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Softrock-like material and preparation method

A technology of similar materials and soft rocks, applied in the field of model test similar materials, can solve the problems of low bulk density, poor plastic deformation ability of materials, low elastic strength ratio, etc., and achieve strong plastic deformation ability, good material uniformity, and stable mechanical properties reliable effect

Inactive Publication Date: 2009-12-30
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mechanical properties of these similar materials are similar to those of rocks. However, these materials are usually used to simulate brittle rocks. They have large bulk density, large elastic-strength ratio, and poor plastic deformation ability of materials, so they are not suitable for simulating soft rocks with such characteristics. Rock with low bulk density, low elastic-strength ratio, and strong rheology

Method used

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  • Softrock-like material and preparation method
  • Softrock-like material and preparation method
  • Softrock-like material and preparation method

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Embodiment 1

[0064] A kind of soft rock similar material, it is made up of following raw materials in parts by weight:

[0065] Raw material parts by weight

[0066] (1) Filling material 100 parts

[0067] (2) 20 parts of aggregate

[0068] (3) 6.6 parts of cementing material

[0069] (4) 6.6 parts of additives

[0070] (5) Water: 19.4 parts

[0071] Selection of raw materials: The barite powder is selected from the common barite powder produced by Wuhan Zhongyuan Jinbei Industry and Trade Co., Ltd., and its quality indicators are:

[0072] Barium sulfate content: ≥90%

[0073] Fineness: 200 mesh -325 mesh

[0074] Water soluble matter: ≤0.1%

[0075] Clay effect Pa·s: ≤0.125

[0076] The quartz sand is selected from the commercially available 20-mesh white quartz sand produced by Wuhan New Quartz Sand Factory.

[0077] The gypsum is selected from the plaster of paris produced by the Hubei Yingcheng Gypsum Factory on the market, and its quality index is:

[0078] Whiteness: ≥84 ...

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Abstract

The invention discloses a softrock-like material and a preparation method thereof. The softrock-like material is composed of filler, aggregate, cementitious materials, additives and water in certain proportion. The preparation method comprises the steps of: 1. weighing the raw materials; 2. loading and stirring: adding water in a stirrer, causing the barrel wall of the stirrer to be smooth, then starting the stirrer, and adding the filler, aggregate, cementitious materials and additives sequentially followed by continuous stirring; 3. adding water and stirring: adding water during stirring, setting the speed of the stirrer at high and continuing stirring; 4. shaking and forming: discharging the materials, pouring the slurry into a pre-manufactured die, vibrating with a vibrating rod, causing the slurry to be even, removing foam and finally scraping the surface of the model to be level; and 5. maintaining in a baking house: sending the manufactured die into the baking house for maintenance. The material has the characteristics of low volume-weight, low compression strength and elastic modulus, stable property, easy processing, low cost and no toxicity, and is suitable for geomechanics research on softrock exploration and stability of softrock underground gas storage cavity.

Description

technical field [0001] The invention relates to a model test similar material, more specifically to a soft rock similar material, and also relates to a preparation method of the soft rock similar material. The soft rock similar material is mainly suitable for the scientific research of geomechanical model tests on soft rock mining and soft rock underground gas storage (oil) depot cavity stability. Background technique [0002] my country's rock salt resources are very rich, and the proven geological reserves of table salt reach 450 billion tons, covering 9 provinces across the country. Since rock salt mining generally adopts the drilling and water-soluble mining process, the process technology is relatively difficult, especially the shape and stability control of rock salt solution cavity, which is still a technical problem in the international water-soluble mining community. [0003] At present, soft rock underground storage as the main form of energy storage has been wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N33/24G01N3/00
Inventor 戴永浩陈卫忠
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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