随着中国城市轨道交通建设的飞速发展，巨量盾构渣土随之产生，其运输、堆填造成严重的环境污染问题。依托苏州轨道交通8号线06标段，以该项目盾构渣土为研究对象，采用全生命周期评价方法，对盾构渣土常规处置和资源化利用的碳排放进行了分析。研究结果表明：本工程的盾构渣土总量为2.64 × 10⁵ m³，若进行传统的填埋处理，其全生命周期的碳排放将会达到3.00 × 10⁶碳排放当量；当填埋深度为5 m时，盾构渣土将占用5.28 × 10⁴ m²的土地。若采用工业固废处理盾构渣土制备同步注浆材料，其28 d强度可达2.5 MPa，减少注浆原材料成本46.7万元／km，降低碳排放约4.6 × 10⁵碳排放当量每千米。研究结果可为盾构渣土资源化利用提供参考。

With the rapid development of urban rail transit in China, a large amount of muck is generated during shield tunneling, and its transportation and landfill will cause serious environmental issues. Based on the Suzhou Metro Line 8 section 6, full life cycle assessment method was used to analyze and compare the carbon emissions of conventional disposal and resource utilization of shield muck. Research results indicate that the total amount of muck produced during shield tunneling is 2.64 × 10⁵ m³ in this project. When traditional burial treatment is carried out for shield muck, the carbon emissions throughout its entire life cycle will reach 3.00 × 10⁶ carbon emission equivalents. In this case, 5.28 × 10⁴ m² of land with a 5-meter landfill depth will be occupied by shield muck. If shield muck and industry-byproducts are used for preparing synchronous grouting materials, the 28-day strength of the grouting material can reach 2.5 MPa. Grouting raw material cost by 467 thousand yuan/km will be reduced, and about 4.6 × 10⁵ carbon emission equivalents per kilometer will be reduced. The findings provide reference for optimizing the resource utilization of shield muck.