Shear mechanical behavior and fracturing path of red sandstone treated by joninted effect of water-fractures

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外文摘要：Water content and primary fractures can change the mechanical characteristics of rock,making it easy to induce geological disasters.Therefore,direct shear tests of red sandstone under the action of water-fracture were carried out in this paper.The results show that shear strength of rock samples with fractures is less than that of intact rock samples.With the increase of primary fracture dip angle,shear strength and macroscopic crushing area of the rock sample increases first and then decreases with 20° as the boundary.It shows that the primary fractures weaken the shear mechanical properties and change the mac-roscopic failure mode.The shear performance of water-bearing rock samples is weaker than that of intact rock samples,and the weakening degree of water-saturated on shear performance of rock samples is lower than that of unsaturated water state.The fracture surfaces of rock samples are divided into'shortest path single through type','longest path single through type'and'cross path through type'.The failured rock samples are divided into'single through type'and'cross through type'.The research results can provide reference for geological disaster management under relevant conditions.

外文关键词：

Water contentShear performanceShear failureCrushing areaFracture path

作者：

Yangyang Li、Huicong Zhu、Shichuan Zhang、Bing Chen、Buchu Zhang

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作者单位：

State Key Laboratory of Mining Disaster Prevention and Control Co-Founded,Shandong University of Science and Technology,Qingdao 266590,China

College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China

School of Emergency Management and Safety Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China

State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,Beijing 102209,China

School of Civil Engineering,Shandong University,Jinan 250100,China

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出版年：

2024

DOI：

10.1007/s40789-024-00726-5

国际煤炭科学技术学报(英文)

CSTPCD

ISSN：2095-8293

年,卷(期)：2024.11(6)