本文以寺河煤矿二号井煤矿开展水文地质条件和矿井充水因素研究，查明矿井含水层、隔水层、井田边界及其水力联系等水文地质条件，分析充水水源、充水通道、充水强度等矿井充水因素，划分矿井水文地质类型，实现矿井水文地质条件清晰，水害隐蔽致灾因素清楚，为矿井开采提供科学可靠的防治水依据，确保寺河煤矿二号井高效安全生产。

 In this paper, the hydrogeological conditions and mine water filling factors of No.2 mine in Sihe Coal Mine are studied. The hydrogeological conditions such as mine aquifer, aquiclude, mine field boundary and hydraulic connection are identified. The mine water filling factors such as water filling source, water filling channel and water filling intensity are analyzed. The mine hydrogeological types are divided to realize the clear hydrogeological conditions of the mine and the hidden disaster-causing factors of water damage. It provides a scientific and reliable basis for water prevention and control for mine mining, and ensures the efficient and safe production of No.2 mine in Sihe Coal Mine.