SU1511432A1 - Arrangement for damping air shock waves - Google Patents

Abstract

The invention relates to the mining industry and is intended to increase the efficiency of quenching the energy of shock air waves. The device contains an insulating jumper 1 installed on the guides 2. In the cavity 3 of the roof of the excavation 4 concrete slabs 5 are installed, held in the cavity by means of the supporting stopper 6 of the isolating bridge 1. Under the action of an air shock wave on the isolating jumper 1, it moves along the guides 2 The support stopper 6 successively releases the concrete slabs 5. Placing down on the outflow sole, the slabs 5 completely overlap its cross section, thus achieving complete damping of the air shock wave. The return of the concrete slabs 5 in the cavity 3 is carried out using a lifting device 7. 2 sludge.

Description

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The invention relates to the mountain range of the United States and can be used to combat the impact of airborne waves in mountain runs during mass explosions.

The purpose of the invention is to increase the efficiency of energy absorption of shock air waves.

FIG. 1 schematically shows the pre-10 in the roof of the excavation 4 concrete slabs

5, which, lowering on the sole of the excavation 4, completely overlap it

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lagged device, vertical projection; Fig. 2 is the same after interacting with a shock air wave.

The device for damping shock air waves includes an insulating bridge 1 installed on the direction of the PLYOCHI1GH 2, in the cavity 3 of the roof 4 of the excavation concrete slabs 5 are installed, held in the cavity by means of supports-20 of the stopper 6 of the insulating bridge 1. Bo3BpiaT concrete plates 5 into the cavity 3 in the roof of the excavation 4 is carried out using a lifting device 7,

The device works as follows.

In the roof of the ceiling 4, through which the propagation of shock air waves is possible, the cavity 3 forms the initial position of the cavity 3. Under the cavity 3 in the roof and the underside of the excavation, guideways 2 of channels or T-beams are installed. The optimum is their location in the corners of production. On the guides 2, an insulated jumper 1 is installed. Depending on the destination, the jumper can be equipped with calibrated openings for the passage of a ventilation jet or 40 to have doors for access to the isolated space. Insulating bridge 1. may be moved in directions by means of sliding or rolling bearings. The movement force is set by the DZ using a tension device or by changing the weight of the jumper. On the upper part of the jumper, a support stopper 6 is installed, which holds 4 sets of reinforced concrete slabs 5 in the cavity 3 in the roof of the excavation.

Moving on the development of 4, the air shock wave enters the collision with isol-irukldey jumper 1, since

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air shock wave.

During the operation of the device, a damping of the shock air wave is achieved. This is due to the fact that, under its action, the insulating bridge is moved by the distance required to release such a number of plates, the total thickness of which is sufficient to dampen the air shock wave.

After the mass agitating operation, the device is reset. For this, with the help of a lifting device 7, the plate 5 is raised into the cavity 3 in the roof of the excavation 4, and the insulating bridge is closed. Formula of the invention

A device for damping shock air waves, including an insulator installed in a mine working, characterized in that, in order to increase the efficiency of damping the energy of shock air waves, the device is equipped with a set of concrete slabs installed in a cavity made in the roof of the mountain working above the insulating floor1. I) 1 point and longitudinal guides, fixed in the sole and roof of the fab, while the insulating strap in the upper part is provided with a supporting stopper and installed with the possibility of longitudinal movement They are along the longitudinal guides, and the planes of the concrete slabs are oriented perpendicular to the axis of the concrete and rest on the supporting stopper of the insulating bridge.

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the holes in it are calculated for the passage of a ventilation jet, then under the pulse effect of a shock carrier; the idle insulating wave jumper 1 is moved along the guides 2. Depending on the length of the path of movement, the supporting stopper 6 successively releases the 3 installed in the cavity

is reset

air shock wave.

During the operation of the device, a damping of the shock air wave is achieved. This is due to the fact that, under its action, the insulating bridge is moved by the distance required to release such a number of plates, the total thickness of which is sufficient to dampen the air shock wave.

After the mass agitating operation, the device is reset. To do this, with the help of a lifting device 7, the plate 5 is raised into the cavity 3 in the roof of the excavation 4, and the insulating bridge is pushed back to the initial position of 40 ° C.

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Claims (1)

Invention Formula A device for damping shock air waves, including an insulator installed in a mine working, characterized in that, in order to increase the efficiency of damping the energy of shock air waves, the device is equipped with a set of concrete slabs installed in a cavity made in the roof of the mountain working above the insulating floor1. I) 1chk and longitudinal guides fixed in the sole and roof of the curb, while the insulating bridge in the upper part is provided with a supporting stopper and installed with the possibility of longitudinal movement They are along the longitudinal guides, and the planes of the concrete slabs are oriented perpendicular to the axis of the concrete and rest on the supporting stopper of the insulating bridge. t. /////////////// K. FIG. 2