Analysis on Construction Method and Deformation Control Technology of Shallow Buried Large Section Tunnel with Weak Surrounding Rock
[Purposes]It is of great practical significance to find effective construction and excavation technology of large section tunnel with weak surrounding rock due to the increasing of the deformation risk of the surrounding environment caused by the construction of that.[Methods]The construction method and deformation control technology of shallow buried large section tunnel with weak surrounding rock are analyzed by means of numerical simulation and field monitoring.[Findings]The results show that the three-step temporary invert method can control the deformation of shallow buried large section tunnel in weak surrounding rock.The surface settlement value,vault settlement and maximum uplift value of excavation bottom at the center of tunnel can meet the requirements of construction specifica-tions when using this method,and the corresponding numerical simulation and field detection have simi-lar variation rules.[Conclusions]The research results can provide technical support for design and con-struction of similar tunnel engineering in the future.
weak surrounding rockshallow buried large section tunnelthree-step temporary invert methoddeformation control technologynumerical simulation
万方数据
维普
