Prefabricated crack preparation device and method for standard rock test piece
A technology for rock test pieces and manufacturing devices, which is applied in the preparation of test samples, etc., can solve the problems of crack geometric size restrictions, crack size restrictions, and the preparation of cracks that cannot be used, so as to achieve easy disassembly and assembly, and simple manufacturing process , the effect of improving work efficiency
Active Publication Date: 2018-12-25
SHANDONG UNIV
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Problems solved by technology
[0004] "Journal of Rock Mechanics and Engineering" No. 9, 2017 introduced a method to prepare double fractures in sandstone, but this method cannot be used to prepare fractures in standard specimens and cannot prepare through fractures
[0005] "Journal of Geotechnical Engineering" No. 12, 2014 introduced a single-crack standard specimen preparation method, using a mixture of water, gypsum and cement to prepare the specimen, and inserting stainless steel sheets into the unsolidified material mixture to form open cracks , but this method cannot prepare the standard fracture specimen of the original rock, and cannot obtain the real mechanical parameters of the original rock
[0006] "Journal of Rock Mechanics and Engineering" No. 6, 2008 introduced a method for making a three-dimensional fracture group. The mica sheet is fixed in the mold as a prefabricated fracture, and the specimen is made by pouring a new type of unsaturated polyester resin material, but the specimen is not the original one. rock, which is quite different
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[0046] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.
[0047] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components and / or combinations thereof;
[0048] For the convenience of description, if the words "up", "down"...
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The invention relates to a prefabricated crack preparation device and method for a standard rock test piece. The preparation device mainly comprises a cutting system, a driving system and a tabletop system. The standard rock test piece is arranged in the test piece cutter of the tabletop system and the test piece cutter comprises a crack positioning semi-open steel mold and a cutting angle adjuster. The cutting system is used for crack cutting of rock pieces. The driving system provides driving force for the cutting system. The cutting system and the driving system are arranged on the tabletopsystem. According to the prefabricated crack preparation device and method for standard rock test piece, the preparation of the inclined crack and the through crack of the standard rock test piece surface can be realized, the geometrical dimension and the cutting speed of the crack can be adjusted, the structure is simple, the manufacturing process is simple, the degree of mechanization is high,and the crack is prepared accurately, and can be widely applied to joint fracture rock mechanics tests in the field of hydroelectric, transportation, energy and mine engineering.
Description
technical field [0001] The invention relates to a device and method for making cracks in rock test pieces, in particular to a device and method for making prefabricated cracks in standard rock test pieces in mechanical tests. Background technique [0002] With the rapid development of society and the continuous increase of people's needs, the construction of underground projects in various fields such as energy, transportation, water conservancy, and national defense continues to go deep, and the deep rock mass structure is complex. Many types of defects such as cracks, fissures, joints, and beddings are formed inside the rock due to structural and atmospheric weathering, which directly affect the physical and mechanical properties of the rock, and bring great difficulty and uncertainty to the stability control of underground engineering. Certainty. Grasping the change law of the mechanical properties of fractured rock mass has very important guiding significance for the st...
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CPCG01N1/28
Inventor 张强勇张振杰李术才向文尹相杰李帆丁炎志王斌
Owner SHANDONG UNIV
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