On February 18, 2025, Beijing time, China, with the acceleration of urbanization, underground passageways, as an essential part of urban infrastructure, have garnered increasing attention regarding their safety and stability. To ensure the unobstructed flow of underground passageways, an advanced CCTV inspection technology has been widely applied in the inspection and maintenance of underground passageways recently.

CCTV inspection, namely Closed-Circuit Television inspection, is a technology that utilizes high-definition cameras and lighting equipment to conduct a comprehensive examination of the interior of underground passageways. Through cameras mounted on remotely operable crawlers, CCTV inspection technology can capture real-time images of the interior of underground passageways and transmit these images to a ground control center via cables or wireless signals. Operators at the control center can monitor the conditions of the underground passageways in real time, promptly identifying and addressing potential safety hazards.

During the inspection process, technicians first conduct a meticulous check of the CCTV inspection equipment to ensure that cameras, lighting devices, cables, etc., are in good condition. Subsequently, they install the cameras on the crawlers and perform debugging to ensure clear images. Prior to inspection, the underground passageways are also cleaned to remove sediment and debris, ensuring the accuracy of the inspection results.

The application of CCTV inspection technology not only enhances the efficiency and accuracy of underground passageway inspections but also effectively reduces maintenance costs. Through real-time monitoring and high-definition image capture, technicians can accurately assess the extent of damage, types of sediment, and potential risk points within the underground passageways, providing precise data support for subsequent repairs and maintenance.

Furthermore, CCTV inspection technology offers advantages such as non-destructiveness, real-time monitoring, and multi-functional integration. It enables inspections without the need for ground disruption, significantly reducing construction costs and time. Meanwhile, modern CCTV robots can also be equipped with various sensors, such as temperature sensors and gas sensors, enabling comprehensive multi-parameter detection and providing all-round protection for the safe operation of underground passageways.

As technology continues to advance and its applications expand, CCTV inspection technology will play an even more crucial role in future urban development, contributing to the construction of smart, safe, and livable cities.