WO2011134028A1 - Procédé et dispositif de mesure des caractéristiques mécaniques du sol - Google Patents

Procédé et dispositif de mesure des caractéristiques mécaniques du sol Download PDF

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Publication number
WO2011134028A1
WO2011134028A1 PCT/BE2011/000026 BE2011000026W WO2011134028A1 WO 2011134028 A1 WO2011134028 A1 WO 2011134028A1 BE 2011000026 W BE2011000026 W BE 2011000026W WO 2011134028 A1 WO2011134028 A1 WO 2011134028A1
Authority
WO
WIPO (PCT)
Prior art keywords
hypodermic needle
cable
membrane cell
ground
revolver
Prior art date
Application number
PCT/BE2011/000026
Other languages
English (en)
French (fr)
Other versions
WO2011134028A8 (fr
Inventor
Khalil Fahny Iskander
Original Assignee
Khalil Fahny Iskander
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 Khalil Fahny Iskander filed Critical Khalil Fahny Iskander
Priority to CA2792313A priority Critical patent/CA2792313C/fr
Priority to DE112011101504T priority patent/DE112011101504T5/de
Priority to CN201180031778.3A priority patent/CN103201434B/zh
Priority to EP11745468.6A priority patent/EP2563974B1/fr
Publication of WO2011134028A1 publication Critical patent/WO2011134028A1/fr
Priority to GBGB1215550.3A priority patent/GB201215550D0/en
Publication of WO2011134028A8 publication Critical patent/WO2011134028A8/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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

Definitions

  • the present invention relates to a method and a device for measuring mechanical characteristics of the soil.
  • the device is of the membrane cell type associated with a piezometer constituted by a hypodermic needle menu of a sensor.
  • Various membrane devices are used to study the mechanical properties of the soil including: pressuremeter test, dilatometric test, pressiometer cone test, and inclined piezometer membrane device ...
  • the method of measuring mechanical characteristics of the ground by the aforementioned apparatuses agrees on the principle independent of the method of placing the apparatus.
  • the methods of placement are either a device with a prior drilling or a driving device or auto driller.
  • the process is carried out by supplying the membrane cell with a liquid or gas under pressure. Increasing the liquid pressure or gas causes the membrane cell to swell. The bearing capacity of the soil is deduced from the relationship between the pressure exerted and the swelling at the central level of the membrane cell.
  • the device of the inclined piezometer membrane apparatus makes it possible to drive a piezometer into the ground in the vicinity and at the central level of the membrane cell by an inclined piston. But it takes a very strong load to overcome the high soil resistance that prevents the easy insertion of the piston operating tube and could damage other tubes in the system.
  • FIG. 1 represents the device of the invention which comprises the following
  • the tube (10) is provided with a guide (3) to ensure the position of the tip of the hypodermic needle (5) facing the center of the hole (2).
  • the node (4) is for holding the hypodermic needle (5) at measurement level (6) during the recording of pore pressure measurement values.
  • the hypodermic needle (5) which is the bullet of the revolver (8) menu of a sensor to measure the interstitial pressure at (6) of measurements in the vicinity of the membrane cell (7).
  • the vertical tube (10) of smaller diameter than the tube (9) comprises the inclined revolver (8).
  • the bullet of the revolver (8) is the hypodermic needle (5).
  • the vertical tube acting as an intermediate between the membrane cell (7) and the ground surface and comprises the tube (10) which comprises the inclined revolver (8). All cables and pipes pass through this tube (9).
  • the tube (10) comprises the inclined revolver (8).
  • the shooting of the hypodermic needle (5) towards the level (6) of measurements is performed by pulling the cable (14).
  • This cable (17) is intended to hold the hypodermic needle (5) at measurement level (6) when the needle (5) is projected, thanks to a knot (4) on the cable (17).
  • the cable (17) also serves to remove the hypodermic needle (5) to its initial position in the revolver (8) by mechanical or manual removal by the cable (17).
  • the method comprises driving a membrane cell (7) into the ground or by drilling into which a liquid or a gas is introduced under pressure to measure the increase in volume of the membrane cell (7) as a function of the pressure exerted.
  • the method according to the invention consists in drawing from the ground, from a revolver (8), in a direction inclined from the part just above the membrane cell (7), a hypodermic needle (5) menu from a sensor to the central level (6) of the maximum deformations of the membrane cell (7) and to measure the change in the the value of the interstitial pressure at the central level (6) and in the vicinity of the membrane cell (7) as a function of the pressure in the membrane cell (7).
  • the device for implementing the method is of the type comprising a vertical tube (9) comprising a membrane cell (7), and consists of introducing into the tube
  • a vertical tube (10) of smaller diameter to bear on support (1) and provided with a guide (3), to ensure the tip of a hypodermic needle (5) facing the hole center (2) covered by rubber.
  • the tube (10) comprises an inclined revolver (8) with respect to the axis of the vertical tube (9) serving intermediate between the membrane cell (7) and the ground surface.
  • the firing of the hypodermic needle (5) is performed by pulling a cable (14) which connects the trigger (12) of the revolver (8) to the surface of the ground.
  • the hypodermic needle sensor (5) is connected by a cable (16) to a computer (15) for recording the measurement values, and also the needle (5) is connected. by another cable (17) for holding the hypodermic needle (5) in the desired position, when projected, by means of a knot (4) on the cable (17) at a distance from the hypodermic needle ( 5) equal to the length of the path from its initial position to the measurement level (6).
  • the cable (17) is also used to remove the hypodermic needle (5) to its initial position in the revolver (8) by mechanical or manual removal by the cable (17).
  • the end of the needle (5) is fitted by a capsule which sticks and remains in the ground during removal of the hypodermic needle (5) by the cable (17) to prevent the hypodermic needle (5) from sticks in the ground.
  • the withdrawal of the tube (10) is performed by pulling the cable (11).
  • the measurement process is repeated every meter up to the depth required underground.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Soil Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Geophysics (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Measuring Fluid Pressure (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
PCT/BE2011/000026 2010-04-30 2011-04-29 Procédé et dispositif de mesure des caractéristiques mécaniques du sol WO2011134028A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2792313A CA2792313C (fr) 2010-04-30 2011-04-29 Procede et dispositif de mesure des caracteristiques mecaniques du sol
DE112011101504T DE112011101504T5 (de) 2010-04-30 2011-04-29 Verfahren und Vorrichtung zur Messung der Bodenmechanischen Eigenschaften
CN201180031778.3A CN103201434B (zh) 2010-04-30 2011-04-29 用于测量土地的力学特性的方法和设备
EP11745468.6A EP2563974B1 (fr) 2010-04-30 2011-04-29 Procédé et dispositif de mesure des caractéristiques mécaniques du sol
GBGB1215550.3A GB201215550D0 (en) 2010-04-30 2012-08-30 Method and device for measuring mechanical characteristics of the ground

