In recent years, several cities have witnessed tragic incidents where people were injured or even lost their lives due to uncovered manholes. These events are deeply disturbing and have raised public concern. In Mianyang, which officially joined Fujian Province in recent years, the increasing rainfall has made citizens more anxious about similar dangers. To address this issue, the Municipal Office for Urban and Rural Environmental Comprehensive Management recently brought together representatives from major property management companies to discuss and implement safety measures for manhole covers across the city.
The reporter learned that the city is planning to introduce protective nets in Sakai, inspired by successful practices from Beijing and other regions. This initiative will be tailored to local conditions, aiming to enhance public safety. Recently, the Municipal Office for Integrated Urban-Rural Environment Management held a meeting with property units in Sakai, outlining the key tasks for installing the "protective nets" ahead of the upcoming flood season.
Jiang Tao, deputy director of the Digital Urban Management Center, revealed that there are approximately 100,000 inspection wells in the area, with ownership spread across various sectors such as drainage, street lighting, power, water supply, gas, and telecommunications. Among these, two types of well structures are particularly complex: multi-unit public wells and municipal access points located outside residential areas. Addressing these challenges requires coordinated efforts among different stakeholders.
The protective nets will first be installed in high-risk areas, such as places prone to water accumulation, busy roads, and locations where manhole covers are frequently missing. Over time, the initiative will expand to cover all sites, aiming to eliminate potential safety hazards effectively.
A representative from the Municipal Urban Management and Law Enforcement Bureau emphasized that this project also serves as an opportunity to clarify the ownership and responsibilities of each well, ensuring timely maintenance and repairs. This step is crucial for long-term urban safety and efficiency.
The installation of safety nets typically involves securing a mesh structure using expansion bolts on the well walls. The mesh, designed like a spider web, offers excellent resistance to corrosion, easy maintenance, and strong durability at a low cost. Each net can support around 200 kilograms, making it difficult for pedestrians to fall through if they step on it.
In addition to the protective nets, the city is also testing two new safety measures. One is the automatic alarm system for missing manhole covers. A folding warning bar is installed beneath the cover, which automatically rises when the cover is removed, displaying a 30-40 cm warning sign. This device will be piloted at several key locations before being widely adopted.
Another innovation is the use of locked manhole covers. These are cast iron covers equipped with special code locks, requiring a unique key to open. The design prevents theft and ensures the cover remains securely in place, even during heavy rain or vehicle traffic. Although this method is more complex to implement, it will be gradually introduced, especially for new installations.
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