The Analysis of the Water-Expanded Rock Bolts Ruptures During Pressure Test-Reference-Cited by-同舟云学术

The Analysis of the Water-Expanded Rock Bolts Ruptures During Pressure Test

Published:2017-06-27 Issue:2 Volume:62 Page:423-430
ISSN:1689-0469
Container-title:Archives of Mining Sciences
language:
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Author:

Pawłowski Bogdan,Krawczyk Janusz,Bała Piotr,Cios Grzegorz,Tokarski Tomasz

Abstract

AbstractThis paper describe the investigation of a water-expanded rock bolts failed during pressure test (inner water pressure of 330 bar). A main objective of this work was to determine the cracks nucleation and propagation mechanism. It was found that the rock bolts failure was promoted by presence of non-metallic inclusions (mainly long sulphide inclusions) but the primary cause of cracking is strain ageing of steel. Suggestions for improving the behaviour of steel used for water-expanded rock belts by the modification of its chemical composition are proposed finally.

Publisher

Walter de Gruyter GmbH

Link

http://www.degruyter.com/view/j/amsc.2017.62.issue-2/amsc-2017-0032/amsc-2017-0032.pdf

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