A method for connecting air inlet and return air tunnels

Abstract

The invention discloses a method for connecting an inlet and return air tunnel. When the distance between the return air tunnel and the air inlet tunnel is at least 15m before the tunnel runs through, an adjusting wind wall is arranged on the side of the tunnel at the end of the tunnel, and an adjusting window is arranged on the adjusting wind wall. Through 0.1-1m 2 , adjust the adjustment window to control the air volume at the penetration point, and then continue to brush the large penetration section until the full section. This method can control the air distribution volume by controlling the adjustment window on the air wall when the pressure difference between the main air intake and return air alleys is large, which greatly reduces the air leakage of the air adjustment wall and ensures the air flow before and after the penetration. The ventilation system is safe and stable, which improves the efficiency of penetration construction.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for connecting air inlet and outlet air tunnels. Background technique [0002] The roadway is a variety of passages drilled between the surface and the ore body. It is used for transporting ore, ventilation, drainage, pedestrians, and various necessary preparations for new excavation of ore for metallurgical equipment. Under the mine, sometimes it is necessary to The air inlet roadway and the air return roadway are connected. When the ventilation facilities of the excavation roadway between the air inlet roadway and the air return roadway need to be installed near the point of penetration, due to the existence of large equipment such as fully mechanized excavators during the normal excavation of the excavation roadway, It is impossible to adjust the ventilation system after breakthrough by constructing ventilation facilities in the excavation roadway before breakthro...

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Problems solved by technology

[0002] The roadway is a variety of passages drilled between the surface and the ore body. It is used for transporting ore, ventilation, drainage, pedestrians, and various necessary preparations for new excavation of ore for metallurgical equipment. The air inlet roadway and the air return roadway are connected. When the ventilation facilities of the excavation roadway between the air inlet roadway and the air return roadway need to be installed near the point of penetration, due to the existence of large equipment such as fully mechanized excavators during the normal excavation of the excavation roadway, It is not possible to adjust the ventilation system after breakthrough by constructing ventilation facilities in the tunnel before breakthrough

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