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Soil sampling method and device for undisturbed soil samples with roots

The technology of undisturbed soil sample and soil sampling device is applied in the field of soil mechanics, which can solve the problems of easy agitation of undisturbed soil layer, unfavorable and damage to the physical properties of undisturbed soil, and achieve the effects of reducing disturbance, facilitating sampling, and facilitating demoulding.

Active Publication Date: 2014-11-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY +1
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  • Claims
  • Application Information

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Problems solved by technology

However, taking soil in this way is easy to stir the undisturbed soil layer and destroy the physical characteristics of the undisturbed soil, which is not conducive to the experiment.

Method used

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  • Soil sampling method and device for undisturbed soil samples with roots
  • Soil sampling method and device for undisturbed soil samples with roots
  • Soil sampling method and device for undisturbed soil samples with roots

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

[0029] like Figure 1-Figure 4 As shown, the specific structure of a soil sampling device with roots in the original state of the present invention is as follows: the device includes a plurality of steel tiles combined together to form a container soil sampling cylinder with upper and lower openings sealed all around; The lower part of the tile is provided with a hoop groove 8, which is equipped with a concealed hoop 2; and the concealed hoop 2 is multi-piece, which is fixed in the hoop groove 8) by a screw 6; a cap is arranged above the device 1.

[0030] Preferably, the soil borrowing cylinder form...

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Abstract

The invention discloses a soil sampling method and device for undisturbed soil samples with roots, and belongs to the undisturbed soil sample soil sampling method and the forming device in a geo-technical test. The device comprises a plurality of steel tiles combined together, and the steel tiles combine to form a container soil sampling canister having the periphery sealed and having the upper part and the lower part opening; the lower part of the steel tiles is provided with a hoop groove internally matched with a plurality of dark hoops, and the dark hoops are fixed in the hoop groove through screws; the upper side of the device is provided with a cover cap. When in specific use, the soil sampling device is provided with a large device and a small device which have the same type and respectively are a mother sampler and a sub sampler, wherein the mother sampler is multiple times the diameter of the sub sampler and two times the height of the sub sampler. The invention aims to provide the soil sampling method and device for the undisturbed soil samples with the roots, characteristics of undisturbed soil are integrally kept, undisturbed soil sampling is facilitated, and demolding is facilitated; and moreover, the water content, the density degree and other parameters of the same batch of undisturbed soil samples are kept consistent.

Description

technical field [0001] The invention belongs to the field of soil mechanics, and relates to a method and a device for preparing an undisturbed soil sample in a geotechnical test, in particular to a method and a device for taking soil from an undisturbed soil sample with roots. Background technique [0002] The triaxial shear test is a shear strength test in which the sample gradually increases the axial pressure until the sample is destroyed under a certain fixed surrounding pressure. It is a triaxial shear test designed on the basis of the Moore-Coulomb strength theory. Pressurized shear test. [0003] Triaxial shear test is a relatively complete indoor test method for measuring the shear strength of soil. Usually, 3-4 cylindrical samples are used to measure the shear strength of soil under different surrounding pressures, and then use The Mohr-Coulomb failure criterion determines the shear strength parameters of the soil. [0004] The triaxial shear test can strictly con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
Inventor 肖宏彬龚忠良张党权李珍玉范云蕾贺茜陈能刘星李伟
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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