Search for dissertations about: "caving analysis"

Showing result 6 - 10 of 18 swedish dissertations containing the words caving analysis.

  2. 6. Hanging wall stability of sublevel caving mines in Sweden

    Author : Alvaro Herdocia; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : Mining with sublevel caving implies a drastic destruction of the ground surface in the area conforming the hanging wall of the mine. The extent of this affected zone is of little importance in unpopulated areas, but becomes of utmost economic significance when there are mine installations or a town site located on it. READ MORE

  4. 7. Towards understanding breakage and flow in sublevel caving (SLC) : Development of new measurement techniques and results from full-scale tests

    Author : Matthias Wimmer; Pekka Särkkä; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Abstract : Blast function, fragmentation and gravity flow are core elements for sublevel caving (SLC). For the ore recovery to be as high and the waste rock dilution as low as possible all three elements have to work as planned. READ MORE

  5. 8. Role of Fragmentation at the Production Level of a Sublevel Caving Operation

    Author : Sohail Manzoor; Anna Gustafson; Håkan Schunnesson; Daniel Johansson; Javad Barabady; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : This research was conducted to evaluate the association of rock fragmentation with different unit operations of a sublevel caving (SLC) production cycle. Drilling, charging, and blasting, as well as the nature of the rock mass, can affect the fragmentation observed at the drawpoints. READ MORE

  6. 9. Improved understanding of sublevel blasting : Determination of the extent of the compacted zone, its properties and the effects on caving

    Author : Nikolaos Petropoulos; Daniel Johansson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sublevel mining; compaction; confining material; confined blast; impact tests; burden dynamics; coarse-grained material; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : Sublevel caving (SLC) is a mass mining method relying on the flowability of the blasted material. The ore is blasted in slices against caved material which is mainly waste rock. The result of the confined blast is greatly influenced by the interaction between the blasted material and the caved material. READ MORE

  7. 10. Predominant failure mechanisms at the Kiirunavaara mine footwall

    Author : Mikael Svartsjaern; Diego Mars Ivars; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : The Luossavaara-Kiirunavaara Aktiebolag (LKAB) Kiirunavaara mine is a large scale sub-level caving (SLC) mine in northern Sweden. The use of SLC as a mining method inherently causes significant rock mass movements above the extraction level. READ MORE