煤顶板覆岩沉积环境区域性研究

Regional Study on Sedimentary Environment of Overlying Strata in Coal Roof

在煤矿开采活动中,顶板覆岩的沉积环境对煤层顶板的稳固性及作业安全性具有直接影响。作为矿区工作面的主要支撑结构,顶板覆岩的岩性、厚度和组合特征决定了顶板的稳定性,进而影响着矿井的安全性和采矿效率。随着开采深度与规模的不断扩展,煤层顶板覆岩的沉积特征及分布规律成为矿区地质研究的重点课题。在不同地质构造和沉积背景之下,煤层顶板覆岩的特征常表现出显著的区域差异,系统地研究其沉积环境具有重要的意义。文中选择延安组与安定组地层展开分析,通过岩心观察、沉积学分析与测井数据的多维度融合,试图深入探讨煤层顶板覆岩的沉积环境特征,揭示其横向与纵向的变化规律,以期为煤矿开采工程的安全设计提供科学支持。

In coal mining activities,the sedimentary environment of the overlying rock has a direct impact on the stability and operational safety of the coal seam roof.As the main supporting structure of the mining area,the lithology,thickness,and combination characteristics of the overlying rock determine the stability of the roof,which in turn affects the safety and mining efficiency of the mine.With the continuous expansion of mining depth and scale,the sedimentary characteristics and distribution patterns of overlying rocks in coal seam roof have become a key topic in geological research of mining areas.Under different geological structures and sedimentary backgrounds,the characteristics of overlying strata in coal seam roofs often exhibit significant regional differences,and systematic study of their sedimentary environments is of great significance.In the article,the Yan'an Formation and Anding Formation strata are selected for analysis.Through multidimensional integration of core observation,sedimentological analysis,and logging data,the sedimentary environment characteristics of the overlying strata of coal seam roof are attempted to be explored in depth,revealing their horizontal and vertical variation laws,in order to provide scientific support for the safety design of coal mining engineering.