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Rock microwave fracturing testing device based on true triaxial loading

A test device and true three-axis technology, applied in microwave heating, instruments, teaching models, etc., can solve the problems of affecting construction progress, increasing construction costs, and consuming single-knife cutter rings

Active Publication Date: 2018-10-19
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the shield construction of the Qinling Tunnel of Yinhan Jiwei Project, hard quartzite and granite were encountered. During the total excavation distance of 2000m, a total of 38 center knives were replaced, 1668 single knives were replaced, and 858 single knives were consumed. The cost increased significantly and the construction schedule was seriously affected

Method used

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  • Rock microwave fracturing testing device based on true triaxial loading
  • Rock microwave fracturing testing device based on true triaxial loading
  • Rock microwave fracturing testing device based on true triaxial loading

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as Figure 1-13 As shown, a rock microwave fracturing test device based on true triaxial loading includes a true triaxial loading assembly and a microwave radiation fracturing assembly; the true triaxial loading assembly includes a fixed loading frame 1 and a movable loading frame 2 , base 3, track 4, slide table 5 and two-degree-of-freedom mobile frame; the fixed loading frame 1 adopts a square structure, and the middle space of the fixed loading frame 1 is a rock sample loading cavity; The fixed loading frame 1 directly above the sample loading chamber is provided with a first Z-direction actuator 6, and the fixed loading frame 1 directly below the rock sample loading chamber is provided with a second Z-direction actuator 7. The fixed loading frame 1 on the left side of the rock sample loading chamber is provided with a...

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Abstract

The invention discloses a rock microwave fracturing testing device based on true triaxial loading. The rock microwave fracturing testing device based on true triaxial loading comprises a true triaxialloading assembly and two microwave radiation fracturing assemblies, and the two microwave radiation fracturing assemblies are the microwave radiation surface fracturing assembly and the microwave radiation in-hole fracturing assembly respectively; the true triaxial loading assembly comprises a fixed loading frame, a movable loading frame, a base, a rail, a sliding table and a two-degree-of-freedom movable frame; two groups of Z-direction actuators and two groups of Y-direction actuators are arranged on the fixed loading frame, and an X-direction actuator is arranged on the movable loading frame; a rock sample loading cavity is located in the middle of the fixed loading frame; both the movable loading frame and the sliding table are arranged on the rail through sliding blocks; both the microwave radiation surface fracturing assembly and the microwave radiation in-hole fracturing assembly are installed on the sliding table through the two-degree-of-freedom movable frame, and the slidingtable and the two-degree-of-freedom movable frame are driven by servo motors; a microwave shielding net is arranged on the movable loading frame, and the testing device is wholly arranged in an electromagnetic shielding chamber.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering and mining engineering, in particular to a rock microwave fracturing test device based on true triaxial loading. Background technique [0002] Microwave-assisted rock-breaking technology is a new rock-breaking technology with great potential. Before cutting rocks with mechanical tools, microwaves are used to pre-irradiate rocks to reduce mechanical properties such as uniaxial compression, tensile strength, and point load strength. The problem that the cutter is easy to wear when the mechanical method breaks the hard rock can improve the rock breaking efficiency and reduce the rock breaking cost. [0003] In tunnel construction, the use of shield machines and TBM cutterheads for tunnel shield construction has become more and more widespread. However, due to the influence of boulders, severe tool wear, deformation of cutter holders, and difficulty in replacement often occur. Abrasi...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/00G09B25/02H05B6/64
CPCE21D9/00E21D9/0879G09B25/02H05B6/64
Inventor 冯夏庭卢高明李元辉张希巍姜超童天扬龚彦华
Owner NORTHEASTERN UNIV
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