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Mine Safety Door

Mine safety doors are critical components of underground ventilation systems, primarily installed at roadway intersections and air intake/return lanes of mining areas. Under normal conditions, they precisely control the direction of underground airflow, preventing uncontrolled diffusion of harmful gases such as methane and carbon monoxide in roadways. In case of emergencies like underground fires or gas outbursts, they can quickly close to form a sealed isolation zone, cutting off airflow supply to the dangerous area, preventing the expansion of disaster scope, and gaining time for underground personnel evacuation and rescue.

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Product Introduction

mine safety door

Mine safety doors are critical components of underground ventilation systems, primarily installed at roadway intersections . Under normal conditions, they precisely control the direction of underground airflow, preventing uncontrolled diffusion of harmful gases such as methane. In case of emergencies like underground fires or gas outbursts, they can quickly close to form a sealed isolation zone, cutting off airflow supply to the dangerous area, preventing the expansion of disaster scope.

Basic Configuration and Performance Parameters

A standard mine safety door system includes the main door body, hydraulic drive unit, on-site control unit. The door body is welded with high-strength steel plates and coated with anti-corrosion paint.

Parameter Category	Specific Indicators
Design Wind Pressure Resistance	Approximately 20Kpa, capable of withstanding sudden underground pressure shocks
Service Life	Approximately 30 years, with a main structure maintenance-free period of no less than 5 years
Opening/Closing Time	Adjustable, conventional range is 10-30 seconds/time
Power Supply Specification	400V three-phase AC, power consumption ≤1.5KW

Installation and Operation Procedures

QUALITY
STANDARD

Pre-installation Preparation

Measure the roadway section size, confirm that the door installation position is consistent with the ventilation system design drawing.
Main Body Installation

Fix the door frame with anchor bolts, with a horizontality error ≤2mm; hoist the door body and adjust the hinge connection to ensure smooth opening.
System Commissioning

Connect the hydraulic drive unit with the control unit, test the remote/local dual-control mode; set the wind pressure sensing threshold .
Acceptance Standards

Sealing gap ≤5mm after the door is closed; no faults after 100 consecutive opening/closing cycle.

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