岩体初始应力实测值的各向异性球壳模型解析

ANALYSIS ON INITIAL ROCK STRESS MEASUREMENTS BY ORTHOTROPIC SPHERICAL SHELL MODEL

提出了各向异性弹性球壳模型，并据此建立了岩体初始应力状态的解析式；得出了与全球实测应力值相吻合的解析结果，从自重应力理论的角度分析了岩体初始应力沿地表深度的分布特征。解析结果表明：岩体初始应力主要受岩体自重、地表位移、地温以及由岩体弹性参数Ｅ和μ间接表述的地质构造运动的影响；

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 between the present analysis and the insitu measurement.