JPS6439580A - Measuring method for in-ground displacement by acoustic emission method - Google Patents
Measuring method for in-ground displacement by acoustic emission methodInfo
- Publication number
- JPS6439580A JPS6439580A JP62197929A JP19792987A JPS6439580A JP S6439580 A JPS6439580 A JP S6439580A JP 62197929 A JP62197929 A JP 62197929A JP 19792987 A JP19792987 A JP 19792987A JP S6439580 A JPS6439580 A JP S6439580A
- Authority
- JP
- Japan
- Prior art keywords
- prescribed
- counter
- wave
- slide
- event
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To accurately determine the position of a slide layer, etc., by analyzing signal waveforms from a couple of transducers provided above and below an AE wave (elastic wave) measurement rod and finding the integral value of an AE event, etc. CONSTITUTION:The AE signal waves from the transducers provided above and below the AE wave measurement rod are inputted to a signal conditioner 14 through a preamplifier 11, an isolation module 12, and a filter 13. Here, a counter 16 counts only waveforms exceeding a prescribed threshold value and outputs the counted value to a plotter, etc. Pulses sent to a digital envelope processor 15, on the other hand, are outputted to the counter 16 so that a pulse train generated every time a prescribed blind time is elapsed is regarded as one pulse corresponding to one event. The output of the counter 16 becomes data indicating the slide quantity, etc., of the slide layer from prescribed expression for obtaining a counter rate, etc., by inputting a prescribed command pulse from a reset clock 17. Further, an analyzer 18 takes an analysis to find the position of a fluid layer from the prescribed expression according to a propagation speed, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197929A JPS6439580A (en) | 1987-08-06 | 1987-08-06 | Measuring method for in-ground displacement by acoustic emission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62197929A JPS6439580A (en) | 1987-08-06 | 1987-08-06 | Measuring method for in-ground displacement by acoustic emission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6439580A true JPS6439580A (en) | 1989-02-09 |
| JPH0523719B2 JPH0523719B2 (en) | 1993-04-05 |
Family
ID=16382629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62197929A Granted JPS6439580A (en) | 1987-08-06 | 1987-08-06 | Measuring method for in-ground displacement by acoustic emission method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6439580A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862337A (en) * | 1994-08-25 | 1996-03-08 | Iwao Nakajima | Measuring device for ae wave |
| WO2010086584A2 (en) | 2009-01-29 | 2010-08-05 | Loughborough University | Apparatus and method for monitoring soil slope displacement rate by detecting acoustic emissions |
| CN113108732A (en) * | 2021-04-13 | 2021-07-13 | 江西理工大学 | Guided wave monitoring method for slope landslide early warning |
| CN115342760A (en) * | 2022-07-22 | 2022-11-15 | 江西理工大学 | Dump landslide early warning method, system, terminal and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2166348A1 (en) * | 2007-07-12 | 2010-03-24 | National Institute Of Advanced Industrial Science | High-pressure tank damage detecting method and device therefor |
-
1987
- 1987-08-06 JP JP62197929A patent/JPS6439580A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862337A (en) * | 1994-08-25 | 1996-03-08 | Iwao Nakajima | Measuring device for ae wave |
| WO2010086584A2 (en) | 2009-01-29 | 2010-08-05 | Loughborough University | Apparatus and method for monitoring soil slope displacement rate by detecting acoustic emissions |
| CN113108732A (en) * | 2021-04-13 | 2021-07-13 | 江西理工大学 | Guided wave monitoring method for slope landslide early warning |
| CN115342760A (en) * | 2022-07-22 | 2022-11-15 | 江西理工大学 | Dump landslide early warning method, system, terminal and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523719B2 (en) | 1993-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |