An all-in-one machine suitable for rock true triaxial, dry-wet cycle and acoustic emission tests
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A dry-wet cycle, acoustic emission technology, applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, measuring devices, etc., can solve the problem of reducing the number and energy of acoustic emission events, increasing the propagation distance, and low information signal-to-noise ratio. And other issues
Active Publication Date: 2022-06-17
YANGTZE UNIVERSITY
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In this case, the rock sample fixture will cause the propagation distance to increase, resulting in a decrease in the number and energy of the received AE events
In addition, the interference of external noise, especially the interference of electromagnetic signals, so the signal-to-noise ratio of the received information is relatively low
At present, there is no report on the research on the monitoring of acoustic emission signals in the true triaxial room and the development of related equipment
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[0011] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.
[0012] Please refer to figure 1 , figure 2 , which is a schematic diagram of an integrated machine suitable for true triaxial rock, dry-wet cycle and acoustic emission test provided by the present invention.
[0013] The integrated machine for rock true triaxial, dry-wet cycle and acoustic emission testing includes: test accommodating mechanism 1, top lifting mechanism 2, lateral telescopic mechanism 3, bottom lifting mechanism 4, and acoustic emission mechanism 5. The mounting mechanism 1, the upper telescopic mechanism 2, the left telescopic mechanism 3, and the right telescopic mechanism 4 are arranged on the test accommodating mechanism 1, and the acoustic emission mechanism 3 is arranged on the test accommodating mechanism 1 sup...
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Abstract
The invention relates to an all-in-one machine suitable for rock true triaxial, dry-wet cycle, and acoustic emission tests, including: a test accommodation mechanism, a top lifting mechanism, a lateral telescopic mechanism, a bottom lifting mechanism, an acoustic emission mechanism, and a test accommodation mechanism Including base, bracket, barrel-shaped reaction force thick wall, oven cover, top axial pressure plate, bottom axial pressure plate, several lateral axial pressure plates, top lifting mechanism is fixed with oven cover, top axial pressure plate, lateral The telescopic mechanism is fixed to the lateral axial pressure plate, the bottom lifting mechanism is fixed to the bottom axial pressure plate, and the acoustic emission mechanism is arranged on the bottom lifting mechanism, and sends sound waves into the accommodating space. The invention realizes the fixing of the rock in the three-axis direction, can simulate the dry-wet cycle, detects the rock, and is helpful for geological research.
Description
technical field [0001] The invention relates to the field of rock mechanics and engineering geology research equipment, in particular to an integrated machine suitable for true triaxial rock, dry-wet cycle and acoustic emission test. Background technique [0002] One of the core issues in the evaluation of the stability of slopes, dam foundations and surrounding rocks of underground caverns is to determine the mechanical properties of the rock. Accurate determination of the mechanical properties of the rock is the basis for numerical simulation to evaluate the deformation and stability of various rock masses. The methods of studying the mechanical properties of rocks under multi-dimensional stress state mainly include conventional triaxial tests (σ 1 >σ 2 =σ 3 ≠0) and true triaxial tests (σ 1 >σ 2 >σ 3 ≠0). The rock inside the earth is in a three-dimensional stress state, and the conventional triaxial test ignores the influence of the intermediate principal st...
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