用似双重介质模型进行岩体应力与渗流耦合分析

Analysis on coupling of stress and seepage forrock mass by quasidual medium model

将宏观裂隙按裂隙渗流模型分析,微观和细观裂隙按等效连续介质模型处理,给出了一种非线形耦合分析模型———似双重介质模型。基于该模型导出了岩体应力场与渗流场的非线形耦合分析有限格式。通过对煤矿矿井突水预报问题进行分析研究,验证了所提出的方法是可行和实用的,并给出了一些有实际应用参考价值的结论。

Macrofractures are analyzed as fracture seepage model and microfractures are looked on as equivalent continuum model, then a nonlinear coupling analysis model, quasidual model, is given. Based on this model, the nonlinear finite element formulas of coupling stress with seepage fields are derived for rock mass, and then the method is proved to be feasible and practical by analyzing mining water invasion prediction for a coal mine and some significant results are given.