Study on Pretension Loss of Cables Applied in Mine

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Abstract:

Pretension is the critical factor for cable supporting, but phenomenon of pretension loss exists in engineering practices. Tests of pretension loss carried out in Luan Zhangcun Mine show that the length and diameter of cables, anchorage, and degree of tension, tensioning equipments, and other factors will affect pretension loss of cables; the appropriate solution to reduce pretension loss is proposed. Ultra-tensioning 25% can ensure that the pretension meets the design requirements.

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1055-1059

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October 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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