کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
809383 1468688 2016 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Examination of rockbolt stress corrosion cracking utilising full size rockbolts in a controlled mine environment
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موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Examination of rockbolt stress corrosion cracking utilising full size rockbolts in a controlled mine environment
چکیده انگلیسی

Previous studies had identified that a testing protocol was required to examine stress corrosion cracking (SCC) of full sized rockbolts under simulated in situ conditions. As a result, a load frame capable of inducing both tensile and bending loads on a rockbolt specimen, erected within a controlled mine environment (CME) laboratory was constructed. The newly designed and purpose built Bend and Tension Loading Apparatus (BaTLA) was used to conduct both static and slow strain rate (SSR) tests on rockbolt specimens in an acidified sodium chloride solution containing hydrogen sulphide in the CME. It was found that SSR testing provided an appropriate analogue for examining rockbolt susceptibility to SCC and was thus used to examine the effect of grit blasting, galvanising and varying steel grades on the SCC resilience of rockbolts. Of these, 300 grade steel and galvanising provided the most promising resistance to SSC, while grit blasting provided a 40% improvement in resistance compared to untreated HSAC 840 grade rockbolts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 81, January 2016, Pages 86–95
نویسندگان
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