试论洪山殿矿区可采煤层的控制因素

洪山殿矿区晚二叠世龙潭组合煤段为河流三角洲沉积体系。本文论述了含煤岩系的沉积特征、含煤性,剖析了主要可采煤层的赋存规律。通过对矿区构造格架、沉积环境的研究,详细地论证了矿区可采煤层的控制因素;同沉积构造的控煤作用、沉积相与煤层的分布、古地形与厚煤带的关系及差异压实效应是控煤的重要条件.了解控煤机理,可以预示煤层的区域分布。并指出后期构造对煤层赋存的影响。上述研究可以为矿井生产、开拓和新井建设提供准确的地质依据,指明矿井的前景,增加预见性,更好地服务于生产建设,图9,表4,参5。

THE CONTROL FACTORS OF THE MINABLE COAL-SEAMS ACCUMULATION IN HONGSHANDIAN COAL MINE

The Longtan formation, upper permlan system was deposited in a fluvial-deltaic depositional system in studied area. The sedimentary features and coal developing conditions of its upper coal bearing sequence have been shown in this paper. Also the occurences of main minable coal seams have been analysed. By studying the tectonic framework, tectonic movements and the depositional environment. We have discussed the control factors of coal accumulation in detail .The important factors are syndepositional structures, sedimentary facies , paleogeomorphy , and differential compaction. Then the coal-forming mechanism was understood, and the spatial distribution of coal seams in this area have been predicted. Furthermore, the effect of post depositional structures to the occurences of main minable coal seams in this area have been studied. The conclusion of this paper may provide accurate geologic data for mining in pits and developing new pits. Since the predictablity of data has bean risen, it may sevice the mining work much better than before. 9figs., 4tabs., 5refs.