ADHAREZA, ADRIEL (2016) EVALUASI GROUND SUPPORT BERDASARKAN ROCKMAINDEX DAN PEMODELAN NUMERIK DENGAN FINITE ELEMENT METHODPADA LUBANG BUKAAN TAMBANG BAWAH TANAH CIKONENG PT. CIBALIUNG SUMBERDAYA BANTEN. Other thesis, UPN "VETERAN" YOGYAKARTA.
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Abstract
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ABSTRACT
PT. CibaliungSumberdaya is one of gold mine company which using cut
and fill method for the underground mining system. In underground mining
system, all activity doing in ground from surface. The instability of tunnel is one
of the problem in underground mining activity. The instability of tunnel become a
dangerous potential if not handled correctly, what is required a ground support
system in order that dangerous potential can reduce the impact.
A ground support system certainly require an analysa from a safety and
economic part. Ground support system should probably produce a revision by a
time or an evaluation following mining progress. This evaluation is evaluate the
primary ground support system in mining which applied by recommendation of
Geotechnical Unit, Dept. Quality Control, PT. CibaliungSumberdaya classified of
Rock Mass Rating (RMR) with the ground support system classified by Rock
Mass index (RMi). The meaning of evaluation is evaluate from a ground support
quantity aspect (total splitset requirement and thickness of shotcrete) and qround
support effective aspect to gain a highly safety value. Manual calculation about
safety factor (FK) value, plastic zone, stress distribution surrounding the tunnel
also available with added a total displacement and strength factor (SF) value from
analysis of numerical calculation finite element method with Phase2 v.07. Result
of research in 3 locations, evaluation of grouind support system by Rock Mass
index (RMi) more efficient from support quantity and effective from support
utility, also give a highly safety factor for a tunnel.
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > T Technology (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | Sarimin Sarimin |
| Date Deposited: | 11 May 2016 07:16 |
| Last Modified: | 11 May 2016 07:17 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/676 |
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