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Volume 33 Issue 4
Jul 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(4): 045901.
SONG Wei, XIE Dongsheng, HUANG Tiezheng, SUN Tao, LI Haitao, FAN Zhiqiang. De-Icing Power Line by Linear Shaped Explosive Blast[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 045901. doi: 10.11858/gywlxb.20180605
Citation: SONG Wei, XIE Dongsheng, HUANG Tiezheng, SUN Tao, LI Haitao, FAN Zhiqiang. De-Icing Power Line by Linear Shaped Explosive Blast[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 045901. doi: 10.11858/gywlxb.20180605
shu

De-Icing Power Line by Linear Shaped Explosive Blast

doi: 10.11858/gywlxb.20180605
  • 1.

    Economic Research Institute of State Grid Shanxi, Taiyuan 030051, China

  • 2.

    School of Science, North University of China, Taiyuan 030051, China

  • Received Date: 25 Jul 2018
  • Rev Recd Date: 21 Aug 2018
    Abstract
  • To control the risk of disaster that may be caused by ice-coated power line, a novel de-icing method by applying linear shaped explosive blast has been proposed in the past decade. To investigate the mechanism and the key technology, blast tests on short ice-coated power line are performed as well as corresponding LS-DYNA simulations. The effects of blast parameters on de-icing efficiency are also discussed. Results show that, ice on the blast side immediately crush while through-wall cracks appear in the other side ice which then fractures or falls from the line. The blast energy rapidly attenuates from the weakly constrained side of ice when the detonation cord is placed outside of the ice. As a consequence, in order to de-ice with high efficiency, the gap between conductor and detonation cord should be optimized according to estimation ice coating thickness to ensure that the detonation cord is located within the ice coating.

     

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