水利学报Issue(11)：1295-1302,8.
南水北调工程采空区三维宾汉姆流体紊流模拟
Three-dimensional turbulent numerical simulation of Bingham fluid in the goaf grouting of the South-to-North Water Transfer Project
摘要
Abstract
Multiple coal mine goaf under the South-to-North Water Transfer Project have brought serious threat to the safety of its construction and operation. It becomes an urgent engineering problem to reinforce the coal mine goaf by grouting reinforcement process. According to the Bingham fluid properties, the Bing-ham constitutive equation was established in this paper. Based on the 3-D geometry model with geological information of coal mine goaf, a three-dimensional k-ε turbulence mathematical model considering Bingham liquid character was presented. Different geological parameters, porosity, resistance coefficient are adopted for the different geological layers, such as strata, fault, collapsed zone, goaf, coal floor, and then turbu-lent diffusion law of Bingham fluid in goaf was simulated. According to the grouting hole sequence,sub-se-quence grouting was achieved and the diffusion law of slurry was analyzed. The results show that within a certain time range, diffusion radius and filling rate of goaf increased over time, but a decreasing trend of the change rate was demonstrated and finally the change rate approached to zero. The error of grouting amount between the numerical simulation and the actual situation was 11.8%. The research can provide a theoretical basis and technical support for the goaf grouting design and optimization, which has an impor-tant theoretical and practical value to ensure the long-term security and stability run for the South-to-North Water Transfer Channel.关键词
注浆/宾汉姆浆液/k-ε紊流模型/采空区/南水北调Key words
grouting/Bingham fluid/k-ε turbulence mathematical model/goaf/South-to-North Water Transfer分类
数理科学引用本文复制引用
王晓玲,王青松,周正印,敖雪菲..南水北调工程采空区三维宾汉姆流体紊流模拟[J].水利学报,2013,(11):1295-1302,8.基金项目
国家自然科学基金创新研究群体科学基金（51021004）；国家自然科学基金项目（51179121）；“十二五”国家科技支撑计划重点项目 （）
