GB1189421A - Measurement of Ground Slippage - Google Patents

Measurement of Ground Slippage

Info

Publication number
GB1189421A
GB1189421A GB550168A GB550168A GB1189421A GB 1189421 A GB1189421 A GB 1189421A GB 550168 A GB550168 A GB 550168A GB 550168 A GB550168 A GB 550168A GB 1189421 A GB1189421 A GB 1189421A
Authority
GB
United Kingdom
Prior art keywords
rod
bore
measuring
layer
tiltmeter
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
GB550168A
Inventor
Brian Openshaw Skipp
Kenneth Reginald Early
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 EQUIPMENT Ltd
Original Assignee
SOIL MECHANICS EQUIPMENT 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 EQUIPMENT Ltd filed Critical SOIL MECHANICS EQUIPMENT Ltd
Priority to GB550168A priority Critical patent/GB1189421A/en
Publication of GB1189421A publication Critical patent/GB1189421A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth materials
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18Special adaptations of signalling or alarm devices
    • E21F17/185Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Remote Sensing (AREA)
  • Medicinal Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

1,189,421. Measuring ground slippage. SOIL MECHANICS (EQUIPMENT) Ltd. Jan. 24, 1969 [Feb. 2, 1968], No. 5501/68. Headings G1N and G1S. A method of measuring the movement of an upper layer 2 of ground which may be subject to slipping over a lower layer 3 comprises placing a bendable rod 7 so that it extends downwards through the upper layer and has its lower end firmly fixed with respect to the lower layer and measuring the angular deflection of the upper end of the rod after a period of time in which the rod has bent as its upper end moves with the moving layer A bore 5 is sunk through the layers 2, 3 and a slip region 4 and a plastics casing 6 is inserted in the bore. The lower end of the rod 7, which may be of steel or a narrow concrete pile, is firmly embedded in the bottom of the bore and the rod extends upwards to a shallow concrete wall 8 at the surface. A steel collar 9 at the top of the casing has a diametral bar 10 which is biased by a spring 11 towards the rod 7. An inclinometer or tiltmeter 12 such as a bubble level containing an electrolyte in which a number of electrodes are immersed is mounted on the upper end of the rod. The electrodes are coupled in a bridge circuit and a cover 13 is provided with a connecter 14 to which cables can be attached for conducting a signal from the tiltmeter to any convenient location.
GB550168A 1968-02-02 1968-02-02 Measurement of Ground Slippage Expired GB1189421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB550168A GB1189421A (en) 1968-02-02 1968-02-02 Measurement of Ground Slippage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB550168A GB1189421A (en) 1968-02-02 1968-02-02 Measurement of Ground Slippage

Publications (1)

Publication Number Publication Date
GB1189421A true GB1189421A (en) 1970-04-29

Family

ID=9797407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB550168A Expired GB1189421A (en) 1968-02-02 1968-02-02 Measurement of Ground Slippage

Country Status (1)

Country Link
GB (1) GB1189421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102519411A (en) * 2011-10-28 2012-06-27 中国矿业大学(北京) Roadway roof displacement precise detecting device and detecting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102519411A (en) * 2011-10-28 2012-06-27 中国矿业大学(北京) Roadway roof displacement precise detecting device and detecting method

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Legal Events

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