任何细微异常都不放过

Core Viewpoint - The article highlights the importance of the underground comprehensive utility tunnel in Chengdu, which serves as the city's "lifeline" by housing essential municipal pipelines for electricity, communication, gas, and water supply, ensuring the stability and safety of urban infrastructure [3][5]. Group 1: Infrastructure Overview - The Dayun Avenue comprehensive utility tunnel spans approximately 7.3 kilometers and has a standard cross-section width of about 13.4 meters, connecting major urban areas and supporting critical infrastructure such as the Qingyang Industrial Headquarters and hospitals [3][4]. - The tunnel is organized with various municipal pipelines, including stainless steel cable trays for communication lines and DN600 water pipelines, ensuring efficient operation and maintenance [4]. Group 2: Monitoring and Maintenance - The tunnel is equipped with over 200 sensors per kilometer that monitor methane, oxygen, temperature, humidity, and hydrogen sulfide levels, acting as a comprehensive health monitoring system for the infrastructure [4]. - Inspection teams, consisting of two personnel, walk approximately 20,000 steps daily to check every interface, valve, and line, ensuring the safety and control of their designated sections [4]. Group 3: Operational Management - The monitoring center operates 24/7 with a system that includes information display, alarm monitoring, and operational management, automatically responding to any detected anomalies by activating ventilation and fire safety systems [4]. - During the Spring Festival, a dual security system combining human and technological monitoring will be in place to ensure the stability of the underground infrastructure, with emergency teams on standby and sufficient supplies [5]. Group 4: Urban Development - Chengdu has been actively promoting the construction of underground comprehensive utility tunnels, consolidating previously separate pipelines into a single underground system, which enhances urban aesthetics and functionality [5].