中文摘要：

基于淮北矿区4个矿井共15块煤定向样品的镜质组反射率测试数据,在相容性调整的基础上,开展煤样镜质组反射率三维椭球体进行拟合.结合区域及采样地成煤后构造演化分析及煤样变形类型特征,深入研究煤镜质组反射率三维椭球体的方位和形状对应力、温度和变形结构的响应,并探讨其内在机理.结果显示：煤镜质组反射率三维椭球体最大—中间反射率所在平面的倾向多与区域应力来源方向相近,其原因可能归结于煤中芳香片层向垂直于岩石圈当中近水平构造应力和上覆地层压力的合力方向优势发育.垂直于挤压应力方向延伸的断层的干扰、煤变形程度和多期应力场的叠加效应是导致少数样品指示异常的主因.在多期应力场叠加影响区域,镜质组反射率定向会向后期应力方向发生不同程度偏转.但对于强变形构造煤,煤体颗粒间的移位旋转会削弱镜质组反射率重新定向偏转的程度,使其镜质组最大—中间反射率平面倾向主要指示前期应力来源方向.岩浆热异常是导致最大—中间反射率所在平面陡倾的主要因素之一.根据弗林参数,多数样品表现为扁椭球型,仅是煤正常演化的反映,而长椭球型则主要反映了岩浆热异常的的影响.

英文摘要：

Coal vitrinite reflectance ellipsoid fitting is applied to 15 oriented tectonically deformed coal samples from 4 coal mines of Huaibei area based on compatibility adjustment.The influence of stress,temperature and deformation texture on the orientation and shape of ellipsoid is discussed,combining with the tectonic evolution of research area after coal formation and the coal deformation texture.The results show that,dips of the max—intermediate reflectance plane of most of the samples are similar to the source of the regional stress direction,which may be attributed to the coal aromatic plane is prefer to grow along the direction perpendicular to the resultant stress direction of horizontal tectonic stress and overburden stress; Few samples exhibit abnormal indication may due to the influences of the nearby fault striking perpendicular to the compress stress,coal deformation extent or multiphase stress field ; Affected by the multiphase stress,the indication turn to the resultant stress direction of later stress field.While the process will be stopped by strong deformation,the shift and rotation of particles of coal with strong deformation weaken the turning and make the indication remains the resultant stress direction of former stress field; Magma thermal abnormality is one of the main reason leading to the max—intermediate reflectance plane dips steeply ; According to Flinn parameters,most of the samples exhibit flat-ellipsoid,only three samples exhibit longellipsoid,which reflect the normal coal evolution and the influence of magma thermal respectively.