GB1540018A - Apparatus for measuring variations in distances - Google Patents

Apparatus for measuring variations in distances

Info

Publication number
GB1540018A
GB1540018A GB2321077A GB2321077A GB1540018A GB 1540018 A GB1540018 A GB 1540018A GB 2321077 A GB2321077 A GB 2321077A GB 2321077 A GB2321077 A GB 2321077A GB 1540018 A GB1540018 A GB 1540018A
Authority
GB
United Kingdom
Prior art keywords
distances
measuring variations
variations
measuring
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
GB2321077A
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.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
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 Charbonnages de France CDF filed Critical Charbonnages de France CDF
Publication of GB1540018A publication Critical patent/GB1540018A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0011—Arrangements for eliminating or compensation of measuring errors due to temperature or weight
    • G01B5/0014—Arrangements for eliminating or compensation of measuring errors due to temperature or weight due to temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
GB2321077A 1976-06-04 1977-06-01 Apparatus for measuring variations in distances Expired GB1540018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7616925A FR2353827A1 (en) 1976-06-04 1976-06-04 HIGH PRECISION CONVERGENCE MEASURER

Publications (1)

Publication Number Publication Date
GB1540018A true GB1540018A (en) 1979-02-07

Family

ID=9173999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2321077A Expired GB1540018A (en) 1976-06-04 1977-06-01 Apparatus for measuring variations in distances

Country Status (4)

Country Link
BE (1) BE855277A (en)
ES (1) ES459451A1 (en)
FR (1) FR2353827A1 (en)
GB (1) GB1540018A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2479529A1 (en) * 2011-01-24 2012-07-25 Agisco S.r.l. Deformation meter with compensation in respect of thermal variations
CN108489368A (en) * 2018-03-23 2018-09-04 四川农业大学 A kind of tunnel wall rock deformation high-precision the Real-Time Measuring device and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2728651C2 (en) * 1977-06-24 1981-09-17 Siempelkamp Gießerei GmbH & Co, 4150 Krefeld Method for monitoring a cylindrical nuclear reactor pressure vessel and devices for carrying out such a method
FR2505482A1 (en) * 1981-05-05 1982-11-12 Snecma Measurement system for expansion of turbojet - has parallel interconnected shafts with defined coefficients of expansion coupled to displacement sensor
FR2731513B1 (en) * 1995-03-09 1997-08-29 Gautheron Christophe Philippe LINEAR AND ANGULAR MEASUREMENTS OF THE RELATIVE POSITION OF TWO POINTS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2479529A1 (en) * 2011-01-24 2012-07-25 Agisco S.r.l. Deformation meter with compensation in respect of thermal variations
CN108489368A (en) * 2018-03-23 2018-09-04 四川农业大学 A kind of tunnel wall rock deformation high-precision the Real-Time Measuring device and method

Also Published As

Publication number Publication date
ES459451A1 (en) 1978-05-01
BE855277A (en) 1977-12-01
FR2353827B1 (en) 1979-10-12
FR2353827A1 (en) 1977-12-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee