The vulnerability of communication cables is closely related to their structure, materials, and usage environment. The following is an analysis of the most vulnerable cable types and their causes:

1、 Fragile cables classified by structure

1. ‌Symmetric cable‌
   Due to the complex structure of multiple twisted wires inside, the insulation layer is prone to conductor breakage caused by mechanical compression or bending, especially during construction and laying, which poses a higher risk.

2. ‌coaxial cable‌
   The insulation medium between the central conductor and the shielding layer is thin, making it susceptible to voltage anomalies (such as lightning strikes) and breakdown, and joint oxidation can cause signal attenuation.

2、 Fragile cables classified by function

1. ‌Field cable‌
   In temporary installation scenarios, there is a lack of fixed protection, which makes it susceptible to external forces such as pulling, animal bites, or environmental corrosion (such as dust, rain).

2. ‌Yongbei Cable (Underground/Underwater)‌
   Long term humid environments can easily cause insulation aging, and submarine cables also face mechanical damage risks such as salt spray corrosion and ocean current impact.

3、 Vulnerable cables classified by laying method

1. ‌Overhead cable‌
   Exposed outdoors, ultraviolet radiation accelerates the powdering of the protective sheath and is susceptible to strong wind oscillation, leading to metal fatigue fracture.

2. ‌Directly buried cable‌
   Soil settlement or excavation operations may directly cut off cables, and underground chemicals such as acid and alkali can corrode metal sheaths.

4、 High risk cables in special environments

• ‌Mine cable‌
  Mechanical vibration is frequent and requires flame retardant design. If the shielding layer is damaged, it will exacerbate signal interference.

• ‌High temperature area cable‌
  Long term overheating operation leads to insulation carbonization. If high-temperature resistant models (such as silicone rubber insulation) are not selected, the failure rate will significantly increase.

This article was generated by AI