中文摘要：

详细地介绍了自行研制的岩石动态扰动伺服三轴试验系统,该试验系统具有在常规三轴试验的同时进行动态扰动的功能。试验系统主要由轴向加载系统、围压加载系统、动态扰动加载系统和数据采集系统构成,试验系统能达到的最大轴向荷载为2000kN,最大围压为70MPa,所能施加的最大扰动荷载为300kN,扰动荷载的最高频率可达到70Hz。运用所研制的试验系统,对大理岩进行了一组单轴压缩过程中的动态扰动试验。试验结果表明：当扰动荷载频率相同时,振幅越大,扰动至岩样破坏时经历的时间越短;反之,振幅越小,扰动至破坏时经历的时间越长。从破坏模式来看,扰动力作用下大理岩破坏较为散碎,扰动荷载振幅越小,散碎程度越高。试验机系统稳定、可靠性较高,该试验系统值得在进行深部岩石力学性质研究中推广应用。

英文摘要：

A self-developed servo-controlled rock triaxial test system with dynamic disturbance is introduced in detail. The test system can apply dynamic disturbance in the process of conventional triaxial compression. The test system consists of four parts： axial loading subsystem, confining pressure subsystem, dynamic disturbance loading subsystem and data collection subsystem. The maximum axial load and confining pressure of the test system can be 2 000 kN and 70 MPa, and the maximum dynamic disturbance load of the system can be 300 kN and the highest frequency of the dynamic disturbance load is 70 Hz. A set of experiments about dynamic disturbance in uniaxial compression is performed on marble with the developed test system. The experimental results indicate that： when the amplitudes of the dynamic disturbance are in the same frequency, the larger the amplitude of disturbance is, the shorter time is the disturbance to the rock failure, vice versa. It can be seen from the failure modes after experiments that the marble samples are fragmentized under the dynamic disturbance load. The lower the amplitude of the dynamic disturbance load is, the higher degree of fragmentation is. The servo-controlled rock triaxial test system is stable and reliable, thus it is worth generalizing the use of the testing system in other laboratories to explore mechanical properties of deep rocks.