Device and method for accurate compression molding of test piece during similar material confecting process

Abstract

The invention relates to a device and a method for accurate compression molding of a test piece during a similar material confecting process. The device comprises a material molding mold and an accurate compression control system, wherein the material molding mold is detachable so as to facilitate the coating of a release agent in early period and de-molding of the test piece in later period; and the accurate compression control system can display the pressure and set the pressure to be applied to compress the test piece. By adopting the accurate compression system of the test piece during the similar material confecting process for a geo-mechanics model test, the problem that the pressure exertion and the material dosage cannot be controlled during the test piece confecting process in a traditional manual mode; and the pressure exertion can be controlled accurately during the manufacturing process of the similar material test piece, and therefore the quality error of the test piece is reduced, the difference of mechanical parameter caused by the manufacturing of various test pieces is reduced, and the obtained experimental data can well guide the confecting of similar materials.

Description

technical field [0001] The invention relates to a model test technology, in particular to a device and method for precise pressing and forming of test pieces in the preparation process of similar materials. Background technique [0002] With the development of my country's economy, science and technology, and the rapid development of transportation, the development and utilization of underground space has increasingly reflected huge economic and social benefits. The development and utilization of underground space in my country is developing in a modern and scientific direction. With the continuous increase in the number and scale of underground projects, many scholars are studying the optimization of underground engineering design and construction methods in various ways, and exploring the mechanical laws of the construction process. Among them, model test is one of the effective methods to study the law of underground engineering construction process. [0003] The model t...

AI Technical Summary

Problems solved by technology

However, in the current underground engineering model experiments, there are some weaknesses in the production of test pieces in the process of preparing similar materials. Therefore, the compactness of the prepared test pieces is not uniform, which leads to a large difference in the mechanical test parameters between the test pieces with the same ratio, and it is difficult to obtain accurate data to guide the deployment of materials, which exacerbates the difficulty of material preparation.

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