Monitoring analysis and deformation model of the resilience of strong expansive rock canal base in South-to-North Water Transfer Project
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Abstract:
The study on the resilience deformation rule of canal base in the process of canal excavation has a guiding significance to the canal floor construction. With the improved layered settlement instrument equipped with induction ring, we measured the maximum resilience of the canal base caused by secondary canal excavation to be 102 mm, and established a resilience deformation model, and analyzed quantitatively the contribution degree of each impact factor to the resilience deformation. The results showed that the excavation unloading was the main impact factor of canal base resilience deformation, accounting for about 74% of the total resilience. The canal floor resilience caused by time effect was only 2.43 mm in 5 months after being closed in December 2013. It had little influence on the floor structure, and was conducive to the safe running of the canal.
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