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为了研究砂岩的应力弛豫衰减随温度和频率的变化规律,笔者在0.1~10HZ的频率范围内进行了饱和砂岩强迫共振试验。实验结果证明:降低温度与增加频率是等效的;砂岩振动的衰减峰随饱和流体的黏滞系数的增加向高温方向移动;黏滞系数和频率对砂岩振动的衰减的影响起相同的作用;随着孔隙率的增大,砂岩振动的衰减也增大。
In order to study the variation of stress relaxation attenuation of sandstone with temperature and frequency, the author conducted a forced sand resonance test in the frequency range of 0.1 ~ 10Hz. The experimental results show that decreasing the temperature is equivalent to increasing the frequency. The attenuation peak of sandstone moves toward higher temperature with the increase of the viscosity coefficient of saturated fluid. The effect of viscosity and frequency on the attenuation of sandstone vibration plays the same role. With the increase of porosity, the attenuation of sandstone vibration also increases.