag to directly adsorb and remove the blasting dust, realizes rapid dust removal, thereby shortening the ventilation and dust removal time after blasting, and can ensure the health and safety of on-site construction workers; at the same time, the utility model is mainly a soft structure, which is easy to transport and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the front view of the utility model;

[0010] Figure 2 It is a side view of the utility model;

[0011] Markings in the figure: 1-tunnel blasting face, 2-water inlet main pipe, 3-water inlet branch pipe, 4-valve, 5-water bag, 6-anchor rod, 7-tunnel, 8-blast hole. DETAILED DESCRIPTION

[0012] In order to facilitate the understanding and implementation of the present invention, preferred embodiments of the present invention are selected for further explanation in conjunction with the accompanying drawings.

[0013] like Figure 1 and Figure 2 As shown, the utility model includes a tunnel blasting face 1, a water inlet main pipe 2 and a water inlet branch pipe 3, one end of the water inlet main pipe 2 is provided with a valve 4, and the other end is a closed structure, and a plurality of water bags 5 are provided on the tunnel blasting face 1 or near the tunnel blasting face 1, and the water inlet of the water bag 5 is connected to the water inlet main pipe 2 through the water inlet branch pipe 3.

[0014] Among them, the water inlet main pipe 2, the water inlet branch pipe 3 and the water bag 5 can be arranged at a position close to the tunnel blasting face 1 by means of a bracket, or can be directly fixed on the tunnel blasting face 1. In order to make the implementation more convenient, the preferred method is to directly fix it on the tunnel blasting face 1. The utility model is preferably implemented in the following manner: the water inlet main pipe 2 is arranged along the two side edges and the top edge of the tunnel blasting face 1, and the tunnel blasting face 1 is provided with an anchor rod 6 for fixing the water inlet main pipe 2; the water inlet branch pipe 3 includes a trunk branch pipe and a connecting branch pipe, and the trunk branch pipe is arranged at intervals along the width direction of the tunnel blasting face 1. The trunk branch pipe is arranged vertically, and multiple connecting branches are arranged at intervals on each trunk branch pipe, and each connecting branch pipe is respectively connected to a water bag 5. The water inlet main pipe 2 and the water inlet branch pipe 3 are preferably hoses. The water inlet main pipe 2 can be directly hung on the anchor rod 6. Of course, in order to make the structure more reliable, the water inlet main pipe 2 and the anchor rod 6 can be further tied with ropes. The water inlet main pipe 2 and the water inlet branch pipe 3 can be connected by a preset universal joint. The water inlet main pipe 2 and the water inlet branch pipe 3 are in the form of a hose, which is not only easy to install, but also easy to transport. In order to further improve the dust removal effect, a plurality of connecting branches can also be set on the water inlet main pipe 2 located on the edges of both sides of the tunnel blasting face 1, and each connecting branch pipe is connected to a water bag 5. With this structural method, the water bag 5 does not need to be provided with other fixed brackets, and the structure is simple and reliable. It only needs to put the opening of the water bag 5 on the connecting branch pipe and then tie it. Of course, the water bag 5 and the connecting branch pipe can also be connected by other connection methods such as threaded joints and bayonet joints.

[0015] The preferred working mode of the utility model is as follows: after the blasthole 8 is charged, the water inlet main pipe 2 is hung on the pre-buried anchor rod 6, and the main branch pipes are in a parallel drooping state, and then water is supplied to the water inlet main pipe 2 through the tunnel water supply pipe, and then injected into the water bag 5 after passing through the branch pipes. After each water bag 5 is filled with water, the valve 4 is closed, and the tunnel water supply pipe is removed, and then blasting is carried out. The water bag 5 is damaged under the action of blasting flying stones, and the blasting dust is adsorbed and removed by water.

[0016] It is understandable that, in order to ensure the dust removal effect, the water bags 5 should be distributed as evenly as possible on the plane corresponding to the tunnel blasting face 1, and the water bags 5 should be made of plastic material that is easily damaged by flying rocks.

Claims

1. A tunnel blasting dust removal device, comprising a tunnel blasting face (1), characterized in that: It also comprises a water inlet main pipe (2) and a water inlet branch pipe (3); one end of the water inlet main pipe (2) is provided with a valve (4) and the other end is a closed structure; a plurality of water bags (5) are provided on or near the tunnel blasting face (1); the water inlet of the water bag (5) is connected to the water inlet main pipe (2) through the water inlet branch pipe (3).

2. The tunnel blasting dust removal device according to claim 1, characterized in that: The water inlet main pipe (2) is arranged along the two side edges and the top edge of the tunnel blasting face (1), and an anchor rod (6) for fixing the water inlet main pipe (2) is arranged on the tunnel blasting face (1); the water inlet branch pipe (3) comprises a main branch pipe and a connecting branch pipe, and a plurality of main branch pipes are arranged at intervals along the width direction of the tunnel blasting face (1), and the main branch pipes are arranged vertically, and a plurality of connecting branch pipes are arranged at intervals on each main branch pipe, and each connecting branch pipe is respectively connected to a water bag (5).

3. The tunnel blasting dust removal device according to claim 2, characterized in that: A water inlet main pipe (2) located at the edges of both sides of a tunnel blasting face (1) is provided with a plurality of connecting branch pipes, and each connecting branch pipe is respectively connected to a water bag (5).

4. The tunnel blasting dust removal device according to claim 2, characterized in that: The water inlet main pipe (2) and the water inlet branch pipe (3) are both hoses.

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