(上海交通大學(xué)建筑工程與力學(xué)學(xué)院， 上海 200030)
摘 要: 提出了各向異性彈性球殼模型， 并據(jù)此建立了巖體初始應(yīng)力狀態(tài)的解析式； 得出了與全球?qū)崪y應(yīng)力值相吻合的解析結(jié)果， 從自重應(yīng)力理論的角度分析了巖體初始應(yīng)力沿地表深度的分布特征。解析結(jié)果表明： 巖體初始應(yīng)力主要受巖體自重、地表位移、地溫以及由巖體彈性參數(shù)E和μ間接表述的地質(zhì)構(gòu)造運動的影響；水平面內(nèi)最大及最小正應(yīng)力的差異主要取決于巖體各向異性特征。
關(guān)鍵字: 巖體初始應(yīng)力 最大水平應(yīng)力 最小水平應(yīng)力 各向異性球殼模型解析
（Shanghai Jiao Tong University, Shanghai 200030, P. R. China）
Abstract:An orthotropic spherical shell model has been presented. The elementary equations for initial rock stress analysis have been established in 3D elastic theory. By this method, it is capable to calculate the initial rock stress in any depth below surface, and then trend of maximum and minimum horizontal stress has been investigated based on the gravity field theory. It is shown that the calculation agrees with the initial rock stress measurements observed in the world. In addition, the case example shows a close agreement bet ween the present analysis and the insitu measurement.
Key words: initial rock stress maximum and minimum horizontal stress
orthotropic spherical shell model analysis
