GB1249625A - Improvements relating to the detection of instability in sloping surfaces - Google Patents

Improvements relating to the detection of instability in sloping surfaces

Info

Publication number
GB1249625A
GB1249625A GB3877267A GB3877267A GB1249625A GB 1249625 A GB1249625 A GB 1249625A GB 3877267 A GB3877267 A GB 3877267A GB 3877267 A GB3877267 A GB 3877267A GB 1249625 A GB1249625 A GB 1249625A
Authority
GB
United Kingdom
Prior art keywords
borehole
chain
components
component
earth
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
GB3877267A
Inventor
Thomas Thorne Walters
Stanley John Collins
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.)
SOIL MECHANICS Ltd
Original Assignee
SOIL MECHANICS Ltd
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 SOIL MECHANICS Ltd filed Critical SOIL MECHANICS Ltd
Priority to GB3877267A priority Critical patent/GB1249625A/en
Publication of GB1249625A publication Critical patent/GB1249625A/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
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

1,249,625. Measuring borehole inclination electrically. SOIL MECHANICS Ltd. Feb. 24, 1969 [Nov.23, 1967], No.38772/67. Heading G1N. A borehole inclinometer to measure differential slippage of earth strata comprises a chain of inductive transducers, 10, which chain is centred in an initially vertical borehole 4, by springs 18, so that earth movement imposes a curvature on the chain. The transducer comprises a rigid rod, 6, connected by a rigid bar, 12, to a coaxial component 11, the disposition of which component is sensed by quadrilaterally disposed components 14 inductively coupled to that, 11. The components 14 are arranged in two pairs to sense displacement along each of two perpendicular axes normal to that of the borehole. A signal from the transducer is fed to terminal equipment 15 at the mouth of the borehole by means of wires 16 which signal is decoded to provide a reading of the angular displacement of the axis of a rod relative to that of an adjacent one. Such signals are summed to indicate the overall bore curvature and hence the extent of earth slippage. The component 11 is flexibly connected to the adjacent rod by a flexible bar, 13, or, Fig. 3, (not shown), by two rigid bars (13a) and a universal joint (17). The components 14 are supported on a tubular extension, 8, which is joined to that, 7, by a flexible bellows 9. Each transducer includes two ferrite pot cores.
GB3877267A 1967-11-23 1967-11-23 Improvements relating to the detection of instability in sloping surfaces Expired GB1249625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3877267A GB1249625A (en) 1967-11-23 1967-11-23 Improvements relating to the detection of instability in sloping surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3877267A GB1249625A (en) 1967-11-23 1967-11-23 Improvements relating to the detection of instability in sloping surfaces

Publications (1)

Publication Number Publication Date
GB1249625A true GB1249625A (en) 1971-10-13

Family

ID=10405602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3877267A Expired GB1249625A (en) 1967-11-23 1967-11-23 Improvements relating to the detection of instability in sloping surfaces

Country Status (1)

Country Link
GB (1) GB1249625A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992927A (en) * 1975-08-11 1976-11-23 Iowa State University Research Foundation, Inc. Soil movement detection apparatus
FR2730005A1 (en) * 1995-01-27 1996-08-02 Antea Inclinometer for measuring inclination of parts of drill shaft
CN104567646A (en) * 2015-01-18 2015-04-29 蒋梦 Connecting rod type displacement monitor
CN108729904A (en) * 2018-06-26 2018-11-02 中国矿业大学(北京) A kind of novel fixation type inclinometer monitoring unit and implementation method
CN111928766A (en) * 2020-10-14 2020-11-13 南京擅水科技有限公司 Slope displacement monitoring device
CN114922155A (en) * 2022-07-21 2022-08-19 应急管理部国家自然灾害防治研究院 Soil layer drilling device for detecting deep slip surface of side slope

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992927A (en) * 1975-08-11 1976-11-23 Iowa State University Research Foundation, Inc. Soil movement detection apparatus
FR2730005A1 (en) * 1995-01-27 1996-08-02 Antea Inclinometer for measuring inclination of parts of drill shaft
CN104567646A (en) * 2015-01-18 2015-04-29 蒋梦 Connecting rod type displacement monitor
CN104567646B (en) * 2015-01-18 2015-12-02 蒋梦 A kind of link-type displacement monitor
CN108729904A (en) * 2018-06-26 2018-11-02 中国矿业大学(北京) A kind of novel fixation type inclinometer monitoring unit and implementation method
CN111928766A (en) * 2020-10-14 2020-11-13 南京擅水科技有限公司 Slope displacement monitoring device
CN111928766B (en) * 2020-10-14 2021-04-02 福州堆栈科技有限公司 Slope displacement monitoring device
CN114922155A (en) * 2022-07-21 2022-08-19 应急管理部国家自然灾害防治研究院 Soil layer drilling device for detecting deep slip surface of side slope
CN114922155B (en) * 2022-07-21 2022-09-23 应急管理部国家自然灾害防治研究院 Soil layer drilling device for detecting deep slip surface of side slope

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