Cable fixing method and device at connecting position of cable shaft well and cable tunnel

Abstract

The invention provides a cable fixing method at a connecting position of a cable shaft well and a cable tunnel. According to the method, a supporting plane of fixing media is adjusted, so that the supporting is fit with a cable accommodating plane to fix cables and prevent the cables from large bending and non-uniform bearing. The invention also provides a cable fixing device. The cable fixing device comprises a group of support, each group of support comprises columns and fixing media between the columns, the columns are arranged between cable tunnels of a transitional area, and at least three fixing media are arranged so that the cable accommodating plane is fit with the supporting plane. The cables are effectively, rapidly and conveniently fixed at the connecting position of the cables, the cables are effectively protected, the construction safety is improved, and the construction cost is reduced. The cable fixing device is high in versatility, high in flexibility and convenient to operate and use, so that transition of cables from the cable tunnels to the cable shaft well is realized, and cables are rapidly and stably laid in construction.

Description

technical field [0001] The invention relates to the technical field of electric power transmission and distribution construction, and more specifically, relates to a cable fixing method at the junction of a cable shaft and a cable tunnel and a fixing device used therefor. Background technique [0002] In the laying technology of underground cables in the field of power transmission and distribution, the combination of setting cable shafts in the vertical direction and opening cable tunnels in the horizontal direction is usually used to realize the underground cable penetration. A bracket will be used at the connection to solve the problem of transitional fixing of the cable at the connection between the two. [0003] At the current stage, the construction technology of laying cables in power tunnels will face the following two major problems: [0004] ① With the rapid growth of power demand, the gradual increase of cable capacity also makes the diameter of the cable thicker...

AI Technical Summary

Problems solved by technology

[0004] ① With the rapid growth of power demand, the cable capacity gradually increases, which also makes the cable diameter thicker; and the number of cable outlet circuits in the cable tunnel is large, and the cable lines are not constructed at the same time

However, using the current method to solve the matching problem of the bracket and the cable reduces the versatility of the bracket and narrows the scope of application of the bracket to a certain extent, which leads to an increase in resource investment and a prolongation of construction time, and also affects to a certain extent The layout space for the laying of cables in the later stage, and the stress on the cables cannot be calculated, so there are potential safety hazards

[0006] ②Due to the large height difference between the cable tunnel and the ground, the turning of the cable when it enters and exits the cable shaft is relatively rapid, resulting in insufficient right-angle turning space for the cables laid later at the point where the cable tunnel turns to the cable shaft; Occupies space, so that the diameter of the cable shaft has a certain limit, so the diameter of the cable shaft with size restrictions is difficult to meet the requirements of the cable turning radius during cable laying, which directly affects the laying and safe operation of the cable line

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