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Geomechanical model similar material for simulating cover layer and preparation method thereof

A technology of geomechanics and similar materials, applied in the field of geomechanical model test of similar materials and their preparation, can solve problems such as inability to simulate similar, small deformation modulus, etc., achieve simple preparation process, good plasticity and cohesion, and a wide range of sources Effect

Inactive Publication Date: 2014-10-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With such a small deformation modulus, it is impossible to perform similar simulations with the above-mentioned similar rock mass materials, and in the existing relevant literature, there is no material report for similar simulations of deep overburden materials.

Method used

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  • Geomechanical model similar material for simulating cover layer and preparation method thereof
  • Geomechanical model similar material for simulating cover layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]First mix 100 parts of barite powder with a particle size of 200 mesh and 4 parts of semi-refined paraffin wax at 54 degrees, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 5 parts of No. 32 hydraulic oil to the drying Mix well with the barite powder and semi-refined paraffin, and then crush the mixed material until its particle size is <1mm; add 5 parts of bentonite to the mixture of barite powder, paraffin and engine oil and mix evenly, then add 10 parts Ordinary quartz sand is added to the mixture and mixed evenly.

[0034] The deformation modulus of the material is 0.29MPa, and the compressive strength is 4.6KPa.

Embodiment 2

[0036] First mix 100 parts of barite powder with a particle size of 200 mesh and 5 parts of semi-refined paraffin wax at 54 degrees, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 5 parts of No. 32 hydraulic oil to the drying Mix well with the barite powder and semi-refined paraffin wax, and then crush the mixed material until the particle size is <1mm; add 15 parts of bentonite to the mixture of barite powder, paraffin and engine oil and mix evenly, then add 12 parts Ordinary quartz sand is added to the mixture and mixed evenly.

[0037] The deformation modulus of the material is 0.18MPa, and the compressive strength is 2.9KPa.

Embodiment 3

[0039] First mix 100 parts of barite powder with a particle size of 200 mesh and 4 parts of semi-refined paraffin wax at 54 degrees, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 7.5 parts of No. 32 hydraulic oil to the drying Mix well with the barite powder and semi-refined paraffin, and then crush the mixed material until its particle size is <1mm; add 5 parts of bentonite to the mixture of barite powder, paraffin and engine oil and mix evenly, then add 10 parts Ordinary quartz sand is added to the mixture and mixed evenly.

[0040] The deformation modulus of the material is 0.25MPa, and the compressive strength is 4.0KPa.

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Abstract

The invention discloses a geomechanical model test similar material for simulating a cover layer, which is formed by mixing the following components in parts by mass: 100 parts of barite powder, 4-6 parts of semi-refined paraffin wax, 5-10 parts of 32# hydraulic machine oil, 5-20 parts of bentonite and 8-12 parts of quartz sand. After the material is prepared into a sample of which the volume weight is 16-22 KN / m<3> and the size is 10cm*10cm*10cm, the deformation modulus is 0.11-1.19 MPa, and the compression strength is 1.8-18.4 KPa. The invention also discloses a preparation method of the material. The compression strength and deformation modulus of the cover layer simulating material are lower, and the volume weight, compression strength and deformation modulus of the obtained material can change within a wide range by adjusting the amounts of the substances; and thus, the material can be used as an ideal geomechanical model similar material for simulating a cover layer. The geomechanical model test similar material fills up the blank in the prior art; the raw materials have wide sources and have no toxic or side effect; and the method has the advantages of simple preparation process, low energy consumption, high preparation efficiency and low cost.

Description

technical field [0001] The invention belongs to the technical field of similar materials for geomechanical model tests and their preparation, and in particular relates to a similar material for geomechanical model tests for simulating covering layers and a preparation method thereof. Background technique [0002] Due to the development of production construction and science and technology in modern times, more and more buildings need to be built on the foundation with complex geological structure. The main content of the experimental research. [0003] The geomechanics model test is a method of scaled-down research on specific engineering geological problems based on a certain similarity principle. The main purpose of the test is to study the ultimate bearing capacity, failure form, failure mechanism and Deformation distribution properties. The research content of the geomechanics model test is not limited to a certain state under the known load, but more importantly, it s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13G01N1/28
Inventor 张林董建华陈媛陈建叶胡成秋杨宝全段斌杨田夏婵婷熊瑜聂宏博
Owner SICHUAN UNIV
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