Characteristics of capillary discharge channel and its effect on concrete splitting-off by electro-blasting method
Электронный архив ТПУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Characteristics of capillary discharge channel and its effect on concrete splitting-off by electro-blasting method
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| Автор |
Kuznetsova, Nataliya Sergeevna
Yudin, Artem Sergeevich Voitenko, Nikita Valerievich |
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| Тематика |
характеристики
каналы капиллярные разряды расщепление бетоны электроструйная обработка численное моделирование ударные волны электрическая энергия плазменные каналы скважины |
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| Описание |
The numerical simulation results on fracture of a concrete block due to dynamic explosive loads applied to the walls of a blast hole are presented. The influence of the pulse shape on the shock-wave dynamics is considered. A comparison of mechanical stresses in direct and reflected pressure waves induced in the concrete block by explosion pulses of various durations and amplitudes shows that the shorter pulses with higher amplitudes and steeper rise times provide a higher blasting efficiency. The wire application for the discharge initiation enables the operating voltage of the generator to decrease, the discharge gap to increase, and hence, the channel energy to lead to the demolition build-up at electro burst. The significant dependence of the stress-wave profile on the pressure pulse wave shape at the borehole wall, which is determined by the rate of electrical energy release in the plasma channel, has been shown. An analysis of the stress-wave dynamics has shown that the rapid power deposition into a plasma channel tends to shift an amplitude of the tangential stresses in a reflected wave to the higher values and to extend the region of tensile tangential stresses initiating the main crack propagation from the borehole walls to a free material surface.
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| Дата |
2017-06-08T04:19:01Z
2017-06-08T04:19:01Z 2017 |
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| Тип |
Conference Paper
Published version (info:eu-repo/semantics/publishedVersion) Conference paper (info:eu-repo/semantics/conferencePaper) |
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| Идентификатор |
Kuznetsova N. S. Characteristics of capillary discharge channel and its effect on concrete splitting-off by electro-blasting method / N. S. Kuznetsova, A. S. Yudin, N. V. Voitenko // Journal of Physics: Conference Series. — 2017. — Vol. 830 : Energy Fluxes and Radiation Effects 2016 : 5th International Congress, 2–7 October 2016, Tomsk, Russian Federation : [materials]. — [012043, 7 p.].
http://earchive.tpu.ru/handle/11683/39477 10.1088/1742-6596/830/1/012043 |
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| Язык |
en
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| Связанные ресурсы |
Journal of Physics: Conference Series. Vol. 830 : Energy Fluxes and Radiation Effects 2016. — Bristol, 2017.
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Издатель |
IOP Publishing
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