杭州湾沿岸大气中氯离子沉积速率检测与影响研究

王建乐; 蒋达飞; 李国杰; 徐强; 赵国栋; 张紫薇; 程万里

doi:10.7643/ issn.1672-9242.2024.06.018

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装备环境工程 ›› 2024, Vol. 21 ›› Issue (6) : 136-141. DOI: 10.7643/ issn.1672-9242.2024.06.018

环境试验与观测

杭州湾沿岸大气中氯离子沉积速率检测与影响研究

王建乐¹, 蒋达飞¹, 李国杰¹, 徐强^2*, 赵国栋¹, 张紫薇¹, 程万里¹

作者信息 +

Detection and Impact of Chloride Ion Deposition Rate in the Atmosphere at the Coast of Hangzhou Bay

WANG Jianle¹, JIANG Dafei¹, LI Guojie¹, XU Qiang^2*, ZHAO Guodong¹, ZHANG Ziwei¹, CHENG Wanli¹

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文章历史 +

摘要

目的探究杭州湾沿岸工程设施的腐蚀严酷度水平。方法选择3个临水检测点开展为期1 a的大气氯离子沉积速率检测,并分析季节、风向、方位、降雨量等对氯离子沉积速率的影响。结果 3个检测点的年均沉积速率都超过3 mg/(m²·d)。B检测点因方位、周围空间等原因,造成全年受到东部海洋大气的作用最为显著,氯离子沉积速率全年最高,其中7月份的氯离子沉积速率水平接近海南省中东部离海岸线350 m处夏季水平。由于6月份降雨量比5月份增大了2.3倍,B检测点6月份氯离子沉积速率比5月下降了51%。B检测点附近服役15 a以上混凝土中,氯离子含量整体非常高,呈现典型的海洋腐蚀特征。结论杭州湾沿岸大气符合海洋腐蚀环境特征,并且受到季节、风向、方位和降雨量等因素的影响。

Abstract

The work aims to investigate the corrosion level of construction facilities at the coast of Hangzhou Bay. Three coastal points were selected for one-year detection of the chloride ion deposition rate, and the effects of season, wind direction, orientation and rainfall on the deposition rate of chloride ions were analyzed. The average annual chloride deposition rate at the three detection points exceeded mg/(m²•d). Due to factors such as orientation and surrounding space, point B was most heavily affected by the atmosphere of the eastern ocean throughout the year, and the chloride ion deposition rate was the highest throughout the year. Among them, the chloride ion deposition rate in July was close to chloride deposition rate monitored 350 m away from the coastline in the Middle East of Hainan Province. Since the rainfall in June increased by 2.3 times compared to that in May, the chloride ion deposition rate at point B decreased by 51% in June compared to that in May. The chloride ion content in concrete of more than 15 years was generally high, showing typical marine corrosion characteristics. The atmosphere at the coast of Hangzhou Bay conforms to the characteristics of marine corrosion environment and is affected by factors such as season, wind direction, orientation, and rainfall.

导出引用

王建乐, 蒋达飞, 李国杰, 徐强, 赵国栋, 张紫薇, 程万里. 杭州湾沿岸大气中氯离子沉积速率检测与影响研究[J]. 装备环境工程. 2024, 21(6): 136-141 https://doi.org/10.7643/ issn.1672-9242.2024.06.018

WANG Jianle, JIANG Dafei, LI Guojie, XU Qiang, ZHAO Guodong, ZHANG Ziwei, CHENG Wanli. Detection and Impact of Chloride Ion Deposition Rate in the Atmosphere at the Coast of Hangzhou Bay[J]. Equipment Environmental Engineering. 2024, 21(6): 136-141 https://doi.org/10.7643/ issn.1672-9242.2024.06.018

中图分类号： TG172

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