GB1312764A - Borehole and surface strain transducer - Google Patents

Borehole and surface strain transducer

Info

Publication number
GB1312764A
GB1312764A GB1312764DA GB1312764A GB 1312764 A GB1312764 A GB 1312764A GB 1312764D A GB1312764D A GB 1312764DA GB 1312764 A GB1312764 A GB 1312764A
Authority
GB
United Kingdom
Prior art keywords
borehole
strain
gauges
march
gripped
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
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.)
Talbott A C
Original Assignee
Talbott A C
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 Talbott A C filed Critical Talbott A C
Publication of GB1312764A publication Critical patent/GB1312764A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/006—Measuring wall stresses in the borehole

Abstract

1312764 Earth stress transducers A C TALBOTT 6 March 1972 [11 March 1971] 6547/71 Heading G1N Apparatus for measuring stresses in earth or concrete comprise a strain gauge transducer which is to be located in a borehole, consisting of a cylindrical, expandable plug c, Fig.1, gripped between rigid end plates a, a, f and carrying resistance strain gauges 1, 4 on its circumferential surface. The unit is located in the borehole and nut g tightened to increase the diameter of the plug c, whereby the strain gauges 1, 4 are effectively gripped by the wall of the borehole. The gauges are oriented to measure circumferential and axial strain. An additional strain gauge element 5 is mounted on an unstrained end plate k to allow compensation for temperature variations.
GB1312764D 1971-03-11 1971-03-11 Borehole and surface strain transducer Expired GB1312764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB654771 1971-03-11

Publications (1)

Publication Number Publication Date
GB1312764A true GB1312764A (en) 1973-04-04

Family

ID=9816489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1312764D Expired GB1312764A (en) 1971-03-11 1971-03-11 Borehole and surface strain transducer

Country Status (1)

Country Link
GB (1) GB1312764A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444058A (en) * 1982-05-28 1984-04-24 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for determining tensile strength
EP0344926A1 (en) * 1988-05-06 1989-12-06 Eti Explosives Material stress monitor
CN104236446A (en) * 2014-05-08 2014-12-24 珠海市泰德企业有限公司 Drilling multi-component strain measurement head
CN108414129A (en) * 2018-04-02 2018-08-17 长江水利委员会长江科学院 The direct patch crustal stress of half backpack body releases test device and method
CN113931612A (en) * 2021-09-29 2022-01-14 中国科学院武汉岩土力学研究所 Stress data test acquisition system and method suitable for local wall stress relief
CN114485380A (en) * 2022-02-24 2022-05-13 应急管理部国家自然灾害防治研究院 Indoor simulation self-checking device of component type drilling strain gauge

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444058A (en) * 1982-05-28 1984-04-24 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for determining tensile strength
EP0344926A1 (en) * 1988-05-06 1989-12-06 Eti Explosives Material stress monitor
US4962668A (en) * 1988-05-06 1990-10-16 Preston Christoper J Material stress monitor
AU611020B2 (en) * 1988-05-06 1991-05-30 Eti Explosives Technologies International (Canada), Ltd. Material stress monitor
CN104236446A (en) * 2014-05-08 2014-12-24 珠海市泰德企业有限公司 Drilling multi-component strain measurement head
CN108414129A (en) * 2018-04-02 2018-08-17 长江水利委员会长江科学院 The direct patch crustal stress of half backpack body releases test device and method
CN108414129B (en) * 2018-04-02 2023-07-14 长江水利委员会长江科学院 Device and method for testing relief of direct patch ground stress of semi-enclosure
CN113931612A (en) * 2021-09-29 2022-01-14 中国科学院武汉岩土力学研究所 Stress data test acquisition system and method suitable for local wall stress relief
CN114485380A (en) * 2022-02-24 2022-05-13 应急管理部国家自然灾害防治研究院 Indoor simulation self-checking device of component type drilling strain gauge

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Legal Events

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