摘要
提出了地层冻结过程的渗流场和温度场的耦合机理和渗透系数的耦合作用,建立了冻土和融土统一的微分方程数学模型,对冻、融土的热参数渗流系数进行了光滑的曲线回归,解决了非线性耦合有限元数值计算难题,实现了渗流地层人工冻结过程的数值仿真技术,数字可视化地研究了在渗流作用下的井筒冻结温度场和渗流场分布和发展规律.
Put forwards the mechanics of coupled fields of seepage and temperature field, proposed the coupling function of the variable of seepage coefficient, set up united differential equations for frozen and unfrozen soil. With the thermal and seepage parameters of frozen or unfrozen soil smoothly regressed, the non-linear and coupled finite element methods （FEM） problems were successfully solved, and the FEM simulation technology was actually realized, thus the distribution and development of temperature and seepage field and the formation progress of shaft ice -wall in the seepage ground were studied visually and numeraly.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2007年第1期24-28,共5页
Journal of China Coal Society
关键词
渗流地层
温度场
耦合场
有限元
seepage ground
temperature field
coupled fields
finite element methods （FEM）
