FR2468921B1 - IMPROVEMENTS IN PROCESSES AND APPARATUSES FOR DETERMINING THE CONDITIONS AND THE HOMOGENEITY OF THE STRUCTURE OF A COAL Vein - Google Patents

IMPROVEMENTS IN PROCESSES AND APPARATUSES FOR DETERMINING THE CONDITIONS AND THE HOMOGENEITY OF THE STRUCTURE OF A COAL Vein

Info

Publication number
FR2468921B1
FR2468921B1 FR8019297A FR8019297A FR2468921B1 FR 2468921 B1 FR2468921 B1 FR 2468921B1 FR 8019297 A FR8019297 A FR 8019297A FR 8019297 A FR8019297 A FR 8019297A FR 2468921 B1 FR2468921 B1 FR 2468921B1
Authority
FR
France
Prior art keywords
homogeneity
apparatuses
processes
determining
conditions
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.)
Expired
Application number
FR8019297A
Other languages
French (fr)
Other versions
FR2468921A1 (en
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.)
ConocoPhillips Co
Original Assignee
Conoco Inc
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 Conoco Inc filed Critical Conoco Inc
Publication of FR2468921A1 publication Critical patent/FR2468921A1/en
Application granted granted Critical
Publication of FR2468921B1 publication Critical patent/FR2468921B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Amplifiers (AREA)
FR8019297A 1979-11-02 1980-09-05 IMPROVEMENTS IN PROCESSES AND APPARATUSES FOR DETERMINING THE CONDITIONS AND THE HOMOGENEITY OF THE STRUCTURE OF A COAL Vein Expired FR2468921B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9058479A 1979-11-02 1979-11-02

Publications (2)

Publication Number Publication Date
FR2468921A1 FR2468921A1 (en) 1981-05-08
FR2468921B1 true FR2468921B1 (en) 1985-08-23

Family

ID=22223427

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8019297A Expired FR2468921B1 (en) 1979-11-02 1980-09-05 IMPROVEMENTS IN PROCESSES AND APPARATUSES FOR DETERMINING THE CONDITIONS AND THE HOMOGENEITY OF THE STRUCTURE OF A COAL Vein

Country Status (8)

Country Link
JP (1) JPS5667778A (en)
AU (1) AU518913B2 (en)
CA (1) CA1182547A (en)
DE (1) DE3037325C2 (en)
FR (1) FR2468921B1 (en)
GB (1) GB2061658B (en)
PL (1) PL131681B1 (en)
ZA (1) ZA805261B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU580077B2 (en) * 1985-04-03 1988-12-22 Stolar, Inc. Electromagnetic instruments and survey procedures for imaging structure in coal seams
GB2304483B (en) * 1995-08-18 2000-03-29 London Electricity Plc System for and method of determining the location of an object in a medium
RU2138064C1 (en) * 1998-10-06 1999-09-20 Кисляков Юрий Вячеславович Gear for under-surface radar sounding
CN103809205B (en) * 2014-02-27 2015-03-11 中国矿业大学(北京) Travel time data fast collecting method for geological radar wave velocity chromatography prospecting
CN103969691A (en) * 2014-04-30 2014-08-06 安徽理工大学 Mine working face detection system and method
CN113550791B (en) * 2021-07-15 2024-02-09 陕西麟北煤业开发有限责任公司 Coal seam roof separation water detection method for coal mine control management

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200597A (en) * 1958-04-30 1959-12-22 Method and device for the geological and mineralogical exploration of the surface layers of the soil
DE1208090B (en) * 1964-02-15 1965-12-30 Dr Helmut Roeschlau Process and arrangement for continuous measurement of the fill level in bunkers and silos
US3440523A (en) * 1965-04-02 1969-04-22 Inst Francais Du Petrole Method and apparatus for electromagnetic determination of the position of boundaries of and discontinuities in a geological formation
FR1519514A (en) * 1965-04-16 1968-04-05 Inst Francais Du Petrole Method for measuring the lateral extent of a deposit and logging probe for its implementation
FR2041016A1 (en) * 1969-05-14 1971-01-29 Inst Francais Du Petrole
US3831173A (en) * 1969-12-17 1974-08-20 Massachusetts Inst Technology Ground radar system
US3806795A (en) * 1972-01-03 1974-04-23 Geophysical Survey Sys Inc Geophysical surveying system employing electromagnetic impulses
US4008469A (en) * 1974-08-06 1977-02-15 Terrestrial Systems, Incorporated Signal processing in short-pulse geophysical radar system
US4072942A (en) * 1976-02-20 1978-02-07 Calspan Corporation Apparatus for the detection of buried objects
US4150576A (en) * 1977-10-25 1979-04-24 Energy And Minerals Research Co. Mine roof and wall inspection apparatus and method

Also Published As

Publication number Publication date
DE3037325C2 (en) 1987-05-07
ZA805261B (en) 1981-09-30
JPS5667778A (en) 1981-06-08
FR2468921A1 (en) 1981-05-08
AU6141280A (en) 1981-05-14
GB2061658B (en) 1984-08-22
GB2061658A (en) 1981-05-13
CA1182547A (en) 1985-02-12
PL227596A1 (en) 1981-06-19
AU518913B2 (en) 1981-10-29
PL131681B1 (en) 1984-12-31
DE3037325A1 (en) 1981-05-07

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Legal Events

Date Code Title Description
ST Notification of lapse