The harm of urban waterlogging first affects urban transportation, followed by drainage and sewer systems, and more seriously, it can even cause power outages. In this issue, we will discuss the problem of water accumulation in cable trenches, which is already difficult to drain. If not resolved in a timely manner, it may damage the cables and affect normal power supply. Below are some suggestions for dealing with water accumulation in cable trench covers.

1. The problem of cable waterlogging on the roadside can only be solved by simply sealing the cable trench surface with a layer of cement slurry, and filling the surface of the cable trench with some soil, which can also achieve waterproofing. At this point, the issue of groundwater level should be considered. If the groundwater level is high, the resin cable trench cover plate should consider drainage issues. Construct a reasonable number of drainage wells.

2. If there is too much water accumulation in the cover plate of the composite cable trench, it will corrode the outer protective layer of the cable, usually the PVC insulation layer. If the outer insulation layer is broken, the consequences will be serious. The live wire of the cable comes into contact with water, resulting in a single-phase or three-phase grounding fault. At present, it has been found that inspectors can clearly grasp the situation of water accumulation and fire sealing in the cable trench without opening the cover plate during the inspection process, and the effect is very ideal. Therefore, popularization has been carried out in substations such as Baisha Substation and Shiqiao Substation. In the next stage, the center plans to install visible cable trench covers for substations such as Lijia Substation and New Territories Substation.

3. When the composite cable trench cover passes through the roadway at an intersection, it is recommended to use fiberglass reinforced plastic for laying, while reserving a portion of fiberglass reinforced plastic. In this way, you can avoid the drawbacks of using cable trenches for laying as you mentioned. However, two cable shafts need to be built at the entrance and exit of the intersection to facilitate maintenance and increase cable laying issues in the later stage of the project.

The above are some suggestions for preventing or solving the problem of water accumulation in cable trenches. Doing a good job in prevention can reduce unnecessary losses. Our company specializes in various types of cable protection pipes, filter pipes, cable clamps, and infiltration drainage pipes, gradually expanding to include supporting materials for pipelines in the power, communication, water conservancy and hydropower industries (such as pipe fittings, brackets, clamps, cover plates, etc.). Feel free to call us if you have any needs.