中文摘要：

承压开采法是解决受奥灰岩溶水威胁的煤炭资源的主要途径之一,为确保承压开采的安全实施,需对承压开采中底板的变形破坏规律进行分析研究,从而确定承压开采过程中最危险的地段,为承压开采的安全措施提供理论指导。采用FLAC3D数值模拟软件,对受奥灰岩溶水威胁的回采工作面进行承压开采数值模拟。通过对模拟结果进行分析,推断出承压开采中底板变形破坏规律及底板塑性区分布的最大深度。

英文摘要：

The mining method which above the confined aquifer is one of the main ways to mine coal resources under the threat of the Ordovician limestone karst water. In order to ensure the security implementation of mining above the confined aquifer, the law of the floor deformation and failureneed to be researched, thus to determine the most dangerous area and to provide the theoretical guidance for safety measures during the mining above the confined aquifer. Using numerical simulation software FLAC3D, the mining working face is numerically simulated under the threat of the Ordovician limestone karst water. Based on the analysis of simulation results, deduce the law of the floor the deformation and failure and the maximum depth of the plastic zone in the floor.