High-temperature three-axis test pressure transfer solid pre-loading mechanism and method

Abstract

The invention relates to a high-temperature three-axis test pressure transfer solid pre-loading mechanism and a high-temperature three-axis test pressure transfer solid pre-loading method. The pre-loading mechanism mainly consists of a high-temperature pressure chamber, a center cylinder press head, a side cylinder press head, a bottom cylinder press head, an axis press head, a surrounding press sleeve, an upper press head and a lower press head, wherein the bottom cylinder press head is positioned under the high-temperature pressure chamber, the diameter of the bottom cylinder press head is a little smaller than the inner diameter of the high-temperature pressure changer, and the bottom cylinder press head can penetrate through the high-temperature pressure chamber; the side cylinder press head and the center cylinder press head are positioned above the high-temperature pressure chamber, the side cylinder press head has the annular outer diameter, the annular outer diameter is a little smaller than the inner diameter of the high-temperature pressure chamber, and the side cylinder press head can penetrate through the high-temperature pressure chamber; and the center cylinder press head is positioned inside the side cylinder press head and can penetrate through the side cylinder press head. The bottom cylinder press head supports experiment samples and pressure transfer solids, the center cylinder press head tightly presses and fixes the experiment samples, the pressure transfer solids are compressed through the repeated loading by the side cylinder press head, the pressure transfer solid pre-loading speed is accelerated, the pre-loaded pressure transfer solids are compact and firm, the compressible quantity is reduced, and the experiment precision is improved. The structure of the pre-loading mechanism is compact and structure, the operation is easy, the pre-loading is convenient, and the insulation and thermal isolation effects are good.

Description

technical field [0001] The invention relates to a high-temperature triaxial test pressure transmission solid preloading mechanism and method, and is especially suitable for high-temperature and high-pressure triaxial tests. Background technique [0002] The development of rock mechanics has always been accompanied by the development of testing machines and gradually independent of material mechanics, and has developed, grown and matured. In the early days, the tests of rock mechanics completely used ordinary material testing machines. Later, with the successful development of various large-scale rigid testing machines, a large number of related experimental researches were carried out, revealing many little-known characteristics of rocks and rock masses, which greatly promoted It has promoted the development of the subject of rock mechanics and has become an emerging subject that has an important impact on the national economy. As a kind of large-scale rigid testing machine...

AI Technical Summary

Problems solved by technology

As a kind of large-scale rigid testing machine, the confining pressure triaxial testing machine has played an irreplaceable role. Its specimen size is large and its functions are diversified, but the pre-installation process of its pressure-transmitting solid is very difficult, especially when insulation is required. with thermal insulation

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