深厚富水粉土粉砂层条件下地下连续墙控制技术研究

Study on Control Technology of Underground Diaphragm Wall under the Condition of Deep and Water-rich Silty Sand Layer

随着全国轨道交通的迅猛发展,轨道交通线网纵横交错,地铁车站围护埋深也在随之加深。苏州轨道交通3号线竹园路站施工时,通过分析深厚富水粉土粉砂层条件下地下连续墙成槽的塌方、缩径露筋、接缝夹泥的原因,提出了相应的控制技术,在实际施工时进行了监测和分析,保证了深厚富水粉土粉砂层条件下超深地下连续墙质量。

The rail transit network is crisscrossed,and the depth of the underground railway station is also deepened with rapid development of national rail transit. Corresponding control technology is proposed through analyzing the causes of landslides,diameter reduction rib exposure and joint mud clamping in underground diaphragm wall under the condition of deep and water-rich silty sand layer during construction of Zhuyuan Road Station in Suzhou rail transit line 3. The control technology is monitored and analyzed during practical construction,thereby ensuring the quality of underground diaphragm wall under the condition of deep and water-rich silty sand layer.