高环境风险下盾构在全断面粉细砂层中的掘进控制

Tunneling Control of the Shield in Full Face Water-rich Silty Fine Sand Layer with High Environmental Risk

本文介绍了郑州地铁2号线广~新~国区间EPB盾构在全断面富水粉细砂层中掘进遇到的一系列困难时,采取的一些相应改进措施与掘进参数调整,最终达到安全下穿重大环境风险的施工成果。

This paper introduces some corresponding improvement measures and tunneling parameters adjustment of tunneling problems of EPB shield in full face water-rich silty fine sand layer in Guang-Xin-Guo Section of Zhengzhou Metro line 2. At the end, it gets the construction results of secure underneath pass important environmental risk.