What are the three basic types of cable installation?

1, Directly buried laying
Direct burial is one of the simplest and most direct cable installation methods. It directly buries the cable in the underground soil and isolates it from external environmental erosion through natural soil protection. This installation method is suitable for open areas such as urban roads, squares, and factories, as well as situations that do not require frequent maintenance or modification.
Advantages:
Low cost: No additional support structures or protective facilities are required, reducing material and construction costs.
High space utilization: The cable is directly buried underground without occupying ground space, suitable for urban environments with scarce land resources.
Good concealment: The cable is covered by soil, which does not affect the urban landscape and avoids the risk of human damage.
matters needing attention:
Soil conditions: It is necessary to ensure that the soil is non corrosive and has good drainage to prevent cables from getting damp or corroded.
Depth requirements: According to the cable type and voltage level, corresponding burial depth standards must be followed to ensure the safety and stability of the cable.
Protective measures: A protective layer (such as sand layer, bricks, etc.) should be laid above the cable, and warning signs should be set up to prevent damage to the cable during excavation.
2, Aerial laying
Overhead laying is an installation method in which cables are suspended in the air through supporting structures such as poles and towers, and kept at a certain distance from the ground. This method is widely used in fields such as transmission lines, urban lighting, and communication networks.
Advantages:
Easy maintenance: The cable is suspended in the air, making it convenient for daily inspection and maintenance.
Good heat dissipation performance: Strong air circulation is beneficial for cable heat dissipation and extends service life.
Wide applicability: not limited by terrain, especially suitable for mountainous areas, rivers and other areas where underground laying is difficult.
matters needing attention:
Supporting structure: A sturdy and durable supporting structure should be selected to ensure the stability and safety of the cable.
Lightning protection measures: Overhead cables are susceptible to lightning strikes and require corresponding lightning protection measures, such as installing lightning arresters.
Environmental impact: It is necessary to consider the impact of natural environmental factors such as wind, rain, and snow on cables and take corresponding protective measures.
3, Cable trench laying
Cable trench laying is the installation method of laying cables in pre excavated cable trenches, and then sealing the cable trenches with cover plates or fillers. This method is widely used in urban underground utility tunnels, industrial parks, and other places that require centralized management of cables.
Advantages:
Convenient management: Multiple cables can be centrally laid in the cable trench for unified management and maintenance.
High safety: The cable trench has good sealing, which can effectively prevent external factors (such as animal bites and human damage) from damaging the cable.
Strong scalability: Reserve sufficient space for future cable capacity expansion and renovation.
matters needing attention:
Drainage design: It is necessary to ensure that the drainage system in the cable trench is unobstructed to prevent water accumulation from causing damage to the cables.
Fire prevention measures: The cables in the cable trench are densely packed, and fire prevention measures need to be strengthened, such as setting up firewalls and installing automatic fire extinguishing systems.
Sealing requirement: The cable trench cover plate should be well sealed to prevent rainwater, debris, etc. from entering the cable trench and affecting cable operation.