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On-site microwave rock breaking simulation system and simulation method

A simulation system, microwave technology, applied in mining, geotechnical engineering, and tunnel fields, can solve problems such as difficult to effectively guide microwave rock breaking work, inaccurate simulation of on-site working conditions, and failure to consider the impact of confining pressure, etc.

Pending Publication Date: 2020-06-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the existing laboratory test methods cannot accurately simulate the field conditions. On the one hand, microwaves cannot only act on one surface of the rock sample, and on the other hand, the influence of confining pressure on other sections is not considered. The best working conditions obtained by laboratory test methods can be used as a reference for microwave rock breaking in engineering practice, and it is difficult to effectively guide the actual microwave rock breaking work.

Method used

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  • On-site microwave rock breaking simulation system and simulation method
  • On-site microwave rock breaking simulation system and simulation method
  • On-site microwave rock breaking simulation system and simulation method

Examples

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Embodiment 1

[0044] The on-site microwave rock-breaking simulation system described in this embodiment includes a microwave source 1, a waveguide 2, a circulator 3, a water load 4, a rock-breaking test chamber 5, a microwave blocking and confining pressure loading system, and a data acquisition system. The microwave source is a solid-state microwave source with a water-cooled structure, and the water load also has a water-cooled structure. When the microwave source and the water load are working, flowing cold water should be introduced into their water-cooled structure to prevent the equipment from being overheated and damaged. Water loads can be purchased directly from the market.

[0045] One end of the waveguide 2 is connected to the microwave exit port of the microwave source 1, and the other end is connected to the microwave entrance port of the circulator 3. The microwave exit port of the circulator 3 is connected to the microwave entrance port of the rock-breaking test chamber 5. Th...

Embodiment 2

[0049] In this embodiment, the simulation system described in Embodiment 1 is used to simulate on-site microwave rock breaking, including the following steps:

[0050] S1: Paste the sensor on the surface of the rock sample, open the door of the rock-breaking test chamber, and place the rock sample with the sensor on the surface on the microwave blocking front plate located below the rock-breaking test chamber. Adjust the height of the microwave blocking front plate on which the rock sample is placed, so that the microwave irradiation surface of the rock sample faces the microwave entrance of the rock-breaking test chamber; adjust the microwave blocking front plate above the rock sample to be close to the rock sample. The upper surface of the sample is attached; adjust the positions of the other three microwave blocking positive plates so that they are respectively attached to the other three surfaces of the rock sample and expose the microwave irradiation surface.

[0051]In t...

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Abstract

The invention provides an on-site microwave rock breaking simulation system. The on-site microwave rock breaking simulation system comprises a microwave source, a wave guide tube, a circulator, a water load, a rock breaking test cabin, a microwave blocking and confining pressure loading system and a data acquisition system. The microwave blocking and confining pressure loading system is composed of a jack, microwave blocking front plates and microwave blocking side plates; all the microwave blocking front plates surround the other faces, except for a microwave irradiation face subjected to microwave irradiation treatment, of a rock sample located in the rock breaking test cabin, and all the microwave blocking side plates seal a gap between the microwave irradiation face of the rock sampleand the inner wall of the rock breaking test cabin on the plane where the microwave irradiation face of the rock sample is located; the microwaves only act on one face of the rock sample and correspond to a tunnel face in engineering practice. The invention further provides an on-site microwave rock breaking simulation method. The field microwave rock breaking working condition can be simulated more truly, and microwave rock breaking work can be guided more effectively in engineering practice.

Description

technical field [0001] The invention belongs to the field of tunnels, mining and geotechnical engineering, and relates to an on-site microwave rock-breaking simulation system and a simulation method. Background technique [0002] With the development of industry, the resources in the shallow part of the earth are gradually exhausted, and the exploitation of resources by human beings continues to advance to the deep part. However, with the extension of mining depth, the strength of rock mass increases non-linearly. The traditional mechanical rock breaking method seriously restricts the mining efficiency of deep resources and increases the mining cost. Due to the advantages of fast heating rate and no secondary pollution, microwave is expected to be used in the field of engineering rock crushing to break through the bottleneck of traditional mechanical rock crushing. Existing studies have also demonstrated the feasibility of microwave rock breaking, and through indoor researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C37/18E21B7/00E21B47/00E21B47/12G01N29/14G01J5/00G01B11/16
CPCE21C37/18E21B7/00E21B47/00E21B47/12G01N29/14G01J5/00G01B11/16
Inventor 杨本高高明忠谢晶陆彤彭高友王飞王明耀刘军军刘依婷
Owner SICHUAN UNIV
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