期刊文献+

地下金属管道在我国几类主要土壤中的腐蚀状况及其与土壤性质的关系 被引量:7

A STUDY ON CORROSION OF UNDERGROUND PIPELINES AND ITS RELATION TO SOIL PROPERTIES IN MAJOR SOILS OF CHINA
下载PDF
导出
摘要 地下金属管道在滨海盐土、盐化潮土及黄潮土等弱度淋溶型土壤中腐蚀严重,10年内即可出现多处穿孔,最大孔蚀速率可达1.5毫米/年。穿孔多少主要与土壤的电阻率、含盐量和含氯量有关,其中氯离子含量的影响最大。在砂姜土、棕壤、黄垆土、褐土、栗钙土等中度淋溶型土壤中腐蚀较轻,一般10年内不会出现穿孔。强度淋溶的鳝血水稻土、红壤性、赤红壤性水稻土及赤红壤腐蚀最轻,最大孔蚀速率<0.01毫米/年。处于嫌气状态的南方沼泽性水稻土地区,由于出现微生物腐蚀,最大孔蚀速率可达0.5毫米/年。 Underground metal pipelines are severely corroded in weakly leached soils such as coastal solonchak, salinized fluvo-aquic soil and yellow fluvo-aquic soil. Within 10 years they can be perforated at a number of points, with a maximum rate of hole corrosion of 1.5 mm/yr. The number of perforated holes is associated with such factors as the resistivity, salt content, and chloride content of soil, of which the chloride content is the most important. In moderately leached soils such as Shajiang soil, brown earth, dark loessial soil, cinnamon soil and castanozam, the pipelines arc corroded less severely, and commonly no perforation will take place within 10 years; while in strongly leached soils such as paddy soils with Fe-humic coatings, paddy soils developed on red earth and lateritic red earth, as well as lateritic red earths, they are corroded most slightly, with a maximum rate of hole corrosion of 0.01 mm/yr. Yet, in areas of boggy paddy soil under anaerobic conditions in South China, the maximum rate of hole corrosion may be up to 0.5 mm/yr, due to a corrosion by microbes.
出处 《土壤学报》 CAS CSCD 北大核心 1992年第3期265-271,共7页 Acta Pedologica Sinica
关键词 地下管线 腐蚀 土壤性质 Underground, Pipelines, Soil Properties, Corrosion
  • 相关文献

参考文献8

  • 1孙慧珍,材料土壤腐蚀试验方法,1990年
  • 2孙慧珍.地下金属构件腐蚀因素的研究[J].土壤学进展,1989,17(6):1-7. 被引量:1
  • 3于天仁,中国红壤,1987年
  • 4叶炳,石油腐蚀与防护学术论文选集.2,1985年
  • 5孙慧珍,土壤学报,1983年,20卷,1期,69页
  • 6吴--,土壤学进展,1981年,4期,1页
  • 7仓东卿,电化学方法及其在土壤研究中的应用,1980年
  • 8刘志光,电化学方法及其在土壤研究中的应用,1980年

同被引文献34

引证文献7

二级引证文献48

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部