Abstract：High water pressure and high ground stress jointly control the stress state and damage accumulation evolution degree of rock, which in turn affects its static viscosity performance. In order to study the variation characteristics of the viscous properties of high water pressure and high stress rock, based on Kelvin model and ultrasonic propagation test, a method for measuring the static viscosity coefficient of high water pressure and high stress rock is proposed. Using the self-developed high water pressure and high stress rock ultrasonic testing system, the ultrasonic propagation tests of red sandstone and limestone under different water pressure and axial static stress are carried out, and the experimental value of attenuation coefficient and the theoretical value of static viscosity coefficient are calculated. The frequency correlation between attenuation coefficient and static viscosity coefficient is studied to determine the calculation frequency of rock static viscosity coefficient. The ultrasonic velocity calculated by the static viscosity coefficient is compared with the measured wave velocity to verify the correctness of the static viscosity coefficient measurement method. The static viscosity coefficient of rock with high water pressure and high stress is calculated, and the influence law and mechanism of water pressure and axial static stress on the static viscosity coefficient of rock are explored. The results show that the method proposed in this paper to calculate the static viscosity coefficient of rock with high water pressure and high stress by using ultrasonic test and Kelvin model is feasible. With the increase of water pressure, the static viscosity coefficient of red sandstone increases first and then decreases gradually, and the relationship between them is Gaussian function. The static viscosity coefficient of limestone increases rapidly and then develops slowly or decreases slightly with the increase of water pressure. With the increase of axial static stress, the static viscosity coefficients of red sandstone and limestone increase first and then decrease, and the two satisfy the quadratic function relationship.
黄方博，熊慧颖，金解放，袁 伟，肖莜丰，方立兴，彭孝旺，郝 爽. 高水压高应力岩石静态黏性系数测定方法及其演化特性[J]. 岩石力学与工程学报, 2025, 44(S2): 172-187.
HUANG Fangbo, XIONG Huiying, JIN Jiefang, YUAN Wei, XIAO Youfeng, FANG Lixing, PENG Xiaowang, HAO Shuang. Determination method of static viscosity coefficient of rock under high water pressure and high stress and its evolution characteristics. , 2025, 44(S2): 172-187.
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2025, Vol. 44 
