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evaluation of deformation characteristics of brittle rocks beyond the limit of strength in the mode of uniaxial servohydraulic loading
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نویسنده
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gospodarikov alexander p. ,trofimov andrey v. ,kirkin alexander p.
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منبع
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journal of mining institute - 2022 - دوره : 256 - شماره : 0 - صفحه:539 -548
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چکیده
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One of the most reliable methods for assessing the physical and mechanical properties of rocks as a result of their destruction are laboratory tests using hard or servo-driven test presses. they allow to obtain reliable information about changes in these properties beyond the limit of compressive strength. the results of laboratory tests of rich sulfide ore samples are presented, which made it possible to obtain graphs of their extreme deformation. both monolithic samples and samples with stress concentrators in the form of circular holes with a diameter of 3, 5 and 10 mm were tested. it was revealed that during the destruction of the samples, the modules of elasticity and deformation decrease by 1.5-2 times, and in the zone of residual strength – by 5-7 times.
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کلیدواژه
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physical and mechanical properties ,laboratory tests ,extreme deformation ,servohydraulic test presses ,lateral deformations ,modulus of elasticity ,modulus of deformation
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آدرس
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saint petersburg mining university, russia, ooo gipronikel institute, russia, saint petersburg mining university, russia
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پست الکترونیکی
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s195056@stud.spmi.ru
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оценка деформационных характеристик хрупких горных пород за пределом прочности в режиме одноосного сервогидравлического нагружения
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Authors
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господариков а. ,трофимов а. ,киркин а.
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Keywords
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физико-механические свойства، лабораторные испытания، запредельное деформирование، сервогидравлические испытательные прессы، поперечные деформации، модуль упругости، модуль деформации،
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