中文摘要：

地球媒介的非线性的弹性生产之间的数字差别动态并且岩石的静态的模量。动态模量与超声的速度测量被计算，小周期的模量在装载卸掉实验与小周期被计算，静态的模量在大周期从压力紧张曲线的斜坡被计算，Young' s 模量在在模量之间的测量 point.The 关系中从应力的比率被获得到紧张，紧张振幅被在小周期改变紧张振幅学习。从不同测量方法获得的 moduli 因此被比较。动态模量最大的结果表演，小周期的模量占据第二个位置，静态的模量大周期第三，并且最后幼仔的模量最小。岩石的非线性的模量是紧张水平和紧张振幅的功能。模量与上升紧张振幅指数地减少，当有上升紧张的增加铺平时。最后，下午模型的基本概念简短被介绍，在模量和紧张振幅之间的关系被有不同分发密度和不同 open-and-close 压力的岩石解释微裂缝。

英文摘要：

Nonlinear elastidty of the earth medium produces a numerical difference between the dynamic and the static modulus of rock. The dynamic modulus is calculated with the ultrasonic velocity measurement, the small-cycle modulus is calculated with small cycles in the load-unload experiment, the static modulus is calculated from the slope of the stress-strain curve in the large cycle, the Young＇ s modulus is obtained from the ratio of stress to strain in the measured point. The relationship between the modulus and the strain amplitudes is studied by changing the strain amplitude in the small cycles. The moduli obtained from different measuring methods are thus compared. The result shows that the dynamic modulus is the largest, the small-cycle modulus takes the second place, the static modulus of bigger-cycle is the third, and finally the Young＇s modulus is the smallest. Nonlinear modulus of rock is a function of the strain level and strain amplitude. The modulus decreases exponentially with the ascending of the strain amplitude, while increases with the ascending of the strain level. Finally, the basic concept of the P-M model is briefly introduced and the relationship between the modulus and strain amplitude is explained by the rock having different distribution densities and the different openand-close stresses of the micro-cracks.