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Preparation method of undisturbed sample for laboratory test of mechanical properties of reinforced plant soil

An indoor test and soil mechanics technology, applied in the field of mechanical property testing of reinforced plant soil, can solve the problems that ring knife sampling cannot be carried out directly, cannot measure soil physical and mechanical parameters, etc., and achieves strong repeatability, controllable quality, Simple to use effects

Active Publication Date: 2016-08-31
HOHAI UNIV
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  • Application Information

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Problems solved by technology

The existence of the root system, especially the barrier of the surface reinforcement material, made it impossible to directly sample the ring knife during the test, and it was impossible to measure the physical and mechanical parameters of the soil

Method used

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  • Preparation method of undisturbed sample for laboratory test of mechanical properties of reinforced plant soil
  • Preparation method of undisturbed sample for laboratory test of mechanical properties of reinforced plant soil

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0030] A method for preparing the original sample for indoor test of soil mechanical properties of reinforced plants, comprising the following steps:

[0031] S1. Prepare a container 1 for cultivating reinforced plant soil, and cut out a matching geotextile 3 according to the size of the container 1 .

[0032] Container 1 is made of light weight and chemically stable synthetic resin or plastic plate of other high molecular compounds. The shape can be cuboid, cylinder, etc. The vertical height is not less than 200mm. 3mm, the number of permeable holes per square meter is not less than 15, which can be used for smooth drainage during subsequent watering and maintenance or during the rainy season....

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Abstract

The invention discloses a preparation method of an undisturbed sample for a laboratory test of mechanical properties of reinforced plant soil. The problem that a common cutting ring can not directly carry out sampling is solved, enhancement of reinforced plant soil on shear strength of in-situ soil body can be better restored in a test, sowing and growth of plants are not hindered, interaction between a plant root system and a soil engineering pad is also not influenced, original-state characteristics of the reinforced plant soil are reserved, and the problem that physical and mechanics parameters of a soil body of the reinforced plant soil can not be directly measured; meanwhile, the preparation method also has the advantages of simplicity in operation, controllable quality, strong repeatability and the like, and relatively accurate quantification on the shear strength of the reinforced plant soil is comprehensively realized.

Description

technical field [0001] The invention relates to a preparation method of an undisturbed sample for an indoor test of soil mechanical properties of reinforced plants, belonging to the field of testing mechanical properties of reinforced plant soils. Background technique [0002] In the construction of railways, highways, hydropower, waterways, ports, etc., it is often necessary to excavate a large number of slopes. How to maintain the stability of the slopes, prevent the occurrence of water and soil erosion, and maintain the balance of the ecological system has become a key concern in the project. object. [0003] The strengthening effect of plant roots on soil strength includes anchoring and shallow reinforcement. Therefore, when studying the physical and mechanical properties of plant soil, it can be studied according to the strength theory of reinforced soil combined with shear tests. The so-called reinforced soil is a composite formed by burying materials with higher tens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 谭慧明李相志陈佳牛文丽
Owner HOHAI UNIV
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