采用三维有限元数值分析法，通过建立三维有限元计算模型，分析堵塞长度对堵塞区有效应力场的影响。
Three dimensional finite element computing model is established and the effect of stemming length to deep hole bench blasting is studied by three dimensional finite element method.
将基于多孔介质的有效应力原理引入流固耦合渗流中，并根据平衡条件得出了应力场方程；
Principle of effective stress in porous media is introduced into fluid-structure coupling theory, then according to the equilibrium condition, the stress equation is established.
通过分析井筒周围应力场和裂缝应力场，分别建立了井筒周围应力场模型和裂缝的有效应力模型。
Through analyzes around the wellbore stress field and the crack stress field, has established around separately the wellbore stress field model and the crack effective stress model.
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