TY - JOUR
T1 - Two-section pulse current generator for concrete and rocks destruction by splitting off∗
AU - Yudin, Artem S.
AU - Voitenko, Nikita V.
AU - Kuznetsova, Natalia S.
N1 - Funding Information:
Manuscript received December 31, 2016; revised July 31, 2017; accepted September 24, 2017. Date of publication October 18, 2017; date of current version November 8, 2017. This work was supported by RFBR Project 16-48-700278. The review of this paper was arranged by Senior Editor W. Jiang. (Corresponding author: Artem S. Yudin.) The authors are with the Department of High Voltage Electrophysics and High Current Electronics, Tomsk Polytechnic University, Tomsk, Russia (e-mail: wm5@tpu.ru; tevn@hvd.tpu.ru).
Publisher Copyright:
© 1973-2012 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/11
Y1 - 2017/11
N2 - The relevance of electro-discharge technology usage for construction and demolition work in dense urban areas is discussed. The technical possibilities and the equipment based on a two-section pulse current generator for multiborehole electro-discharge splitting off and destruction of rocks and concrete are described. Ways to increase the efficiency of electro-discharge solid materials destruction method are proposed. To increase the effectiveness of the crack initiation, the high-current pulse should have a high rate of rising edge (practically well-founded 3-7 kA/. For crack propagation, the pulse duration should be as long as possible. (Good value is more than Achievement of such controversial requirements in one generator is not a trivial task. To solve this contradiction and to increase the discharge circuit energy, the separation of the storage energy into two capacitor batteries as well as doubling the capacitance has been done. The inductance of was installed in series with one battery section, which led to an increase in the channel energy release duration up to. To increase the pulse duration even further, a pulse delay between two batteries was implemented. It is shown that in modes with a triggering pause between the batteries, the tensile stresses are formed earlier and covered almost all the distance from the borehole to the free border and acted on this space for a longer period of time.
AB - The relevance of electro-discharge technology usage for construction and demolition work in dense urban areas is discussed. The technical possibilities and the equipment based on a two-section pulse current generator for multiborehole electro-discharge splitting off and destruction of rocks and concrete are described. Ways to increase the efficiency of electro-discharge solid materials destruction method are proposed. To increase the effectiveness of the crack initiation, the high-current pulse should have a high rate of rising edge (practically well-founded 3-7 kA/. For crack propagation, the pulse duration should be as long as possible. (Good value is more than Achievement of such controversial requirements in one generator is not a trivial task. To solve this contradiction and to increase the discharge circuit energy, the separation of the storage energy into two capacitor batteries as well as doubling the capacitance has been done. The inductance of was installed in series with one battery section, which led to an increase in the channel energy release duration up to. To increase the pulse duration even further, a pulse delay between two batteries was implemented. It is shown that in modes with a triggering pause between the batteries, the tensile stresses are formed earlier and covered almost all the distance from the borehole to the free border and acted on this space for a longer period of time.
KW - Discharge
KW - High-current generator
KW - Rocks splitting off
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U2 - 10.1109/TPS.2017.2761441
DO - 10.1109/TPS.2017.2761441
M3 - Article
AN - SCOPUS:85032178597
VL - 45
SP - 3042
EP - 3045
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 11
M1 - 8071163
ER -