水力发电2017，Vol.43Issue(9)：113-118,6.
基于碳同位素的水电站钙质析出物形成机制研究
Formation Mechanism Research of Calcium Precipitates in Hydropower Station Based on Carbon Isotope
摘要
Abstract
According to the relationship between the carbon in nature and the carbon component in engineering facilities,and different physical,chemical and isotopic compositions of carbon,the precipitates simulation testes in curtain corridor and indoor and indoor anti-seepage curtain penetration simulation test and on-site curtain corridor test are designed and carried out.By comparing the results of above four types of tests and based on the theories of carbonate balance and isotope fractionation,the causes and reaction mechanism of white calcium precipitates are studied.By tracking the cycle of carbon,it is concluded that the white calcium precipitates of hydraulic structures or anti-seepage curtain corridor are most likely as a result of the dissolution erosion of concrete or impervious curtain,but the carbonate rock contributes little to white calcium precipitates.The alkaline water caused by the dissolution erosion is less to participate in the carbon cycle in the process of seepage,which needs react with carbon dioxide in air to produce calcium carbonate and isotope fractionation.关键词
碳稳定同位素/钙质析出物/对比试验/溶出型侵蚀/形成机制Key words
carbon isotope/calcium precipitates/contrast test/dissolution erosion/formation mechanism分类
建筑与水利引用本文复制引用
刘胜,余波,郑克勋,马聪..基于碳同位素的水电站钙质析出物形成机制研究[J].水力发电,2017,43(9):113-118,6.基金项目
中国电建集团科技项目(DJ-ZDXM-2014-21) （DJ-ZDXM-2014-21）
