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利用声波在弹性介质中的传播特性,阐述了在鱼田堡煤矿进行的地应力超声波检测,并通过多元非线性模拟方法和二次正交变换,得到了被测点的声波椭球,然后在实验室进行了不等压三轴条件下应力与声波关系的实验研究,得出了被测点的应力椭球,从而确定出了测点部位处三个主应力方向和量级,为地应力场的数值分析提供了一定的依据。
By using the propagation characteristics of acoustic waves in elastic media, the geostress ultrasonic testing at Yuandabao Coal Mine is expounded. The acoustic ellipsoid of the measured point is obtained by multivariate nonlinear simulation and quadratic orthogonal transformation. Then, In the laboratory, the relationship between stress and sound wave under unequal pressure triaxial conditions was studied and the stress ellipsoid of the measured point was obtained. The directions and magnitudes of the three principal stresses at the measuring point were determined. Field numerical analysis provides a basis.