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Keywords: ore body
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-075
... finishes, an iron mine with steeply inclined ore-bodies will generally transform to underground mining. Non-pillar sublevel caving method, with horizontal slice mining from up to down, is commonly used for mining deep ore-bodies under the open-pit bottom. As horizontal slice mining proceeds, a gradually...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-154
... EXCAVATION SUPPORT FOR ORE EXPLOITATION ABSTRACT Among other components, ore body T was discovered in the Bor pit copper mine at a depth of app. 500m. The ore body is relatively small: 60-65m long, 40-45m wide and up to 50m high, but with an extremely high content of copper and accompanying metals...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-210
... geomechanics casing and cementing extensometer instrument Rockfill ore body metals & mining cement chemistry modulus value situ deformation modulus value embedment strain gauge backfill cement property US government stope Institute proceedings earth pressure cell 1209 Tesarik D.R...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-061
... reservoir geomechanics regularity convergence ore body stress-strain state Interpretation and modelling of rock masses deformations around worked-out space . ;' at ore deposits Interpretation et rnodeltsatlon des deformations des massifs rocheux auteur de zones exploitees " , '" . des gisements...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-126
... Bauxite deposits at the Poljane location are of the Senonian age. The lenticular ore bodies have the form of irregular lenses up to several hundred thousand tons dimensions. Bauxite seam thickness ranges from several up to 40 metres. The bauxite floor consists of limestone on the surface with sharp...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-112
... absolute stress measurement data mining mechanics programme assessment objective geometry Orebody hangingwall stress measurement ground behaviour Reservoir Characterization structural geology programme extraction excavation pillar Redistribution ore body stress level ,STRESS...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-123
... OREBODY As shown in Fig.l, the angle of dip of ore body is between 80 and 85. Its hanging wall is composed of firm white marble and footwall of interstratified band of thin marble, slaty phyllite, etc. The measured openings lie in the footwall, 980 meters below the ground surface. The measuring points...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-205
... types of failure that are due to excess loading of the rock mass. 2. CUT AND FILL MINING IN THE NÄSLIDEN MINE The geology and structures of the Nasliden mine have been described by Stephansson, 1981. Fig. 1. Cut and fill mining is used and the ore body is mined in slices 3.5 m high. The open stope...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-144
.... The measurements have given evidence that though the ore body and the ground around it have deformed largely and irregularly, no serious fracture of rock has secured to this day when 67% of ore has been already mined. It is expected that a little further pillar-robbing may be possible without causing surface...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-063
... Abbauauslegung der Grube Stekenjokk, Nordschweden N. KRAULAND Dip1.-Ing. Bo1iden Meta11 AB, Bo1iden, Sweden SUMMARY: The Stekenjokk Mine is the latest of the 15 producing mines of the Bo1iden Meta11 AB. Production started in 1975. The gently dipping ore body has a very complicated geometry due to intensive...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-088
... and the surrounding rocks strike approximately E-W, stretching partly under the Sunndalsfjord, which extends in a N-S direction (fig. 1). Mining underground is done in the main ore zone, consisting of 7 lens shaped ore bodies, and the Z-ore zone in which 3 lenses are worked. Until the beginning of 1974 mining...

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