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failure mechanisms of concrete-bolt attachment surface: impact of cable bolt indent number and shape
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نویسنده
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sarfarazi vahab ,zhou lei ,haeri hadi ,salehipour parastou ,elahi ali ,moayer ali ,fatehi marji mohammad
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منبع
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journal of mining and environment - 2025 - دوره : 16 - شماره : 1 - صفحه:223 -239
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چکیده
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The mechanical behavior of rock-rock bolt interface considering the effects of indents’ shape and their number was numerically simulated based on discrete element method using the two-dimensional particle flow code. the conventional and standard uniaxial compressive and brazilian tensile strengths tests were used to calibrate the modelled samples with 100 cm 100 cm in dimension. the numerical models were prepared such that different indent shape and number were inserted in the cable bolts arrangements during the rock reinforcement process. the effects of confining pressure 3.7 mpa and different shear failure loads were modeled for the punch shear test of the concrete specimens. the results of this study showed that the dominant failure mode of the rock-cable bolt interface was of tensile mode and the shape and number of cable indents significantly affected the strength and mechanical behavior of the modelled samples. it has also been showed that the indent dimensions and number affected the shear strength of the interfaces.
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کلیدواژه
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tensile strength ,rock bolt indent shape ,interface ,discrete element method
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آدرس
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hamedan university of technology, department of mining engineering, iran, southwest petroleum university, state key laboratory of oil and gas reservoir geology and exploitation, china. sichuan university, college of architecture and environment, state key laboratory of intelligent construction and healthy operation and maintenance of deep underground engineering, china, shahid bahonar university of kerman, higher education complex of zarand, department of mining engineering, iran, west virginia university, school of natural resources and the environment, usa, shahid bahonar university of kerman, higher education complex of zarand, department of mining engineering, iran, islamic azad university, shiraz branch, department of civil engineering, iran, yazd university, faculty of mining and metallurgy, institute of engineering, department of mine exploitation engineering, iran
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پست الکترونیکی
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mohammad.fatehi@gmail.com
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Authors
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