A method for connecting air inlet and return air tunnels

A technology for air return roadway penetration and return air roadway, which is applied in tunnels, earthwork drilling, tunnel lining, etc. It can solve the problems of being unable to pass through and adjust the ventilation system, and achieve the effect of resisting deformation, reducing air leakage, and small air leakage

Active Publication Date: 2022-04-05
兖矿能源集团股份有限公司
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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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  • A method for connecting air inlet and return air tunnels
  • A method for connecting air inlet and return air tunnels

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Embodiment Construction

[0025] The core of the present invention is to provide a method for connecting the inlet and return air tunnels. In this method, when the pressure difference between the main inlet and return air roads is relatively large, the air distribution volume can be controlled by controlling the adjustment window on the air wall. The air leakage of the adjustable air wall is greatly reduced, the safety and stability of the ventilation system before and after the penetration are ensured, and the efficiency of the penetration construction is improved.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in the present application, other similar embodiments obtained by persons of ordinary skill in the art without making creative eff...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F17/103E21D11/00E21D21/00
CPCE21F1/00E21F17/103E21D11/00E21D21/0026
Inventor 姜希印陶维国赵绪帅徐振波訾美幸贾超张墨尹方洲
Owner 兖矿能源集团股份有限公司
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