... crack initiation test || 龟裂试验 crack instability || 裂纹失稳性 crack length || 裂纹长度 ...
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A theory of delayed crack instability of viscoelastic bodies is pro-posed in this paper.
本文提出了粘弹性裂纹体的延迟失稳理论。
Volcanically water flooding of oil well is very ubiquitous during oil developing. It is the result of crack instability propagation in the reservoir.
油井暴性水淹是裂缝性砂岩油田开发的普遍特征，其中很多是由注水引起裂缝失稳扩展所致。
Using the LFEM theory, the author provided the computing method of stress strength factor of crack and the criteria of crack instability propagation and propagation angle.
本文根据砂岩储层的物理力学特征，运用断裂力学理论，给出了储层裂缝的应力强度因子的计算方法，定量地分析了开发过程中储层裂缝失稳扩展的判据、裂纹扩展方向。
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