富水煤层巷道掘进探放水技术应用研究

陕北地区矿井煤层内大量出水较为罕见，榆横矿区袁大滩煤矿在2号煤层巷道掘进过程中，发生了大量煤层出水。根据矿井及巷道水文地质条件分析，确定主要充水水源为2号煤层的煤层水，充水通道为巷道掘进的塑性区和煤层内原生裂隙；结合现场实际和施工设备等因素，提出了“长短结合、长钻探查、短钻疏放，保证安全”的探放水思想，对该水害进行探放水工程设计；依据科学的技术与研究，保障了矿井的安全生产，同时也为未来矿井防治水工作提供一定的数据支撑和理论基础。

Application research on technology of exploring and discharging water of roadway driftage in watery coal seam

It was relatively rare that coal mine in a large amount of water which in northern Shaanxi Province，in the process of the No.2 coal seam roadway driftage，occurred a large number coal seam water of Yuandatan Coal Mine in Yulin-Hengshan mining area.According to analysis of hydrogeological conditions of the mine and roadway，it was determined that the water filled source was the No.2 coal seam water，and the water passageway was the roadway driftage plastic zone and the native fissure in coal seam，combined with the actual and construction equipment and other factors，the authors proposed the exploring and discharging water thought which of "the long and short drilling combining，long drilling expedited water，short drilling drainage water，ensure safety mining"，and made the engineering design of exploring and discharging water for this water hazards，on the basis of science & technology and research，protected the safety of mine production，at the same time，this project also provides a certain amount of data support and theoretical basis for water prevention and control work of coal mine will facing in the future.