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Home > Urban and Rural Studies > 2022 No.19 > 上软下硬地层盾构近距离下穿机场线施工安全技术研究

  • 上软下硬地层盾构近距离下穿机场线施工安全技术研究

    Author(s)：

    刘建华

    Publication Title：

    Urban and Rural Studies 2022 No.19

    Affiliations：

    中国水利水电第四工程局有限公司

    Abstract：

    盾构小净距下穿既有地铁线对结构变形及沉降影响较大，尤其是在上软下硬等复杂地层掘进时，如何确保盾构安全掘进及有效控制对既有线的影响成为施工的关键。本文以华中某地铁区间盾构施工为例进行分析，通过试验段总结掘进参数、分阶段细化掘进参数、克泥效填充支护盾壳外部间隙、自动化实时动态监控、新型泡沫剂改良渣土、止水环封闭穿越段两端及动态优化注浆充填等措施有效控制既有地铁2号线沉降值控制在-1mm内，为今后类似盾构机穿越既有线施工积累经验。

    Keywords：

    上软下硬；盾构；施工安全

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    [1] 刘建华.上软下硬地层盾构近距离下穿机场线施工安全技术研究[J].Urban and Rural Studies,2022(19),.

城镇建设
Urban and Rural Studies

Language: 中文

CN：10-1589/TU

ISSN：2096-6539

Publication Frequency: 半月刊

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