Kanal fiber optik kablo ile doğrudan gömme fiber optik kablo arasındaki fark

Boru fiber optik kablo, erişim ağında veya kullanıcı binaları ağında dış mekan fiber optik kablo ile kullanılır. İletişim fiber optik kablo döşeme yollarından biri. Boru hattı döşemesi genellikle kentsel alanlarda yapılır, boru hattı döşeme ortamı daha iyidir, bu nedenle fiber optik kablo kılıfı veya zırhlama için özel bir gereklilik yoktur. Boru hattını döşemeden önce, döşeme bölümünün uzunluğunu ve bağlantı noktasının yerini seçmelisiniz. Döşeme sırasında mekanik yan kılavuz veya manuel çekiş kullanılabilir. Bir çekişin çekiş gücü, fiber optik kablonun izin verilen gerilimini aşmamalıdır. Boruyu yapmak için kullanılan malzeme beton, asbestli çimento, çelik boru, plastik boru vb. coğrafyaya göre seçilebilir.

　　Directly buried fiber optic cable is a kind of communication fiber optic cable laying method. This fiber optic cable external steel belt or steel wire armor, directly buried in the ground, requiring resistance to external mechanical damage to the performance and prevent soil corrosion performance.

　　What is the difference between pipeline fiber optic cable and direct buried fiber optic cable?

　　Pipeline cable laying before the following preparations should be made

　　1. Check the location of the pipe hole occupied by the fiber optic cable according to the design;

　　2. In the same route selected hole location should not change, such as changes or bends, should meet the requirements of the cable bending radius;

　　Manually place the cable when each manhole should be manned; mechanical placement of fiber optic cable when the bend manhole should be manned.

　　Fiber optic cable through the pipe hole or pipe bend or cross, should be used to guide the device or flare protection tube, shall not damage the cable outer sheath. As needed, the cable can be coated with neutral lubricant around the cable.

　　Fiber optic cable a traction length is generally not greater than 1000 meters. Extra long should take 8 word segmental traction or intermediate plus auxiliary traction.

　　Fiber optic cable placement, should be unified command, manhole by manhole will be placed in the specified pallet, and should leave a suitable margin to avoid cable taut too tight.

　　The length of the fiber optic cable reserved for the manhole where the connector is located should be in accordance with the table; the design requirements for special reserved fiber optic cable is too tight.

　　The protection measures of the pipeline fiber optic cable should meet the following requirements.

　　1. manhole fiber optic cable can be protected by snake hose (or soft plastic tube) and tied to the cable pallet or according to the design requirements of the measures to deal with;

　　2. The mouth of the pipe should take measures to plug the mouth;

　　3. The fiber optic cable in the manhole should be identified with a mark;

　　4. Cold areas should take anti-freezing measures according to the design requirements to prevent damage to the fiber optic cable.

　　Plastic sub-pipe placement method is basically the same as fiber optic cable placement, should also meet the following requirements.

　　1. Placement of more than two sub-pipe without color coding, in the end should be well marked;

　　2. Placement of plastic sub-pipe ambient temperature should be between -5oC - plus 35oC;

　　3. The length of plastic sub-pipe should not exceed 300 meters;

　　4. The maximum pulling force of the sub-pipe should not exceed the tensile strength of the pipe, and the pulling speed should be uniform;

　　5. The remaining length of the pipe in the manhole should meet the design requirements;

　　6. put on the plastic sub-pipe hole, should be installed plastic pipe plug (can also be used in other ways), to fix the sub-pipe;

　　7. Sub-pipe in the middle of the pipe shall not have a joint;

　　8 sub-pipe placement is completed, the mouth of the pipe should be made temporary blocking; this phase of the project not used sub-pipe must be installed at the end of the plug (cap).

　　Directly buried fiber optic cable

　　Directly buried fiber optic cable and other buildings and underground pipelines distance, should meet the requirements.

　　With the trench laying of fiber optic cable, shall not cross, overlap, it is desirable to use separate traction at the same time the deployment of the way.

　　Directly buried fiber optic cable laying should meet the following requirements.

　　1. The depth of the cable trench should be in line with the provisions, the bottom of the trench should be flat without debris; stone, semi-stone trench bottom should be laid 10 cm thick of fine soil or sand;

　　2. mechanical traction, should use the ground pulley;

　　3. Manual lifting, the cable should not appear less than the specified radius of curvature of the bend and dragging, traction too tight and other phenomena;

　　4. Fiber optic cable must be placed flat in the bottom of the trench, not vacant and arched;

　　5. Fiber optic cable laid in slope greater than 20 degree , the slope is longer than 30 meters on the slope, it is appropriate to use "S" shaped laying or according to the design requirements of the measures to deal with;

　　6. Laying process or after the deployment, should be timely inspection of the outer skin of the cable, such as damage should be immediately repaired; direct burial cable should be checked after laying the cable sheath to ground insulation resistance.

　　7. Optical fiber and copper conductors in the cable must be checked to confirm compliance with the quality acceptance standards before the full trench back to the soil.

　　Fiber optic cable trench backfill should meet the following requirements. 

　　1. first backfill 15 cm thick crushed soil or fine soil, forbidden to push stones, bricks, frozen soil, etc. into the trench, and should be manually stepped;

　　2. Backfill should be 10 cm above the ground.