Pressure-bearing type acoustic detection probe used for engineering

Abstract

The invention provides a pressure-bearing type acoustic detection probe used for the engineering, which comprises a probe body, wherein the probe body is provided with pore water through holes, and grooves are regularly distributed on the pressure-bearing surface of the probe body and are communicated with the pore water through holes. Through adoption of the technical scheme, the pressure-bearing type acoustic detection probe used for the engineering is characterized in that the grooves regularly distributed on the pressure-bearing surface of the pressure-bearing type acoustic detection probe can correspond to pore cracks randomly distributed in and on the surface of the tested engineering materials such as rock, and the grooves are communicated with the pore water through holes. Compared with the prior art, the pressure-bearing type acoustic detection probe used for the engineering has the advantages that the pressure-bearing surface construction form of the traditional probe is broken through, the defect that the pore water through holes of the traditional probe can not correspond to the pore cracks randomly distributed on the engineering materials such as rocks is overcome, so that water can evenly and effectively penetrate into the pore cracks; therefore, the pore crack distribution and extension characteristics of the engineering materials such as rocks under the condition that a stress field and a seepage field are coupled can be more scientifically and reasonably researched.

Description

technical field [0001] The invention relates to a testing device in the field of engineering material testing, in particular to a pressure-bearing penetration type acoustic measuring probe for engineering based on a rock triaxial testing system. Background technique [0002] In the field of engineering testing, in order to study the distribution and expansion of pores and cracks of engineering materials such as rocks under the coupling of stress field and seepage field, it is necessary to test the parameters of acoustic wave transmission velocity and water permeability of engineering materials such as rocks. Axis test, during the test, it is necessary to configure a pressure-bearing penetration acoustic probe for the three-axis servo test system, that is, in order to meet the test requirements, in addition to the strength and stiffness of the probe, it needs to be compatible with the three-axis servo test mechanism and engineering materials such as rocks. To match, the probe...

AI Technical Summary

Problems solved by technology

[0004] Due to the random distribution of pores and fissures formed in the interior of engineering materials such as rocks and on the surface, the existing pressure-bearing permeable acoustic probes are mostly set on the pressure-bearing surface of the probe for the pore water through-holes used to transport infiltration water. The center of the hole does not correspond to the randomly distributed pores and fissures of rock and other engineering materials, so that water cannot penetrate uniformly and effectively in the pores and fissures, resulting in the inability to obtain objective and accurate penetration test results, which in turn affects the overall reliability of the triaxial test results. So that it is impossible to scientifically and rationally study the distribution and expansion characteristics of pores and cracks in engineering materials such as rocks under the coupling of stress field and seepage field

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