【摘要】 对河北省峰峰矿区通二井田煤系地层砂岩中石英光轴的组构特征进行了显微镜下的观察分析。实测的12个岩组图均呈大圆环带状,表现为多组的极密区和次极密区,并以单斜对称组构为主体,具有一个对称面和垂直对称面的1个二次轴,以该轴两两对称的极密区和次极密区有2对或2对以上,表明研究区发生过不容忽视的旋转或剪切运动,它们的构造变形史可能具有多次活动性,并伴随有地温上升的过程。根据水平相岩组图所做的主应力轨迹图显示F56断层是形成张家庄向斜构造区和集贤村构造区的内部边界条件,并表明通二井田最大主压应力方向在北部以北西—南东向为主,向南逐渐转为东西向;最小主压应力方向在集贤村构造区以北东向为主,在中南部张家庄向斜构造区则以近南北向为主。更多还原

【Abstract】 This paper analyzes the fabric feature of optic axis of the sandstone in coalbearing series of Tonger well field in Fengfeng mining area by using of microscope.The 12 measured fabric diagrams,which are all bigcircular belts,show multisets high condensed areas and secondary condensed areas and reveal that the fabric has a plane of symmetry and a diad perpendicular to the symmetric plane.There are two or more than two high condensed areas and secondary condensed areas whose symmetric axis is diad.The study indicates that rotated or sheared movement occurred,and the deformation was characterized by multiperiodic activities with the rise of geotemperature.According to the main stress tract plot based on the horizontal rock,fault F56 is the inner boundary condition forming the Zhangjiazhuang syncline and Jixiancun structural zones.The maximum main pressure stress orientation is dominated by NW-SE in the north and turns to EW along the south.The minimum cooperative stress orientation is dominated by NE along Jixiancun structural zone,while by SE along Zhangjiazhuang tectonic zone.更多还原