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Influence of lithology and bedding orientation on failure behavior of “D” shaped tunnel

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成果类型:
期刊论文
作者:
Si, Xuefeng;Luo, Yong;Luo, Song
通讯作者:
Luo, S
作者机构:
[Luo, Yong; Si, Xuefeng] Univ South China, Sch Resources Environm & Safety Engn, Hengyang 421001, Peoples R China.
[Luo, Song; Luo, S; Si, Xuefeng] Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China.
通讯机构:
[Luo, S ] C
Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China.
语种:
英文
关键词:
"D" shaped tunnel;Bedding angle;Lithology;Mineral component;Rockburst
期刊:
Theoretical and Applied Fracture Mechanics
ISSN:
0167-8442
年:
2024
卷:
129
页码:
104219
基金类别:
National Natural Science Foundation of China [52304227, 52104133]; National Key Research and Development Program of China - 2023 Key Special Project [2023YFC2907400]; Research Project of Education Department of Hunan Province [22B0426, 20C1623]; Natural Science Foundation of Hunan Province [2023JJ40548, 2021JJ40465]; Scientific and Technological Research Platform for Disaster Prevention and Control of Deep Coal Mining (Anhui University of Science and Technology) [DPDCM2208]
机构署名:
本校为第一机构
摘要:
To explore the influence of lithology on the failure behavior of layered tunnel, true triaxial compression experiments were undertaken on cubical phyllite and yellow sandstone samples containing a “D” shaped hole. The failure progress of the hole sidewalls was monitored and captured using a miniature camera. The results reveal that the initial vertical failure stress of the phyllite samples presents a “U” shaped change as the bedding angle increases. At the bedding angle of 45°, compared with the initial vertical failure stress of the yell...

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