Microbiologically influenced stress corrosion cracking responsible for catastrophic failure of cable bolts

被引：20

作者：

Chen, Honghao ^{[1
]}

Kimyon, Onder ^{[2
]}

Ramandi, Hamed Lamei ^{[1
]}

Craig, Peter ^{[3
]}

Gunawan, Cindy ^{[4
]}

Wu, Saisai ^{[5
]}

Manefield, Mike ^{[2
]}

Crosky, Alan ^{[6
]}

Saydam, Serkan ^{[1
]}

机构：

[1] UNSW Sydney, Sch Minerals & Energy Resources Engn, Sydney, NSW 2052, Australia

[2] UNSW Sydney, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

[3] Jennmar Australia Pty Ltd, Sydney, NSW, Australia

[4] Univ Technol Sydney, Ithree Inst, Sydney, NSW 2007, Australia

[5] XAUAT, Sch Resources Engn, Xian 710055, Peoples R China

[6] UNSW Sydney, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

来源：

ENGINEERING FAILURE ANALYSIS | 2022年 / 131卷

基金：

澳大利亚研究理事会;

关键词：

Cable bolts; Hydrogen induced stress corrosion cracking; Cold-drawn high-carbon steel wires; Microbiologically influenced stress corrosion; cracking; Sulphate-reducing bacteria; SULFATE-REDUCING BACTERIA; CARBON-STEEL; HYDROGEN EMBRITTLEMENT; LOW-ALLOY; BEHAVIOR; REDUCTION; ROCKBOLTS; STRAIN; GROWTH;

D O I：

10.1016/j.engfailanal.2021.105884

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the past two decades, reports of the premature failure of cable bolts used in the mining and civil industries have been increasing. Previous studies have established that failure occurs through hydrogen-induced stress corrosion cracking (HISCC), which is a type of environmentally assisted hydrogen cracking. However, to date, the cause of HISCC has been unclear. For the first time, we studied the role of microorganisms in the failure of cable bolts using components present in SCCaffected mines. Stressed coupons were prepared from the cable bolt wires and tested in groundwater with additions of sulphate-reducing bacteria, coal, clay, pyrite and lactate. It was found that hydrogen sulphide (H2S) produced by sulphate- and sulphur-reducing bacteria promoted hydrogen diffusion into the steel and, in the presence of stress, caused HISCC. This suggests that control of H2S production should be a priority for mining and civil industries to avoid premature failure of anchoring systems.

引用

页数：12