Distribution system dewatering in coal mining at PIT Sena Sungai Lilin District, Musi Banyuasin Regency, South Sumatra Province

Heri Prabowo; Wahyudi Wahyudi; Rolitu Rolitu

doi:10.24036/jptk.v6i2.32623

Authors

Heri Prabowo Department of Mining, Faculty of Engineering, Universitas Negeri Padang, Indonesia
Wahyudi Wahyudi Department of Mining, Faculty of Engineering, Universitas Negeri Padang, Indonesia
Rolitu Rolitu Department of Mining, Faculty of Engineering, Universitas Negeri Padang, Indonesia

DOI:

https://doi.org/10.24036/jptk.v6i2.32623

Keywords:

Open Pit Mining, Pump, Mine Drainage, Coal, Sump, Rainfall

Abstract

The purpose of this research is to calculate the total design discharge of water entering the mining site in the sena pit of PT Putra Muba Coal (PMC), design the appropriate shape and dimensions of the sump to accommodate the amount of water entering the mining site and calculate the number of pumps needed to remove water entering the mine to the settling pond. The source of water entering the mine area comes from rainwater entering the mine opening, water runoff from the rainwater catchment area in the area around the mine opening, and groundwater rise. Based on the results of the analysis of rainfall data for 2013-2022, a rainfall plan of 77, 225 mm/day, rainfall intensity of 9.714 mm/hour with a rainfall return period of 2 years was obtained. The rainfall catchment area at the research site is 72,936 m2 with a discharge generated of 0.03 m3 / second and groundwater discharge of 0.00812 m3 / second. To remove the water entering the mine, it is flowed naturally into the sump with dimensions of 50 m length, 14 m top width, 13 m bottom width, and 5 m depth. The dimensions of the open channel are planned with a channel width of 32 cm, a flow depth of 28 cm, a wet cross-sectional area of 13.6 cm2, a wet circumference of 97 cm, a hydraulic radius of 9.25 cm, and a channel length of 233m. The water in the sump is pumped into an open channel. The pump used has a maximum discharge of 150 m3 / hour and a total pump head of 11.8712 m with a pipe diameter of 6 inches.

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References

Andrianto, D., Kasim, & Thamrin. (2019). Perencanaan Sistem Penyaliran Tambang Batubara PT. Rajawali Internusa Jobsite PT. Indah Jaya Abadi Pratama Lahat, Sumatera Selatan. Jurnal Bina Tambang, Vol. 4(No.3), 89–97.

Chakti, A. M., & HAR, R. (2021). Perencanaan Sistem Penyaliran Tambang Studi Kasus: Pit Timur Bukit Wrangler PT. Antam TBK Unit Bisnis Pertambangan Nikel Sulawesi Tenggara. Jurnal Bina Tambang, 6(2), 72–83.

Enim, M., Selatan, P. S., Mei, T., Zendrato, K., & Har, R. (1999). Analisis Perhitungan Debit Air Tanah pada Sistem Penyaliran Tambang Terbuka di Pit X PT . Bukit Asam Tbk ., Kabupaten. 6(5), 169–176.

Husen, S., Yusuf, M., & Hak, A. (2018). Evaluasi Teknis Sistem Penyaliran Tambang Pada Pit 3 Timur Banko Baratpt. Bukit Asam (Persero), Tbk Unit Penambangan Tanjung Enim, Sumatera Selatan. Jp, 2(2), 63–69.

Iqra, M. A., & Prabowo, H. (2021). Kajian Teknis Pemeliharaan Settling Pond Pada Pengolahan Bjih Besi, Pt. Kuatassi, Kabupaten Solok, Sumatera Barat. Bina Tambang, 6(5), 140–145.

Mutiara Nur Fajryanti, Ashari, Y., & Moralista, E. (2021). Perencanaan Sistem Penyaliran dan Pemompaan pada Tambang Terbuka di PT X Desa Tegalega, Kecamatan Cigudeg Kabupaten Bogor, Provinsi Jawa Barat. Jurnal Riset Teknik Pertambangan, 1(1), 39–46. https://doi.org/10.29313/jrtp.v1i1.31

Prabowo, H. (2020). Menghitung Debit Air Limpasan di Pit Bukit Everest PT. Antam Tbk UBPN Sulawesi Tenggara. Bina Tambang, 5(3), 71–77.

Putra, B., Citranusa, A., & Selatan, S. (2021). Kajian Teknis Sistem Penyaliran Tambang Terbuka Pada Penambangan Batubara PT . Terbuka Pada Penambangan Batubara Pt . Jurnal Bina Tambang, 3(3), 1202–1212.