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本文就地下工程中二维平面应变问题提出了反演确定洞室围岩初始地应力及其粘弹性参数的统一方法,用五种常见的描述岩土体变形性态的粘弹性模型的参数作反演计算.文中在描述岩土体材料的粘弹性性态的本构方程用统一公式表示,通过论证提出了依据现场量测信息对初始地应力和围岩粘弹性参数进行反演计算的原理、方法和公式,包括可据以进行线弹性反演计算的数值法方程,以及可用于确定围岩粘弹性参数的反演计算方程等.此外,文末还通过算例验证对所提方法的适用性进行了论证.
In this paper, a unified method for inversion of initial stress and viscoelastic parameters of surrounding rock of a cavern is proposed for the two-dimensional plane strain problem in underground engineering, using five common parameters describing the viscoelastic model of the deformability of rock and soil. Inversion calculation. The constitutive equation describing the viscoelastic behavior of rock and soil material is expressed by a unified formula. Through argumentation, the principle of inversion calculation of the initial geostress and the viscoelastic parameters of the surrounding rock based on on-site measurement information is proposed. , Methods and formulas, including numerical method equations from which linear elastic inversion calculations can be performed, and inversion calculation equations that can be used to determine viscoelastic parameters of surrounding rocks, etc. In addition, examples are also used to verify the applicability of the proposed method. Sexuality was demonstrated.