恩口—斗笠山复向斜构造应力场研究

煤田构造应力场有其自身特点,选择恰当的应力场标志物是其中的关键问题.本文通过对小褶皱、初始雁行张裂隙脉、共轭剪节理及其镜质组反射率各向异性特征的综合研究,恢复了区内晚古生代以来的五期构造应力场,由此反溯了恩口—斗笠山复向斜的形成和演化过程.

Study on the Tectonic Stress Field in Enkou-Doulishan Synclinorium

The key to conducting research on tectonic stress field in coal field lies in the choice of its appropriate indicators. By analysing various indicators such as small folds, conjugated shear joins, primary echelon tension fissures and the vitrinite anisotropy, the paper reconstructs the five episodes of forming tectonic stress field since late Palaeozoic in the area, and discusses the process of formation and evolution of Enkou-Doulishan synclin orium.