PL131681B1 - Method of determination of condition and homogeneity of structure of coal beds and apparatus therefor - Google Patents

Method of determination of condition and homogeneity of structure of coal beds and apparatus therefor Download PDF

Info

Publication number
PL131681B1
PL131681B1 PL1980227596A PL22759680A PL131681B1 PL 131681 B1 PL131681 B1 PL 131681B1 PL 1980227596 A PL1980227596 A PL 1980227596A PL 22759680 A PL22759680 A PL 22759680A PL 131681 B1 PL131681 B1 PL 131681B1
Authority
PL
Poland
Prior art keywords
output
input
circuit
control
deck
Prior art date
Application number
PL1980227596A
Other languages
English (en)
Polish (pl)
Other versions
PL227596A1 (de
Inventor
Theodore E Moser
James Ch Fowler
Steven D Hale
Julian B Coon
Charles J Schafers
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 PL227596A1 publication Critical patent/PL227596A1/xx
Publication of PL131681B1 publication Critical patent/PL131681B1/pl

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)
PL1980227596A 1979-11-02 1980-10-31 Method of determination of condition and homogeneity of structure of coal beds and apparatus therefor PL131681B1 (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
PL227596A1 PL227596A1 (de) 1981-06-19
PL131681B1 true PL131681B1 (en) 1984-12-31

Family

ID=22223427

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1980227596A PL131681B1 (en) 1979-11-02 1980-10-31 Method of determination of condition and homogeneity of structure of coal beds and apparatus therefor

Country Status (8)

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

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
WO2000020891A1 (fr) * 1998-10-06 2000-04-13 Jury Vyacheslavovich Kislyakov Dispositif de sondage pour radiolocalisation souterraine
CN103809205B (zh) * 2014-02-27 2015-03-11 中国矿业大学(北京) 一种地质雷达波速层析探测的走时数据快速采集方法
CN103969691A (zh) * 2014-04-30 2014-08-06 安徽理工大学 矿井工作面探测系统及方法
CN113550791B (zh) * 2021-07-15 2024-02-09 陕西麟北煤业开发有限责任公司 一种煤矿防治管理的煤层顶板离层水探测方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200597A (fr) * 1958-04-30 1959-12-22 Procédé et dispositif pour l'exploration géologique et minéralogique des couchessuperficielles du sol
DE1208090B (de) * 1964-02-15 1965-12-30 Dr Helmut Roeschlau Verfahren und Anordnung zur kontinuierlichen Messung des Fuellstandes von Bunkern und Silos
FR1519514A (fr) * 1965-04-16 1968-04-05 Inst Francais Du Petrole Méthode de mesure de l'étendue latérale d'un gisement et sonde de diagraphie pour sa mise en oeuvre
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
FR2041016A1 (de) * 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
PL227596A1 (de) 1981-06-19
ZA805261B (en) 1981-09-30
JPS5667778A (en) 1981-06-08
GB2061658B (en) 1984-08-22
AU518913B2 (en) 1981-10-29
DE3037325C2 (de) 1987-05-07
FR2468921A1 (fr) 1981-05-08
CA1182547A (en) 1985-02-12
AU6141280A (en) 1981-05-14
DE3037325A1 (de) 1981-05-07
GB2061658A (en) 1981-05-13
FR2468921B1 (fr) 1985-08-23

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