Geomechanical model simulating material for simulating rock mass and preparation method thereof

Abstract

The invention discloses a geomechanical model simulating material for simulating a rock mass, which is formed by mixing the following components in parts by mass: 100 parts of barite powder, 0.5 to 7 parts of cement, 0.5 to 1.5 parts of water, 2 to 6 parts of semi-refined paraffin wax, and 2 to 6 parts of No.32 hydraulic engine oil; through testing, a test sample with the volume weight of 28KN / m<3> and size of 10cm*10cm*10cm, which is made of the material, has the deformation modulus of between 29.5 and 109.1MPa and the tensile strength of between 0.33 and 1.21MPa; and through a test sample with the volume weight of 24KN / m<3> and size of 10cm*10cm*5cm, which is made of the material, has the deformation modulus of between 26.4 and 94.7MPa and the tensile strength of between 0.30 and 1.02MPa. The invention also discloses a preparation method of the material. The rock mass simulating material provided by the invention contains the cement, the water, the paraffin wax and the hydraulic engine oil, so that the tensile strength and the deformation modulus of the rock mass simulating material can change in a larger range by regulating the respective mixing amount of the cement, the water, the paraffin wax and the hydraulic engine oil, and the requirement for simulating rock masses with different performances can be fulfilled; and the invention has the advantages of simple preparation process, low energy consumption, high efficiency and low cost.

Description

technical field

[0001] The invention belongs to the technical field of materials for geomechanical model tests and their preparation, and in particular relates to a geomechanical model-like material for simulating rock masses and a preparation method thereof. Background technique

[0002] Due to the development of modern production and construction and science and technology, more and more buildings, such as dams, factory buildings, tunnels, underground power stations, etc., need to be built on rock foundations or rock bodies with complex geological structures. The anti-sliding stability of buildings and the influence of foundation deformation on building structures have become the main contents of the study of geomechanics model tests.

[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...

Examples

Embodiment 1

[0032] First mix 100 parts of barite powder with a particle size of 200 mesh and 4 parts of semi-refined paraffin wax with a melting point of 54°C, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 7 parts of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 1 part of water to the above mixture, and then mix evenly.

[0033] The material has a compressive strength of 1.17MPa and a modulus of deformation of 108.2MPa.

Embodiment 2

[0035]First mix 100 parts of barite powder with a particle size of 200 mesh and 2 parts of semi-refined paraffin wax with a melting point of 54°C, then bake at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 1 part of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 1.5 parts of water to the above mixture, and then mix evenly.

[0036] The material has a compressive strength of 0.33MPa and a modulus of deformation of 29.5MPa.

Embodiment 3

[0038] First mix 100 parts of barite powder with a particle size of 200 mesh and 6 parts of semi-refined paraffin wax with a melting point of 54°C, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 1 part of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 0.5 parts of water to the above mixture, and then mix evenly.

[0039] The material has a compressive strength of 0.79MPa and a modulus of deformation of 52.2MPa.

technical field

[0001] The invention belongs to the technical field of materials for geomechanical model tests and their preparation, and in particular relates to a geomechanical model-like material for simulating rock masses and a preparation method thereof. Background technique

[0002] Due to the development of modern production and construction and science and technology, more and more buildings, such as dams, factory buildings, tunnels, underground power stations, etc., need to be built on rock foundations or rock bodies with complex geological structures. The anti-sliding stability of buildings and the influence of foundation deformation on building structures have become the main contents of the study of geomechanics model tests.

[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...

Examples

Embodiment 1

[0032] First mix 100 parts of barite powder with a particle size of 200 mesh and 4 parts of semi-refined paraffin wax with a melting point of 54°C, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 7 parts of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 1 part of water to the above mixture, and then mix evenly.

[0033] The material has a compressive strength of 1.17MPa and a modulus of deformation of 108.2MPa.

Embodiment 2

[0035]First mix 100 parts of barite powder with a particle size of 200 mesh and 2 parts of semi-refined paraffin wax with a melting point of 54°C, then bake at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 1 part of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 1.5 parts of water to the above mixture, and then mix evenly.

[0036] The material has a compressive strength of 0.33MPa and a modulus of deformation of 29.5MPa.

Embodiment 3

[0038] First mix 100 parts of barite powder with a particle size of 200 mesh and 6 parts of semi-refined paraffin wax with a melting point of 54°C, then dry at 90°C for 3 hours to remove water, take it out and cool to room temperature; add 4 parts of No. 32 hydraulic oil Put it into the dried barite powder and semi-refined paraffin mixture and mix evenly, then crush the mixed material until its particle size is ≤1mm; add 1 part of cement marked 425 to the barite powder, semi-refined paraffin and 32 No. hydraulic oil mixture, continue to mix evenly; finally add 0.5 parts of water to the above mixture, and then mix evenly.

[0039] The material has a compressive strength of 0.79MPa and a modulus of deformation of 52.2MPa.

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