Stress optical cable underground laying and protection method used for transformer substation foundation displacement monitoring

Abstract

The invention provides a stress optical cable underground laying and protection method used for transformer substation foundation displacement monitoring. According to the method, one end of the stress optical cable is buried in the deep soil and the bedrock of the transformer substation through a pile hole so as to monitor the specific area of foundation settlement; then the rest part of the stress optical cable is buried in the soft soil layer of the superficial layer of the surface so as to monitor the soil tangential deformation and the water and soil erosion, wherein the stress optical cable is buried in the ground through the pile hole, then the pile hole is backfilled by using the artificial filler until the artificial filler completely covers the bending part of the optical cable under the condition of ensuring that the optical fiber signal in the optical cable is normal, then the pile hole is filled by using the fine sand and finally the pile hole is backfilled by using the soil material; meanwhile, the soil of the superficial layer is excavated by using the U-shaped groove when the stress optical cable is buried in the soft soil layer of the superficial layer of the surface, the fine sand is laid on the groove bottom, then the stress optical cable is laid, then the artificial filler is laid to cover the stress optical cable and finally the stress optical cable is buried by using the soil.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and mitigation in electric power systems, and more specifically, relates to an underground laying and protection method for stressed optical cables used for substation foundation displacement monitoring. Background technique [0002] Power substation is an important hub of power energy transmission and conversion, and also a key infrastructure facility of the national energy network. In the past, substations were usually located in areas with solid foundations and high terrain. With the development of economy and society, land resources are decreasing day by day, more and more plains, tidal flats, and low-lying areas are being developed and utilized, and substations in cities and adjacent cities have to be built in areas that were not suitable for building stations. What followed was that the problem of substation foundation settlement became increasingly prominent, especially in the ...

AI Technical Summary

Problems solved by technology

At the same time, these areas are rainy in summer, and the rainwater penetrates into the geological erosion of substations, leading to geological disasters such as soil erosion, cracking and collapse of the ground, which will also pose a potential threat to the operation of substations and affect the safe and stable operation of the power grid.

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