Controlling technology of corrosion of underground anchor net support material

WANG Xiaolong; CHANG Jianhong; PAN Jin; ZHAO Liqun; SHI Hongkai; WEI Ziliang; LI Chao; YOU Xin; XIE Ao; KONG Lingpo; LIU Lizong

Safety in Coal Mines > 2022 > 53(8): 104-111,119.

WANG Xiaolong, CHANG Jianhong, PAN Jin, ZHAO Liqun, SHI Hongkai, WEI Ziliang, LI Chao, YOU Xin, XIE Ao, KONG Lingpo, LIU Lizong. Controlling technology of corrosion of underground anchor net support material[J]. Safety in Coal Mines, 2022, 53(8): 104-111,119.

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Controlling technology of corrosion of underground anchor net support material

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Published Date: August 19, 2022

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Abstract

Steel mesh supporting material（SMS） faces serious corrosion risks at underground application in the high-humidity environment of Shendong Coal Group Company. It’s better to supply a proper and onsite-suitable technology for protecting SMS from corrosion at coal roadway situation. In this paper, a kind of anti-rust oil which featured with non-volatile, fine fluidity, strong adsorption effect and excellent demulsification is proposed as a coating material for SMS. The research results show that the SMS with anti-rust oil layer can show obvious protective and stable effect in the simulated corrosion situations include humid, immersed and spraying water environment from coal roof. Furthermore, the corrosion rates of SMS decreased stably at below 0.005 mm/a by electrochemical test when anti-rust oil equipped with cross section and corrosion surface of SMS on active service. By applying self-developed anti-rust oil to the in-service SMS that have been corroded in the roadway, the corrosion process can be effectively inhibited, and its service life can be prolonged.
- steel mesh support,
- anti-rust oil,
- humid environment,
- coating on corrosion surface,
- corrosion of support material

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