EP0802286A2 - Bohrverfahren zum Erhalten einer Schlitzwand mit erweitertem Fuss im Boden, Einrichtung zur Durchführung des Verfahrens, und durch das Verfahren erhaltene Schlitzwand - Google Patents

Bohrverfahren zum Erhalten einer Schlitzwand mit erweitertem Fuss im Boden, Einrichtung zur Durchführung des Verfahrens, und durch das Verfahren erhaltene Schlitzwand Download PDF

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Publication number
EP0802286A2
EP0802286A2 EP97400835A EP97400835A EP0802286A2 EP 0802286 A2 EP0802286 A2 EP 0802286A2 EP 97400835 A EP97400835 A EP 97400835A EP 97400835 A EP97400835 A EP 97400835A EP 0802286 A2 EP0802286 A2 EP 0802286A2
Authority
EP
European Patent Office
Prior art keywords
milling drums
chassis
drums
ground
borehole
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.)
Withdrawn
Application number
EP97400835A
Other languages
English (en)
French (fr)
Other versions
EP0802286A3 (de
Inventor
Philippe Lefort
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP0802286A2 publication Critical patent/EP0802286A2/de
Publication of EP0802286A3 publication Critical patent/EP0802286A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits

Definitions

  • the present invention relates to a drilling method for producing an enlarged base bar in the ground, an apparatus for its implementation and the bar thus obtained.
  • bars are foundation supports of substantially rectangular section.
  • Drilling rigs of the type are already known comprising a chassis provided, at its lower part, with milling drums located in the extension of the chassis and driven in rotation to disintegrate the ground as the apparatus sinks into the ground.
  • such an apparatus When in use, such an apparatus is suspended from a lifting device and in particular makes it possible to dig boreholes in order to make bars there by pouring concrete into these boreholes.
  • the present invention aims to propose a drilling method which implements such an apparatus and makes it possible to obtain a bar having high working rates, both in compression and in traction.
  • the subject of the present invention is a method for digging a borehole in the ground in order to produce a bar, according to which a drilling rig is lowered into the ground, comprising a chassis provided, at its lower part, with rotary milling drums, parallel axes of rotation, located in the extension of the chassis, said milling drums having the function of disintegrating the ground as the device is lowered into the ground, characterized in that, when the device has reached a predetermined depth, the milling drums are oriented on one side of the chassis by pivoting about a substantially horizontal pivot axis, perpendicular to the axes of rotation of the milling drums and located in the vicinity of their upper parts, while continuing to descend the device, then the device is raised to said predetermined depth while bringing the milling drums in line with the chassis.
  • the method according to the invention allows for lateral enlargements in the drilling, generally vertical, in which concrete is subsequently poured to obtain the bar.
  • the milling drums are oriented on the other side of the chassis, while continuing to lower the device, then the device is raised to said predetermined depth, while bringing the milling drums in line with the chassis.
  • the descent of the device can be continued while keeping the milling drums in line with the chassis.
  • lateral enlargements can be made at different depths of the borehole.
  • the apparatus is lowered into the ground with its drums inclined over a distance which is at most equal to the height of the apparatus, so that the upper part of the chassis always remains at the inside the straight, and generally vertical, part of the borehole.
  • the present invention also relates to a drilling apparatus allowing the implementation of the method described above.
  • This device is characterized by the fact that its milling drums are capable of being pivoted about a substantially horizontal pivot axis, perpendicular to the axes of rotation of the milling drums and located in the vicinity of their upper parts, so as to be able to exceed on either side of the chassis.
  • the angular movement of the milling drums relative to the chassis is greater than 4 ° and preferably equal to approximately 8 °.
  • - the cutting width of the milling drums, taken perpendicular to their pivot axis, is greater than the width of the chassis, so as to allow the deflection of the bottom of the chassis when the device descends with its milling drums inclined to one side of the chassis.
  • the device comprises sensors making it possible to measure the inclination of the milling drums relative to the chassis.
  • the present invention also relates to a bar comprising at least one lateral projection, obtained by pouring concrete in a borehole produced by implementing the method described above.
  • the drilling rig 1 described in FIG. 1 comprises a chassis 2 suspended by a block 3 from a lifting device (not shown) and provided at its lower part with two pairs of milling drums 4 rotated in the direction indicated by arrows 5, around axes of rotation 8 parallel to each other.
  • the milling drums are supported by a support plate 6, itself articulated on the chassis 2 around an axis 7, substantially horizontal, which is perpendicular to the axes of rotation 8 of the drums 4 and is located in the vicinity of their parts. higher.
  • the milling drums are located in the extension of the chassis 2.
  • the support plate 6 has an angular movement with respect to the chassis of approximately 8 °.
  • Cylinders 9 allow the angular positioning of the support plate relative to the chassis and sensors 10 make it possible to measure the inclination of said support plate, that is to say, milling drums, with respect to the chassis.
  • FIGS. 2 to 5 various stages in the production of a borehole are shown using the apparatus of FIG.
  • the apparatus 1 is lowered into the ground in a substantially vertical direction while keeping the milling drums 4 in the extension of the chassis 2, as shown in FIG. 2.
  • the milling drums 4 are oriented on one side of the chassis by rotating them around the axis 7.
  • the apparatus then begins to progress with its inclined drums 4 while the chassis 2 is still located in the vertical part of the borehole, as can be seen in FIG. 3.
  • a lateral widening 14 is thus hollowed out by the milling drums 4 .
  • chassis has a width less than that of the drums 4 allows it to deviate in the vertical part of the borehole following the drums in the widening 14, while the apparatus continues to descend.
  • the device When the device has reached the position shown in Figure 4, it is reassembled while replacing the milling drums in the extension of the chassis. The device then returns to its position shown in FIG. 2.
  • the dimensions of the widening thus dug can be 3 m high (H) and 1.80 m wide at its base (B) for drilling 80 cm wide (1) in its part current.
  • the milling drums are replaced in the extension of the chassis and the progression of the chassis is continued towards the down to a second depth at which the operations described above are repeated.
  • lateral enlargements 17 are made on one side of the borehole and staggered, that is to say on one side of the borehole at a first depth and on the opposite side to a second depth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
EP97400835A 1996-04-19 1997-04-14 Bohrverfahren zum Erhalten einer Schlitzwand mit erweitertem Fuss im Boden, Einrichtung zur Durchführung des Verfahrens, und durch das Verfahren erhaltene Schlitzwand Withdrawn EP0802286A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604946 1996-04-19
FR9604946A FR2747704B1 (fr) 1996-04-19 1996-04-19 Procede de forage pour realiser une barrette a base elargie dans le sol, appareil pour sa mise en oeuvre et barrette ainsi obtenue

