Long-duration high-precision rheological test system for simulating deep geological complex conditions

Abstract

The invention belongs to the technical field of rheological test systems, and particularly provides a series of long-duration high-precision rheological test systems for simulating deep geological complex conditions, which comprise a triaxial compression rheological test system, a uniaxial compression rheological test system and a uniaxial tensile rheological test system. The high-precision rheological test system comprises a sample mounting assembly, a loading mechanism and a hydraulic station module, wherein the sample mounting assembly and the loading mechanism are connected with each other, and the hydraulic station module is connected with the sample mounting assembly and the loading mechanism for supplying liquid. According to the high-precision rheological test system provided by the invention, the stabilized load formed by the dead weight of the load is transmitted to the test sample through the hydraulic equipment, electric power is not needed any more in the pressure stabilizing process to ensure the constancy of the applied load, and the long-term stable load requirement is met; the continuity of applying small tonnage or small stress to large tonnage or large stress in the loading process can be ensured, the loading stability under the long-term loading condition is maintained, the measurement is more convenient, and the measurement result is more reliable.

Description

technical field [0001] The present invention relates to the technical field of rheological test systems, specifically, it is a series of long-term simulation systems for simulating complex deep conditions including a triaxial compression rheological test system, a uniaxial compression rheological test system, and a uniaxial tensile rheological test system. It is a high-precision rheological test system. Background technique [0002] Under the action of load, any material will continue to deform over time; as the temperature increases, the deformation rate of the material under constant load will increase, resulting in the deterioration of the mechanical properties of the material. Moreover, under the action of water seepage, the process of material deformation and deterioration of mechanical properties will be further accelerated. The rheological properties of the material directly determine the long-term mechanical properties of the material, especially for deep-buried roc...

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Problems solved by technology

However, in the power control mode, the power failure will lead to the interruption of loading; because the rock is continuously deformed, and the hydraulic loading cannot replenish the liquid medium in the bearing pressure chamber in time, resulting in a drop in the liquid pressure, thereby causing a decrease in the applied load. No guarantee of constant load or stress under long-term loading conditions

In addition, the existing gravity loading method mainly relies on the moment arm of the lever arm to output a large tonnage load, which in turn causes the load to be applied from a certain value, and it is impossible to achieve the same test piece from a low tonnage small load to a large tonnage load during the test. Continuous application of large tonnage loads

[0005] In summary, the existing experimental methods cannot ensure the constant and reliable lateral stress and axial load during the rheological test, as well as the continuous application of the load.

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