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Similar material for simulating IV-grade and V-grade surrounding rocks in cross-fault tunnel model test and preparation method thereof

A technology of similar materials and tunnel models, applied in the preparation of test samples, sustainable waste treatment, solid waste management, etc., can solve the problems of serious oil pollution, complex operation process, difficult waste disposal, etc. Less, easy operation process, low cost effect

Pending Publication Date: 2022-06-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned research results on similar materials for tunnel surrounding rocks still have room for improvement and optimization. Engine oil pollutes the environment more seriously, and the waste after the test is completed is difficult to dispose of; the economic cost of raw materials such as barite powder and vaseline is relatively high; If there are many types of raw materials in the ratio, the operation process will be complicated in the preparation process of similar materials and it will be difficult to prepare

Method used

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  • Similar material for simulating IV-grade and V-grade surrounding rocks in cross-fault tunnel model test and preparation method thereof
  • Similar material for simulating IV-grade and V-grade surrounding rocks in cross-fault tunnel model test and preparation method thereof

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Embodiment 1

[0022] Embodiment 1: A similar material for simulating the surrounding rocks of grades IV and V in a model test of a cross-fault tunnel, the weight proportions of the similar materials used for different surrounding rock grades are as follows:

[0023] The proportions of similar materials for grade IV surrounding rock are as follows: fly ash: 90-100 parts, quartz sand: 30-40 parts, bentonite: 20-30 parts, water: 50-60 parts;

[0024] The proportions of similar materials for grade V surrounding rock are as follows: fly ash: 90-100 parts, quartz sand: 25-35 parts, bentonite: 16-24 parts, water: 46-60 parts.

[0025] Further, the proportions of similar materials for grade IV surrounding rock are as follows: fly ash: 90 parts, quartz sand: 30 parts, bentonite: 30 parts, water: 60 parts.

[0026] Further, the proportions of similar materials of grade IV surrounding rock are as follows: fly ash: 95 parts, quartz sand: 35 parts, bentonite: 24 parts, water: 50 parts.

[0027] Further...

Embodiment 2

[0031] Embodiment 2: A preparation method of a similar material for simulating the surrounding rock of grades IV and V in a model test of a cross-fault tunnel, comprising:

[0032] S1. According to the actual physical and mechanical parameters, geometric similarity ratio and heavy similarity ratio of the surrounding rocks of grades IV and V in the cross-fault tunnel model test, determine the range of physical and mechanical parameters of similar materials for the surrounding rocks of IV and V;

[0033] S2. Determine the proportion by weight of the corresponding raw materials according to the physical and mechanical parameter ranges of the similar materials of the surrounding rocks IV and V; among them, the proportions of the similar materials of the class IV surrounding rocks are as follows: fly ash: 90-100 parts, quartz sand: 30- 40 parts, bentonite: 20-30 parts, water: 50-60 parts; the proportions of similar materials of grade V surrounding rock are as follows: fly ash: 90-10...

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Abstract

The invention discloses a similar material for simulating IV-grade and V-grade surrounding rocks in a cross-fault tunnel model test and a preparation method of the similar material. The method can be used for preparing surrounding rock similar materials with different similarity ratios for tunnel model tests, and IV-grade and V-grade surrounding rock similar materials for cross-fault tunnel model tests; only the four raw materials including the fly ash, the quartz sand, the bentonite and the water are adopted, the number of the materials is small, the materials are easy to obtain, the cost is low, and the materials are non-toxic and harmless, compared with similar materials adopting engine oil, barite powder and other raw materials, the materials are green and environmentally friendly, and the cost can be controlled in a large-scale model test; the physical and mechanical parameters of the surrounding rock similar material provided by the invention are wide in adaptation, and IV and V grade surrounding rock similar materials for most cross-fault tunnel model tests can be simulated; and the similar material is simple in preparation method, convenient to cast and form, easy in operation flow and stable in material property.

Description

technical field [0001] The invention relates to a similar material and a preparation method for simulating the surrounding rocks of grades IV and V in a model test of a cross-fault tunnel, and belongs to the technical field of tunnel model tests. Background technique [0002] With the rapid development of transportation infrastructure, the construction scale and operating mileage of tunnels have gradually increased. Many mountain tunnels have appeared. Mountain tunnels exist in complex and changeable geological environments, and faults and broken zones are often encountered during construction. Such unfavorable geology can easily induce accidents such as water inrush, mud intrusion and tunnel collapse, which brings great challenges to the design and construction of tunnel engineering. Therefore, the research on the mechanical behavior and failure characteristics of cross-fault tunnels has important theoretical significance and engineering practical value. Model test is a sc...

Claims

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Application Information

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IPC IPC(8): G01N1/28C04B28/00
CPCG01N1/28C04B28/001C04B2201/50C04B18/08C04B14/06Y02W30/91
Inventor 丁祖德王顺国张万平沈万虎陈誉升廖明荣
Owner KUNMING UNIV OF SCI & TECH
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