Zhujiang Cable's first 35 kV cable project speeds up construction

In the dark and damp cable tunnel 11 meters deep, 2.5 meters wide, 65 meters long from the surface, we saw that four construction workers were using pneumatic picks to excavate, and at the same time, electric power construction workers were also stepping up their efforts. The excavated weathered stone was transported out of the tunnel in time. In the narrow space surrounded by the cable jacking pipe, the rumbling air picks sounded unusually harsh, and the air seemed extremely thin, making people feel breathless.

The 35kV Fuzhuang line cable tunnel crossing project is an important measure taken to meet the local government's cable deployment requirements. After the project is completed and put into use, the 35kV Fuzhuang Line, 110kV Bagang Line, Guohong 110kV Line and other lines above 35kV can be integrated into the tunnel at the same time, which not only effectively solves the power transmission of the 220kV Bali Substation Line Problems such as the tightness of lines and channels have also greatly improved the level of scientific planning of urban power grids, and the safety and reliability of power grids have continued to improve.

According to Sun Huaiyong, the person in charge of the project and the manager of the installation company of the Zoucheng Power Supply Company, the cable tunnel crossing project is far from the ground and the underground is full of weathered stones and the stones are hard, which brings great difficulties to the excavation work. The jackhammer excavates. At the same time, the water accumulation in the tunnel is serious, and in the flood season, it must be pumped continuously for 24 hours. Once the pumping operation is stopped, the accumulated water will not reach the knees, which is bound to seriously affect the construction progress. In addition, the cable jacking pipe saved 2.5 meters and weighed 11.5 tons. They used hydraulic machines to install the continuous backlog of the cable jacking pipe while digging. The project was time-consuming and laborious, and the construction was difficult.

As the first 35 kV cable tunnel crossing project in Zoucheng City, in order to ensure the smooth construction of the project, Zoucheng City Power Supply Company organized a specialized professional team to conduct site surveys in advance and formulate a scientific construction plan. In terms of safety measures, two safety fences have been set up to ensure the safety of pedestrians. Strictly implement safety supervision and supervision measures during the construction process, and implement safety equipment in place. Preparatory work was made in advance for the pumping, lighting and other facilities of the cable tunnel to ensure the smooth progress of the project. In order to speed up the construction progress, the power supply company has carried out a scientific deployment of construction force allocation and personnel composition, divided into 4 working groups, 24 hours of uninterrupted construction operations, to the greatest extent possible to ensure the completion of the project on schedule.

According to reports, the 35-kilovolt Fuzhuang line cable tunnel traversal project has a total of 30 cable jacking pipes installed, the total length of the tunnel is 80 meters, and the laying of cables is 8,400 meters. At present, the construction of the tunnel has been basically completed, and the next step will be transferred to the stage of cable laying, which is expected to be completed in early September.