Sökning: "hard rock mine"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden hard rock mine.

1. 1. Design fires in underground hard rock mines

   Författare :Rickard Hansen; Haukur Ingason; Håkan Frantzich; Mälardalens högskola; []
   Nyckelord :Design fire; underground; hard rock mine; vehicle fire; smoke spread; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : During several decades considerable research activities have been conducted with respect to fires in coal mines, but the research activities with respect to hard rock mines have been limited. As the hard rock mines are getting more complex the need for deeper understanding of fires in underground hard rock mines are getting more in demand. LÄS MER

3. 2. Mine-scale rock mass behaviour at the Kiirunavaara Mine

   Författare :Jessica Vatcher; Flavio Lanaro; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Sammanfattning : The interaction of the geological and mining environments leads to a variety of forms of rock mass behaviour, including seismicity and falls of ground. A precise understanding, however, of the role of geology in rock mass behaviour experienced by Luossavaara-Kiirunavaara Aktiebolag’s (LKAB) Kiirunavaara Mine remains unknown. LÄS MER

4. 3. Strength, fallouts and numerical modelling of hard rock masses

   Författare :Catrin Edelbro; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Sammanfattning : The prediction of compressive stress-induced failures is of concern for the design and construction of deep underground excavations in mining and civil engineering. An overstressed rock mass may result in fallouts of rock, which may cause occupational safety hazards, damage of equipment, and/or production disturbances. LÄS MER

5. 4. Lastningssystem i brytningsfront för kontinuerliga bergflöden under jord

   Författare :Bo Forsman; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

   Sammanfattning : There is a demand in mining for more investments in continuous loading methods in order to achieve higher productivity and lower costs. The creation of a better environment is another major goal which could be attained by using remote or automatic control of the continuously working machines. LÄS MER

7. 5. Deformation and failure of hard rock under laboratory and field conditions

   Författare :Kelvis Pérez; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Sammanfattning : The understanding of the fracture mechanisms and failure processes of the rock is an important requirement for the design of mining excavations and civil engineering constructions. The fracture process is necessary for the excavation and fragmentation of rock, but fracture of rock must be avoided and controlled to preserve the integrity of the construction. LÄS MER