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塑性力学的滑移线理论、Watterson零伸长度理论和最大有效力矩准则均获得共轭变形带的夹角为109.4°。该值与黄金规则相容,然而,滑移线理论的预测值面对伸长方向,与实际不符。零伸长度理论所预测的109.4°,不能解释实际观察到的平面共轭剪切带。根据最大有效力矩准则理论,预测韧性变形域共轭变形带面对主压应力方向或瞬时最小伸长度方向的夹角为109.4°。迄今获得的全部野外观测值和岩石力学实验结果均位于该预测值的±20°范围内,证明最大有效力矩准则的有效性。最大有效力矩准则可解释或求解:1)折劈理的形成,2)大型低角度正断层和高角度逆冲断层的形成,3)地震反射剖面中的鳄鱼嘴构造,4)变质结晶基底的基本构造型式——菱网状韧性剪切带,5)拆离褶皱的形成,6)古主应力和相关的运动学涡度。
The slip-line theory of plasticity, the zero-length theory of Watterson and the maximum effective moment criterion all obtained the included angle of conjugate deformation band of 109.4 °. This value is compatible with the golden rule, however, the prediction of slip-line theory faces the direction of elongation, which is not in accordance with the real world. The predicted zero-length theory of 109.4 ° does not explain the actual observed plane conjugate shear band. According to the theory of maximum effective torque, the angle between the surface of the conjugate deformation zone of the ductile deformation domain and the direction of the principal compressive stress or the minimum instantaneous moment of elongation is predicted to be 109.4 °. All of the field observations and rock mechanics results so far obtained are within ± 20 ° of this predicted value, demonstrating the validity of the maximum effective moment criterion. The maximum effective moment criterion can be explained or solved: 1) the formation of fold cleavage, 2) the formation of large low-angle normal faults and high-angle thrust faults, 3) the crocodile mouth structure in seismic reflection profiles, 4) the metamorphic crystalline base Basic structure type - rhomboid ductile shear zone, 5) detachment fold formation, 6) ancient principal stress and related kinematic vorticity.