CA2235879A1 - Method and apparatus for detecting rock movement - Google Patents

Method and apparatus for detecting rock movement Download PDF

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Publication number
CA2235879A1
CA2235879A1 CA 2235879 CA2235879A CA2235879A1 CA 2235879 A1 CA2235879 A1 CA 2235879A1 CA 2235879 CA2235879 CA 2235879 CA 2235879 A CA2235879 A CA 2235879A CA 2235879 A1 CA2235879 A1 CA 2235879A1
Authority
CA
Canada
Prior art keywords
rock movement
electromagnetic induction
step involves
induction coil
detecting rock
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
Application number
CA 2235879
Other languages
French (fr)
Other versions
CA2235879C (en
Inventor
Moustafa Abdel Kader Mohamed
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002320677A priority Critical patent/CA2320677C/en
Priority to CA 2235879 priority patent/CA2235879C/en
Publication of CA2235879A1 publication Critical patent/CA2235879A1/en
Priority to US09/579,682 priority patent/US6529008B1/en
Application granted granted Critical
Publication of CA2235879C publication Critical patent/CA2235879C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method and apparatus for detecting rock movement. The first step involves using at least one electromagnetic induction coil as a sensor. The second step involves monitoring changes in induced electromotive force in the at least one electromagnetic induction coil over a selected time interval. This new approach is based upon changes in magnetic permeability as a result of rock movement in accordance with Faraday's law of electromagnetic induction. When a plurality of these new sensors are used the speed of the rock movement may also be determined.
CA 2235879 1998-04-27 1998-04-27 Method and apparatus for detecting rock movement Expired - Fee Related CA2235879C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002320677A CA2320677C (en) 1998-04-27 1998-04-27 Electromagnetic induction coil sensor
CA 2235879 CA2235879C (en) 1998-04-27 1998-04-27 Method and apparatus for detecting rock movement
US09/579,682 US6529008B1 (en) 1998-04-27 2000-05-26 Electromagnetic induction coil sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2235879 CA2235879C (en) 1998-04-27 1998-04-27 Method and apparatus for detecting rock movement

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002320677A Division CA2320677C (en) 1998-04-27 1998-04-27 Electromagnetic induction coil sensor

Publications (2)

Publication Number Publication Date
CA2235879A1 true CA2235879A1 (en) 1999-10-27
CA2235879C CA2235879C (en) 2002-02-05

Family

ID=4162365

Family Applications (2)

Application Number Title Priority Date Filing Date
CA 2235879 Expired - Fee Related CA2235879C (en) 1998-04-27 1998-04-27 Method and apparatus for detecting rock movement
CA002320677A Expired - Fee Related CA2320677C (en) 1998-04-27 1998-04-27 Electromagnetic induction coil sensor

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002320677A Expired - Fee Related CA2320677C (en) 1998-04-27 1998-04-27 Electromagnetic induction coil sensor

Country Status (1)

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CA (2) CA2235879C (en)

Also Published As

Publication number Publication date
CA2235879C (en) 2002-02-05
CA2320677C (en) 2003-01-21
CA2320677A1 (en) 1999-10-27

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