河南城建学院学报2025，Vol.34Issue(3)：7-13,7.DOI:10.14140/j.cnki.hncjxb.2025.03.002
地下水渗流作用下冻结温度场发展规律研究
The development law of freezing temperature field under the action of groundwater seepage
摘要
Abstract
In order to reveal the influence mechanism of groundwater seepage on the evolution of temperature field in the well drilling project with freezing method,taking the central air shaft project of Huainan Pan'er Coal Mine as an example,a numerical model of hydrothermal coupling temperature field is constructed based on the FLUENT finite element software,and the reliability of the model is verified through numerical simulation in comparison with the measured data to systematically investigate the coupling effect of the flow rate and dis-tance of the pumping wells on the freezing wall inter-circle time.The study shows that there is a significant in-teraction effect between groundwater seepage field and freezing temperature field,and the increase of pumping flow will intensify the migration and diffusion of coldness along the seepage direction,leading to a nonlinear in-crease in the freezing wall intersection time;when the pumping flow rate is 100 t/d and the distance between pumping wells is 200 m,the intersection time is delayed by 1 d compared with that of the non-seepage condi-tion;when the flow rate is increased to 500 t/d and the pumping well distance is shortened to 50 m,the seep-age intensity exceeds the threshold of freezing wall development,and the inter-circle process is completely blocked;the inter-circle time of the freezing wall is positively correlated with the pumping flow rate,and nega-tively correlated with the pumping well distance,and its mathematical relationship can be characterized as a bi-nary function.The research results can provide the theoretical basis and parameter optimization method of seep-age-freezing coupling for the design of freezing engineering in water-rich strata.关键词
冻结温度场/地下水渗流/水热耦合/数值模拟/抽水流量/抽水井距离Key words
freezing temperature field/groundwater seepage/hydrothermal coupling/numerical simulation/pumping flow/pumping well distance分类
矿山工程引用本文复制引用
徐文,王晓健,金子刚,田瑞胜..地下水渗流作用下冻结温度场发展规律研究[J].河南城建学院学报,2025,34(3):7-13,7.基金项目
国家自然科学基金项目(52404069) （52404069）
安徽省高校科研资助项目(2023AH051203) （2023AH051203）
