Formation deformation is inevitable in subway tunnel construction, and serious consequences will be caused if it is not controlled in time. Especially for shield tunnel under the condition of soft soil stratum, the st...Formation deformation is inevitable in subway tunnel construction, and serious consequences will be caused if it is not controlled in time. Especially for shield tunnel under the condition of soft soil stratum, the stratum deformation will be more complicated due to its high water content, large pore ratio, high compressibility, low strength, high sensitivity, easy thixotropy, rheology and other undesirable characteristics. Therefore, how to effectively guarantee the safety of tunnel construction in soft soil stratum has become the focus and difficulty of engineering control. Taking the large shield tunnel construction as an example, this paper analyzes the data of shield construction in soft soil stratum, and puts forward the shield tunneling construction technology and matters needing attention in similar stratum, so as to provide reference for shield construction in soft soil stratum in the future.展开更多
文摘Formation deformation is inevitable in subway tunnel construction, and serious consequences will be caused if it is not controlled in time. Especially for shield tunnel under the condition of soft soil stratum, the stratum deformation will be more complicated due to its high water content, large pore ratio, high compressibility, low strength, high sensitivity, easy thixotropy, rheology and other undesirable characteristics. Therefore, how to effectively guarantee the safety of tunnel construction in soft soil stratum has become the focus and difficulty of engineering control. Taking the large shield tunnel construction as an example, this paper analyzes the data of shield construction in soft soil stratum, and puts forward the shield tunneling construction technology and matters needing attention in similar stratum, so as to provide reference for shield construction in soft soil stratum in the future.
