Background
The Maan Mountain Tunnel, located at longitude 114.089689 and latitude 30.542006, is part of the Guilai Expressway, connecting Guiping City to Laibin. This expressway plays a key role in improving the regional highway network, enhancing traffic efficiency, integrating tourism resources, and supporting economic development in central and southeastern Guangxi.
Tunnel emergencies, such as fires, earthquakes, collapses, or traffic accidents, present significant challenges due to the limited space and complex conditions. Reliable communication, accurate positioning, and coordinated emergency response are essential to ensure effective rescue operations.
Introduction
Completed in 2021, the Maan Mountain Tunnel is equipped with SPON’s IP intercom system, providing a network-based communication solution for tunnel management. This system enables real-time communication, broadcasting, environmental monitoring, and video transmission for rescue personnel. It supports command coordination among multiple departments, improves work efficiency, and ensures orderly emergency operations.
The tunnel emergency system is critical for disaster scenarios, especially fires, where rescue is more challenging than in conventional buildings. Establishing a comprehensive communication platform ensures that rescue teams maintain contact and coordination, enhancing overall safety and operational effectiveness.
Design
Emergency intercom terminals are installed every 200 meters inside the tunnel, ensuring full coverage for emergency communication. Column-style emergency terminals are placed at each tunnel entrance, approximately 10 meters from the exits, providing immediate access to communication points during emergencies.
Speakers are mounted every 50 meters inside the tunnel, facing traffic, to provide complete audio coverage. External speakers are installed on monitoring system camera pillars. The power amplifier and emergency intercom terminals share an IP65-rated enclosure, offering dustproof, moisture-proof, waterproof, lightning-resistant, and EMI-resistant protection. The operator at the control center can call any emergency phone extension with a double-click, automatically establishing a full-duplex call. Through the voice gateway, tunnel phones can dial external lines such as 110, 120, or 119. The system supports multiple simultaneous calls and displays calling extension names for efficient management.
Why Choose SPON?
Transport hubs such as airports, subways, and railway stations require 24/7 broadcasting and command systems to manage massive passenger flows. SPON’s IP PA and intercom solutions support large-scale deployment with cross-regional management, offering low-latency, interference-resistant transmission. Even in noisy environments, messages remain clear and intelligible. Widely applied in passenger guidance, travel information, emergency evacuation, and control room operations, SPON ensures safe and efficient transport management.
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