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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.28 No.1
- 발행연도
- 2021.1
- 수록면
- 143 - 152 (10page)
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초록· 키워드
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The propagation mechanism of blast waves in rock materials is hard to test. This paper explores the propagation mechanism of blast-induced strain waves in coal and rock using physical modeling together with numerical modeling. The results show that the strain waves in coal blocks were weaker than that in mortar blocks under the same blast loading. With increasing distance, the strain waves induced by the shock wave show a slighter decrease in coal blocks in the radial direction, but show a stable tendency in coal blocks and a slight decrease in mortar blocks in the tangential direction. However, the strain waves induced by the explosion gas show a stable tendency in both coal and mortar blocks. The actuation duration of strain waves in coal blocks is longer than that in mortar blocks. The gap of the radial strain waves induced by shock waves is narrowed gradually and moved similarly equal to each other both in coal and mortar blocks with increasing distance. The simulated results show similar values in coal and mortar blocks as compared with the test results. The coal blocks have a better fracturing effect than that of the mortar blocks in the physical test.
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참고문헌 (16)
참고문헌 신청
M.R. Ajamzadeh / 2018 / The effect of micro parameters of PFC software on the model calibration / Smart Structures and Systems, An International Journal 22(6):643~662
Marco Barla / 2012 / Rock Slide Simulation with the Combined Finite-Discrete Element Method / International Journal of Geomechanics 12(6):711~721
Zhan-bo Cheng / 2020 / Laboratory investigation of the mechanical properties of coal-rock combined body / Bulletin of Engineering Geology and the Environment 79(4):1947~1958
S.H. Cho / 2008 / Numerical study of fracture plane control in laboratory-scale blasting / Engineering Fracture Mechanics 75(13):3966~3984
Gérard Gary / 1998 / Behaviour of quasi-brittle material at high strain rate. Experiment and modelling / European Journal of Mechanics - A/Solids 17(3):403~420
Marco Barla / 2012 / Rock Slide Simulation with the Combined Finite-Discrete Element Method / International Journal of Geomechanics 12(6):711~721
Zhan-bo Cheng / 2020 / Laboratory investigation of the mechanical properties of coal-rock combined body / Bulletin of Engineering Geology and the Environment 79(4):1947~1958
S.H. Cho / 2008 / Numerical study of fracture plane control in laboratory-scale blasting / Engineering Fracture Mechanics 75(13):3966~3984
Gérard Gary / 1998 / Behaviour of quasi-brittle material at high strain rate. Experiment and modelling / European Journal of Mechanics - A/Solids 17(3):403~420
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