Device and method for preparing rock-like material structural plane and utilizing rock-like material structural plane to shearing test

A technology of rock materials and structural surfaces, applied in the direction of measuring devices, preparation of test samples, and analysis of materials, etc., can solve problems affecting the normal progress of tests and filling materials scattered, and achieve automatic data collection, simple installation and disassembly, and high precision Effect

Active Publication Date: 2016-11-09
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the shear test, the filling in the structural surface containing the filling is easy to scatter from both sides of the specimen with the shear displacement, which affects the normal progress of the test, so there must be a device to prevent the filling from scattering

Method used

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  • Device and method for preparing rock-like material structural plane and utilizing rock-like material structural plane to shearing test
  • Device and method for preparing rock-like material structural plane and utilizing rock-like material structural plane to shearing test
  • Device and method for preparing rock-like material structural plane and utilizing rock-like material structural plane to shearing test

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Embodiment 1

[0037] The method for preparing and shearing a rock-like material structure surface of the present invention includes the following steps:

[0038] (1) Test piece production: Assemble the front template I28, the left template I30, the right template I31, the rear template I29, and the bolts 32 (8 in total) into a rectangular mold of length×width×height=100mm×160mm×100mm, and the front template Ⅱ33, left formwork Ⅱ35, right formwork Ⅱ36, rear formwork Ⅱ34, bolts Ⅱ37 (total 8 pieces) assemble a rectangular mold of length×width×height=100mm×160mm×100mm, and then take P32.5 cement, screen sand (screen type) 20 mesh, pore size 0.85mm), and water according to its mass ratio of 26:25:10 to mix and stir. After stirring, pour into the first mold, length×width×height=110mm×170mm×5mm The thin steel plate is aligned with the mold and pressed on the upper surface, the second mold is aligned and placed on the first mold, the uniformly stirred model material is injected into the second mold, af...

Embodiment 2

[0045] This embodiment adopts the same implementation method as that of embodiment 1, the difference is: in the steps (1) and (2) of the embodiment, a step is added to prepare the interview piece containing the yellow mud structure: take step 1 and test the rock Lay the piece flat on the ground, then put the prepared yellow mud with a water content of 50% in a container to a semi-condensed state and smear it on the cracked surface with a thickness of about 5mm. Finally, cover the hanging rock sample on it until Completely condensed. After complete condensing, take a PVC pipe 26 with a length of 100mm to wrap the hanging rock block 11, filling 25, and bottom rock block 14 along the direction of the vertical structural plane, and use a high-power electric hair dryer to heat the PVC pipe to shrink it Completely adhere to the surface of the test piece, and complete the preparation of the yellow mud with 50% moisture content.

[0046] The above-mentioned treatment conditions yielded a...

Embodiment 3

[0048] This embodiment adopts the same implementation method as that of embodiment 1, the difference is: in the steps (1) and (2) of the embodiment, a step is added to prepare the gravel-containing sand layer structure interview piece: take step 1 bottom plate type rock Place the test piece flat on the ground, and then spread the selected gravel and sand evenly on the crack surface with a thickness of about 5mm. Finally, cover the hanging rock test piece on it, and take a PVC pipe 26 with a length of 100mm along the vertical structure surface. Wrap the hanging rock block 11, the filling 25, and the bottom rock block 14 in the direction of travel, and use a high-power electric hair dryer to heat the PVC pipe to shrink and fully fit the surface of the test piece to complete the preparation of the structure with gravel sand.

[0049] The above treatment conditions yielded a peak shear strength of 3.01 MPa and a peak dilatancy displacement of 0.46 mm on the structure surface of the gr...

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Abstract

The invention relates to a device and method for preparing a rock-like material structural plane and utilizing the rock-like material structural plane to a shearing test. The device comprises a test part manufacturing system, a test part system, a loading system and a data acquisition system. The device provided by the invention can realize preparation of the rock-like material structural plane and a weak intercalated layer structural plane containing different fillers, and researches on shearing properties of the structural plane can be realized.

Description

Technical field [0001] The invention relates to the preparation and shearing of rock structure surfaces and structural surfaces containing weak interlayers, in particular to a device and method for preparing and shearing rock-like material structure surfaces. Background technique [0002] Rock structural plane is a ubiquitous medium in slope engineering, dam foundation engineering, and mining engineering. A large number of discontinuities inside the rock mass affect and determine the physical and mechanical properties of the rock mass. In the secondary structural plane, weak interlayers are often due to low strength. It is the main factor that affects and determines the physical and mechanical properties of rock mass. Considering the huge investment in large-scale in-situ experiments, the current research on fractured rock masses mainly rely on indoor experimental research. It is an effective method to obtain the mechanical properties and failure laws of weak sandwich structures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N3/24
CPCG01N1/28G01N3/24G01N2203/0025
Inventor 赵延林唐劲舟万文罗世林付成成
Owner HUNAN UNIV OF SCI & TECH
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