摘要
在实测资料的基础上,用三维有限元和边界荷载调整法大致模拟工程区的初始地应力;在获得了模拟的初始地应力资料以后,建立了地下厂房的概化三维模型,用非线性有限元对厂房开挖后围岩内的地应力重分布和塑性开展区分布作了分析,评价了厂房的围岩稳定性,其结果与实际开挖情况基本吻合。
Based on measured data,the initial ground stresses of the project area were simulated approximately by three_dimesional FEM and boundary load adjustment method.A generalized 3-dimensional model of underground powerhouse was set up on the basis of acquired data of simulated initial ground stresses.Nonlinear FEM was used to analize the redistribution of ground stresses in surrounding rock and distribution of plastic developed zones after the excavation of underground powerhouse so as to appraise the stability of surrounding rock of underground powerhouse.The results were identical to the real state of excavaton in general.
出处
《人民珠江》
2005年第1期40-42,共3页
Pearl River
关键词
地下厂房
稳定
地应力
模型
underground powerhouse
stability
ground stress
model
