What is a defense optical cable?

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

Unlike the civil optical cable, it is absolutely protected. If it is proposed to lay a national defense optical cable, the nearby construction must be absolutely approved, and in most cases it is prohibited. Once information is destroyed, stolen or even stolen from it, it is one level higher than the crime of destroying civil facilities.

Generally speaking, the buried depth of national defense optical cable is about 1.2- 1.5 m. Then, the original ground above the optical cable is leveled and compacted under supervision, and then a C30 concrete cover plate with a length of 3m, a width of 6m and a thickness of 20cm is poured on it (φ 12 steel mesh is set in the cover plate with a spacing of 20cm). After the concrete strength reaches the design strength, backfill 50 cm thick gravel soil on the cover plate.

Extended data:

1, it is strictly prohibited to build houses and scaffolding within 1 m on both sides of optical cable communication lines, and to dig sand and borrow soil, ditch and repair ditches and set up toilets, septic tanks, livestock pens and biogas digesters within 3 meters.

2. It is strictly prohibited to plant trees and bamboo within 2 meters on both sides of the optical cable communication line (0.75 meters on both sides of the urban optical cable line).

3. It is strictly prohibited to carry out blasting, engineering investigation and construction within 20 meters away from the optical cable communication line.

4. It is strictly prohibited to pile up inflammable and explosive articles or set up a warehouse for inflammable and explosive articles beside the optical cable communication lines.

5. It is forbidden to dig sand and rockfill within the range of upstream100m and downstream150m of Jihe and Liushahe optical cable communication lines.

References:

Properly resolve the infringement dispute of national defense optical cable-People's Network