层间剪切带法向空间分布定量预报

本文讨论了层间剪切带法向空间分布定量预报问题。文中首先对层间剪切带发育的力学机制进行了再认识, 提出了基于变形破坏程度的分类方案; 引进了构造地质学中的尺度概念; 讨论了影响层间剪切带在法向空间发育分布的因素并建议了相应的考虑方法。之后, 建立了两个模型分别讨论岩石地层软硬相间的组合特征和完善型剪切带分区段预报。由此提出了一套实用性强比较可靠的定量预报方法, 最后用该方法对清江高坝洲坝基层间剪切带的分布进行了验证性预报, 取得了较高的精度(精度在70%左右)。

THE QUANTITATIVE PREDICTION OF THE LOCATION OF INTERBED SHEAR ZONES IN PERPENDICULAR DIRECTION

This paper deals with the problems of quantitative predication of location of interbed shear zone in perpenticular direction findings in theory. In the beginning, the mechanism is studied further and new classification is proposed; The concept of scale is introduced; The exteral and interal factors effecting on the location of shear zoner and how to take them into consideration are discussed. Then, two models are developed to quantitatively describe the charactertics of alternate hard-soft layersand to predict the position of shear zones within different elements. Finally, a systematic methodiology on the quantitative prediction of loaction of shear zones in the perpendicular direction is proposed. It was used in predicition of shear zones in Gao BaZhuo dam site.