基于UDEC的浅埋煤层表土层与主关键层对地表沉陷的耦合效应分析

摘要

The estimate of mining subsidence is one of the core contents on surface subsidence discipline, and it has great practical sig- nificance on buildings and ecological environment protection. The paper simulates working face of the typical shallow coal seam by the UDEC, even analyzes the coupling effects of topsoil and main key stratum to surface subsidence through setting up four models. Under the condition of thin topsoil thick and hard key stratum, it will be drew the conclusion that the coupling effect of topsoil and main key stratum must be considered on the estimate of mining subsidence.%开采沉陷预计是矿山开采沉陷学科的核心内容之一。开采沉陷的预计，对建筑物和生态环境的保护有重要意义。利用UDEC软件对典型的浅埋煤层工作面进行了模拟研究，通过建立的4个模型对浅埋煤层表土层与主关键层对地表沉陷的耦合作用进行分析得出，在表土层很薄或覆岩中有很厚、很硬的关键层的条件下，地表沉陷的预计必须考虑表土层与主关键层的耦合效应。