SU1453044A1 - Explosion-damping partition - Google Patents

Abstract

This invention relates to mining promet. The purpose of the invention is to increase the carrying capacity of the lintel and the effectiveness of the blast wave suppression in the mine workings. The jumper contains two rows 1 and 2 interconnected elastic cylindrical containers (EA) 3. The latter are placed in mesh shells 4. The shells 4 adjacent EA 3 are interconnected. Shells 4 and 3 are located along the second perimeter from the side of the movement of the blast wave of a row, connected to the walls of the mine workings. To prevent the jumper from shifting at the moment of interaction with the blast wave, EE 3 p and 1 are filled with compressed air, and EE 3 p and 2 with water and compressed gas. In order to prevent damage to the EAE 3, a safety shield 6 is installed in front of IEE 3. The process of compressing gas in EUE 3 prs 1 increases the vibration resistance of the jumper. The shells 4 increase the durability of the EA 3. The fast-built, vibration-proof bridge allows you to isolate emergency areas without the use of structures that have a high consumption of materials and require large delivery costs. 2 hp ff, 2 ill. (L

Description

Fig, 1

The invention relates to the mining industry, in particular, to devices for damping the energy of an air blast wave generated from the explosion of methane and coal dust in the mine workings of mines, and is intended to protect people, underground structures and equipment when doing mine rescue.

The aim of the invention is to increase the carrying capacity of the lintel and the efficiency of damping the blast wave in the mine workings.

FIG. I depicts the proposed explosive bridge, placed in a mine workout, equipped with a belt conveyor; in fig. 2 is a view A of FIG. one.

The explosive bridge consists of two rows 1 and 2 interconnected elastic cylindrical containers 3 enclosed in mesh shells 4. Non-return valves 5 are used to equalize the pressures in elastic containers of the first and second series when interacting with a blast wave. A load shield 6 is installed next to the load side to protect the jumper elements from damage by the items carried by the explosion. Elastic tanks are autonomously filled through the pipes 7 with shut-off valves. For access to the isolated space of the mine workings 8 for ventilation, an aperture pipe 9 with a lid is provided. In order to avoid damage to the lintel, protruding elements of the support and equipment are provided with protective covers 10. In the mine working, a conveyor belt is installed.

The mesh shells of the first and second row are interconnected. In addition, the second-order mesh shells placed along the perimeter are connected to the reinforcement 12 of the walls 13 of the mine workings. Elastic tanks 3 of the first row 1 are filled with gas under excessive pressure, comparable to the magnitude of long-term pressure in the incident wave, and tanks 3 of the second row 2 are filled with water and compressed gas under pressure that is comparable with the pressure reflected from the jumper wave.

The explosion jumper works as follows.

During the explosion of methane or coal dust, an explosive wave is formed, in the process of interaction with which the protective shield 6 moves. In turn, the protective shield deforms the elastic containers 3 of the first row 1, and the pressure in them increases due to the fact that the second row 2 does not move under the action of the applied load.

If the applied load turns out to be less than the holding force, which is determined by the total force of friction of the capacity of both rows of jumper against the production wall, then the wave energy will be extinguished.

If in the process of interaction the pressure in the containers of the first row of da 1 exceeds the pressure in the tanks of the second row of da 2, a part of gas flows through the valves 5, the pressure in them increases and automatically increases the amount of holding force.

The process of compressing gas in first-pane containers significantly reduces the dynamics

the structure and, as a result, the magnitude of the reflection pressure, which ultimately increases the explosion resistance of the whole structure. Mesh shell 4 increase the strength of elastic containers.

A fast-built, explosion-proof jumper allows to isolate explosive, emergency areas without using sprang, cobbled, etc. structures that have high material consumption and require large labor costs for delivery and construction. A shorter isolation period increases the efficiency and safety of mining and rescue operations, which is of great national and social importance.

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Claims (3)

1. Explosive jumper, comprising two rows of interconnected elastic tanks with valves filled with a working agent, and elements of connecting-NIN elastic containers, characterized in that, in order to increase the bearing capacity of the jumper and the efficiency of damping the blast wave in the mine workings The jumper is provided with a mesh sheath. Cages in which elastic tanks are placed, while the retina shells of adjacent receptacles are interconnected, and the retina casings of elastic receptacles located along the second perimeter from the direction of the blast wave of a row are connected to the mine workings. 2. A bridge according to Claim 1, characterized in that, in order to prevent it from shifting at the moment of interaction with the blast wave, the elastic containers of the first row are filled with compressed air, and the containers of the second row with water and compressed gas. 3. The bridge according to claim 1, characterized in that, in order to prevent damage to the elastic containers, it is provided with a safety shield installed in front of the first series of elastic containers. 12 Yu W 9 Fie.2