Closed door device suitable for mine tunnels

Abstract

The invention provides a closed door device suitable for mine tunnels. The device comprises a door main body, an airbag, telescopic rods and a support cushion. The innermost side of the airbag is connected to the frame of the door main body, the telescopic rods are arranged around the door main body, one ends of the telescopic rods are fixedly connected to the frame of the main body, the other ends are connected with the support cushion, and the support cushion is connected to the outermost airbag skin of the airbag into a whole in a bonding mode. According to the device, the door main body inthe middle of a door body is of a hard structure, the edge is an inflatable airbag, so that the door body has certain strength and stability, and good sealing performance; according to the device, oxygen loss can be reduced and the utilization rate of oxygen can be improved without affecting underground ventilation; as the tunnels advance, the position of the closed door can be gradually adjustedto adapt to changes of the environment, so that a closed space is always maintained at an appropriate size, the oxygen concentration in a local space can be maintained, constant oxygen supply effectis ensured, a large amount of underground space resources, material resources and financial resources can be effectively saved, the maintenance is convenient, and the cost is low.

Description

technical field [0001] The invention relates to mine ventilation equipment, in particular to a closed door device suitable for mine roadways. Background technique [0002] In the process of mine construction and mining, with the advancement of mining engineering, the depth of the mine is increasing, and the roadway and working face are also advancing to the deep. Therefore, the construction of chambers also needs to be transferred to deep areas following the mining process. A certain amount of manpower, material and financial resources are required in the special construction process of the traditional pressurized and oxygenated chamber. In the process of underground development, a large number of unused single-ended tunnels and open chambers were left, which were abandoned or used very infrequently, resulting in a waste of underground space resources. Diffuse oxygen supply is often used in downhole operations, but this oxygen supply method consumes a lot of oxygen and can...

AI Technical Summary

Problems solved by technology

However, due to the large oxygen consumption and low utilization rate in the open space of roadways and open chambers, in order to improve the oxygen supply environment, ventilation structures such as dampers, air curtains or air curtains are often used in the roadways in the prior art. In order to improve the local resistance and reduce the escape of oxygen, but the airtight effect of this type of ventilation structure is limited, and at the same time, it cannot be moved or adaptively adjusted with the continuous excavation of the roadway, which leads to a greatly reduced effect of oxygenation, and the existing airtight door Most of them are heavy and inconvenient to move, unable to adapt to the environment of daily underground excavation, and the cost is high

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