湘中涟源地区褶皱-断裂构造控煤特征及成因机制

发布时间：2019-05-28 17:06

【摘要】：为研究湘中涟源地区煤系多期次、多层次区域性顺层滑动断层、构造控煤特征及其成因机制,采用现代地质学和构造解析的理论和方法,结合野外地质剖面、勘探线剖面及岩石力学参数等资料,提出了有利的含煤地段。结果表明:在各矿区表现为缺失性滑覆断裂,大部分地段沿测水组煤层顶段滑动,有时斜切地层,断层产状与地层产状一致,倾角在地表浅处较陡,向深部变缓;由于顺层滑动断层多发育在煤层的顶部,对煤层赋存有利,使煤层埋藏变浅,在老矿区外围有利于找煤;构造演化背景、多层次滑脱层的控制作用、煤系上覆和下伏岩性组合差异性及深部构造及基底属性对浅部构造的控制等因素共同作用决定了涟源地区构造变形特征。
[Abstract]:In order to study the multi-stage and multi-level regional bedding sliding fault of coal measures in Lianyuan area of central Hunan, the characteristics of structural coal control and its genetic mechanism are studied. The theories and methods of modern geology and structural analysis are adopted, combined with the field geological profile. According to the data of exploration line section and rock mechanics parameters, a favorable coal-bearing area is put forward. The results show that there are missing slip faults in each mining area, most of them slide along the top section of coal seam of water survey group, sometimes oblique cut strata, the occurrence of faults is consistent with that of strata, and the dip angle is steeper in the shallow part of the surface and slows down to the deep. Because most of the bedding sliding faults are developed at the top of the coal seam, which is beneficial to the occurrence of the coal seam, the coal seam is buried shallow, and it is beneficial to the coal exploration in the periphery of the old mining area. The tectonic deformation characteristics in Lianyuan area are determined by the tectonic evolution background, the control of multi-level slippage layer, the difference of lithologic assemblage between overlying and underlying coal measures, and the control of deep structure and basement attribute on shallow structure.
【作者单位】：西安科技大学地质与环境学院;中煤科工集团西安研究院有限公司;中国矿业大学(北京)地球科学与测绘工程学院;
【基金】：国家自然科学基金资助项目(41502160) 西安科技大学培育基金资助项目(2014012)
【分类号】：P618.11

【相似文献】