As an essential part of modern urban infrastructure, urban underground utility tunnel systems are responsible for the centralized layout of various pipelines, including electricity, communication, natural gas, drainage, and more. They effectively reduce repeated excavation and enhance the utilization of underground space. By minimizing surface excavation, underground utility tunnels provide a more efficient and tidy method of pipeline management for cities, while offering safer and more convenient infrastructure for future urban development.

Within the underground utility tunnels that stretch for tens of kilometers, there are numerous environmental challenges, including high humidity, signal dead zones, or weak signal areas. These environmental factors impose high requirements on the lighting and emergency communication systems within the tunnels. The lighting and emergency communication systems not only support smooth routine inspections but also provide timely response capabilities in case of sudden failures, ensuring that the rail transit system remains operational under any circumstances.

Nanhua Electronics LED lighting fixtures feature excellent waterproof and dustproof performance, making them suitable for the high humidity environment within the tunnels and maintaining outstanding lighting effects over long periods. The professional light distribution design allows the fixtures to cover more narrow tunnel spaces, effectively illuminating larger areas and ensuring that every part of the tunnel receives uniform and adequate lighting.

The constant current driver used ensures long-term stable operation of the fixtures, reducing the need for frequent maintenance and lowering operation and maintenance costs. In the event of power failure during an emergency, the emergency module equipped with the fixtures provides necessary emergency lighting for quick repairs. The image shows engineers conducting specialized tests during installation, checking the integrity of the emergency function without power supply.

In the event of an emergency such as a fire or pipeline leak within the utility tunnel, quick and accurate emergency response is crucial. For emergency communication, we use a VoIP network phone system that supports emergency broadcasting and communication functions, enabling efficient communication through point-to-point calls, three-party and multi-party calls, and tunnel-wide broadcasts. The digital audio technology enhances the system's anti-interference ability, and compared to traditional encoding technologies, digital audio provides a better voice experience, ensuring rapid information transmission during emergencies. High-definition voice technology, combined with unique echo cancellation features, significantly improves call quality.