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1. WO1984002771 - DEVICE FOR DETERMINING A MODIFICATION OF THE RELATIVE DISTANCE BETWEEN TWO MEASUREMENT POINTS AND UTILIZATION THEREOF

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Publication Number WO/1984/002771
Publication Date 19.07.1984
International Application No. PCT/CH1984/000007
International Filing Date 13.01.1984
IPC
E21F 17/18 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
17Methods or devices for use in mines or tunnels, not covered elsewhere
18Special adaptations of signalling or alarm devices
G01B 11/16 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
16for measuring the deformation in a solid, e.g. optical strain gauge
G01D 5/28 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26using optical means, i.e. using infra-red, visible or ultra-violet light
28with deflection of beams of light, e.g. for direct optical indication
G01S 17/46 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
46Indirect determination of position data
CPC
E21F 17/185
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
17Methods or devices for use in mines or tunnels, not covered elsewhere
18Special adaptations of signalling or alarm devices
185Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
G01B 11/16
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
16for measuring the deformation in a solid, e.g. optical strain gauge
G01D 5/28
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
28with deflection of beams of light, e.g. for direct optical indication
G01S 17/46
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
46Indirect determination of position data
Applicants
Inventors
Priority Data
null30.12.1899null
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(EN) DEVICE FOR DETERMINING A MODIFICATION OF THE RELATIVE DISTANCE BETWEEN TWO MEASUREMENT POINTS AND UTILIZATION THEREOF
(FR) DISPOSITIF POUR DETERMINER UNE MODIFICATION DE DISTANCE RELATIVE ENTRE DEUX POINTS DE MESURE ET SON UTILISATION
Abstract
(EN)
It is known that in cavities structures, the walls often need a long time to stabilize. In order to determine whether rock displacements may occur and to which extend they may occur, measurement instruments are incorporated into the walls (W1, W2) at opposite locations (I, II). A cardan suspended pendulum (1) has a light source (5) at its bearing point and a light receiver (3) at its pendulum mass (2). On the opposite wall (W2) a mirror (4) is arranged with an inclination alpha with respect to the vertical. A displacement of the mirror over Tx or TZ provides an indication TZ to the light receiver (3).
(FR)
Dans les constructions à cavités, il est connu que les parois ont souvent besoin d"un temps assez long pour se stabiliser. Afin de déterminer si des déplacements de roches peuvent se produire et dans quelle mesure ils peuvent se produire, des instruments de mesure sont encastrés dans des parois (W1, W2) en des endroits qui se font face (I, II). Un pendule (1) suspendu à la Cardan possède une source lumineuse (5) à son point d"appui et un récepteur de lumière (3) à sa masse de pendule (2). Sur la paroi opposée (W2) est disposé un miroir (4) avec une inclinaison alpha par rapport à la verticale. Un déplacement du miroir sur Tx ou TZ provoque une indication TZ au récepteur de lumière (3).
Also published as
EP0132260
JP1985500347
US4697921
Latest bibliographic data on file with the International Bureau
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