陕西煤炭

为了查明杭来湾煤矿煤层上覆地下水的补给来源以及与含水系统的连通状况，本研究采集了矿区地表水、地下水和矿井水样品，利用水化学组成、氢氧同位素组成(δD和δ¹⁸O)和放射性锶同位素组成(⁸⁷Sr/⁸⁶Sr),探讨了矿区不同水体之间的水力联系。结果表明，目前直罗组承压水是矿井水主要的补给源；矿区地表的田间洼地和池塘与萨拉乌苏组潜水对矿井水的贡献不显著；萨拉乌苏组潜水目前不是矿井水的直接充水水源。这些结果对煤矿探放水措施提供了重要科学支撑。

In order to investigate the sources of groundwater recharge and the connectivity with the aquifer system above the coal seams in Hanglaiwan Coal Mine, this study collected samples of surface water, groundwater, and mine water in the mining area.Using hydrochemical composition, hydrogen oxygen isotope composition(δ D and δ¹⁸O),and radioactive strontium isotope composition(⁸⁷Sr/⁸⁶Sr),the hydraulic connections between different water bodies in the mining area were explored.The results indicate that the pressurized water in the Zhiluo Formation is currently the main source of supply for mine water; The contribution of field depressions and ponds on the surface of the mining area to the groundwater of the Sarawusu Formation is not significant; The Sarawusu group phreatic water is currently not a direct source of mine water for filling.These results provide important scientific support for the exploration and drainage measures in coal mines.