Mines and Underground Mines

1. Personnel positioning and tracking

2. Underground communication and operational coordination

3. Emergency assistance and rescue information transmission

Underground Tunnels and Subway Construction Sites

1. Progress and status feedback for construction work

2. Uploading safety sensor data (gas concentrations, temperature/humidity, structural stress)

3. Emergency escape route guidance and communication for construction personnel

Underground Pipelines and Maintenance Corridors

1. Monitoring internal pipeline equipment (temperature, pressure, flow rates)

2. Locating maintenance personnel to improve efficiency

3. Transmitting fault alarms and issuing remote commands