WANG Xiu-ying, ZHANG Zhen, LU He-lin, et al. A study of ground deformation when excavating tunnel in soil by Mechanical pre-cutting method[J]. 2005, 26(1期 刊出日).
WANG Xiu-ying, ZHANG Zhen, LU He-lin, et al. A study of ground deformation when excavating tunnel in soil by Mechanical pre-cutting method[J]. 2005, 26(1期 刊出日).DOI:
The Mechanical pre-cutting method used in soft ground is a kind of preparative support
it allows tunnel excavation work to be conducted efficiently under the safe pre-lining. In this paper
a 3D FEM program based on tunnel mechanics and elastic-plastic theory is developed to analyze the ground deformation when excavating tunnel by Mechanical pre-cutting method and the conventional full section method. The result show: the Mechanical pre-cutting method has evident advantage in controlling ground deformation compare to the conventional full face method because of its preparative support function. The pre-cutting method can reduce the ground deformation range and extent in tunnel construction
so it can be used in tunnel construction in the district where the strict limitations on surface settlement is set.