What should be done when an outdoor trench encounters a cable trench (with a cross-section where avoidance is not possible)? ?
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What should be done when an outdoor trench encounters a cable trench (with a cross-section where avoidance is not possible)? ? The trench elevation is above the cable trench.
The cable can be protected by adding an insulating sleeve. At the closest point of intersection of the pipes, a grounding point is provided. When intersections between urban gas pipelines and cable trenches are unavoidable, each pipeline at such intersections is fitted with a sleeve, the cables are also provided with additional protection, and sand should be filled on both sides of the pipelines at the intersection of the trenches. Prevent flammable gases from leaking into the cable trenches; otherwise, if the cables leak electricity and explode, the entire cable trench beneath the road will burst open. The entire road had to be demolished and rebuilt. Such situations have occurred in some cities. The basic principle of design – safety and environment.
Then, in the situation you mentioned, sir, are the gas pipes and cable trenches located in the same trench? Are there still two layers of trenches, separated by a concrete layer? Or other types? How are the trenchs constructed when they intersect? Is there a way to do it? ? Thank you!
It cannot be in one trench. I'm talking about intersection. There are no drawings.