Temperature-controllable rock uniaxial compression sound emission test device and temperature-controllable rock uniaxial compression sound emission test method

Abstract

The invention discloses a temperature-controllable rock uniaxial compression sound emission test device and a temperature-controllable rock uniaxial compression sound emission test method. The test device comprises a loading system, a heating system, a temperature control system, a strain system and a sound emission system, wherein the heating system, the temperature control system, the strain system and the sound emission system are all arranged on the loading system. According to the test method, a rock sample is arranged inside a soft shell, heating resistance wires are distributed around the outside of the shell, and a temperature sensor, radial and axial strain gauges and a sound emission sensor are arranged, so that the uniaxial compression multi-channel sound emission detection test can be implemented. According to the test device and the test method, the sound emission detection of the rock sample under different temperature environment influences can be simulated. The test device has a simple structure, is convenient to operate and can be used for simulating the sound emission detection demands of rock materials under different temperature environments indoors.

Description

technical field [0001] The invention relates to a temperature-controllable rock uniaxial compression acoustic emission test device and a test method, which are mainly suitable for simulating rock uniaxial compression multi-channel acoustic emission detection tests under different temperature environments in a laboratory. Background technique [0002] Temperature is an important factor affecting the physical and mechanical properties of rocks. With the rapid development of the national economy, deep rock underground engineering will increase day by day. However, the deeper into the deep engineering, the rock will be affected by the more complex temperature environment, and its physical and mechanical properties will also undergo significant changes. Therefore, it is of great significance to study the influence of temperature on the physical and mechanical properties of rocks. At present, in the uniaxial compression test of rocks in the laboratory, for the research on the ph...

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Problems solved by technology

Experiments have shown that the acoustic emission signals released by rocks in different stress stages have different combination modes. If only a single detection frequency band is used, important information of acoustic emission may be missed

[0004] In the international rock mechanics test standard, the suggested requirement for the rock sample is a standard cylinder. Usually, when the rock uniaxial compression acoustic emission detection test is carried out in the laboratory, the placement method of the acoustic emission sensor

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