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煤矿岩石多属正交类及旋转正交类各向异性体,从弹性参数的四阶张量变换出发,得出了室内单轴压缩条件下进行各向异性岩石弹性参数测定的原理、方法与算式;从点的动平衡方程出发,利用系数非零解的充要条件,得出用声学法测定参数的原理、方法与算式;按旋转对称问题的弹性解,得出了双向光应变计进行应力量测的原理、方法与算式,并使常用的在各向同性体中应力量测的表达式成为特例;论述了孔底应力解除的原理、方法与算式,解决了绝对应力量测问题。上述所有公式已用于实践,并给出了一些实际数据。
Most of coal mine rocks belong to orthorhombic and rotationally orthogonal anisotropic bodies. Based on the fourth-order tensor transformation of elastic parameters, the principle, method and method for anisotropy of rock elastic parameters under uniaxial compression are obtained Based on the dynamic equilibrium equation of the point, the necessary and sufficient conditions of non-zero solution of the coefficient are used to get the principle, method and calculation formula of the acoustic parameter determination method. According to the elastic solution of rotational symmetry problem, The principle, method and formula of stress measurement are taken as special cases. The expression of stress measurement in isotropic body is taken as a special case. The principle, method and calculation formula of stress relief at the hole bottom are discussed, and the problem of absolute stress measurement is solved. All the above formulas have been used in practice and some actual data are given.