A large-scale in-situ triaxial creep test system for rock and soil

Abstract

The invention relates to a rock-soil mass large size in-situ triaxial creep test system. The system includes an axial pressure loading subsystem, confining pressure loading subsystems and a background control computer. The axial pressure loading subsystem is disposed at the top of a to-be-tested cylindrical rock-soil mass test block and has a first displacement meter, and the axial pressure loading subsystem and the first displacement meter are connected to the background control computer respectively through a line; the side wall of the to-be-tested cylindrical rock-soil mass test block is wrapped with a rubber layer, the confining pressure loading subsystems disposed on the outer surface of the rubber layer and have a plurality of second displacement meters internally, and the confining pressure loading subsystems and the plurality of second displacement meters are connected to the background control computer respectively through a line; and the confining pressure loading subsystems are externally sleeved with a counter-force fixation frame module. The system provided by the invention has the advantages of simple structure and convenient use, in the test process, the rock-soil mass test block has sufficient deformation space and stable confining pressure, at the same time rock-soil mass creep deformation wholeness can be monitored in real time, and the measurement structure is accurate.

Description

technical field [0001] The invention relates to an instrument for a triaxial creep test of a rock and soil body, in particular to a large-scale in-situ triaxial creep test system for a rock and soil body. Background technique [0002] Creep refers to the phenomenon that the strain of a solid material increases with time under the condition of keeping the stress constant. Rock and soil creep can lead to the destruction of human engineering or the occurrence of geological disasters, such as landslides, foundation settlements, landslides and so on. The creep test of rock and soil is an important means to measure its long-term mechanical behavior, so the research on the creep phenomenon of rock and soil is of great significance. [0003] At present, there have been a lot of researches on the creep phenomenon of rock and soil mass, and various creep test methods have emerged at the same time, such as shear creep test, uniaxial compressive creep test, conventional triaxial (false...

AI Technical Summary

Problems solved by technology

At present, there are few studies on the triaxial creep test of in-situ large-scale rock and soil, and there are certain deficiencies in the existing test methods and corresponding instruments. The triaxial creep test system of in-situ large-scale rock and soil needs to be further developed.

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