For the sake of simplifying the analysis of geological structural mechanics, the method using endogenetic force lines in the description of the stress fields is advanced in this paper.
为了简化地质构造力学分析，本文探讨了用内力线来描绘应力场的方法。
The block-structural plane model is used for constructing the statically admissible stress fields which satisfy the equilibrium conditions, boundary conditions and yield criteria.
根据下限定理，构造了满足完全平衡条件、边界条件和屈服条件的静力许可场；
The block-structural plane model is used for constructing the statically admissible stress fields which satisfy the equilibrium conditions, boundary conditions and yield criteria.
根据下限定理，构造了满足完全平衡条件、边界条件和屈服条件的静力许可场；
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