The influence of excavation of combined foundations of high-voltage transmission towers and spoils loading on landslide stability

With the construction of "West-to-East Power Transmission" and national networked engineering projects, high-voltage transmission towers, which are important components of transmission lines, are important power engineering facilities. They are inevitably erected on the ridges, edges of st...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-03, Vol.780 (4), p.42041
Main Authors: Yingbo, Zhou, Hang, Chen, Qiupeng, Zhou, Zhiqiang, Duan, Xiaojing, Gao, Lisong, Gao, Yongqiang, Zhou
Format: Article
Language:English
Subjects:
Electric power grids
Electricity distribution
Excavation
Foundations
High voltages
Landslides
Landslides & mudslides
River banks
Stability
Transmission lines
Transmission towers
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Summary:With the construction of "West-to-East Power Transmission" and national networked engineering projects, high-voltage transmission towers, which are important components of transmission lines, are important power engineering facilities. They are inevitably erected on the ridges, edges of steep slopes, and river banks. Therefore, induced by internal factors and external factors, it is easy to cause landslide disasters in these areas, resulting in power grid accidents such as tilting of power poles, disconnections, and trips. This article takes the Yanzi landslide in Badong County and 500kV transmission tower on the landslide as the research object. For the combined foundation excavation form of the tower foundation, the relative positions of different tower foundations and landslides and the loading of spoil are analyzed. The influence of excavation of transmission tower foundation and pile dumping on the stability of the landslide is discussed. The research results show that the effect of the combined foundation excavation on the stability of the landslide is negligible, but it will affect the stability of the local landslide, and the stability of the local landslide is related to the relative position of the tower foundation and the landslide. In addition, the pile loading of spoil will also affect the stability of local landslides, and the degree of impact is related to the size of the spoil pile.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/780/4/042041