Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental research on the mechanical properties and energy transfer of fractured granite under triaxial loading
https://orcid.org/0000-0002-8541-4020
Abstract The original rock taken from underground powerhouses of Shuangjiangkou Hydropower Station in south-west China was employed to prepare granite samples containing fractures with different dip angles, widths, and lengths. On this basis, the failure process of rock samples with different shapes of fractures under triaxial loading was investigated; furthermore, the mechanical properties, failure mode, and energy transfer of fractured granite under triaxial loading were revealed. The results showed that a significant post-peak stress drop occurs, and the stress then slowly decreases in the form of repeated drops and increases under triaxial compression. The larger the fracture width, the greater the stress drop; with increasing fracture length, the peak stress decreases and the stress varies from slow, fluctuating reduction to abrupt reduction in the post-peak stage. The failure angle of fractured granite grows with the increase of the confining pressure; as the fracture length increases, X-shaped shear failure mode is gradually prominent and the pre-fabricated fractures more significantly dominate the failure mode; at the dip angle within 0 to 60°, the samples are mainly subjected to X-shaped shear failure. The energy storage limit of fractured granite linearly increases with the increase of the confining pressure while linearly decreases with the increase of the fracture length, and it first decreases, and then increases with increasing fracture dip angle.
Experimental research on the mechanical properties and energy transfer of fractured granite under triaxial loading
https://orcid.org/0000-0002-8541-4020
Abstract The original rock taken from underground powerhouses of Shuangjiangkou Hydropower Station in south-west China was employed to prepare granite samples containing fractures with different dip angles, widths, and lengths. On this basis, the failure process of rock samples with different shapes of fractures under triaxial loading was investigated; furthermore, the mechanical properties, failure mode, and energy transfer of fractured granite under triaxial loading were revealed. The results showed that a significant post-peak stress drop occurs, and the stress then slowly decreases in the form of repeated drops and increases under triaxial compression. The larger the fracture width, the greater the stress drop; with increasing fracture length, the peak stress decreases and the stress varies from slow, fluctuating reduction to abrupt reduction in the post-peak stage. The failure angle of fractured granite grows with the increase of the confining pressure; as the fracture length increases, X-shaped shear failure mode is gradually prominent and the pre-fabricated fractures more significantly dominate the failure mode; at the dip angle within 0 to 60°, the samples are mainly subjected to X-shaped shear failure. The energy storage limit of fractured granite linearly increases with the increase of the confining pressure while linearly decreases with the increase of the fracture length, and it first decreases, and then increases with increasing fracture dip angle.
Experimental research on the mechanical properties and energy transfer of fractured granite under triaxial loading
https://orcid.org/0000-0002-8541-4020
Abstract The original rock taken from underground powerhouses of Shuangjiangkou Hydropower Station in south-west China was employed to prepare granite samples containing fractures with different dip angles, widths, and lengths. On this basis, the failure process of rock samples with different shapes of fractures under triaxial loading was investigated; furthermore, the mechanical properties, failure mode, and energy transfer of fractured granite under triaxial loading were revealed. The results showed that a significant post-peak stress drop occurs, and the stress then slowly decreases in the form of repeated drops and increases under triaxial compression. The larger the fracture width, the greater the stress drop; with increasing fracture length, the peak stress decreases and the stress varies from slow, fluctuating reduction to abrupt reduction in the post-peak stage. The failure angle of fractured granite grows with the increase of the confining pressure; as the fracture length increases, X-shaped shear failure mode is gradually prominent and the pre-fabricated fractures more significantly dominate the failure mode; at the dip angle within 0 to 60°, the samples are mainly subjected to X-shaped shear failure. The energy storage limit of fractured granite linearly increases with the increase of the confining pressure while linearly decreases with the increase of the fracture length, and it first decreases, and then increases with increasing fracture dip angle.
Experimental research on the mechanical properties and energy transfer of fractured granite under triaxial loading
Luo, Yi (Autor:in) / Xu, Kun (Autor:in) / Gong, Hangli (Autor:in) / Qu, Dengxing (Autor:in) / Li, Xinping (Autor:in) / Wang, Gang (Autor:in) / Li, Qiaoliang (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
Experimental Study on Mechanical and Energy Properties of Granite under Dynamic Triaxial Condition
| British Library Online Contents | 2018
Energy Evolution and Mechanical Features of Granite Subjected to Triaxial Loading-Unloading Cycles
| DOAJ | 2019