天府背斜上高角度仰冲断层的变形几何学问题讨论

本文以天府背计的地质构造特征为基础，提出了高角度仰冲断层的变形几何学问题。文中比较系统地阐述了变形几何学在分析石油地质构造中所涉及的无限小和有限小的概念，连续和均匀性的棍念，讨论了库仑—莫尔理论表达式，分析了变形椭球体理论中剪破裂角(θ)值的变化范围，从而为论证高角度仰冲断层提出了理论依据。

DISCUSSION ON PROBLEMS OF DEFORMATION GEOMETRY OF HIGH ANGLE UNDERTHRUST IN TIANFU ANTICLINAL STRUCTURE

Based on the geological characteristics of Tianfu anticlinal structure，this article puts forward the problem oft deformation geometry of high angle underthrust. It quite systematically expounds the concepts of infinitesimal and finite decimal，continuity and uniformity involved in the deformatiom geometry analysing the oil geological structures, discusses Coulomb-Mohr theoretical expression, and analyses the variable range of shear angle(A)in deformation ellipsoid. Therefore，the theoretical basis is presented to demonstrate the high angle underthrust.