承压工作面奥灰水破坏深度测试与模拟研究

Test and Simulation of Ordovician Limestone Water Failure Depth in Confined Working Face

在辛置煤矿地质水文地质条件、煤层位置关系和带压开采基础上,以东四采区10-409工作面为背景,进行了10#煤层底板采动破坏深度试验和开采过程底板破坏数值模拟研究,结果表明:模拟结果8.7 m与理论9 m相接近,同时研究分析了东四采区构造对带底板破坏特征和最小临界突水系数,并提出了防治措施,为相似条件下工作面底板承压水上安全开采提供技术支撑。

Based on the geological and hydrogeological conditions,coal seam position relationship and mining under pressure in Xinzhi coal mine,taking 10-409 working face of Dongsi mining area as the background,the test of floor mining failure depth and numerical simulation of floor failure in mining process of No.10 coal seam were carried out.The results show that the simulation result of 8.7m is close to the theoretical 9m,At the same time,the paper studies and analyzes the floor damage characteristics and the minimum critical water inrush coefficient of Dongsi mining area,and puts forward the prevention measures,so as to provide technical support for the safe mining of the floor above the confined water under similar conditions.