Sealing capsule and application thereof in coal mine

Abstract

The invention discloses a sealing capsule and application thereof in a coal mine. The sealing capsule is a rectangular cubic air bag made of an antistatic flame retardant rubber material, and an inflation and deflation valve is arranged on the rectangular cubic air bag. The application method of the sealing capsule in the coal mine comprises the steps that sealing capsules corresponding in quantity are chosen according to the size and the length of a working surface, and are arranged 10 cm before an upper corner of the working surface in a single-row and multi-layer arranging manner to form a sealing capsule wall. The specific operation steps are as follows: a), a position is chosen precisely, b), the capsules arranged at the bottom are placed levelly, c), the inflation of the capsules arranged at the bottom is completed, d), the capsules arranged on the upper layer are laid, and e), the inflation of the capsules arranged on the upper layer is completed; when the working surface is advanced, f), the capsules arranged at the upper part are deflated, g), the capsules are moved integrally, and h), the capsules arranged on the upper part are inflated; therefore, one working cycle is completed.

Description

technical field [0001] The invention relates to a sealed capsule used for blocking air leakage and gas flow in goafs and reducing gas source paths in upper corners. Background technique [0002] The overrun of gas in the upper corner is one of the biggest obstacles to the safe and efficient production of coal mining face, and the air leakage flow into the goaf is one of the main factors of the gas gushing source in the upper corner. The upper corner of the working face is the inflection point of the ventilation system of the working face. Due to geometric constraints, eddy currents are likely to form at the upper corner and cause gas to exceed the limit. Therefore, gas control at the upper corner is a problem that must be solved for coal mine safety production. There are generally two sources of gas in the upper corner: coal mining and gas gushing from the coal wall during the production process, and gas gushing from air leakage in the goaf. And other basic thinking mana...

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Problems solved by technology

[0004] The disadvantage of hanging the wind barrier along the upper corner is that the wind barrier itself is not very strong, and it will fluctuate with the wind blowing on the working face, and the procedures for fixing and managing workers are more complicated, and the sealing effect is poor. It cannot play a good role in blocking air leakage and gas flow in the goaf; and the disadvantage of adopting the sawdust wall blocking technology is that the humid environment of the coal mining face determines that the service life of the wooden wall is short, and the cost of the sawdust wall is relatively high. High, heavy, not easy to be transferred in a small space, and the sealing effect is not very ideal

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