水利学报2016，Vol.47Issue(2)：165-172,179,9.DOI:10.13243/j.cnki.slxb.20150796
大坝基岩帷幕宾汉姆浆液灌浆的三维数值模拟
Three-dimensional numerical simulation of curtain grouting in the dam bedrock based on binghamian grouts
摘要
Abstract
Because of the grouting engineering of masking and the complexity of geological conditions, how to accurately determine the diffusion regularity of grout under complicated geological conditions is the key and difficult point of grouting numerical simulation analysis. Binghamian grouts two-phase flow characteris⁃tics in the process of grout diffusion and complex geological conditions of dam bedrock is not considered in the present numerical simulation research of grouting in the hydraulic engineering. These research objects mainly focus on a single fracture or a single grout hole, while the simulation of grout front has not in⁃volved. Aim at the above-mentioned problems,a three-dimensional refined geological information model,in⁃cluded different formations,unfavorable geological body, curtains, grouting holes, was firstly established in this paper. Then, coupled with the volume of fluid (VOF) method in the CFD commercial software STAR-CCM+, a three-dimensional grouting mathematical model of Binghamian grouts air-grout two-phase flow was developed to achieve the numerical simulation of the multiple holes and sequencing grouting in the dam bedrock,also analyzing the grout diffusion rule and curtain lap after grouting. Finally,a hydropow⁃er station of bedrock curtain grouting process was taken as a case. The results show that the grout diffu⁃sion radius increases with time in a certain time range,but its rate of change shows a decline trend. After grouting completion of each sequence hole,grout front laps well. Furthermore,comparing the simulation val⁃ue with the actual measuring value of the grouting quantity and time, the average errors were 9.08% and 6.32% respectively,which verified the reliability of the method.关键词
大坝基岩帷幕灌浆/宾汉姆浆液/VOF法/三维非稳态气液两相流灌浆模型/地质信息模型/多孔分序Key words
dam bedrock curtain grouting/Binghamian grouts/VOF method/three-dimensional air-grout two-phase flow grouting mathematical model/geological information model/multiple holes and sequencing分类
建筑与水利引用本文复制引用
邓韶辉,王晓玲,敖雪菲,任炳昱,李瑞金..大坝基岩帷幕宾汉姆浆液灌浆的三维数值模拟[J].水利学报,2016,47(2):165-172,179,9.基金项目
国家重点基础研究发展计划（973计划）（2013CB035906）；国家自然科学基金创新研究群体科学基金（51321065）；国家自然科学基金项目 （）
