GEOLOGI DAN STUDI DESAIN TIMBUNAN DISPOSAL PT. NUSANTARA BERAU COAL KECAMATAN TANJUNG REDEB KABUPATEN BERAU- KALIMANTAN TIMUR

GILANG, FIRMANDA (2014) GEOLOGI DAN STUDI DESAIN TIMBUNAN DISPOSAL PT. NUSANTARA BERAU COAL KECAMATAN TANJUNG REDEB KABUPATEN BERAU- KALIMANTAN TIMUR. Other thesis, UPN "Veteran" Yogyakarta.

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Abstract

CV . Cintapuri Pratama is a company engaged in coal mining . CV mining sites . Cintapuri Cintapuri Primary in the village , Banjar Baru , South Kalimantan. The problem faced by CV . Primary Cintapuri one of which is a problem because there is no draft mine draining system which will result in many puddles on the work area occur mainly during the rainy season . It is very disturbing and working conditions affect production . The main source of mine water in the coal mining area by CV . Primary Cintapuri is rainwater . Plan 123 mm rainfall / day with rainfall intensity of 20.38 mm / h and rainfall return period ( PUH ) 5 ( five ) years. Location mine draining not have an adequate system . Areas which become providers rain water and run off water on site mining plan is divided into 6 Catchment Area . a.Catchment Area I, area = 0.5247 km2 b.Catchment Area II , area = 0.1152 km2 c.Catchment Area III , area = 0.0049 km2 d.Catchment Area IV , area = 0.0093 km2 e.Catchment Area V , area = 0.0287 km2 f.Catchment Area VI , area = 0.0453 km2 The volume of water that enters the mine at 2.3987 m3/second . Open Channel planned is a combination of mine drainage and mine dewatering . Mine Drainage channel made in the KP boundary in order to prevent the ingress of water from outside the mine site , namely : a. Open Channel 1 : a = 0.7 m , b = 0.7 m, B = 1.3 m, α = 60o With diameter of culvert is 1,2 m Runoff water that flowed through the channel and then get into the sinks . Sinks are made with dimensions of length 118 m , width 60 m , and a depth of sinks is 5 m . After the water is pumped into settling ponds . Pumps are needed as much as 1 unit vertical centrifugal pump type pump with a maximum discharge of 540 m3/second pump . In the flow of run off water itself contained dissolved material was 121 mg / l , and the percent solid on settling ponds at 1.35 % . With such a large percent of the solid , long deposition of material required for 3 days . The dimensions of the settling ponds is 28 m long , 12 m wide , and a depth of settling ponds is 4 m with a volume of 1152 m3 settling ponds . Ultimately expected after discharge from the settling ponds , the water that comes out will not pollute the environment around the mine .

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