复合地层盾构渣土渗透性能试验研究  

Experimental Study on the Permeability of Shield Muck in Composite Strata

作　　者：孙福双 Sun Fushuang(The 8th Engineering Co.,Ltd.of CCCC First Highway Engineering Co.,Ltd.,Tianjin 300170)

机构地区：[1]中交一公局第八工程有限公司,天津300170

出　　处：《现代工程科技》2025年第4期13-16,共4页Modern Engineering Technology

摘　　要：针对砂卵石与泥岩组成的复合地层,结合复合地层特点,采用实验手段对盾构渣土的渗透性能进行了系统的分析。试验设计选取了典型的地层样本,利用渗透性能测试仪器开展实验,采集了不同条件下的渗透数据并进行分析。实验结果揭示了砂卵石与泥岩界面效应对渗透性能的影响,明确了渣土颗粒级配与孔隙率在渗透性能变化中的关键作用,验证了水力梯度对复合地层渗透曲线变化的控制规律,并提出了对盾构渣土渗透性能的改良技术建议,为复合地层盾构施工提供了理论依据和技术支持,对隧道设计与施工具有重要指导价值。Aiming at the composite strata composed of sandy gravel and mudstone,combined with the characteristics of the composite strata,the permeability of shield muck was systematically analyzed by experimental means.The test selected typical stratum samples,carried out experiments using permeability testing instruments,collected and analyzed permeability data under different conditions.The experimental results revealed the influence of the interface effect between sandy gravel and mudstone on the permeability,identified the key role of the particle gradation and porosity of the muck in the change of permeability,verified the control law of the hydraulic gradient on the change of the permeability curve of the composite strata,and put forward technical suggestions for improving the permeability of the shield muck,providing a theoretical basis and technical support for the shield construction in the composite strata,which is of great guiding value for the tunnel design and construction.

关 键 词：复合地层 盾构渣土 渗透性能 砂卵石 泥岩 实验研究 防排水设计 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]