The construction process and precautions for buried fiber optic cables can be summarized as follows:
1. Construction process
Geological survey and planning: Conduct geological surveys on the construction area, determine the geological conditions and underground pipelines, and formulate construction plans and wiring diagrams. In this step, the construction site also needs to be arranged, including materials, equipment, machinery, construction routes, labor protection measures, etc.
Determine the construction route: According to the construction plan and wiring diagram, determine the laying route of the optical cable, including the starting point, end point, facilities along the line, joint points, etc.
Material preparation: Purchase and prepare materials and equipment required for construction such as optical cables, optical cable protection tubes, junction boxes, connectors, grounding wires, tools, etc.
Construction site preparation: Clean the construction area, build the construction site, install construction fences, and prepare the mechanical equipment and tools required for construction.
Trench excavation: Excavate the optical cable trench according to the design drawings. The trench width should meet the requirements of optical cable laying, connection, maintenance, etc., and the depth is determined according to the soil quality and the buried depth of the optical cable. At the same time, treat the bottom of the trench to ensure that it is flat and solid. If necessary, pre-fill with sand, cement or supports.
Cable laying: Lay the optical cable along the trench, pay attention to keep the optical cable straight, avoid bending and twisting. During the laying of the optical cable, avoid friction between the optical cable and hard objects such as the trench wall and the trench bottom. There are two laying methods: manual lifting and laying and mechanical traction laying.
Cable protection: Put the optical cable into the protection tube to ensure that the optical cable is not damaged during construction and later use. The protection tube should be made of corrosion-resistant and high tensile strength materials.
Joint production and connection: Make optical cable joints according to the length of the optical cable and the requirements of the joint. During the joint production process, pay attention to cleaning and tightening to ensure the quality of the joint. Then connect the prepared joint to the optical cable to ensure a firm and reliable connection.
Grounding treatment: Connect the grounding wire to the optical cable and the protection tube to ensure good grounding.
Backfill and compaction: Backfill the trench and compact it in layers to ensure that the backfill soil is dense. After the backfill is completed, check the quality of the optical cable laying to ensure that the optical cable is not damaged.
Testing and acceptance: After the laying is completed, the optical cable needs to be tested and accepted. The test is mainly to detect the transmission performance of the optical cable to ensure that it meets the specified technical indicators. Acceptance is to evaluate the overall quality of the optical cable on the basis of qualified testing to confirm that the quality of the optical cable meets the requirements.
2. Precautions
Comply with safety regulations: During the construction process, it is necessary to comply with relevant safety regulations and standards to ensure the personal safety of construction workers and surrounding personnel. Safety warning signs should be set up at the construction site to remind construction workers and passers-by to pay attention to safety.
Fine construction: As a high-precision communication line, optical cable requires fine construction to ensure the connection and transmission quality of the optical cable.
Avoid existing pipelines: When laying optical cables, it is necessary to avoid existing underground pipelines to avoid damaging other pipelines due to laying optical cables.
Optical cable protection: During construction, pay attention to protecting the optical cable to prevent it from being damaged or twisted. In the process of laying the optical cable trench, if the relevant steps are not performed correctly or strictly, the optical cable may be damaged or fail.
Welding technology: Professional equipment and technology should be used when welding optical cables to ensure the quality of welding.
Optical cable testing: After the construction is completed, the optical cable should be tested with an optical cable tester to ensure that the quality of the optical cable meets the requirements.
Data management: After the construction is completed, the archives of the optical cable should be improved to record the location, length, connection and other information of the optical cable.
Construction environment: The depth of the optical cable trench should comply with the regulations, and the bottom of the trench should be flat and free of gravel. When the optical cable line passes through different terrains and sections, corresponding protective measures should be taken.
Progress and quality: Reasonably arrange the construction progress to ensure that the project is completed on time. At the same time, strengthen quality control during the construction process to ensure the safe and stable operation of the optical cable direct burial project.
In summary, the construction process and precautions of underground fiber optic cables are crucial to ensure the service life and transmission performance of optical cables. Careful planning and design are required before construction to ensure construction quality and efficiency. At the same time, during the construction process, it is necessary to strictly follow the relevant regulations and standards to operate and carefully supervise and manage each link.