JPS57116822A - Ground surveying instrument - Google Patents
Ground surveying instrumentInfo
- 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
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
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)
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)
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 |
-
1981
- 1981-01-13 JP JP337681A patent/JPS57116822A/en active Pending
Patent Citations (2)
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)
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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