JPS577553A - Measuring method for excessive stress generated in rock bed - Google Patents

Measuring method for excessive stress generated in rock bed

Info

Publication number
JPS577553A
JPS577553A JP8085580A JP8085580A JPS577553A JP S577553 A JPS577553 A JP S577553A JP 8085580 A JP8085580 A JP 8085580A JP 8085580 A JP8085580 A JP 8085580A JP S577553 A JPS577553 A JP S577553A
Authority
JP
Japan
Prior art keywords
rock bed
excessive stress
stress generated
measuring method
hole
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.)
Pending
Application number
JP8085580A
Other languages
Japanese (ja)
Inventor
Hideji Hikage
Katsuhiko Kumagai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toda Corp
Original Assignee
Toda Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toda Corp filed Critical Toda Corp
Priority to JP8085580A priority Critical patent/JPS577553A/en
Publication of JPS577553A publication Critical patent/JPS577553A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (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 prevent the collapse of a rock bed in an excavating operation, by analyzing the ultrasonic vibration resulting from the stress generated inside the rock bed. CONSTITUTION:A hole 3 is drilled at a necessary portion of a rock bed 2 around an underground structure 1. In the hole 3, a vibration receiving device 4 such as a microphone is inserted, and the output thereof is supplied to an amplifier 7, to which headphone 8 and a recorder 9 are connected. Thereby, the recorded data are analyzed to detect the excessive stress being generated in the rock bed and to take a countermeasure for said portion.
JP8085580A 1980-06-17 1980-06-17 Measuring method for excessive stress generated in rock bed Pending JPS577553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8085580A JPS577553A (en) 1980-06-17 1980-06-17 Measuring method for excessive stress generated in rock bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8085580A JPS577553A (en) 1980-06-17 1980-06-17 Measuring method for excessive stress generated in rock bed

Publications (1)

Publication Number Publication Date
JPS577553A true JPS577553A (en) 1982-01-14

Family

ID=13729952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8085580A Pending JPS577553A (en) 1980-06-17 1980-06-17 Measuring method for excessive stress generated in rock bed

Country Status (1)

Country Link
JP (1) JPS577553A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6283654A (en) * 1985-10-09 1987-04-17 Tokyu Constr Co Ltd Method for measuring ae in concrete structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660330A (en) * 1979-10-22 1981-05-25 Oyo Chishitsu Kk Measuring method dependent upon ae for earth pressure in hole

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660330A (en) * 1979-10-22 1981-05-25 Oyo Chishitsu Kk Measuring method dependent upon ae for earth pressure in hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6283654A (en) * 1985-10-09 1987-04-17 Tokyu Constr Co Ltd Method for measuring ae in concrete structure

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