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2010/0269A BE1019322A3 (fr) 2010-04-30 2010-04-30 Procede et dispositif de mesure des caracteristiques mecaniques du sol.
BE2010/0269 2010-04-30

Publications (2)

Publication Number Publication Date
WO2011134028A1 true WO2011134028A1 (fr) 2011-11-03
WO2011134028A8 WO2011134028A8 (fr) 2012-12-13

Family

ID=43607681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE2011/000026 WO2011134028A1 (fr) 2010-04-30 2011-04-29 Procédé et dispositif de mesure des caractéristiques mécaniques du sol

Country Status (7)

Country Link
EP (1) EP2563974B1 (zh)
CN (1) CN103201434B (zh)
BE (1) BE1019322A3 (zh)
CA (1) CA2792313C (zh)
DE (1) DE112011101504T5 (zh)
GB (1) GB201215550D0 (zh)
WO (1) WO2011134028A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408481A (en) * 1982-03-12 1983-10-11 The United States Of America As Represented By The Secretary Of The Air Force Pore pressure probe assembly and two-stage emplacement thereof
FR2696003A1 (fr) * 1992-09-21 1994-03-25 Iskander Khalil Procédé et dispositif pour mesurer des caractéristiques mécaniques du sol.
WO2005090942A1 (en) * 2004-03-23 2005-09-29 Benthic Geotech Pty Ltd Improved ball penetrometer for soft soils testing
EP1582632A1 (de) * 2004-03-29 2005-10-05 GBM Wiebe Gleisbaumaschinen GmbH Vorrichtung und Verfahren zur Ermittlung des Zustandes des Oberbaus von Schienenwegen, Strassen bzw. Erdschichten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575847B (zh) * 2009-06-02 2011-06-15 中铁第四勘察设计院集团有限公司 有效应力铲

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408481A (en) * 1982-03-12 1983-10-11 The United States Of America As Represented By The Secretary Of The Air Force Pore pressure probe assembly and two-stage emplacement thereof
FR2696003A1 (fr) * 1992-09-21 1994-03-25 Iskander Khalil Procédé et dispositif pour mesurer des caractéristiques mécaniques du sol.
EP0705941A1 (fr) 1992-09-21 1996-04-10 Khalil Fahmy Iskander Appareil à membrane à piezo-incliné
WO2005090942A1 (en) * 2004-03-23 2005-09-29 Benthic Geotech Pty Ltd Improved ball penetrometer for soft soils testing
EP1582632A1 (de) * 2004-03-29 2005-10-05 GBM Wiebe Gleisbaumaschinen GmbH Vorrichtung und Verfahren zur Ermittlung des Zustandes des Oberbaus von Schienenwegen, Strassen bzw. Erdschichten

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LADANYI, B: "Discussion on undrained stress-strain- time behaviour of clay", JOURNAL OF SOIL MECHANICS AND FOUNDATION DIVISION ASCE, vol. 103, no. 8, 1977, pages 933 - 934
THEVANAYAGAM S, CHAMEAU, J.L, G. ALSCHAEFFL, SOME ASPECTS OF PRESSUREMETER TEST INTERPRETATION IN CLAY GEOTECHNIQUE, 1994, pages 319 - 355

Also Published As

Publication number Publication date
DE112011101504T5 (de) 2013-11-28
CA2792313C (fr) 2014-08-19
BE1019322A3 (fr) 2012-06-05
CN103201434A (zh) 2013-07-10
CA2792313A1 (fr) 2011-11-03
CN103201434B (zh) 2015-08-19
WO2011134028A8 (fr) 2012-12-13
EP2563974B1 (fr) 2014-06-11
EP2563974A1 (fr) 2013-03-06
GB201215550D0 (en) 2012-10-17

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