Quantitative Prediction of Precipitate in a Dam’s Drainage Holes Based on PHREEQC

• 责任者：Peng Hongming (School of Environmental Studies ; China University of Geosciences ; Wuhan 430074 ; China) ; Liang Xing
• 刊名：Hydrogeology and Engineering Geology
• 出版年：2010
• 卷期：37(4)
• 关键词：重力坝 ; concrete dams ; 水岩作用 ; water-rock interaction
• 页码：p.111-115
• 图表：4 illus., 5 tables, 7 refs.
• 分类号：1701
• issnNo：ISSN1000-3665
• isbnNo：CN11-2202/P

Large numbers of precipitates are often found in the drainage holes of hydraulic construction and they have adverse effect to hydraulic construction’s security steady operation. Precipitate in drainage holes of a large hydraulic construction is a typical hydrogeochemistry phenomenon when ground water environmental changes. The PHREEQC simulation result indicates that when the amount of precipitate in unit length is situated between 0.030 328 kg /a and 0.912 361 kg /a the dam separation phenomenon is not serious. Quantitative simulation of water-rock interaction with PHREEQC, revealing the hydrogeochemical change process of precipitate, can provide a scientific basis for dam safety monitoring.