U+U type laneway ventilating system of coalface

Abstract

The invention provides a U+U type laneway ventilating system of a coalface, solving the problem that the gas of the coalface is hardly treated and the problem due to the laneway support. The system comprises a first coalface and a second coalface, wherein a first U-shaped laneway is arranged on the periphery of the first coalface; the first U-shaped laneway comprises a main air inlet laneway, an assistant air inlet and belt conveying laneway and a first cutting hole; a second U-shaped laneway is arranged on the periphery of the second coalface; the second coalface laneway comprises a first air returning laneway, a second air returning laneway and a second cutting hole; the assistant air inlet and belt conveying laneway is adjacent to the first air returning laneway, and an entity coal pillar is arranged between the assistant air intake and belt conveying laneway; a transverse bar is formed on the entity coal pillar; and the first cutting hole is communicated with the second cutting hole. With the adoption of the U+U type laneway ventilating system provided by the invention, the problem that the high gas of the coalface is hardly exhausted can be solved; and the true pumping, excavating and mining are joined normally.

Description

technical field

[0001] The invention relates to a ventilation system for roadway layout in a coal mine, in particular to a U+U-shaped roadway ventilation system for mining working faces. Background technique

[0002] At present, there are various roadway layout methods such as "U" type, "U+L" type, and "U+I" type, which are commonly used in coal mines in my country. The roadways arranged in these ways under low gas conditions Basically, it can meet the needs of production and ventilation, but under high gas conditions, there are many disadvantages that are difficult to overcome in the excavation of the tunnel roadway and the ventilation gas control of the mining face. Due to the large amount of coal gas emission in high-gas mines, long-distance single-lane excavation often has the phenomenon of gas exceeding the limit and being forced to stop excavation. Larger gas pools have brought great hidden dangers to gas discharge and safety management. Contents of the invention ...

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