厚松散层薄基岩煤层开采粘土层的保护作用分析

Analysis on Protective Effect of Mining Clay Layer Under Thick Alluvium and Thin Bedrock

在分析煤层覆岩工程地质类型的基础上,建立工程地质模型,进行有限元数值模拟,分析覆岩破坏规律及粘土层对岩层变形和导水裂隙带发育的影响,最终确定粘土层的保护作用,从而科学地利用保护层的作用,为提高煤炭资源的开采率作出科学的分析与建议。

The engineering geological types of covering rock of the coal seam are analyzed,the engineering geological model is generated for finite element numerical simulation to find out the law of overburden failure,as well as clay hydraulic conductivity of the rock deformation and fracture with the impact of development and ultimately determine the clay layer of protection role,in order to use the protective role of the protective layer,in order to enhance the extraction rate of coal resources to make scientific analysis and recommendations.