河北峰峰矿区辛安矿2021年“10·25”小煤窑区奥陶系灰岩(简称奥灰)突水，导致矿井生产水平被淹，矿井停产。对事故成因进行了剖析，提出老空区底板奥灰岩溶水突(涌)水概念，总结其区别于采动引发老空透水或底板突水事故的内涵及外延，揭示浅部老空区底板奥灰承压水储能释放动态演化的突水机制。基于区域奥灰岩溶演化史，采用流场分析、数值模拟以及探治工程揭露，确定区域奥灰岩溶强径流带在井田内的展布形态，建立岩溶水动力场模型，应用人工智能及深度学习方法反演辛安矿“10·25”突水时间及空间位置。针对煤矿采空区底板奥灰突水特点及难点，提出流场树靶、探治结合、新旧共治“三位一体”的水害防控技术体系，经过3个阶段治理实践，不仅3个老旧突水点共1 080 m³/h涌水量以及新突水点稳定涌水量3 600 m³/h得到完全封堵，且矿井原正常涌水量2 040 m³/h下降到1 020 m³/h，效果超出预期目标。

The Ordovician limestone water inrush accident occurred in the small coal-pit area in Xin’an Mine of Hebei Fengfeng mining area on October 25^th, which resulted in the production level being flooded, with the coal mine shut-down. Specifically, the accident cause was analyzed, and the concept of Ordovician limestone karst water inrush from the floor of old goaf was proposed, with its difference from the connotation and denotation of water inrush from the old goaf or floor water inrush accidents induced by mining summarized. Then, the water inrush mechanism based on the dynamic evolution of stored energy release from the confined water of Ordovician limestone in shallow old goaf floor was revealed. Based on the evolution history of regional Ordovician limestone karst, flow field analysis, numerical simulation, and engineering disclosure by exploration and treatment were performed to determine the distribution pattern of strong runoff zone of regional Ordovician limestone karst in the mine field. Thus, a karst hydrodynamic field model was established, and the artificial intelligence and deep learning methods were applied to invert the “10·25” water inrush time and spatial location in Xin’an Mine. In response to the characteristics and treatment difficulties of water inrush from the coal mine goaf floor, a “Trinity” technology system, with the integration of flow field targeting, exploration and treatment combination, and joint treatment of new and old water inrush points, was proposed for preventing and controlling water inrush from the coal mine goaf floor. Through the three stages of treatment, the three old water inrush points with a total water inrush of 1 080 m³/h and the new stable water inrush point with an inrush of 3 600 m³/h were completely blocked. In addition, the original normal water inrush of the mine was decreased from 2 040 m³/h to 1 020 m³/h. Generally, the treatment result is better than the expected.