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Shear Mechanical Properties and Fracture Mechanism of Sandstone Containing Intersecting Fractures
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Erhui MA1, 2, Zhen YU1, 2, Hongtao YE1, 2, Rongzhou ZHANG3, Xianpeng ZHUANG3
Mining and Metallurgical Engineering | 2026, 46(4) : 74 - 80
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Mining and Metallurgical Engineering | 2026, 46(4): 74-80
• MINING •
Shear Mechanical Properties and Fracture Mechanism of Sandstone Containing Intersecting Fractures
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Erhui MA1, 2, Zhen YU1, 2, Hongtao YE1, 2, Rongzhou ZHANG3, Xianpeng ZHUANG3
Affiliations
  • 1.Shen Kan Qinhuangdao General Engineering Design & Research Institute Corporation, MCC, Qinhuangdao 066000, Hebei, China
  • 2.Hebei Green Smart Mine Design Technology Innovation Center, Qinhuangdao 066000, Hebei, China
  • 3.School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
doi: 10.3969/j.issn.0253-6099.2026.04.010
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The shear mechanical behavior of red sandstone specimens with prefabricated V-shaped fractures was systematically investigated via laboratory shear tests and numerical simulations, from the perspectives of strength parameters, crack-initiation locations, coalescence modes and stress-field evolution. The results show that the deterioration of internal friction angle and cohesion of specimens is the most significant when the crack opening angle α=110° and azimuth angle β=0°. The finally formed fracture surfaces with coalescence in specimens are parallel to the shear direction, whereas the crack-initiation locations are strongly controlled by the azimuth angle β. The stress-field distribution shows clear zoning behavior:the low-stress zone presents an inclined S shape, while high-stress and shear-stress zones concentrate at fracture tips and end boundaries. From the mesoscopic perspective, principal stresses dominate the development of wing fractures, and the coupled compression-shear effect is the fundamental cause for the generation of secondary fractures.

rock mechanics  /  sandstone  /  fracture  /  intersecting fracture  /  shear mechanics  /  failure mode  /  stress field  /  fracture mechanism
马二辉, 于振, 叶洪涛, 张荣洲, 庄贤鹏. 含相交裂隙砂岩剪切力学特性及断裂机理研究. 矿冶工程杂志, 2026 , 46 (4) : 74 -80 . DOI: 10.3969/j.issn.0253-6099.2026.04.010
Erhui MA, Zhen YU, Hongtao YE, Rongzhou ZHANG, Xianpeng ZHUANG. Shear Mechanical Properties and Fracture Mechanism of Sandstone Containing Intersecting Fractures[J]. Mining and Metallurgical Engineering, 2026 , 46 (4) : 74 -80 . DOI: 10.3969/j.issn.0253-6099.2026.04.010
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Year 2026 volume 46 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.04.010
  • Receive Date：2026-02-26
  • Online Date：2026-10-08
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  • Received：2026-02-26
Funding
Affiliations
    1.Shen Kan Qinhuangdao General Engineering Design & Research Institute Corporation, MCC, Qinhuangdao 066000, Hebei, China
    2.Hebei Green Smart Mine Design Technology Innovation Center, Qinhuangdao 066000, Hebei, China
    3.School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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