Crack Propagation and Coalescence Mechanism of a Rock Bridge between a Parallel Fissure Pair in a Direct Shear Test with Unloading Normal Stress

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成果类型：

期刊论文

作者：

Guo, Yingquan;Huang, Da;Cen, Duofeng

通讯作者：

Huang, D

作者机构：

[Guo, Yingquan] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Peoples R China.

[Huang, Da] Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China.

[Cen, Duofeng] Ningbo Univ, Inst Rock Mech, Ningbo 315211, Peoples R China.

通讯机构：

[Huang, D ] C

Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China.

语种：

英文

关键词：

Analysis (by type);Bridge tests;Continuum mechanics;Cracking;Engineering fundamentals;Engineering mechanics;Failure analysis;Failure modes;Field tests;Flow (fluid dynamics);Fluid dynamics;Fluid mechanics;Forensic engineering;Fracture mechanics;Hydrologic engineering;Laboratory tests;Material mechanics;Material properties;Materials engineering;Shear failures;Shear flow;Shear strength;Shear stress;Shear tests;Solid mechanics;Strength of materials;Stress (by type);Structural analysis;Structural engineering;Tests (by type);Water and water resources

期刊：

International Journal of Geomechanics

ISSN：

1532-3641

年：

2024

卷：

期：

页码：

04023258

DOI：

10.1061/IJGNAI.GMENG-7626

基金类别：

The present work is supported by the National Natural Science Foundation of China (Nos. 41972297, 41807279), the Supporting program of hundred promising innovative talents in Hebei provincial education office (No. SLRC2019027), and the Natural Science Foun [41972297, 41807279]; National Natural Science Foundation of China [SLRC2019027]; Supporting program of hundred promising innovative talents in Hebei provincial education office [E2019202336]; Natural Science Foundation of Hebei Province

机构署名：

本校为第一机构

院系归属：

土木工程与建筑学院

摘要：

To investigate crack propagation and the coalescence mechanism of a rock bridge under unloading condition induced by intensive excavation of rock mass, the direct shear test with unloading normal stress and corresponding particle flow code (PFC) simulation were conducted on the sandstone specimen containing a parallel fissure pair considering different fissure inclinations (varied from 0 degrees to 90 degrees) and initial shear stresses (varied from 4 to 7 MPa). Three failure patterns (i.e., shear failure, tensile failure, and tensile-shear mixed failure) are identified as experimental and num...

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Crack Propagation and Coalescence Mechanism of a Rock Bridge between a Parallel Fissure Pair in a Direct Shear Test with Unloading Normal Stress

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