Corrosion properties of ASTM A615 rock bolt steel in US underground coal mines

IF 1.8 Q3 MINING & MINERAL PROCESSING Mining Technology-Transactions of the Institutions of Mining and Metallurgy Pub Date : 2020-07-02 DOI:10.1080/25726668.2020.1788843

G. Bylapudi, K. Mondal, A. Spearing, A. Bhagwat

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引用次数: 1

Abstract

ABSTRACT Corrosion of rock bolts is a relatively slow process yet a potential problem for the underground mining industry. Mine groundwater in the strata through natural or mining-induced cracks together with the humid environment in the mine openings interact with the roof support systems often resulting in corrosion. Electrochemical studies of the commonly used rock bolt steel in the coal mining environments will lead to a better understanding of the material’s performance and their ability to resist corrosion. The influence of pH, solution resistivity, total dissolved solids, and aggressive ions on the electrochemical properties of rock bolt steel are discussed. This preliminary study focuses on understanding the corrosion potential, polarization resistance, and corrosion rates of the rock bolt steel that is most commonly used in US underground coal mines. Based on the findings, it was observed that the polarization resistance (Rp) is inversely proportional to the corrosion rate (CR) over time.

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美国地下煤矿用ASTM A615锚杆钢的腐蚀性能

锚杆腐蚀是一个相对缓慢的过程，但对地下采矿业来说却是一个潜在的问题。矿井地下水通过自然或采动裂隙进入地层，再加上井口内的潮湿环境与顶板支护系统相互作用，往往造成腐蚀。对煤矿环境中常用的锚杆钢进行电化学研究，将有助于更好地了解该材料的性能和抗腐蚀能力。讨论了pH、溶液电阻率、总溶解固形物和侵蚀性离子对锚杆钢电化学性能的影响。这项初步研究的重点是了解美国地下煤矿最常用的锚杆钢的腐蚀电位、抗极化能力和腐蚀速率。结果表明，随着时间的推移，极化电阻(Rp)与腐蚀速率(CR)成反比。

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来源期刊

Mining Technology-Transactions of the Institutions of Mining and Metallurgy MINING & MINERAL PROCESSING-

CiteScore

2.20

自引率

9.10%

发文量