A method of making a sample containing non-penetrating cross joints

Abstract

The invention discloses a method for making a sample containing non-penetrating cross joints. Now, the T-shaped iron sheet is arranged in the sample preparation mold, and then the gypsum material is used for pouring. After the initial setting of the rock-like sample is completed, the hanging buckle and the T-shaped iron sheet are removed, and the gaps in the rock-like sample are the non-penetrating cross joints of the rock-like sample. At the same time, multiple groups of cross joints can be prefabricated, and the position of the cross joints can be controlled by adjusting the position of the lifting buckle, which better ensures the strength uniformity of the rock samples containing non-penetrating cross joints and ensures that the test Effect. The invention is used in the field of rock mass sample preparation method.

Description

technical field [0001] The invention relates to the field of rock mass sample preparation methods, in particular to a method for making samples containing non-penetrating cross joints. Background technique [0002] Rock mass is a kind of complex engineering medium widely encountered in large-scale infrastructure projects such as water conservancy, transportation, mining, and petroleum. Due to the formation of various complex geological processes in the entire geological history period, it has formed a variety of geological structures. , for example, anisotropic heterogeneous composite structures composed of sliding surfaces, joints, cracks, faults, etc. Among them, the research methods and mechanical mechanisms of non-penetrating jointed rock mass are relatively complicated, and have always been a hot and difficult issue in the field of rock mechanics. For the study of non-penetrating joints, the commonly used methods are theoretical analysis and numerical simulation, which...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the method of making samples first and then inserting pieces is adopted in the process of making joints, which will lead to uneven strength of the samples themselves, and the strength of the inserting piece position will be higher than that of the edge position

During the insertion process, there may be a problem that the steel sheet cannot be inserted smoothly. Since the rock-like sample is produced, and the thickness of the steel sheet itself is small, if particles with a particle size larger than the thickness of the steel sheet are encountered during the insertion process , the insertion piece will fail with a high probability, so the idea of ​​prefabricating joints at any position of the sample cannot be realized

Moreover, the existing mold boxes are often inconvenient to operate

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