Soft rock uniaxial creepmeter adopting servo loading and mechanical pressure stabilization

Abstract

The invention belongs to the technical field of indoor tests of rock mechanics and engineering, and particularly relates to a soft rock uniaxial creepmeter adopting servo loading and mechanical pressure stabilization. The soft rock uniaxial creepmeter comprises a servo motor loading device, a servo motor loading control unit, a mechanical loading device and a mechanical pressure stabilization device, wherein the creepmeter adopts a mechanical pressure stabilization mode, namely weight balancing pressure stabilization, to overcome the defects of poor pressure stabilization effect, low servo accuracy and power failure influence on the test progress of an existing servo-controlled rock uniaxial compression rheometer within a long-time range; by adoption of servo motor pressurization and mechanical pressurization, the servo motor pressurization is supplemented by the mechanical pressurization, so that the defects that a common mechanically controlled uniaxial creep tester needs to be manually loaded, which wastes time and labor, are overcome; and furthermore, the mechanical pressure stabilization device can supplement pressure in real time to guarantee long-term stability of a load through the weight balancing pressure stabilization mode even if the test piece has a compression creep deformation.

Description

technical field [0001] The invention belongs to the technical field of indoor testing in the field of rock mechanics and engineering, and in particular relates to a soft rock uniaxial creep instrument adopting servo loading and mechanical voltage stabilization. Background technique [0002] Rock rheological properties refer to the properties of rocks whose strength and deformation slowly change with time under the action of force. Through the study of rock rheological properties, analysis and judgment can be made on the long-term stability of rock engineering. Creep refers to the phenomenon that the deformation of rock increases with time under the action of constant temperature and constant pressure. research in different ways. [0003] At present, rock mechanics workers have conducted a large number of laboratory tests on the rheological properties of rocks, especially soft rocks. Among them, the soft rock uniaxial compression creep test is the most basic and most import...

AI Technical Summary

Problems solved by technology

However, this kind of testing machine needs to be manually loaded, and the loading process is time-consuming and laborious, and it is inconvenient to use; it is difficult to ensure that the load is applied according to the predetermined loading speed during the manual loading process, which will have a certain impact on the strength of the specimen; in addition, the lever system takes up more space. Large, inconvenient for test operation

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