摘要
坝址渗水析出物是液—固相系列间相互作用的产物,对坝基岩体的渗透稳定性和帷幕体的防渗时效性具有指示意义,而目前对其量化分析还不够。在明确析出物的成因及形成过程的基础上,以一大坝工程作为例,应用PHREEQC中Equilibrium_phases模块对渗水析出物进行定量解析,并与类似成果进行对比,认为此模块的应用更为合理。结果表明:目前区内大坝廊道渗水析出物的析出量总体上对大坝的稳定性影响不大,第四单元和第六单元相对其它单元析出量稍多一些,建议加强监测。
Precipitates from the dam foundation are the product of water-rock interactions. At present the research on the precipitates is mostly qualitative, and the quantitative analysis is not enough. On the basis of understanding the formation mechanism of the precipitates, this article applies the module of equilibriumphases in the PHREEQC to the quantitative analysis of the precipitates. It is found that the results are more reasonable, compared with other similar results. The results indicate that the precipitate has little effect on seepage stability under the dam foundation at present. There is more precipitate in the forth and sixth units, thus monitoring should be strengthened.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2015年第1期42-46,共5页
Hydrogeology & Engineering Geology
基金
国家自然科学基金项目(41272265)
