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Full-split single pore sound wave test device and debugging method thereof

A single-hole sound wave and testing device technology, which is applied to measuring devices, using sound waves/ultrasonic waves/infrasonic waves for material analysis, analyzing materials, etc., can solve problems such as water leakage, inability to inject water, and loss of meaning in water coupling test results. To achieve the effect of expanding the detection range and broad application prospects

Active Publication Date: 2012-01-11
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) If the rock mass at the test site is relatively broken, for vertical or oblique downward holes, the water in the injection hole will leak out quickly, and good water coupling cannot be guaranteed;
[0006] (2) When some mineral components in the rock mass are sensitive to water (or other coupling agents), they soften or expand when exposed to water, which changes their physical and mechanical properties, making the water coupling test results meaningless;
[0007] (3) The water injected into the acoustic wave detection hole penetrates into the rock mass fissures around the hole and fills the fissures, which may also affect the authenticity of the acoustic wave detection results;
[0008] (4) For oblique or vertical holes, water injection cannot be used for coupling, and ordinary acoustic wave detection devices cannot be used for detection
The problem with these types of dry-hole transducers is that in poor parts of the rock mass, what the acoustic wave detection probe detects is likely to be the wave velocity of the rubber bag.

Method used

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  • Full-split single pore sound wave test device and debugging method thereof
  • Full-split single pore sound wave test device and debugging method thereof
  • Full-split single pore sound wave test device and debugging method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: as Figure 1 to Figure 3 As shown, the acoustic wave testing device of this embodiment adopts a double-receiving type, including a detection probe, a transmitting transducer 1 is installed at the bottom, a receiving transducer 2 is respectively installed at the top and the middle, and two receiving transducers 2 The distance between them is 20cm, and at the same time each transmitting transducer 1 and receiving transducer 2 are wrapped with mutually independent bladders 3, and each transmitting transducer 1 and receiving transducer 2 are separated from each other, which solves the problem of When the rock mass condition is poor, the acoustic wave velocity of skin 3 interferes with the real rock mass acoustic velocity. Each bladder 3 is equipped with its own independent thin tube for water injection, and the thin tube for water injection doubles as an exhaust pipe at the same time. Before use, squeeze the leather bag 3 with your hands to discharge the gas ...

Embodiment 2

[0039] Embodiment 2: as Figure 4-Figure 6 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that an independent air bag 5 is provided outside each skin bag 3, and the centers of each air bag 5 are located on the same straight line. Before the detection probe is put into the detection hole, the air bag 5 is in a contracted state. After the detection probe is put into the predetermined position in the detection hole, the air bag 5 is inflated through the respective inflation tubes of the air bag 5, so that the air bag 5 is inflated, and the water-filled skin bag 3 is pushed. Closely coupled with the detection hole wall, the acoustic wave detection can be carried out.

[0040] The implementation steps of this embodiment are as follows:

[0041] a1, b1, c1 steps are the same as steps a, b, c in embodiment 1;

[0042] d1. Inflate the airbags 5 located at the top, middle and bottom of the detection probe in turn, start sam...

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Abstract

The invention relates to a full-split single pore sound wave test device and a debugging method thereof. The technical problem to be solved is to provide a full-split single pore sound wave test device and a debugging method thereof. Good coupling between a detection probe and the pore wall is guaranteed, and the interference of wave velocities of leather bags on real wave velocity of rock mass is overcome when the quality of the rock mass is poor. The technical scheme to solve the problem is that: the full-split single pore sound wave test device is provided with the detection probe on whicha group of transmitting transducers and receiving transducers at intervals are arranged; an independent leather bag is coated outside each transducer; and each leather bag is provided with an independent thin water injection tube. The debugging method comprises the following steps: a, filling water in the leather bags, and putting the probe in a detection hole; b, filling water in the leather bags again and sampling; c, if the wave form is fuzzy, rotating or moving the probe and repeating the step b until the wave form is clear, and starting to detect. The full-split single pore sound wave test device and the debugging method thereof are mainly applied to nondestructive testing of loose areas for side slope and tunnel excavation in hydropower engineering, transportation, mine and other projects.

Description

technical field [0001] The invention relates to a single-hole acoustic wave testing device and its debugging method, in particular to a fully separated single-hole acoustic wave testing device and its debugging method, which is mainly applicable to slopes and tunnels in water conservancy and hydropower projects, transportation, mines and other projects. The non-destructive testing of the loose area is especially suitable for single-hole acoustic testing in areas where the rock mass is relatively broken, or when ordinary acoustic wave testing devices such as upward inclined holes and vertical upward holes cannot achieve good water coupling (or other couplant coupling). Background technique [0002] Acoustic wave detection is the use of artificial methods to apply dynamic loads to the measured medium as an excitation source for exciting elastic waves, making them propagate in the medium, and then receiving the incoming acoustic wave information (including: wave velocity, amplit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/28
Inventor 严鹏单治钢
Owner POWERCHINA HUADONG ENG COPORATION LTD
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