在软土地层中，市域铁路地下车站建设面临工艺适配与双碳目标协同的难题。传统明挖法施工存在材料消耗大、施工周期长、碳排控制难、对周边环境影响把控不易等问题。为探索更绿色高效的施工方案，依托嘉兴至枫南市域铁路曹庄站工程，开展连续沉井法施工工艺的实践与创新。通过协同应用数字孪生监控平台与一体化数字压沉系统，动态调整沉井下沉顺序及内部中板、顶板施工流程； 下沉过程中，实现土塞高度动态调控、周边环境沉降控制，精准把控沉井下沉精度并提升施工效率，同时推进站隧一体化快速施工。该工程的实践创新表明： 1）市域铁路地下车站采用连续沉井法施工，相比明挖法，可减少土方7%，节省工程造价8%； 2）在材料消耗与减碳方面，减少混凝土16%、钢筋20%，合计减少碳排放量3 831 t（相当于减少无烟煤燃烧1 945 t）。

In urban soft soil strata, constructing underground stations for urban rail transit presents challenges in balancing process adaptability with the dual goals of carbon peaking and carbon neutrality. Traditional open-cut construction methods face issues such as high material consumption, long construction periods, difficulty in controlling carbon emissions, and significant impacts on surrounding environments. To explore a greener and more efficient construction solution, the authors investigate the Caozhuang station of the Jiaxing-Fengnan urban rail transit, applying and innovating the continuous caisson construction method. By integrating a digital twin monitoring platform with an integrated digital pressure-sinking system, the sinking sequence of caissons and the construction process of internal middle and top slabs are dynamically adjusted. During the sinking process, soil plug height is regulated in real time, surrounding settlement is controlled, caisson sinking accuracy is precisely maintained, and construction efficiency is improved. Simultaneously, integrated station and tunnel construction is accelerated. The project demonstrates the following practical innovations: (1) Compared with the open-cut excavation method, the caisson method reduces earthwork by 7% and project costs by 8%. (2) Material consumption and carbon emissions are significantly reduced—concrete usage decreases by 16% and steel reinforcement by 20%, resulting in a total carbon emission reduction of 3 831 t, equivalent to eliminating the combustion of 1 945 t of anthracite coal.