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All Journal TEKNIK Jurnal Geominerba
Nurakhmi Qadaryati
Departemen Teknik Geologi, Universitas Diponegoro
Earth & Planetary Sciences Education Engineering Other

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KETIDAKPASTIAN DISTRIBUSI KUALITAS BATUBARA MENGGUNAKAN METODE INTERPOLASI PADA SITE BANKO TENGAH BLOK A, KABUPATEN MUARA ENIM, SUMATERA SELATAN Dian Agus Widiarso; Ulfatunnisa; Nurakhmi Qadaryati
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 7 No 1 (2022): Jurnal Geominerba 2022
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (905.522 KB) | DOI: 10.58522/ppsdm22.v7i1.57

Abstract

Block A of Banko Tengah is a concession exploration area. Along with the increasing demand for electrical energy & the condition of diverse coal qualit,y so a feasibility study is needed for optimizing exploration activity. The research location is Lawang Kidul District, Muara Enim Regency, South Sumatra. Uncertainty studies are related to distribution, seam continuity, and spatial variability pattern, accordingly needed seam reconstruction and coal quality assessment based on drilling data and result of geochemical test analysis. Interpolation methods are kriging, inverse distance to power, and natural neighbor. The quality analysis results show that mine brand of A1 is GAR 4.200 LS, A2 is GAR 4.400 LS, B1 is GAR 4.400 LS, B2 is GAR 4.200 LS, C1 is GAR 4.600 HS, and C2 is GAR 4.400 LS. The statistical assessment was carried out on B1 because of continuity seam, good mine brand, and the most data. The effectiveness of the interpolation method is natural neighbor because the borehole points are pretty close (there is dense data in East-West & rare data in Northeast – East) and the variability of the actual data is quite low.
Analisis Kualitas untuk Optimasi Pemanfaatan Potensi Sumber Daya Mineral Non Logam dan Batuan di Kecamatan Lumbir, Kabupaten Banyumas Rinal Khaidar Ali; Nurakhmi Qadaryati; Sigit Widadi
TEKNIK Vol 40, No 3 (2019)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1119.257 KB) | DOI: 10.14710/teknik.v39i3.21889

Abstract

Kecamatan Lumbir, Kabupaten Banyumas mempunyai sumber daya mineral non logam berupa lempung dan sumber daya batuan berupa andesit dan batupasir. Analisis sebaran, jenis, dan kualitas diperlukan untuk optimasi pemanfaatan sumber daya alam tersebut. Analisis laboratorium meliputi analisis XRD (X-Ray Diffractometry), XRF (X-ray Fluoroscence) dan analisis kuat tekan batuan. Analisis XRF menunjukan lempung di daerah Lumbir mempunyai unsur SiO2 yang tinggi (berkisar antara 39 – 54,5 %) sehingga dapat dijadikan bahan campuran dalam pembuatan semen, gerabah kasar, dan batu bata. Sumber daya batuan berupa andesit di Desa Canduk dan Desa Parung Kamal memiliki nilai Kuat Tekan Ultimit (qu) berkisar antara 247,7547 kg/cm2 - 45,4674 kg/cm2, sehingga dapat digunakan sebagai batu hias dan batupasir di Desa Karanggayam dapat dijadikan tanah urug
Co-Authors Dian Agus Widiarso Rinal Khaidar Ali Sigit Widadi Ulfatunnisa