Post-peak fractured rock triaxial slurry permeability test system and method

A test system and permeability technology, applied in the field of geotechnical engineering, can solve problems such as easy blockage, difficult flow of grout, uneven pressure of grout, etc.

Inactive Publication Date: 2020-03-17
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because there are obvious differences in the flow characteristics and permeability of the two fluids, and in the existing rock permeability test system of grouting grout (cement grout), it often occurs that the grout is not easy to flow, easy t...

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  • Post-peak fractured rock triaxial slurry permeability test system and method
  • Post-peak fractured rock triaxial slurry permeability test system and method
  • Post-peak fractured rock triaxial slurry permeability test system and method

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Embodiment Construction

[0097] Such as figure 1 As shown, the post-peak fractured rock triaxial grout permeability test system of the present invention includes a penetration system, an axial loading system, a hoop loading system, a grouting pressure system and a data acquisition and analysis system;

[0098] The permeation system includes a base 1, the upper part of the base 1 is connected with a cylinder 2, the top of the cylinder 2 is provided with a cover 3, and the center of the cover 3 is provided with a first circular hole 4, so The cylinder 2 is provided with a first permeable plate 5 and a second permeable plate 6 for clamping the rock sample 36. The first permeable plate 5 and the second permeable plate 6 have the same structure and both include permeable The slurry orifice 7 and the slurry penetration plate joint 8 connected with the slurry penetration orifice 7, the shape of the slurry penetration plate joint 8 is circular and a through hole 9 is provided at the central axis, and the top ...

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Abstract

The invention discloses a post-peak fractured rock triaxial slurry permeability test system and method. The system comprises a permeation system, an axial loading system, a circumferential loading system, a grouting pressure system and a data acquisition and analysis system. The method comprises the following steps: 1, debugging the test system and checking the running condition of the test system; 2, mounting a rock sample; 3, starting and setting the axial loading system; 4, starting and setting the circumferential loading system; 5, fracturing the rock sample to a post-peak fractured state;6, carrying out a grouting permeability test on the rock sample in the post-peak fractured state; 7, ending the test; 8, processing the test data. The permeability change characteristics of the slurry in the rock post-peak fracture process can be effectively determined; and the problems of unsmooth permeation of slurry in the fractured rock sample, easy blockage of the pipeline, non-uniform pressure action of the slurry, difficulty in confining pressure control, difficulty in sealing implementation and the like in triaxial slurry permeability test of different post-peak fractured state rockscan be greatly solved.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a triaxial slurry permeability testing system and method for post-peak fractured rocks. Background technique [0002] Many geotechnical engineering, especially in deep underground geotechnical engineering (such as roadway excavation in deep mining engineering, road tunnel excavation, etc.), the rock mass ruptures very seriously under the excavation deflection of high ground stress, and appropriate measures must be taken. Reinforcement technology keeps the rock mass stable, thereby ensuring the safe and efficient exploitation of resources. A large number of engineering practices have shown that grouting reinforcement technology is an effective method to control (ensure stability) cracked rock and soil mass. However, because the grouting reinforcement effect is related to the penetration and diffusion range of the grouting slurry in the fractured rock ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826
Inventor 黄耀光赵爱宁杨晚霞张天军
Owner XIAN UNIV OF SCI & TECH
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