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Similar material for fault mud burst model test and preparing method thereof

A similar material and model test technology, applied in the field of material science, can solve problems such as the inability to reflect the catastrophic development process of fault media, and achieve the effect of improving the similarity simulation degree and accurate research results

Active Publication Date: 2015-09-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, common geomechanical model tests seldom perform similar simulations on fault mud outbursts. The main reason is that similar materials in fault media need to gradually increase in permeability and slowly disintegrate under hydraulic action, and it is difficult to satisfy both mechanical parameters and Due to the similarity of hydraulic parameters, previous studies often rarely involve similar simulations of fault mud outbursts, so they cannot reflect the catastrophic development process of fault media under the action of confined water

Method used

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  • Similar material for fault mud burst model test and preparing method thereof
  • Similar material for fault mud burst model test and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of similar materials for fault mud outburst model tests

[0030] The raw materials are as follows: 1 part of talcum powder, 4.5 parts of sand, 1.28 parts of gypsum, 0.45 parts of bentonite, 0.18 parts of liquid paraffin, and 0.59 parts of mixing water.

[0031] The preparation method comprises the following steps:

[0032] 1) Take talcum powder, sand, gypsum, bentonite and liquid paraffin in strict proportion;

[0033] 2) Mix the four aggregate materials of talcum powder, sand, gypsum and bentonite and mix them evenly in a mixer;

[0034] 3) Add mixing water and stir fully;

[0035] 4) add regulator paraffin oil, stir;

[0036] 5) Put the mixed material into the forming mold and tamp it into shape;

[0037] 6) Put the formed material in a ventilated and dry place for 25 hours to obtain a similar material for fault mud outburst model test.

[0038] Related parameters of this ratio: Density 1.98g / cm 3 , compressive strength 0.41MPa, elastic mod...

Embodiment 2

[0039] Example 2 Preparation of similar materials for fault mud outburst model tests

[0040] The raw materials are as follows: 1 part of talcum powder, 2.5 parts of sand, 1.4 parts of gypsum, 0.35 part of bentonite, 0.02 part of liquid paraffin, and 0.59 part of mixing water.

[0041] The preparation method comprises the following steps:

[0042] 1) Take talcum powder, sand, gypsum, bentonite and liquid paraffin in strict proportion;

[0043] 2) Mix the four aggregate materials of talcum powder, sand, gypsum and bentonite and mix them evenly in a mixer;

[0044] 3) Add mixing water and stir fully;

[0045] 4) add regulator paraffin oil, stir;

[0046] 5) Put the mixed material into the forming mold and tamp it into shape;

[0047] 6) Put the molded material in a ventilated and dry place for 30 hours to obtain a similar material for the fault mud outburst model test.

[0048] Relevant parameters of this ratio: Density 1.85g / cm 3 , compressive strength 0.35MPa, elastic mo...

Embodiment 3

[0049] Example 3 Preparation of similar materials for fault mud outburst model tests

[0050] The raw materials are as follows: 1 part of talcum powder, 5.5 parts of sand, 0.9 part of gypsum, 0.55 part of bentonite, 0.26 part of liquid paraffin, and 0.49 part of mixing water.

[0051] The preparation method comprises the following steps:

[0052] 1) Take talcum powder, sand, gypsum, bentonite and liquid paraffin in strict proportion;

[0053] 2) Mix the four aggregate materials of talcum powder, sand, gypsum and bentonite and mix them evenly in a mixer;

[0054] 3) Add mixing water and stir fully;

[0055] 4) add regulator paraffin oil, stir;

[0056] 5) Put the mixed material into the forming mold and tamp it into shape;

[0057] 6) Put the formed material in a ventilated and dry place for 34 hours to obtain a similar material for fault mud outburst model test.

[0058] Related parameters of this ratio: Density 2.15g / cm 3 , compressive strength 0.55MPa, elastic modulus ...

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Abstract

The invention relates to a similar material for a fault mud burst model test and a preparing method thereof; the similar material comprises the components by weight: 1 part of a talcum powder, 2-7 parts of sand, 0.8-1.6 parts of gypsum, 0.2-0.6 part of bentonite, 0.01-0.4 part of liquid paraffin, and 0.2-0.7 part of mixing water. The preparing method comprises the steps: according to the proportion, weighing the talcum powder, sand, gypsum, bentonite and liquid paraffin; mixing evenly the talcum powder, sand, gypsum and bentonite in a stirrer; adding the mixing water, and fully stirring; adding the liquid paraffin and stirring; putting the mixed material into a molding die, and carrying out compaction molding; placing the molded material in a ventilated dry place for 24-36 h, and thus obtaining the similar material for the fault mud burst model test. The similar material can be slowly weakened and disintegrated under a water action, the disintegration performance can be changed through changing the composition, and a possibility is provided for fault mud burst in a process of real simulation of tunnel excavation.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a similar material used for fault mud outburst model tests and a preparation method thereof. Background technique [0002] At present, common geomechanical model tests seldom perform similar simulations on fault mud outbursts. The main reason is that similar materials in fault media need to gradually increase in permeability and slowly disintegrate under hydraulic action, and it is difficult to satisfy both mechanical parameters and Due to the similarity of hydraulic parameters, the similar simulation of mud outbursts on faults was rarely involved in previous studies, which could not reflect the catastrophic development process of fault media under the action of confined water. Contents of the invention [0003] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, provide a kind of similar material that is used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14B28B1/04
Inventor 李术才王凯张庆松张霄刘聪王德明谭英华刘建国
Owner SHANDONG UNIV
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