Uppföljning av nya bultsättare för Kristinebergsgruvan
Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
New bolt machines of the make and model Atlas Copco Boltec-LC has been acquired in Kristineberg mine, which also meant that a new bolting method started to be used in the mine. The old bolting method was based on a drilling rig that predrilled holes and then have another machine comes after to put the bolt in the holes. The new acquired Boltec can perform the drill-ing and put a bolt in that hole itself without a repositioning of the boom.The thesis work primary goal was to investigate if the new bolt machines can make the productiongoals of the mine by collecting and studying the data from the control center. The secondary goal in the thesis, is about studying the differences among operators and see how their approach can affect the bolt quality.The result in the issue of capacity shows that it takes two Boltec to have the same capacity as one of the old bolting machines from the old method. However, there are several factors that influenced these numbers, especially how the operators reports their work in the mine.The secondary goal of the thesis was set up after that several bolts have shown that they were not properly embedded in the rock. Therefor the quality was questioned in Kristineberg. Devia-tion in the operator's approach has not been noted, however, a theory have been created and probably the answer to why the quality of the bolts varies.
Place, publisher, year, edition, pages
2013. , 37 p.
Teknik, Bultsättare, bultriggar, gruva, Boliden, säkerhet, kapacitet, bultning
IdentifiersURN: urn:nbn:se:ltu:diva-44990Local ID: 2bc87a45-aafc-42a1-8901-d0e1153535abOAI: oai:DiVA.org:ltu-44990DiVA: diva2:1018269
Subject / course
Student thesis, at least 7,5 credits
Mining and Geotechnical Industry, Higher Education Diploma
Validerat; 20131014 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved