昆明新机场航站区断层通过区岩基稳定性研究

Assessment of the terminal area foundation stability of the fault zone in the Kunming newly built airdrome

昆明新机场航站区场地地基被F10断层分割成受断层影响的地基和未受断层影响的地基,因此如何正确评价断层通过区的岩基稳定性是机场建设前期的关键。本文通过建立昆明新机场航站区岩基剪切破坏模式,运用Hoek-Brown准则的滑移线理论对岩基整体剪切破坏,以及运用极限平衡分析沿结构面剪切破坏进行了计算和评价,其结果是F10断层不会对航站区地基稳定性构成影响。

The foundation of the Kunming newly built airdrome was divided by fault F10 into the foundation area affected by the fault and the foundation area unaffected by the fault. The key to the construction is how to truly assess the stability of the fault foundation area. In this paper,the batholith shear failure mode of the Kunming new airport terminal area is established by using the Hoek-Brown criterion of slip line theory to assess the foundation general shear failure,and the limit equilibrium analysis is used to calculate and evaluate the shear failure along the structure plane. The result indicate that the fault F10 does not affect the stability of foundation in the terminal area.