JPS57116822A - Ground surveying instrument - Google Patents

Ground surveying instrument

Info

Publication number
JPS57116822A
JPS57116822A JP337681A JP337681A JPS57116822A JP S57116822 A JPS57116822 A JP S57116822A JP 337681 A JP337681 A JP 337681A JP 337681 A JP337681 A JP 337681A JP S57116822 A JPS57116822 A JP S57116822A
Authority
JP
Japan
Prior art keywords
ground
supersonic wave
sensor
permeable material
transmitter
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
JP337681A
Other languages
Japanese (ja)
Inventor
Fumio Yamauchi
Shigeo Nakano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP337681A priority Critical patent/JPS57116822A/en
Publication of JPS57116822A publication Critical patent/JPS57116822A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To exactly measure the constructing range of the ground for a structure by preventing the occurrence of inductive noise by wiring a cable to be connected to a supersonic wave sensor in the inside of a protective cylinder made of a magnetic permeable material.
CONSTITUTION: A hardened ground E is constructed by penetrating a grout, e.g., water glass, etc., into the ground E through the peripheral side of a drill bar 2. A metering device 6 consisting of an electromagnetic supersonic wave transmitter (coil) 7 and a supersonic wave sensor 8 is attached to the lower end of a vertically movable rotary rod 5, and a protective cylinder 9 made of a highly magnetic permeable material, e.g., ceramics, etc., is fitted into the inside of the transmitter 7. A supersonic wave pulse P1 of a fixed frequency is sent in the radial direction of the ground E1, a reflection wave P2 from the interface between the grounds E1 and E is received by the sensor 8, and the time difference between the waves P1 and P2 is displayed on an indicator 15 to measure the distance to the outer edge of the ground where grouting work is to be performed.
COPYRIGHT: (C)1982,JPO&Japio
JP337681A 1981-01-13 1981-01-13 Ground surveying instrument Pending JPS57116822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP337681A JPS57116822A (en) 1981-01-13 1981-01-13 Ground surveying instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP337681A JPS57116822A (en) 1981-01-13 1981-01-13 Ground surveying instrument

Publications (1)

Publication Number Publication Date
JPS57116822A true JPS57116822A (en) 1982-07-21

Family

ID=11555630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP337681A Pending JPS57116822A (en) 1981-01-13 1981-01-13 Ground surveying instrument

Country Status (1)

Country Link
JP (1) JPS57116822A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011108A (en) * 1983-07-01 1985-01-21 Mitsui Constr Co Ltd Cavity wall measuring machine
JP2009092444A (en) * 2007-10-05 2009-04-30 Tokyo Soil Research Co Ltd Method and device for measuring pile shape
CN105091856A (en) * 2015-07-22 2015-11-25 河海大学 Shallow-basin riverbed microtopography measurement apparatus
JP2017082498A (en) * 2015-10-29 2017-05-18 前田建設工業株式会社 Vertical accuracy measurement method of pile-shaped ground improvement body by mechanical agitation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50145255A (en) * 1974-05-13 1975-11-21
JPS5495288A (en) * 1978-01-11 1979-07-27 Nippon Steel Corp Electromagnetic ultrasonic generation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50145255A (en) * 1974-05-13 1975-11-21
JPS5495288A (en) * 1978-01-11 1979-07-27 Nippon Steel Corp Electromagnetic ultrasonic generation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011108A (en) * 1983-07-01 1985-01-21 Mitsui Constr Co Ltd Cavity wall measuring machine
JP2009092444A (en) * 2007-10-05 2009-04-30 Tokyo Soil Research Co Ltd Method and device for measuring pile shape
CN105091856A (en) * 2015-07-22 2015-11-25 河海大学 Shallow-basin riverbed microtopography measurement apparatus
CN105091856B (en) * 2015-07-22 2017-05-31 河海大学 A kind of shallow basin riverbed mima type microrelief measuring equipment
JP2017082498A (en) * 2015-10-29 2017-05-18 前田建設工業株式会社 Vertical accuracy measurement method of pile-shaped ground improvement body by mechanical agitation

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