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本文旨在定性地探讨纵弯褶皱作用下单层岩层内中和面迁移问题。 作者近期在从事构造地质教学中发现《构造地质学》教材(武汉地质学院等四院校合编,1979)对这一问题的论述尚欠全面。其原因是,该教材未考虑到岩石的力学性质和褶皱岩层内部应力状态等具体条件对岩石变形的影响,因而带有一定的片面性。 作者现对这一问题作一粗浅的定性分析,供同行们讨论。
The purpose of this paper is to qualitatively discuss the problem of neutral surface migration within a single layer of rock under the effect of longitudinal bending folds. Recently, the author found that the “structural geology” textbook (combined with four institutes such as Wuhan Geological Institute, 1979) in the teaching of structural geology did not fully discuss this issue. The reason is that the textbook does not take into account the rock’s mechanical properties and the internal conditions of the folded rock and other specific conditions on the impact of rock deformation, and thus has a certain degree of one-sidedness. The author now makes a superficial and qualitative analysis of this issue for discussion among his colleagues.