Grouting model test device and method used under multi-field environment coupling effect
A grouting model and test device technology, applied in the application of stable tension/pressure test material strength, measurement device, suspension and porous material analysis, etc., can solve difficult qualitative evaluation, complex environmental and geological conditions, etc. question
Active Publication Date: 2021-06-18
CHINA RAILWAY TUNNEL GROUP CO LTD +2
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Problems solved by technology
[0003] Due to the complexity of the actual grouting site environment and geological conditions, it is difficult to make a qualitative judgment on the grouting method, grouting material and grouting effect before grouting
Method used
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[0035] The invention discloses a grouting model test device for multi-field environment coupling, such as figure 1 , 2 Shown in and 3, comprising: cylindrical steel cylinder 6, vertically arranged, is used for filling rock or soil mass medium in it; Inside top coaxially is provided with a piston 9, and the outer wall of piston 9 and cylindrical steel cylinder 6 The inner wall of the piston 9 is tightly fitted, and when the piston 9 moves downward, it is used to extrude rock or soil. At least one through hole is opened axially on the piston, and a discharge outlet flowmeter 8 is arranged outside the through hole; the through hole is used as a circulation channel for the water in the cylindrical steel cylinder 6 to flow out, and the discharge outlet flowmeter 8 is used to measure the rock or soil. The amount of water that flows out after the body is squeezed. There are two seal ring grooves on the piston 9 at intervals around its circumference for placing an "O" seal ring 10 ....
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The invention discloses a grouting model test device used under a multi-field environment coupling effect. The device comprises a cylindrical steel cylinder which is vertically arranged and is used for filling rock or soil; a piston is coaxially arranged on the upper portion in the cylindrical steel cylinder, the outer wall of the piston is tightly attached to the inner wall of the cylindrical steel cylinder, and when the piston moves downwards, the piston is used for squeezing rock or soil; a constant-temperature water storage tank is used for conveying constant-temperature water into the cylindrical steel cylinder to fill pore cracks of the rock or the soil body; a force supply device is used for providing power for downwards moving the piston to extrude the rock or the soil body; and a slurry supply system is used for conveying slurry into the cylindrical steel cylinder so as to displace the residual water in the extruded rock or soil body pore fractures. By using the grouting model test device under the multi-field environment coupling effect, the grouting conditions of broken rocks and sandy soil under different water temperatures and grouting parameters can be simulated, and then the slurry diffusion mechanism and the grouting reinforcement mechanism and effect are analyzed.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a grouting model test device and method for multi-field environment coupling Background technique [0002] Grouting is to displace the inherent air and water in the surrounding rock holes and fissures with grout, and then rebond the fractured rock and soil mass to enhance the strength, impermeability and heat insulation performance of the rock and soil mass. Before grouting, it is necessary to make a prediction on the nature of the grouting object, what kind of grouting material to choose, what kind of grouting method to use, and what kind of grouting effect will be achieved after grouting, so as to increase the controllability of the grouting process and reliability. [0003] Due to the complexity of the actual grouting site environment and geological conditions, it is difficult to make a qualitative judgment on the grouting method, grouting materia...
Claims
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Login to View More IPC IPC(8): G01N3/12G01N15/08G01N25/20
CPCG01N3/12G01N15/0826G01N15/088G01N25/20G01N2203/0019G01N2203/0048
Inventor 高广义余永强黎建军范利丹张纪云翟康博徐海廷刘永胜王卓龚健孙亮王树仁张文新李广跃赵爽皮乾勇
Owner CHINA RAILWAY TUNNEL GROUP CO LTD