SYA’BANI, TOGA AHMAD (2018) RANCANGAN SISTEM PENYALIRAN TAMBANG BATUGAMPING KUARI XII DI PT. HOLCIM INDONESIA Tbk TAMBAKREJA KABUPATEN CILACAP PROVINSI JAWA TENGAH. Other thesis, Univesitas Pembangunan Nasional "Veteran" Yogyakarta.
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Abstract
PT. Holcim Indonesia Tbk as one of the private companies that works in a mining sector wants to utilize Limestone’s potency in Cilacap region. Mining system wich applied is surface mining with quarry method. This mining system is likely affected by weather condition, especially during raining condition. During heavy rainfall, the runoff can potentially disrupt mining which located at lower area. Therefore, it is necessary to make an design of adequate mine drainage system which suite to the mining condition, so that the mining operations can be run properly. Based on the analysis of rainfall data from 2007 - 2016, the scheduled precipitation value is 148,68 mm/day, with rainfall intensity 51,54 mm/hour during 3-year rainfall period and hydrology risk by 86,83%. Area and discharge of the runoff each catchment area (DTH) in every push back is : 1. Push Back ke - 1: DTH I = 0,16 km²; 0,92 m³/sec, DTH II = 0,24 km²; 3,12 m³/sec, DTH III = 0,66 km²; 7,46 m³/sec. 2. Push Back ke - 2: DTH I = 0,16 km²; 0,92 m³/sec, DTH II = 0,32 km²; 4,14 m³/sec, DTH III = 0,69 km²; 7,75 m³/sec. 3. Push Back ke - 3: DTH I = 0,15 km²; 0,86 m³/sec, DTH II = 0,35 km²; 4,54 m³/sec, DTH III = 0,69 km²; 7,75 m³/sec. It is necessary to develop some open channel to drain the runoff to the settling pond and river Recomendations open chanel (ST) follow design Push back - 3, because every Push Back has not changed significantly. Push Back – 3 dimension : 1. ST-1: h = 0,80 m; d = 0,90 m; B = 0,90 m; b = 1,80 m; a = 1,10 m, 2. ST-2: h = 1,80 m; d = 2,10 m; B = 2,10 m; b = 4,20 m; a = 2,40 m, 3. ST-3: h = 1,50 m; d = 1,70 m; B = 1,70 m; b = 3,30 m; a = 1,90 m, 4. ST-5: h = 2,10 m; d = 2,40 m; B = 2,40 m; b = 4,80 m; a = 2,80 m, 5. ST-6: h = 2,10 m; d = 2,50 m; B = 2,50 m; b = 4,90 m; a = 2,80 m. In addition, there are four culvert (GG) that serves to drain water from the mine which cut the haul roads. Vertical section of the culvert is in the form of a trapezoidal made from concrete with each minimal dimension : 1. G-1 : h = 1,00 m; d = 1,20 m; B = 1,20 m; b = 2,40 m; a = 1,40 m, 2. G-2 : h = 1,50 m; d = 1,70 m; B = 1,70 m; b = 3,40 m; a = 2,00 m, 3. G-4 : h = 1,50 m; d = 1,70 m; B = 1,70 m; b = 3,40 m; a = 2,00 m, 4. G-4 : h = 1,50 m; d = 1,80 m; B = 1,80 m; b = 3,50 m; a = 2,00 m.
| Item Type: | Thesis (Other) |
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| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eny Suparny |
| Date Deposited: | 06 Apr 2018 04:09 |
| Last Modified: | 06 Apr 2018 04:09 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/14912 |
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