Study on the fracture propagation of ground fissures with syn-depositional structure in Fenwei Basin, China

In Fenwei Basin, most of the tectonic ground fissures show characteristics of growth faults on the section. They continue to destroy the engineering properties of soil at different depths. This has introduced significant security risks to the construction processes of deep underground spaces. Howeve...

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Bibliographic Details
Published in:Scientific reports 2024-05, Vol.14 (1), p.10850-10850, Article 10850
Main Authors: Lu, Quanzhong, Li, Cong, Liu, Rendao, Sun, Yuemin, Mao, Xinyu, Chen, Feilong
Format: Article
Language:English
Subjects:
704/2151/213
704/2151/3930
704/2151/562
704/4111
Bone healing
Construction industry
Fenwei Basin
Fracture propagation
Humanities and Social Sciences
multidisciplinary
Physical simulation test
Propagation
Science
Science (multidisciplinary)
Soil profiles
Soil properties
Syn-depositional ground fissure
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Summary:In Fenwei Basin, most of the tectonic ground fissures show characteristics of growth faults on the section. They continue to destroy the engineering properties of soil at different depths. This has introduced significant security risks to the construction processes of deep underground spaces. However, there are few studies have been conducted on syn-depositional ground fissures. Therefore, in this study, a physical simulation test was used to study the fracture propagation of syn-depositional ground fissures. The characteristics of sections and surface fractures were analyzed. The engineering properties of model soil were divided into bad and poor areas. The syn-depositional ground fissure fracture propagation process was divided into five phases. The results show that soil profile exhibited a composite Y-shaped fracture morphology. Syn-deposition affects the fracture angle and healing state of fractures. The soil strain and surface displacement were positively correlated with the number of deposition layers. The conclusions of this study provide a theoretical geological basis and practical engineering significance for design of deep underground space structures.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-61657-4