AU4868497A - Anchoring device with strain measurement system - Google Patents

Anchoring device with strain measurement system

Info

Publication number
AU4868497A
AU4868497A AU48684/97A AU4868497A AU4868497A AU 4868497 A AU4868497 A AU 4868497A AU 48684/97 A AU48684/97 A AU 48684/97A AU 4868497 A AU4868497 A AU 4868497A AU 4868497 A AU4868497 A AU 4868497A
Authority
AU
Australia
Prior art keywords
anchoring
anchoring device
measurement system
strain measurement
grid
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.)
Abandoned
Application number
AU48684/97A
Inventor
Gunter Borm
Cornelia Schmidt-Hattenberger
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.)
GeoForschungsZentrum Potsdam
Original Assignee
GeoForschungsZentrum Potsdam
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 GeoForschungsZentrum Potsdam filed Critical GeoForschungsZentrum Potsdam
Publication of AU4868497A publication Critical patent/AU4868497A/en
Abandoned legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02195—Refractive index modulation gratings, e.g. Bragg gratings characterised by means for tuning the grating
    • G02B6/022—Refractive index modulation gratings, e.g. Bragg gratings characterised by means for tuning the grating using mechanical stress, e.g. tuning by compression or elongation, special geometrical shapes such as "dog-bone" or taper

Abstract

An anchoring device has an anchoring rod (10), an anchoring head and at least one frictionally connected optical fibre (11) with at least one integrated Bragg grid (120-124) for measuring strains and/or forces in the walls of cavities. A shift in a characteristic grid reflection wavelength can be sensed with each Bragg grid (120-124). Buckling, elongation or deformation of the anchoring rod and thus force and strain alterations and/or displacements in a cavity wall can be derived therefrom.
AU48684/97A 1996-10-25 1997-10-22 Anchoring device with strain measurement system Abandoned AU4868497A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19644455 1996-10-25
DE19644455 1996-10-25
PCT/EP1997/005835 WO1998019044A1 (en) 1996-10-25 1997-10-22 Anchoring device with strain measurement system

Publications (1)

Publication Number Publication Date
AU4868497A true AU4868497A (en) 1998-05-22

Family

ID=7810018

Family Applications (1)

Application Number Title Priority Date Filing Date
AU48684/97A Abandoned AU4868497A (en) 1996-10-25 1997-10-22 Anchoring device with strain measurement system

Country Status (5)

Country Link
EP (1) EP0934454B1 (en)
AT (1) ATE201745T1 (en)
AU (1) AU4868497A (en)
DE (1) DE59703692D1 (en)
WO (1) WO1998019044A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19852455C2 (en) * 1998-11-13 2003-12-24 Geoforschungszentrum Potsdam Anchoring device with seismic sensor
DE19913113C2 (en) * 1999-03-23 2002-08-08 Geso Ges Fuer Sensorik Geotech Device for measuring mechanical, elastic to plastic deformations of bars
US8075498B2 (en) 2005-03-04 2011-12-13 Endosense Sa Medical apparatus system having optical fiber load sensing capability
EP2363073B1 (en) 2005-08-01 2015-10-07 St. Jude Medical Luxembourg Holding S.à.r.l. Medical apparatus system having optical fiber load sensing capability
US8567265B2 (en) 2006-06-09 2013-10-29 Endosense, SA Triaxial fiber optic force sensing catheter
GB2439993A (en) * 2006-07-06 2008-01-16 Univ Belfast Sensing strain in an elongate reinforcing bar using an optical fibre sensor with integrated Bragg gratings
US8622935B1 (en) 2007-05-25 2014-01-07 Endosense Sa Elongated surgical manipulator with body position and distal force sensing
EP2248951B1 (en) * 2009-05-08 2014-01-15 Lechner, Peter Method and device for determining the axial force progression in a pressure-grouted anchor
JP6177230B2 (en) 2011-04-14 2017-08-09 セント・ジュード・メディカル・インターナショナル・ホールディング・エスエーアールエルＳｔ． Ｊｕｄｅ Ｍｅｄｉｃａｌ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｈｏｌｄｉｎｇ Ｓ．ａ，ｒ．ｌ． Small force sensor for catheter
CN102720515A (en) * 2012-06-29 2012-10-10 山东大学 Fiber bragg grating prestress measurement anchor rod and application method thereof
WO2017118949A1 (en) 2016-01-07 2017-07-13 St. Jude Medical International Holding S.À R.L. Medical device with multi-core fiber for optical sensing
CN106441642B (en) * 2016-11-24 2022-03-29 贵州大学 Anchor rod stress monitor based on ZigBee technology and application method thereof
CN108252731B (en) * 2018-03-05 2024-03-22 北京科技大学 Telescopic composite anchoring system based on capacitive stress measurement
CN116950701B (en) * 2023-05-06 2024-03-26 中山大学 Rock-soil anchoring measurement integrated monitoring device

Also Published As

Publication number Publication date
ATE201745T1 (en) 2001-06-15
WO1998019044A1 (en) 1998-05-07
EP0934454A1 (en) 1999-08-11
DE59703692D1 (en) 2001-07-05
EP0934454B1 (en) 2001-05-30

Similar Documents

Publication Publication Date Title
AU4868497A (en) Anchoring device with strain measurement system
CA2288746A1 (en) Distributed sensing system
WO1999032911A8 (en) Sensor for measuring strain
WO2002019898A3 (en) Multi-parameter fiber optic probes
GB2317008B (en) A fibre optic interferometric strain gauge assembly
MXPA02003824A (en) Flexible fiber optic microbend device, sensors, and method of use.
AU8167098A (en) Bourdon tube pressure gauge with integral optical strain sensors for measuring tension or compressive strain
GB9626099D0 (en) Distributed strain and temperature measuring system
EP0694756A3 (en) Elongation measurement using a laser non-contact extensometer
EP0713084A3 (en) Optical micro-system of rosette strain gauge types with dielectrical guides for measuring a longitudinal strain of a planar structure
ATE133548T1 (en) FETAL PROBE
FR2615279B1 (en) DISPLACEMENT SENSOR WITH OFFSET FIBER OPTICS
CA2319347A1 (en) Accelerometer featuring fiber optic bragg grating sensor for providing multiplexed multi-axis acceleration sensing
WO1999057589A8 (en) Creep-resistant optical fiber attachment
MY131405A (en) Fiber optic force sensor
FI963625A0 (en) Fiber optic strain sensors and their preparation
EP0629835A3 (en) Strain measuring instrument.
AU7317596A (en) Strain gauge
EP0978714A3 (en) Load cell
AU2886297A (en) Method and device for checking the solidity of vertically anchored masts
GB8921301D0 (en) A stress gauge force sensing device
GB2353867A (en) Passive peak deflection sensor
CA2076579A1 (en) Fiber-optic sensor with first and second bimode fibers
EP0903599A3 (en) Optical fiber fixing member, optical fiber array, optical waveguide module and method of measuring dimensional accuracy of optical fiber fixing member
KR100387494B1 (en) Device for measuring spline