Permeation type grouting solidified soil direct shear test sample preparation device and use method thereof
A technology for solidifying soil and soil samples, which is used in measuring devices, preparation and sampling of samples for testing, etc., can solve the problem that the samples of grouting solidified soil cannot be directly prepared, and the seepage characteristics of grouting slurry cannot be well reflected. Inhomogeneity, etc.
Pending Publication Date: 2018-09-04
ZHENGZHOU UNIV
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Problems solved by technology
The current method of preparing direct shear samples in the laboratory only prepares a single rock-soil sample, which cannot better reflect the seepage characteristics of the grouting slurry in the rock-soil mass and the inhomogeneity of the solidified soil, and cannot directly prepare the grouted solidified soil. sample
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] The direct shear test sample preparation device of the infiltration type grouting solidified soil of the present invention, as figure 1 As shown, it includes a permeable stone 8, an upper ring knife 2 and a lower ring knife 1 arranged up and down sequentially on the permeable stone 8, and the blade portion of the upper ring knife 2 and the blade portion of the lower ring knife 1 are arranged in relative contact to form an up and down stack. Put the double ring knife sampler. The part where the edge of the upper ring knife 2 and the edge of the lower ring knife 1 are in contact forms an annular groove on the outer surface of the double-ring knife sample preparation device, and the annular groove is provided with a seal for connecting the lower ring knife and the upper ring knife and a seal. Sealing wax 3 at the contact position between the edge o...
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Abstract
The invention discloses a permeation type grouting solidified soil direct shear test sample preparation device and a use method thereof and belongs to the field of soil tests of the civil engineering.The direct shear test sampling device comprises porous stone, a lower cutting ring, an upper cutting ring, a compacting device as well as top gauze, wherein parts that the blade part of the upper cutting ring contacts the blade part of the lower cutting ring form an annular groove in the outer side surface of a double-cutting ring sample preparation device; the annular groove is filled with sealing wax and a waterproof adhesive tape; the compacting part is provided with an impact part; bottom gauze is arranged between the lower cutting ring and the porous stone; the top gauze is laid on a compacted soil sample. By adopting a sampling method disclosed by the invention, not only are initial conditions such as compactness of a soil sample before grouting, controlled, but also actual workingcondition characteristics of grouting permeation soil samples can be reflected, and different permeation type grouting working conditions can be simulated. The sampling device and method are simple tooperate, and test samples which meet specifications and actual engineering situations can be provided for direct shear tests on permeation type grouting solidified soil.
Description
technical field [0001] The invention relates to the field of civil engineering geotechnical tests, in particular to a direct shear test sample preparation device and a sample preparation method for infiltration grouting solidified soil. Background technique [0002] The grouting method is to inject grout into the rock and soil mass, and the grout can bond and reinforce the loose and broken rock and soil mass by means of filling, infiltration and compaction, so that the strength, integrity and integrity of the rock and soil mass can be improved. The anti-permeability is greatly improved, and it has a wide range of applications in foundation treatment, slope protection and other fields. The shear strength of grouting solidified soil is not only one of the important mechanical properties to evaluate the effect of grouting method, but also an important calculation parameter in the design of grouting reinforcement engineering; Stability is controlled by its shear strength. Shea...
Claims
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Login to View More IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 张浩严格李永辉宋卫康王琨戈白振超李霖李忠恕
Owner ZHENGZHOU UNIV