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A kind of physical similarity simulation experiment material and preparation method thereof

A technology for physically similar simulation and experimental materials, applied in the field of physically similar simulation experimental materials and their preparation, can solve problems such as difficult to simulate weak rock formations, difficult natural collapse of overlying rock formations, and high strength of similar materials, achieving short maintenance time, The effect of low cost and wide source

Active Publication Date: 2021-12-21
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the similar materials in the laboratory are composed of cement, gypsum, and large white powder. The strength of similar materials is high, and it is difficult to simulate weak rock formations. In the test, it is difficult for the overlying strata to collapse naturally when simulating coal seam mining. Therefore, a Ability to simulate similar materials in weak rock formations

Method used

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  • A kind of physical similarity simulation experiment material and preparation method thereof
  • A kind of physical similarity simulation experiment material and preparation method thereof
  • A kind of physical similarity simulation experiment material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation process of the test piece is as follows:

[0025] Step 1. Use different types of stainless steel sieves to sieve river sand according to the required particle size; in this embodiment, use stainless steel sieves to sieve river sand with a particle size of ≤0.4 mm and uniform gradation.

[0026] Step 2. Using an electronic scale, weigh river sand, cement, water glass and starch according to the weight ratio; in the present embodiment, weigh: 100 parts of river sand with a particle size≤0.4mm, 6 parts of cement, and water glass 2 parts, 2 parts starch. That is, take 100g of river sand with a particle size of ≤0.4mm, 6g of cement, 2g of water glass, and 2g of starch.

[0027] Step 3, placing the river sand, cement and starch weighed in step 2 in a container or a blender to mix and stir evenly;

[0028] Step 4. Add water glass and an appropriate amount of water to the uniformly stirred material in step 3 according to the proportion by weight, and then full...

Embodiment 2

[0033] The preparation process of the test piece is as follows:

[0034] Step 1. Use different types of stainless steel sieves to sieve river sand according to the required particle size; in this embodiment, use stainless steel sieves to sieve river sand with a particle size of ≤0.4 mm and uniform gradation.

[0035] Step 2. Using an electronic scale, weigh the river sand, cement, water glass and starch respectively according to the weight ratio; in this embodiment, weigh: 100 parts of river sand with a particle size≤0.4mm, 8 parts of cement, and water glass 4 parts, 4 parts starch. That is, take 100g of river sand with a particle size of ≤0.4mm, 8g of cement, 4g of water glass, and 4g of starch.

[0036] Step 3, placing the river sand, cement and starch weighed in step 2 in a container or a blender to mix and stir evenly;

[0037] Step 4. Add water glass and an appropriate amount of water to the uniformly stirred material in step 3 according to the proportion by weight, and...

Embodiment 3

[0042] The preparation process of the test piece is as follows:

[0043] Step 1. Use different types of stainless steel sieves to sieve river sand according to the required particle size; in this embodiment, use stainless steel sieves to sieve river sand with a particle size of ≤0.4 mm and uniform gradation.

[0044] Step 2. Use an electronic scale to weigh river sand, cement, water glass and starch according to the weight ratio; in this embodiment, weigh: 100 parts of river sand with a particle size≤0.4mm, 10 parts of cement, and water glass 6 parts, 6 parts of starch. That is, take 100g of river sand with a particle size of ≤0.4mm, 10g of cement, 6g of water glass, and 6g of starch.

[0045] Step 3, placing the river sand, cement and starch weighed in step 2 in a container or a blender to mix and stir evenly;

[0046] Step 4. Add water glass and an appropriate amount of water to the uniformly stirred material in step 3 according to the proportion by weight, and then fully ...

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Abstract

The invention discloses a physical similarity simulation experiment material. The physical similarity simulation experiment material is mainly prepared from the following raw materials in parts by weight: 100 parts of river sand, 6-10 parts of cement, 2-6 parts of water glass and 2-6 parts of starch 6 servings. The invention also discloses a preparation method of a physically similar simulation experiment material. The similar material of the invention has the characteristics of controllable physical and mechanical properties, can simulate the natural collapse of the overlying strata during coal seam mining, high simulation similarity, simple manufacturing process, short maintenance time, wide source of raw materials, environmental protection and low cost.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a physical similarity simulation experiment material and a preparation method thereof. Background technique [0002] The similar simulation test has the characteristics of short research cycle, low cost, and intuitive results. It can repeatedly analyze the influencing factors and is an important means of indoor research in coal mining. Similar simulation tests have been widely used in the study of rock movement and overburden failure laws in the process of coal seam mining. The model material in the similar simulation test is a model made of materials with similar mechanical properties to the prototype, laid in a certain proportion, and it has all or the main features of the prototype structure. The selection and ratio of similar materials have a great influence on the physical and mechanical properties of the model material, and play a decisive role in the succe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B2201/20C04B2201/50C04B2111/00724C04B7/02C04B14/06C04B24/38
Inventor 杨涛闫医慧张杰蔡维山蔡宝山
Owner XIAN UNIV OF SCI & TECH
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