Problems encountered in the laying of underground cables

Problems encountered in the laying of underground cables
Attention shall be paid to the cable trench laying of underground cables. Cables with different voltage levels shall be set with different supports, and the cable trench itself shall pay attention to drainage measures. And consider measures to prevent small animals such as rats from entering.
Question 1
Can high and low voltage cables be laid in the same cable trench?
Question supplement: the outdoor cable trench is 1200mm wide with supports on both sides. 10kv High-voltage Cable is laid on one side and 1kV low-voltage cable and control cable are laid on the other side. Does it comply with the specifications? What should I pay attention to?
Answer: it can be laid in cable trench. See GB 50217-2007 p24 5.1 for specific requirements 3、5.1. Requirements of Article 4.
Question 2
The cable trench is parallel to the road. What is the laying spacing?
A: This is mainly to consider the stress of the cable trench cover plate. If there is no problem with the stress, there is no problem. It is generally set on the sidewalk or where motor vehicles do not pass.
Question 3
Should armored cables be used when laying cables in cable trenches?
In terms of technical measures, when the cable is laid in the cable trench or cable tunnel, it should be considered to select the steel tape armored plastic outer sheath type cable with anti ant and rat damage function. But the specification doesn't seem to specify this! Can we not use armored ones?
Answer: armor is not mandatory for directly buried cables, and there is no cable trench. According to different environmental requirements, (if mouse activities are rampant in this area, armored is recommended) generally there is no mandatory requirement.

Problems encountered in the laying of underground cables
Question 4
In the cable trench, what is the minimum distance between strong current cables and weak current cables when they are laid layer by layer on the same side support?
A: separate the weak current cables with metal plates and ground the metal plates at the same time! (click me to get 10 engineering data for free) it is best to pad iron plate (or metal slot box) on the top support, ground the iron plate, and place weak current cables on the iron plate (in the slot box).