Publications (2)

Publication Number Publication Date
EP0802286A2 true EP0802286A2 (de) 1997-10-22
EP0802286A3 EP0802286A3 (de) 1997-11-05

Family

ID=9491387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400835A Withdrawn EP0802286A3 (de) 1996-04-19 1997-04-14 Bohrverfahren zum Erhalten einer Schlitzwand mit erweitertem Fuss im Boden, Einrichtung zur Durchführung des Verfahrens, und durch das Verfahren erhaltene Schlitzwand

Country Status (2)

Country Link
EP (1) EP0802286A3 (de)
FR (1) FR2747704B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378002A1 (de) * 2010-04-16 2011-10-19 BAUER Maschinen GmbH Fräsvorrichtung zum Erstellen vertikal verlaufender Schlitze im Boden
US20240229404A9 (en) * 2021-03-23 2024-07-11 Bauer Maschinen Gmbh Measuring arrangement and removal device with a measuring arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1703023B1 (de) * 2005-03-18 2011-06-22 BAUER Maschinen GmbH Tiefbauvorrichtung zum Herstellen von Schlitzen im Boden mit Lenk- und Steuereinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1963040A1 (de) * 1969-12-16 1971-07-08 Josef Riepl Bau Unternehmung F Verfahren zum Herstellen von Ausbuchtungen in den Wandungen eines im Boden ausgebaggerten Schlitzes
FR2536455A1 (fr) * 1982-11-19 1984-05-25 Soletanche Dispositif pour assurer la verticalite d'un engin de perforation
DE3602387C1 (de) * 1986-01-28 1987-06-04 Hochtief Ag Hoch Tiefbauten Vorrichtung zum Einbringen eines im wesentlichen vertikalen Bodenschlitzes
DE29505263U1 (de) * 1995-03-28 1995-05-24 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Schlitzwandfräse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378002A1 (de) * 2010-04-16 2011-10-19 BAUER Maschinen GmbH Fräsvorrichtung zum Erstellen vertikal verlaufender Schlitze im Boden
AU2011201322B2 (en) * 2010-04-16 2012-12-20 Bauer Maschinen Gmbh Cutting device for producing vertically running trenches in the ground
RU2473740C2 (ru) * 2010-04-16 2013-01-27 Бауэр Машинен Гмбх Фрезерная установка для разработки вертикальных щелей в грунте
US8640364B2 (en) 2010-04-16 2014-02-04 Bauer Maschinen Gmbh Cutting device for producing vertically running trenches in the ground
US20240229404A9 (en) * 2021-03-23 2024-07-11 Bauer Maschinen Gmbh Measuring arrangement and removal device with a measuring arrangement
US12522997B2 (en) * 2021-03-23 2026-01-13 Bauer Maschinen Gmbh Measuring arrangement and removal device with a measuring arrangement

Also Published As

Publication number Publication date
FR2747704A1 (fr) 1997-10-24
EP0802286A3 (de) 1997-11-05
FR2747704B1 (fr) 1998-07-10

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