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应用傅里叶级数方法，对与轴向力不在同一平面上的初始挠度对褶皱的影响进行了研究，结果表明：自由岩层褶皱时，只有一阶波对它有明显的影响，其他初始挠度对褶皱的影响不大，同时讨论了受约束岩层褶皱时初始挠度对它的影响，并指出只有某一特定波长的初始挠度（即它的波长等于或近似等于最终波长的初始挠度）才对岩层褶皱有明显的影响。
The influence of the initial deflection on the folds, which is not in the same plane as the axial force, is studied by using the Fourier series method. The results show that only the first-order waves have a significant influence on the folds of the free strata. Other initial deflections The influence of the initial deflection on the confined rock fold is discussed and it is pointed out that only the initial deflection of a certain wavelength (ie its wavelength is equal to or approximately equal to the initial deflection of the final wavelength) Wrinkles have a significant effect.