全断面富水砂层土压平衡盾构地表沉降控制

Surface Settlement Control of Earth Pressure Balance Shield in Whole Section Water Rich Sand Layer

以郑州市轨道交通3号线某盾构区间为工程实例,对土压平衡盾构机掘进全断面富水砂层过程中地表沉降监测数据进行整理,并对产生地表沉降的原因进行分析总结,再根据土压平衡盾构机的特点和地层性质,提出有效沉降控制措施,研究成果可为土压平衡盾构在类似地层中的掘进提供借鉴。

Taking a shield section of Zhengzhou Rail Transit Line 3 as an example,the earth pressure balance shield machine driving whole section water rich sand layer in the process of surface subsidence monitoring data,and analyze the causes of ground surface subsidence,again according to the characteristic of earth pressure balance shield machine and the characteristics of the formation,effective settlement control measures are proposed.The research results can provide reference for the excavation of the earth pressure balance shield in similar strata.