Geomechanics and Engineering

  • 제17권4호
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  • Pages.323-331
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental study of crack propagation of rock-like specimens containing conjugate fractures

  • Sun, Wenbin (State Key Laboratory of Mining Disaster Prevention and Control, College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Du, Houqian (State Key Laboratory of Mining Disaster Prevention and Control, College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Zhou, Fei (State Key Laboratory of Mining Disaster Prevention and Control, College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Shao, Jianli (State Key Laboratory of Mining Disaster Prevention and Control, College of Mining and Safety Engineering, Shandong University of Science and Technology)
  • 투고 : 2018.11.21
  • 심사 : 2019.02.19
  • 발행 : 2019.03.20
⟨ 이전 논문 다음 논문 ⟩

초록

The presence of defects in nature changes the physical parameters of the rock. In this paper, by studying the rock-like specimens with conjugated fractures, the horizontal angle and length are changed, and the physical parameters and failure modes of the specimens under uniaxial compression test are analyzed and compared with the results of simulation analysis. The experimental results show that the peak strength and failure mode of the rock-like specimens are closely related to the horizontal angle. When the horizontal angle is $45^{\circ}$, the maximum value is reached and the tensile failure mode is obtained. The fracture length affects the germination and propagation path of the cracks. It is of great significance to study the failure modes and mechanical properties of conjugated fracture rock-like specimens to guide the support of fractured rock on site.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Postdoctoral Science Foundation

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