GB1190976A - Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole - Google Patents

Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole

Info

Publication number
GB1190976A
GB1190976A GB3447067A GB3447067A GB1190976A GB 1190976 A GB1190976 A GB 1190976A GB 3447067 A GB3447067 A GB 3447067A GB 3447067 A GB3447067 A GB 3447067A GB 1190976 A GB1190976 A GB 1190976A
Authority
GB
United Kingdom
Prior art keywords
borehole
cylinder
envelope
soil
wall
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
GB3447067A
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.)
NAC DE ENGENHARIA CIVIL LAB
Original Assignee
NAC DE ENGENHARIA CIVIL LAB
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 NAC DE ENGENHARIA CIVIL LAB filed Critical NAC DE ENGENHARIA CIVIL LAB
Publication of GB1190976A publication Critical patent/GB1190976A/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

1,190,976. Testing hardness of soil. LABORATORIO NACIONAL DE ENGENHARIA CIVIL. July 26, 1967. [July 29, 1966], No.34470/67. Heading G1N. The hardness of the soil comprising the wall of a borehole is determined by applying pressure to the wall and measuring the change in diameter. A steel cylinder 1, covered with a rubber envelope 2 whose ends are sealed into the cylinder, is axially lowered into the borehole and fluid under pressure introduced between the rubber envelope and the cylinder via inlet 7, causing the envelope to apply pressure to the wall of the borehole. The resulting diameter of the borehole is measured by a differential transformer 10 with diametrically opposed biased rods 11 attached to the core and windings respectively of the transformer. Four transformers are used, displaced axially along the unit, progressively displaced angularly by 45‹ . The air pressure inside the cylinder 1 is controlled via pipe 6 to operate a relief valve 5 for the fluidpressure between the envelope and cylinder, and to retract the rods 11 for moving the unit along the borehole.
GB3447067A 1966-07-29 1967-07-26 Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole Expired GB1190976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT4617866 1966-07-29

Publications (1)

Publication Number Publication Date
GB1190976A true GB1190976A (en) 1970-05-06

Family

ID=20081642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3447067A Expired GB1190976A (en) 1966-07-29 1967-07-26 Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole

Country Status (4)

Country Link
DE (1) DE1298479B (en)
ES (1) ES343523A1 (en)
GB (1) GB1190976A (en)
SE (1) SE352688B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216205A (en) * 2012-04-18 2013-07-24 北京探矿工程研究所 Adjustable orifice sealing device for geological drilling

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796091A (en) * 1972-10-02 1974-03-12 S Serata Borehole stress-property measuring system
IT1023139B (en) * 1974-10-31 1978-05-10 Marchetti Silvano DEVICE WITH EXPANDABLE FLAT MEMBRANES FOR ON SITE MEASUREMENT OF THE MODULE OF DEFORMABILITY OF SOILS NOT REQUIRING THE EXECUTION OF THE PROBING HOLES
DE2843893C2 (en) * 1978-10-07 1982-06-16 Bergwerksverband Gmbh, 4300 Essen Double pressure measuring probe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212015B (en) * 1964-04-30 1966-03-10 Electricite De France Device for testing the mechanical-static behavior of a material at different depths of a borehole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216205A (en) * 2012-04-18 2013-07-24 北京探矿工程研究所 Adjustable orifice sealing device for geological drilling

Also Published As

Publication number Publication date
DE1298479B (en) 1969-07-03
ES343523A1 (en) 1968-07-16
SE352688B (en) 1973-01-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees