Experimental device for prefabricating three-dimensional single-crack and multi-crack processing of high-precision rock samples
A technology of rock samples and experimental devices, applied in the preparation of test samples, measuring devices, sampling, etc., can solve the problems of accurate analysis of rock mass strength and stability, etc.
Inactive Publication Date: 2019-05-03
HENAN POLYTECHNIC UNIV
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Problems solved by technology
However, this simplified two-dimensional model cannot fully reflect the three-dimensional fracture process of the rock mass, which will inevitably affect the accurate analysis of the strength and stability of the rock mass.
Method used
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[0015] Such as Figure 1 to Figure 3 As shown, a high-precision rock sample prefabricated three-dimensional single-crack and multi-crack processing experimental device of the present invention includes a body (not shown in the figure), on which a fixed block 11 is installed, and on the fixed block 11 First motor 10 and guide rail 9, described guide rail 9 moves along fixed block 11 by first motor 10, and guide rail 9 cooperates with fixed block 11 and can be dovetail slot and dovetail block, and rack is installed on guide rail 9, is driven by motor. The rack moves to drive the guide rail 9 to move. A mounting block 2 is installed at the end of the guide rail 9. A groove is arranged on the mounting block 2. An adjustable-speed hand-held electric grinder 1 is installed in the groove. The grinding tool 1 is clamped in the groove by a clamp, the clamp includes a rotating rod 3 and a clamping plate 4 positioned at the end of the rotating rod 3, the clamping plate 4 is movably conne...
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Abstract
The invention discloses a high-precision experimental device for processing prefabricated three-dimensional single fracture and multi-fracture by using a rock specimen. The high-precision experimental device comprises a body, wherein a fixed block is arranged on the body; a first motor and guide rails are arranged on the fixed block; a mounting block is arranged at the tail ends of the guide rails; a groove is formed in the mounting block; a speed-adjustable handheld electric grinding tool is arranged in the groove and is clamped in the groove by a clamp; a screw is arranged on the speed-adjustable handheld electric grinding tool; one end of the screw is arranged on a mounting plate through a bearing; a slice for processing the specimen is arranged on the screw; the bearing is limited by a bearing end cover; the mounting plate is positioned in a fixed plate; the fixed plate is fixed on a mounting table; the mounting plate vertically moves along the fixed plate. According to the high-precision experimental device disclosed by the invention, the processing depths of the fractures are controlled by driving the slice to move through the guide rails and a gear; by the movement of a moving table, the processing depths of the fractures and the work of a hydraulic rod are controlled, and a processing angle of the specimen is adjusted, so that the processed fractures better accord with the sizes of actual fractures.
Description
technical field [0001] The invention relates to a three-dimensional single-crack and multi-crack processing experimental device for prefabricating a high-precision rock sample, belonging to the rock field. Background technique [0002] The rock mass is a multi-cracked body. Under load, the interaction and penetration of cracks in the rock mass are the reasons for the fracture and instability of the rock. No matter the shear failure or the overall failure of the rock, the root cause is the cracks of various sizes and angles inside the rock. The macro-microscopic experiment of rock failure is an important method to study the failure characteristics of crack propagation mechanism in rock, and also provides original data and important parameters for the creation of constitutive model. The experimental techniques used in the study of rock mass fracture damage mainly include model experiments, acoustic emission technology, scanning electron microscope technology and CT technology...
Claims
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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 唐胡丹朱明礼朱珍德王辉任连伟王云飞孙辉闫芙蓉
Owner HENAN POLYTECHNIC UNIV