Dry-wet cycle type true triaxial test system

Abstract

The invention provides a dry-wet cycle type true triaxial test system. The system comprises a true triaxial pressure chamber, an axial hydraulic source, an x-direction-loaded first hydraulic source, an x-direction-loaded second hydraulic source, a y-direction-loaded first hydraulic source, a y-direction-loaded second hydraulic source, an inflation device, a gas heating device, a gas drying and cooling device, a first high-precision electronic scale, a waste gas treatment device, a water tank, a second high-precision electronic scale, a liquid injection pump and a computer. According to the system, the simulation of rock-based different stress environments and water environments can be realized, the experimental study for the water deformation and damage of soft rocks can be carried out, the whole process and mechanism for the deformation and damage of watered soft rocks can be revealed, and the system has important theoretical and practical significances to the safe regulation and control of projects and the disaster defense.

Description

Technical field: [0001] The invention belongs to the field of rock mechanics test instruments, and particularly relates to a dry-wet cycle true triaxial test system, which is suitable for simulating the complex water environment where rocks exist, and can perform dry-wet cycle during the test process. Background technique: [0002] The study of water-rock interaction is one of the frontier subjects of rock mechanics and engineering geology in the world. The interaction between soft rock and water and its coupling effects, as the key and difficult issues, have become the common concern of the academic and engineering circles. focus. [0003] According to the data released by the Ministry of Land and Resources: From 2011 to the end of 2015, the average annual direct economic loss caused by geological disasters in my country reached 5.468 billion yuan, and the number of dead / missing people reached 388.8. More than 90% of these disasters are concentrated in the southern humid a...

AI Technical Summary

Problems solved by technology

In actual engineering, rainfall infiltration and groundwater level fluctuations make the rocks in a flowing water environment, and the rocks bear the pressure of the overlying strata or external loads at the same time. Experimental research is limited by the level of existing instruments and equipment. Rock samples are usually soaked first, and then subjected to mechanical property tests, and the solution is static during soaking or testing, which is inconsistent with the actual environmental conditions of rocks in actual engineering. , which seriously restricts the research on the deformation and failure mechanism of soft rock in contact with water

Images