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Three-dimensional grouting model test device and method

A technology of grouting model and test device, applied in the direction of material inspection products, etc., can solve problems such as not being able to guide the rational design of grouting engineering, affecting research progress, scientific understanding of difficult grouting process, etc., to achieve long-term stability. performance, advanced technical parameters, and the effect of enhancing scientific value

Active Publication Date: 2015-07-08
滕州市产品质量监督检验所
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Problems solved by technology

However, there are currently few model test benches for tunnel excavation and grouting, which seriously affects the progress of related research.
[0003] Existing grouting model tests are mostly carried out on specific strata (such as single fractures, simple porous media), or use similar rock mass simple filling to replace the injected rock mass; the tests rarely involve the stress environment and groundwater environment. The influence of grouting diffusion law and reinforcement mechanism, not to mention the three-dimensional in-situ stress field and complex hydrogeological conditions of the injected rock mass
Similar situations seriously deviate from the state of the injected rock mass, and it is difficult to obtain a scientific understanding of the grouting process, nor can it guide the rational design of the grouting project

Method used

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] Such as figure 1 , figure 2 As shown, the first reaction force plate 1-1 is processed into a Φ660*25mm (diameter 660mm, height 25mm) disc made of high-strength alloy steel. Drill a Φ20mm grouting hole 1-2 at the center of the first reaction plate, cement the mining quick joint I 1-3, and connect the grouting equipment 6-1; drill 4 symmetrically distributed holes on the first reaction plate Φ590mm circle Φ20mm fixing hole I 1-4, so that the fastening screw I4-1 passes through; the lower surface of the first reaction force plate is processed with a Φ500*470*5mm annular groove I 1-5, and the built-in rubber gasket rubber gasket I 1- 6.

[0044] Such as figure 1 , image 3 As shown, the second reaction force plate 2-1 is processed into a Φ780*25mm disc made of high-strength alloy steel, and a Φ90*30mm cylindrical spacer 2-2 is welded on the low...

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Abstract

The invention discloses a three-dimensional grouting model test device and method. The three-dimensional grouting model test device comprises a first counter-force plate, a second counter-force plate and a third counter-force plate which are sequentially connected in the vertical direction, wherein a confining-pressure counter-force cavity is placed between the first counter-force plate and the second counter-force plate; an axial loading module is placed between the second counter-force plate and the third counter-force plate; a grouted rock mass loading module and a confining-pressure servo loading module are arranged in the confining-pressure counter-force cavity; a sensor connected with a data processing module is arranged in the grouted rock mass loading module. According to the invention, stable loading of the three-dimensional ground stress condition and the groundwater environment in an indoor grouting test is realized, the consistency between the testing conditions and the grouted rock mass initial conditions is effectively guaranteed, and a powerful support is provided for researching the grouting theory.

Description

technical field [0001] The invention relates to a three-dimensional grouting model test device and a test method capable of applying three-dimensional stress. Background technique [0002] In the construction of underground projects such as mines and tunnels, problems such as large deformation of surrounding rocks and large amounts of water inflow often occur, and even water and mud inrush disasters may occur, causing huge loss of personnel and property. Grouting, as an effective means of strengthening weak surrounding rock and controlling water damage, has been more and more widely used in underground engineering disaster control. Model test is an important means to study the law of grout diffusion and reinforcement mechanism in the process of grouting treatment. However, there are currently few model test benches for tunnel excavation and grouting, which seriously affects the progress of related research. [0003] Existing grouting model tests are mostly carried out on s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/38
Inventor 张伟杰魏久传谢道雷尹会永
Owner 滕州市产品质量监督检验所
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