On February 10, as the installation and commissioning of the last monitoring camera at the 32km+216m mark of Changliangshan Tunnel on Shuohuang Railway were completed, the 12,780-meter long Changliangshan Tunnel thus realized full video surveillance coverage. It greatly enhanced the safety management capabilities over long and large tunnels on Shuohuang Railway.
The full video surveillance project was not only a concrete practice for Shuohuang Railway to promote sophisticated management featuring visualizable, preventable and controllable management of long and large tunnels, but also an important measure to strengthen safety control of bridges, tunnels and ensure energy transportation safety. The Company scientifically formulated the installation plan, rationally allocated human and material resources, accurately set monitoring points and focused on covering the tunnel vault, side walls, emergency passages and areas of weak coverage, ensuring all-round monitoring without blind spots. In addition, leveraging professional collaboration advantages, the Company arranged construction plans in advance. It made full use of three maintenance windows and successfully completing installation, commissioning and connection of over 30 cameras. Meanwhile, to further strengthen the safety protection network for bridges and tunnels, Shuohuang Railway mobilized relevant units to systematically promote rectification work on typical defects including cracks, seepage and lining deterioration. It established a long-term integrated mechanism of “inspection, diagnosis and rectification”. As a core corridor for west-to-east coal transportation, Shuohuang Railway had an annual transportation volume of over 300 million tonnes. Long-term heavy-haul operation posed severe challenges to the structural safety of bridges and tunnels. The full video surveillance coverage in Changliangshan Tunnel formed effective coordination with the integrated rectification mechanism. Relying on advanced technologies including 3D laser scanning, geological radar, drones and structural status monitoring, the project further improved the overall safety prevention and control system, precisely enhanced the capability for risk identification and disposal, providing strong support for the security of national energy transportation.
The full video surveillance coverage achieved at Changliangshan Tunnel has created a "transparent" management and control environment. As one of the pioneering benchmark practices for refined full-domain monitoring among long and large heavy-haul railway tunnels in China, it provides replicable and scalable practical experience for the safety management and control of similar heavy-haul railway tunnels nationwide.
