【作者】 臧亚君；

【导师】 严明；

【作者基本信息】 成都理工大学 ， 地质工程， 2004， 硕士

【摘要】 随着我国西部大开发战略的实施，多山的西南地区机场建设进入迅猛发展阶段。这些机场主要的特点即为高填方、场区地质条件复杂、常分布有软弱土层，因而妥善解决机场高填方地基的稳定与变形是该地区机场建设的核心问题和首要问题。 本论文所研究的贵州省荔波机场是以旅游为主的支线机场，飞行区等级指标本期为3C，远期拟扩建为4C。跑道长2300米，宽45米。场区由一系列沟谷切割，地形起伏较大。在这样一个沟谷发育的斜坡地区进行高填方体施工(最大填方高度达40—60米)，高填方体的稳定性问题是关键的工程技术问题，尤其是在该场址表现尤为突出。 本论文在地质—岩体力学环境条件分析研究的基础上强调高填方地基失稳模式的地质分析，并且使用先进的二维弹塑性有限元和FLAC-3D数值模拟技术对高填方体地基的失稳模式进行分析。在此基础上结合二维极限平衡计算对高填方体的稳定性进行评价；最后对场区地基工程处理措施及填方体设计与施工提出优化建议。更多还原

【Abstract】 With the great development of West China, the airport construction in the mountainous southwest of China is coming into a prosperous period.High embankment,complex geological conditions accompanied with soft soil are the main characteristics for these airports.Therefore.properly dealing with the stability and deformation of the high embankment during the construction is the first and nuclear task in these regions.Libo airport researched in this paper is a lateral airport with main intent to tour.The grade index in flight area is 3C at this date and 4C at a future date by scale-up construction.The runway is 2300m long and 45m wide.The construction site is cutted by a series of channels and velleys.so the landform undulation is bigger.The stability and deformation of the high embankment is a key engineering technology problem because of construction is carrying through in this one slope area whose channels and velleys are developing.Especially the problem of the stability of the embankment behave outstanding specially.This paper emphasize the analysis to the high embankment foundation unstability mode on the base of analysis and research to the geology-rock mechanics conditions.And this pater using advanced two-dimensional finite element method and three-dimensional numerical simulation analysis technology to analyse the high embankment foundation unstability mode.On these base the paper adopted limiting equilibrium method to evaluate the stability of the high embankment. At last,the optimization suggestion on the engineering disposal measure to the site foundation and the design as well as construction of the embankment is brought forward.更多还原