Apparatus and method for simulating and visualizing fracture seepage by using magnetic fluid

A magnetic fluid and fissure technology, applied in the field of rock fissure test, can solve the problems of lack of test equipment and methods, and achieve clear and reliable pictures

Active Publication Date: 2022-04-08
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a device and method for simulating and visualizing fissure seepage using magnetic fluid, which can solve the problem of lack of relevant test equipment and methods, and use magnetic fluid to simulate space under the conditions of multiple angles of different confining pressure and lateral force Fissure seepage situation, study seepage law in various situations

Method used

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  • Apparatus and method for simulating and visualizing fracture seepage by using magnetic fluid
  • Apparatus and method for simulating and visualizing fracture seepage by using magnetic fluid
  • Apparatus and method for simulating and visualizing fracture seepage by using magnetic fluid

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Embodiment 1

[0030] like Figure 1-Figure 4 As shown in the figure, a device for visualizing seepage flow in cracks by using magnetic fluid simulation includes a main frame 1, a retractable support rod is arranged on the main frame 1, and a movable sub-frame 10 is slidably connected to the top surface of the main frame 1, and is installed on the main frame 1 The camera 7 inside is connected with the movable sub-frame 10 through the top universal spherical hinge 11 on the main frame 1, and the shear reaction force frame 9 is installed on the bottom plate 1-1 of the main frame 1 through the universal spherical hinge reaction force device 2 On the surface, the visualized rock sample 26 is placed on the upper surface of the shearing reaction force frame 9 through the inflated and pressurized air cushion 22, and the inflated and pressurized air cushion 22 is communicated with the inflatable device 24. Composition, a crack is formed between the transparent resin 23 of the upper cover plate and t...

Embodiment 2

[0037] A method for simulating and visualizing seepage flow through the above-mentioned device, the method comprises the following steps:

[0038] Step 1: Adjust the angle of the top universal spherical hinge 11 so that the camera 7 is perpendicular to the top surface of the visualized rock sample 26;

[0039] Step 2: Adjust the height of the retractable support rod, and place the camera 7 in a suitable position (can clearly capture and visualize the seepage situation without reflection, ghosting, etc., which affect the later experimental data processing);

[0040]Step 3: Inject gas into the expanded pressurized air cushion 22 through the inflation device 24 (use the pressure gauge on the high-pressure nitrogen cylinder to adjust the pressure), and adjust the normal stress on the visualized rock sample 26;

[0041] Step 4: Turn on the shear loading device 18, and control the magnitude of the shear force by adjusting the thrust of the hydraulic rod. The magnitude of the shear f...

Embodiment 3

[0045] In the above-mentioned embodiment 1, the preparation method of the visualized rock sample 26 is as follows:

[0046] Step a: Prepare rock crack surface: collect rocks with natural joint cracks (including opposite surfaces) or split a block of rock to obtain a split surface, the size of which depends on the test requirements;

[0047] Step b: Prepare the test silica gel according to the mass ratio of hardener and liquid silica gel at 1:50, pour the liquid silica gel evenly on the cracked surface of the rock sample to be simulated, wait for it to solidify and harden after 3 hours, and take it out. Down;

[0048] Step c: prepare transparent resin: get a certain amount of liquid resin in a suitable container, first add a promoter with a mass content of 0.6%-0.8% and stir for 2 minutes, and then add a mass content of 0.6%-0.8% Hardener, stir for 2 minutes, and finally add a defoamer with a mass content of 0.6%-1.2%, stir slowly for 2 minutes, and the whole process should be...

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Abstract

A device for simulating and visualizing fracture seepage using magnetic fluid, including a main frame, a camera installed in the main frame is connected with a movable sub-frame through a top universal ball joint on the main frame, and the visualized rock sample is placed on the Shearing the upper surface of the reaction frame, the visualized rock sample is composed of the transparent resin on the upper cover plate and the ordinary rock sample. The inner wall of the shear reaction frame is connected, the hydraulic rod loading device is equipped with a stress sensor and a displacement sensor, and the grouting / water pipe of the grouting / watering device is matched with the crack between the transparent resin of the upper cover and the common rock sample. The device and method for simulating and visualizing fissure seepage using magnetic fluid provided by the present invention utilizes magnetic fluid to simulate the seepage of fissures under conditions of different confining pressures and lateral forces at multiple angles in space, and studies seepage laws in various situations.

Description

technical field [0001] The invention relates to the technical field of rock fissure testing, in particular to a device and method for visualizing fissure seepage by using magnetic fluid simulation. Background technique [0002] In recent years, with the continuous development of domestic basic projects, the construction scale of various tunnel (hole) projects has also continued to expand. my country has become the country with the largest project construction scale and the most stringent quality requirements in the world. In geotechnical engineering such as mining, water conservancy and hydropower, tunnels, and slope reinforcement, joint fissures have an important impact on the stability of rock mass engineering. On the one hand, cracks in rock mass are one of the important causes of water damage in underground engineering, and on the other hand, the existence of cracks also greatly reduces the strength of rock mass. Filling the fissures by grouting can not only effectively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/082G01N15/08G01N2015/0846
Inventor 刘杰黎照张子睿王舒羽高素芳孙涛唐洪宇石谦李政蔡显灿沈豪炜李远航何卓文吴子进巫江洪赵敏吴浩
Owner 合肥九州龙腾科技成果转化有限公司
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