Surveying at Oyu Tolgoi Copper/Gold Mine - Chris Hutchison - AIMS

More documents

Recommendations

Info

CONCLUSION • The coordinate transfer from the surface to the 512 level by three wires showed a standard deviation of plus or minus 5 mm, a surprisingly good result. The coordinate transferred from the surface to the 1300 level by three wires showed a standard deviation of plus or minus 10 mm, an equally surprisingly good result.
CONCLUSION (cont) • Our GAK1 gyro was calibrated at Newcastle University baseline just prior to departure for Mongolia. The comparison between our GAK1 and the datum line of orientation adopted for the project (baseline joining OT13 and OT11 surface pillars) was GAK1 plus 31.6 arc seconds equals datum. This rotation of +31.6 arc seconds was applied to all other gyro orientations to maintain their relativity to the surface datum line. At the surface raise bore baseline, the initial gyro comparison showed that the coordinate join by the mine coordinates differed by 36 arc seconds (higher) h than the gyro bearing. At the 512 level, the mine coordinate join at the shaft differed by 7 minutes 36 seconds (higher) than the gyro bearing and 2 minutes 44 seconds (higher) than the gyro bearing at the raise bore chamber.
Page 1 and 2: SURVEYING AT OYU TOLGOI COPPER/GOLD
Page 3 and 4: OWNERSHIP & HISTORY (cont) • The
Page 5 and 6: GEOLOGY The South Gobi area lies ne
Page 7 and 8: SITE CONDITIONS Temperature at the
Page 9 and 10: SITE CONDITIONS (cont) Transport to
Page 11 and 12: SITE CONDITIONS (cont) Mongolia has
Page 13 and 14: PROJECT REQUIREMENTS AND PROJECT TE
Page 15 and 16: TECHNICAL SOLUTIONS • Due to the
Page 17 and 18: TECHNICAL SOLUTIONS (cont) • A Ge
Page 19 and 20: TECHNICAL SOLUTIONS (cont) • Rath
Page 21: TECHNICAL SOLUTIONS (cont) • Conn
Page 25 and 26: CONCLUSION (cont) The raise bore po
Page 27 and 28: Acknowledgements • Thanks are due

Surveying at Oyu Tolgoi Copper/Gold Mine - Chris Hutchison - AIMS

Create successful ePaper yourself

Delete template?

Save as template?