DWINAGARA, Barlian and WATTIMENA, Ridho K. and KRAMADIBRATA, Suseno and SULISTIANTO, Budi and RAI, Made Astawa and MATSUI, Kikuo and SHIRATSHI, Naofumi and SETIAWAN, Iwan Dharma and SUDARMAN, Herian and HENDRA, Esfandi (2004) MEASUREMENT OF ROCK MASS DEFORMATION MODULUS USING GOODMAN’S JACK IN PONGKOR UNDERGROUND GOLD MINE, INDONESIA. 2nd INTERNATIONAL WORKSHOP ON EATH SCIENCE AND TECHNOLOGY. pp. 379-385. ISSN 49902356-5-7
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Abstract
In situ measurement of rock mass deformation modulus has never been done in the Pongkor gold mine. Estimation of the rock mass deformation modulus was made by using the elasticity modulus of intact rock obtained in the uniaxial compression test in the laboratory. In situ measurement of rock mass deformation modulus in therefore required, which can provide important additional data. In this research, a Goodman’s Jack was used in bare holes with depth up to 7.5 m and diameters of 75 mm. The tests were carried out in the same depth for every bore hole and made in the part of bore hole where no crack occurred. At each point the tests were conducted in four different directions. The in situ tests revealed that the deformation modulus of the Au-Ag ore was 5.88 GPa and that of the footwall rock mass (breccia tuff) was 6.75 GPa and 5.63 GPa. The elasticity moduli of the Au-Ag ore and the footwall rock resulted from laboratory uniaxial compression tests were 10.45 GPa, 19.70 GPa and 13.78 Gpa respectively.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | BARLIAN DWI NAGARA |
| Date Deposited: | 10 Jan 2018 03:18 |
| Last Modified: | 10 Jan 2018 03:18 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/14085 |
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