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High-strength, high-brittleness, high-density similar material for deep hard rock and its preparation method

A similar material, high-strength technology, applied in the field of deep hard rock high-strength, high-brittleness, high-severity similar materials and their preparation, can solve the problems of low strength and poor brittleness

Inactive Publication Date: 2019-10-01
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

[0005] The invention provides a high-strength, high-brittleness and high-severity similar material for deep hard rock, which solves the technical problems of low strength and poor brittleness of similar materials in the prior art

Method used

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  • High-strength, high-brittleness, high-density similar material for deep hard rock and its preparation method
  • High-strength, high-brittleness, high-density similar material for deep hard rock and its preparation method
  • High-strength, high-brittleness, high-density similar material for deep hard rock and its preparation method

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preparation example Construction

[0035] This embodiment also provides a preparation method based on the above materials.

[0036] A method for preparing similar materials with high strength, high brittleness and high gravity in deep hard rock, including:

[0037] Weigh calcite sand, calcite powder, dolomite sand, gypsum, cement and PbO powder, mix and stir evenly to obtain a mixed solid;

[0038] Weigh water and water reducer and mix well to obtain a mixed solution;

[0039] Pour the mixed solution into the mixed solid material, stir evenly and put it into a mold;

[0040] After the initial setting of the material in the mold, compact molding with a press;

[0041] The material is demolded after curing in a dry and ventilated place indoors;

[0042] Curing under natural conditions indoors, and then curing at high temperature until the material hardens and the quality is constant.

[0043] Present embodiment also provides a kind of concrete material composition and prescription:

[0044] Aggregate is calc...

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Abstract

The invention belongs to the technical field of three-dimensional physical model tests in geotechnical engineering and discloses a deep hard rock high-strength high-brittleness high-weight similar material and a preparation method thereof. The similar material comprises the following components: aggregate comprising calcite sand, dolomite sand and calcite powder, and cementing materials comprisingcement and gypsum. According to the similar material and the preparation method thereof provided by the invention, the principle components in crude rock, such as the calcite sand and calcite powder,are selected to improve the brittleness of the material; during preparation, the material is densified, so that the material strength is improved, and the brittleness characteristic of the calcite isachieved; by considering the grading effect, different types of aggregate particles with different sizes are selected, and inoculating conditions similar to a deep high-temperature environment are formed after preparation completion by adopting high-temperature curing, so that the similarity of the material is improved; and the characteristics of Jinping marble are successfully simulated, and thesimilar material is high in preparation efficiency, stable in performance and wide in source.

Description

technical field [0001] The invention relates to the technical field of three-dimensional physical model tests of geotechnical engineering, in particular to a deep hard rock high-strength, high-brittleness, high-density similar material and a preparation method thereof. Background technique [0002] Rockbursts often occur during the construction of water conservancy and hydropower, transportation, nuclear waste geological treatment, and deep physical underground laboratories, causing huge economic losses and casualties. Many important results have been achieved through on-site monitoring, but the influencing factors of the on-site test are complex, constrained by geological conditions, and pose a greater threat to personnel safety. Therefore, the on-site engineering environment is reproduced through the three-dimensional physical model test, and different influencing factors are set to avoid the safety risk of personnel and facilitate further research on rockburst disasters. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/54
Inventor 冯夏庭祝国强韩勇张頔李正伟辜良杰
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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