1, Common problems with buried cables

Underground cables, as one of the important infrastructure in cities, are widely used in fields such as electricity, communication, and natural gas. But with the continuous development of urban construction, underground cables also face a series of problems:

1. Construction damage: Due to the lack of indication of underground cable layout, it is easy to be damaged during the construction process and also increases construction costs;

2. Accidental injury to personnel: Failure to set up cable warning signs can easily lead to accidental injury to personnel;

3. Maintenance difficulties: Underground cables are placed deep underground, and once a fault occurs, troubleshooting and maintenance require a lot of time and manpower.

2, National standard specification for marker posts for buried cables

Underground cable marker posts are one of the essential facilities in the process of underground cable laying. In order to improve the safety protection level of underground cables, the Chinese national standard has formulated the "Underground Cable Warning Signs and Their Applications" (GB/T 50313-2018) standard.

This national standard specifies the requirements, design, construction, and management of warning signs for buried cables, including:

1. Underground cable warning signs are facilities that mark warning information on the ground, and the form of the signs can be brick piers, columns, signs, etc;

2. Design requirements: Warning signs should be set vertically with underground cables, and the text and standard color of the signs should comply with national standards;

3. Construction requirements: Before the construction of warning signs for buried cables, on-site survey and environmental impact analysis are required. After construction, acceptance and daily maintenance should be carried out;

4. Management requirements: Units that set warning signs for buried cables need to conduct regular inspections and inspections to promptly identify and address issues.

3, Method of implementing marker posts for buried cables

1. On site survey: Conduct a survey of the laying direction and on-site conditions of underground cables, and determine the number and location of warning signs for buried cables;

2. Design sign scheme: Develop a cable warning sign scheme that complies with national standards and adapts to the actual site conditions, such as patterns, colors, heights, etc;

3. Construction: Select warning sign materials that meet quality requirements, and arrange cable warning signs according to the standard construction layout;

4. Maintenance and repair: Regularly inspect, clean, maintain and repair cable warning signs to ensure their normal function.

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