In this paper , a new method , numerical manifold method , is introduced , and applications of adaptive fem , incremental elastoplastic theory and shear strength reduction technique are on second thoughts 首先,基于數(shù)值流形方法和有限覆蓋技術(shù),提出了適用于biot固結(jié)分析的三節(jié)點(diǎn)、四節(jié)點(diǎn)平面協(xié)調(diào)流形元。