A raise borer is a machine used in underground mining, to excavate a circular hole between two levels of a mine without the use of explosives. The raise borer is set up on the upper level of the two levels to be connected, on an evenly laid platform (typically a concrete pad). A small-diameter hole (pilot hole) is drilled to the level required; the diameter of this hole is typically 230mm - 445mm (9" - 17.5"), large enough to accommodate the drill string. Once the drill has broken into the opening on the target level, the bit is removed and a reamer head, of the required diameter of the excavation, is attached to the drill string and raised back towards the machine. The drill cuttings from the reamer head fall to the floor of the lower level. The finished raise has smooth walls and may not
| Attributes | Values |
|---|
| rdf:type
| |
| rdfs:label
| - Raise boring (de)
- Raise boring (it)
- Raise borer (en)
- Raiseborrning (sv)
|
| rdfs:comment
| - Raise boring („Aufwärtsbohren“) ist ein Bohrverfahren, mit dem entlang einer Pilotbohrung von unten nach oben bohrend ein kreisrunder Schacht erbohrt wird. Das Verfahren ist ein vollmechanisches Gestängebohrverfahren, das für schachtartige Bauwerke mit mittleren Teufen geeignet ist. Das Raise boring wurde in den 1950er Jahren für den Erzbergbau Nordamerikas entwickelt. Es gilt zurzeit als wirtschaftlichste Methode zur Erstellung von Schächten. (de)
- Con il termine raise boring (RBM) si intende una macchina utilizzata soprattutto per scavare un foro circolare tra due livelli sotterranei, come ad esempio di una miniera, evitando l'utilizzo di esplosivi. (it)
- A raise borer is a machine used in underground mining, to excavate a circular hole between two levels of a mine without the use of explosives. The raise borer is set up on the upper level of the two levels to be connected, on an evenly laid platform (typically a concrete pad). A small-diameter hole (pilot hole) is drilled to the level required; the diameter of this hole is typically 230mm - 445mm (9" - 17.5"), large enough to accommodate the drill string. Once the drill has broken into the opening on the target level, the bit is removed and a reamer head, of the required diameter of the excavation, is attached to the drill string and raised back towards the machine. The drill cuttings from the reamer head fall to the floor of the lower level. The finished raise has smooth walls and may not (en)
- Raiseborrning är en schaktfri borrmetod som inleds med att ett pilothål borras längs ledningslinjen; t.ex med hammarborrning eller styrd borrning. Därefter byts borrhuvudet ut mot ett upprymningshuvud med hårdmetallrullar. Upprymningshuvudet har samma diameter som det färdiga hålet ska ha. Rymmaren kyls med vatten, dras genom berget och lämnar efter sig ett runt, slätt borrhål. Det lossborrade materialet faller antingen ned av sin egen tyngd, eller spolas bort med kylvattnet. (sv)
|
| dcterms:subject
| |
| Wikipage page ID
| |
| Wikipage revision ID
| |
| Link from a Wikipage to another Wikipage
| |
| Link from a Wikipage to an external page
| |
| sameAs
| |
| dbp:wikiPageUsesTemplate
| |
| has abstract
| - Raise boring („Aufwärtsbohren“) ist ein Bohrverfahren, mit dem entlang einer Pilotbohrung von unten nach oben bohrend ein kreisrunder Schacht erbohrt wird. Das Verfahren ist ein vollmechanisches Gestängebohrverfahren, das für schachtartige Bauwerke mit mittleren Teufen geeignet ist. Das Raise boring wurde in den 1950er Jahren für den Erzbergbau Nordamerikas entwickelt. Es gilt zurzeit als wirtschaftlichste Methode zur Erstellung von Schächten. (de)
- A raise borer is a machine used in underground mining, to excavate a circular hole between two levels of a mine without the use of explosives. The raise borer is set up on the upper level of the two levels to be connected, on an evenly laid platform (typically a concrete pad). A small-diameter hole (pilot hole) is drilled to the level required; the diameter of this hole is typically 230mm - 445mm (9" - 17.5"), large enough to accommodate the drill string. Once the drill has broken into the opening on the target level, the bit is removed and a reamer head, of the required diameter of the excavation, is attached to the drill string and raised back towards the machine. The drill cuttings from the reamer head fall to the floor of the lower level. The finished raise has smooth walls and may not require rock bolting or other forms of ground support. One impressive use of raise boring is the 7.1 m diameter shafts for Sasol's Middelbult and Bosjesspruit Mines in South Africa. The boxhole borer (or machine roger) is a variant of a raise borer that is used when there is not enough space on the higher of the two levels to be connected. The boxhole borer is set up on the lower level, drills a pilot hole as a guide, then drives the reamer bit along the pilot hole from the lower level to the upper. Precautions have to be taken to redirect falling drill cuttings away from the machine, and to reinforce the drill string. (en)
- Con il termine raise boring (RBM) si intende una macchina utilizzata soprattutto per scavare un foro circolare tra due livelli sotterranei, come ad esempio di una miniera, evitando l'utilizzo di esplosivi. (it)
- Raiseborrning är en schaktfri borrmetod som inleds med att ett pilothål borras längs ledningslinjen; t.ex med hammarborrning eller styrd borrning. Därefter byts borrhuvudet ut mot ett upprymningshuvud med hårdmetallrullar. Upprymningshuvudet har samma diameter som det färdiga hålet ska ha. Rymmaren kyls med vatten, dras genom berget och lämnar efter sig ett runt, slätt borrhål. Det lossborrade materialet faller antingen ned av sin egen tyngd, eller spolas bort med kylvattnet. Metoden används mest i gruvindustrin för att borra vertikala kanaler för t.ex. ventilation mellan två nivåer i gruvan. Här kan det handla om 800 meter långa borrhål med en diameter uppemot 7,1 meter. Vid schaktfri ledningsbyggnad handlar det om att borra kanaler i berg för t.ex. grova avloppsledningar. (sv)
|
| gold:hypernym
| |
| prov:wasDerivedFrom
| |
| page length (characters) of wiki page
| |
| foaf:isPrimaryTopicOf
| |
| is Link from a Wikipage to another Wikipage
of | |
| is Wikipage redirect
of | |
| is Wikipage disambiguates
of | |
| is foaf:primaryTopic
of | |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)