What is defense optical cable?

National defense optical cable is an optical cable used for military information transmission. Generally, it is an optical cable line used for communication, information transmission and reception required for military needs such as military command communication and coordination between departments.

Different from civilian optical cables, it is absolutely protected. If there is a prompt for the laying of national defense optical cables, then the nearby construction must be subject to absolute approval, and in most cases it is prohibited. Once the crime of destruction, theft, or even theft of information is increased, it will be one level higher than the crime of destroying civilian facilities.

National defense optical cables are generally buried at a depth of about 1.2-1.5 meters. Then, under supervision, the original ground above the optical cable is leveled and compacted, and then a 3m long, 6m wide, 20cm thick cover plate is poured on it with C30 concrete (the cover plate is equipped with Φ12 steel mesh, with a spacing of 20cm), until the concrete strength reaches the design After strengthening, backfill 50cm thick gravel soil on the cover plate.

Extended information:

1. It is strictly prohibited to build houses and sheds within 1 meter on both sides of optical cable communication lines, and to dig sand, soil, dig trenches, build ditches and install structures within 3 meters. Toilets, cesspools, livestock pens, biogas digesters, etc.

2. It is strictly prohibited to plant trees, bamboos, etc. within 2 meters on both sides of optical cable communication lines (0.75 meters on both sides of optical cable lines in urban areas).

3. It is strictly prohibited to carry out blasting within 20 meters of optical cable communication lines and carry out engineering survey and construction within 50 meters.

4. It is strictly prohibited to stack explosive and flammable products or set up a warehouse for explosive and flammable products next to optical cable communication lines.

5. It is strictly prohibited to dig sand or pile rocks in seasonal rivers or quicksand rivers, within 100 meters upstream and 150 meters downstream of optical cable communication lines.

Reference material: Properly resolve disputes over infringement of national defense optical cables - People's Daily Online