流态固化土在大口径管道内套管中的环隙填充技术与应用

Ring Gap Filling Technology and Application of Fluid-Solidified Soil in Large-Diameter Pipeline Casing

摘要:

为解决顶管非开挖施工中常见的环向间隙填充难题，系统性探讨流态固化土在大口径管道内套管环隙填充中的技术可行性及应用潜力。通过综合分析流态固化土的材料性能指标、现场施工工艺流程、环境友好性及成本效益，并结合其在明挖沟槽回填、建筑肥槽回填等工程中的成熟应用经验，深入评估流态固化土在非开挖复杂工况下的适应性和可靠性。结果表明，流态固化土凭借良好的流动性能、可控的固化时间及较高的最终强度，可实现对环隙的有效充填和结构支撑，满足工程实际需求；同时，在工程废弃泥浆资源化利用方面展现出显著环保和经济价值。

Abstract:

To address the common challenge of circumferential gap filling in pipe jacking non-excavation construction, this study systematically investigates the technical feasibility and application potential of fluidized solidified soil for large-diameter pipe casing gap filling. Through comprehensive analysis of material performance indicators, on-site construction processes, environmental friendliness, and cost-effectiveness of fluidized solidified soil, combined with its proven applications in open-cut trench backfilling and building foundation backfilling projects, the adaptability and reliability of this material under complex non-excavation conditions are thoroughly evaluated. The results demonstrate that fluidized solidified soil, with its excellent flowability, controllable solidification time, and high ultimate strength, can effectively fill circumferential gaps and provide structural support, meeting practical engineering requirements. Additionally, it exhibits significant environmental and economic value in the resource utilization of engineering waste slurry.