Similar material for simulating rock mass and preparation method thereof

A technology for similar materials and simulating rock mass, which is applied in the field of similar materials and their preparation in geomechanical models, and can solve the problems of inability to prepare similar materials and inability to meet simulation requirements.

Inactive Publication Date: 2018-05-25
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in geomechanical model tests, according to the similarity ratio requirements of different rock masses, it is often necessary to prepare simulated materials with an elastic modulus below 80Mpa. Therefore, this technical solution cannot meet the needs of simulating rock masses with different properties, especially cannot prepare Similar materials with elastic modulus below 80Mpa

Method used

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  • Similar material for simulating rock mass and preparation method thereof
  • Similar material for simulating rock mass and preparation method thereof
  • Similar material for simulating rock mass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Add 3,8-dibromophenanthrene (0.01 mol) into a 250 mL three-necked flask, and add DMSO to dissolve the solid under a nitrogen atmosphere. A hydrochloride solution dissolved with 0.01 mol of 3-dimethylaminopropyl chloride was added dropwise to the mixture, and stirred at room temperature for 6 hours to stop the reaction. Water was added to the reaction to dissolve any salts. After extraction, the combined organic layers were washed with NaOH solution, water and concentrated brine. The washed solution was dried with anhydrous MgSO4, filtered under reduced pressure, and the solvent was removed by rotary evaporation to obtain a yellow solid crude product, which was recrystallized in methanol / water to obtain white crystals.

[0037] 2) Add 0.02 mol of N-bromosuccinimide (NBS) and 0.001 g of benzoyl peroxide to a 100 mL three-necked flask, and add 1,4-dimethylbiphenyl (0.01 mol) in a nitrogen atmosphere and CCl4. Stir magnetically to dissolve all solids. Heat to reflux ...

Embodiment 2

[0042] First mix 100 parts of barite powder with a particle size of 300 mesh and 0.014 parts of formula I polymer, 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 to the dried Mix the barite powder and the polymer of formula I evenly, and then pulverize the mixed material until its particle size is ≤1mm; add 0.17 part of cement marked as 525 to the barite powder, the polymer of formula I and No. 32 hydraulic machine oil In the mixture, continue to mix evenly; finally add 2 parts of water to the above mixture, and mix evenly. The compressive strength of the material is 31.6MPa, the tensile strength is 2.91MPa, and the deformation modulus is 132.6MPa.

Embodiment 3

[0044] First mix 100 parts of barite powder with a particle size of 300 mesh and 0.012 parts of formula I polymer, 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 to the dried Mix the barite powder and the polymer mixture of formula I evenly, and then crush the mixed material until its particle size is ≤1mm; add 0.1 part of cement marked 425 to the barite powder, the polymer formula I and No. 32 hydraulic press In the oil mixture, continue to mix well; finally add 2.5 parts of water to the above mixture, and mix well. The compressive strength of the material is 22.6MPa, the tensile strength is 3.12MPa, and the deformation modulus is 32.8MPa.

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Abstract

The invention relates to a rock mass simulating material and a preparation method thereof. The rock mass simulating material is prepared from barite powder, cement, water, 32# hydraulic machine oil and polymer with a special formula I. The similar material has sensibility, can directly obtain deformation information of a model test, does not need an additional test apparatus, is greatly convenientfor test work in the test, can be used for simulating the rock mass similar material, is easy to process, does not need to maintain, can realize repeated utilization, and greatly reduce test cost.

Description

technical field [0001] The invention relates to a similar material and a preparation method thereof, in particular to a geomechanical model similar material suitable for simulating rock masses and a preparation method thereof. Background technique [0002] The similar simulation test is a test method that uses a model instead of a prototype to conduct test research according to a certain geometric and physical relationship, and uses the research results for the prototype. It is an important scientific research method. It is to make a model similar to the prototype in the laboratory according to the similarity principle, observe the internal force parameters and their distribution laws of the model with the help of test instruments, and use the results of the research on the model to infer the possibility of the prototype. The mechanical phenomena that occur and the law of rock mass pressure distribution can solve practical problems in rock mass engineering production. This ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/54
CPCC04B28/04C04B2111/00991C04B2111/542C04B2201/50C04B14/368C04B24/2652C04B24/00
Inventor 宋志飞赵泽印柴佳美孙世国冯少杰
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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