DE273409C - - Google Patents

Info

Publication number
DE273409C
DE273409C DENDAT273409D DE273409DA DE273409C DE 273409 C DE273409 C DE 273409C DE NDAT273409 D DENDAT273409 D DE NDAT273409D DE 273409D A DE273409D A DE 273409DA DE 273409 C DE273409 C DE 273409C
Authority
DE
Germany
Prior art keywords
boreholes
widenings
gravity
created
production
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.)
Active
Application number
DENDAT273409D
Other languages
German (de)
Publication of DE273409C publication Critical patent/DE273409C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/10—Preparation of the ground
    • E21D1/12—Preparation of the ground by freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Herstellung lotrechter Bohrlöcher, insbesondere beim Gefrierverfahren, dadurch gekennzeichnet, daß in den Bohrlöchern in größeren Abständen Erweiterungen geschaffen werden, innerhalb deren sich das Bohrgestänge durch die eigene Schwere lotrecht einstellt.Process for the production of perpendicular boreholes, especially in the freezing process, characterized in that widenings are created in the boreholes at greater intervals, within which the drill pipe adjusts itself vertically due to its own gravity.
DENDAT273409D Active DE273409C (en)

Publications (1)

Publication Number Publication Date
DE273409C true DE273409C (en)

Family

ID=529865

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT273409D Active DE273409C (en)

Country Status (1)

Country Link
DE (1) DE273409C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11486789B2 (en) 2018-04-30 2022-11-01 Tna Australia Pty Limited Bag engaging device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11486789B2 (en) 2018-04-30 2022-11-01 Tna Australia Pty Limited Bag engaging device

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