重庆市郊铁路璧山至铜梁线是促进渝西片区快速发展的东西向市域快线，其控制性工程云雾山隧道在斜井的施工过程中遇突涌水。为准确识别涌水原因、制定有效的堵排水防治措施，在充分研究区域工程地质、水文地质特征和斜井隧道涌水特征的基础上，查明了区域地下水类型主要包括红层裂隙水、碎屑岩孔隙裂隙水和碳酸盐岩岩溶水，并分析了斜井涌水可能的来源为地表水渗漏、基岩裂隙水、煤矿采空区积水、导水断层突水和岩溶水涌出。通过结合现场调查、物理法、化学法等手段进行多因素多方法综合分析，识别出此次斜井涌水源于隔水页岩层间砂岩地层中的承压裂隙水及库水经断层导水补给。研究成果可为类似隧道工程涌突水预测和水源识别提供参考和指导。

The Bishan-Tongliang Line of Chongqing Suburban Railway is an east-west urban rapid transit line, which promotes rapid development of the western area of Chongqing. Its critical engineering project, the Yunwu Mountain Tunnel, encountered water-inrush from the inclined shaft during construction. To accurately identify the cause of water inflow and develop effective measures for blocking and drainage prevention and control, based on a comprehensive studying of the regional engineering geology, hydrogeological characteristics, and water-inrush characteristics of the inclined shaft tunnel, this paper determines the regional groundwater types, mainly including mudstone fracture water, sandstone fracture water and karst groundwater, and identifies possible factors contributing to the water inflow (surface water leakage, bedrock fracture water, coal tunnel water, water diversion fault water-inrush, and karst groundwater, etc.). By combining on-site investigation, physical methods, chemical methods, and other methods to conduct a comprehensive analysis of multiple factors and methods, it was identified that the water source of this inclined shaft inflow came from the pressurized fracture water in the sandstone formation between the water resistant shale layers, and the reservoir water was supplied through fault water diversion. Overall, the research results can provide references and guidelines for predicting water-inrush and water source identification in similar tunnel projects.