Based on practical engineering, considering the characteristics of unsymmetrical loading, shallow burying, and weak surrounding rock tunnel, MIDAS finite element software is adopted to analyze influence effect deformation a temporary steel support when tunnel excavated by two-step center diaphragm method (CDM). The simulation results are compared with field monitoring results. It can be seen th...

Abstract Since the safety and stability of original tunnel structure are easily affected by adjacent foundation pit excavation, it is strongly necessary to study deformation evolution tunnels during excavation. With regard two cases that adjacently located at right bottom pit, influence different supporting methods, including pile support, bolt pile-bolt shotcrete-bolt on was investigated basis...

Abstract In the planning of tunnel support system, besides detailed investigation geological-geotechnical conditions, it is also important to investigate structure-tunnel interaction. Especially structures located in close vicinity tunnels built unpredictable geological conditions should be considered as a part system design and performed. However, strong heterogeneity anisotropy characteristic...