王浩杰, 王志勇, 周智, 张晓平, 蒋浩梁, 唐少辉, 李方毅. 2019: 复合地层土压平衡盾构滚刀磨损规律及切削距离寿命预测分析. 工程地质学报, 27(s1): 95-103. DOI: 10.13544/j.cnki.jeg.2019074
    引用本文: 王浩杰, 王志勇, 周智, 张晓平, 蒋浩梁, 唐少辉, 李方毅. 2019: 复合地层土压平衡盾构滚刀磨损规律及切削距离寿命预测分析. 工程地质学报, 27(s1): 95-103. DOI: 10.13544/j.cnki.jeg.2019074
    WANG Haojie, WANG Zhiyong, ZHOU Zhi, ZHANG Xiaoping, JIANG Haoliang, TANG Shaohui, LI Fangyi. 2019: PREDICTION AND ANALYSIS ON THE WEAR LAW AND CUTTING LIFE OF DISC CUTTER OF EARTH PRESSURE BALANCED SHIELD TBM IN COMPOSITE STRATA. JOURNAL OF ENGINEERING GEOLOGY, 27(s1): 95-103. DOI: 10.13544/j.cnki.jeg.2019074
    Citation: WANG Haojie, WANG Zhiyong, ZHOU Zhi, ZHANG Xiaoping, JIANG Haoliang, TANG Shaohui, LI Fangyi. 2019: PREDICTION AND ANALYSIS ON THE WEAR LAW AND CUTTING LIFE OF DISC CUTTER OF EARTH PRESSURE BALANCED SHIELD TBM IN COMPOSITE STRATA. JOURNAL OF ENGINEERING GEOLOGY, 27(s1): 95-103. DOI: 10.13544/j.cnki.jeg.2019074

    复合地层土压平衡盾构滚刀磨损规律及切削距离寿命预测分析

    PREDICTION AND ANALYSIS ON THE WEAR LAW AND CUTTING LIFE OF DISC CUTTER OF EARTH PRESSURE BALANCED SHIELD TBM IN COMPOSITE STRATA

    • 摘要: 软硬不均复合地层中地质条件频繁变化,盾构滚刀磨损加剧严重制约施工效率。为探索复合地层土压平衡盾构机滚刀耐磨蚀改进措施,准确预测复合地层土压平衡盾构滚刀的磨损量与切削距离寿命,本文采用统计回归法对广州地铁18号线工程ZDK30+433.76~ZDK31+150.61区间盾构滚刀更换情况及磨损量进行统计分析。通过利用滚刀磨损量以及盾构掘进参数得到了适用于软硬不均复合地层的滚刀磨耗系数K。根据磨耗系数K及相应的滚刀磨损计算模型,对复合地层中土压平衡盾构滚刀磨损量及切削距离寿命进行预测分析,从滚刀的设计制作、施工参数、现场监管和渣土改良4个方面提出了复合地层滚刀的耐磨蚀改进措施,并对土压平衡盾构掘进参数进行优化,提出了沙湾水道段的推荐刀盘转速值。该研究成果为广州地铁18号线工程及类似地层条件下盾构滚刀磨损预测及换刀时机选取提供了工程经验与理论依据。

       

      Abstract: Geological conditions changes frequently in the composite strata contained various soft and hard rocks. The serious wear of disc cutter severely restricts the construction efficiency. In order to explore the wear resistant measures and predict the wear extent and cutting life of the disc cutter of earth pressure balanced(EPB)shield TBM in composite strata, the statistical regression method was used to analyze the wear extent and replacement process of disc cutter in the excavation interval of ZDK30+433.76to ZDK31+150.61 of the Guangzhou Metro Line 18. Based on the actual wear extent of disc cutter and the tunneling parameters of EPB shield TBM,the wear coefficient K suitable for the composite strata contained various soft and hard rocks is obtained. Then, the wear extent and the cutting life of disc cutter of EPB shield TBM in the composite strata are predicted and analyzed according to the wear coefficient K and the corresponding disc cutter wear model. Subsequently, measures such as the improvement of disc cutter, the optimization of construction parameters, the majorization of management and the amelioration of residue are proposed to reduce the wear extent of disc cutter. Finally, the optimization of the tunneling parameters of the EPB shield TBM this project is carried out, and the recommended rotation speed for EPB shield TBM under-passing the Shawan waterway is proposed. The study provides engineering experience and theoretical basis for the prediction of disc cutter wear and the choice of tool change opportunity in Guangzhou Metro Line 18 and similar tunnels project in composite strata.

       

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