PENGGUNAAN FOTO UDARA UNTUK MONITORING LERENG TIMBUNAN IPD PIT 1 LAHAN PASCATAMBANG PT MEGAPRIMA PERSADA
DOI:
https://doi.org/10.30872/jtgeo.v8i2.25604Abstract
Salah satu tantangan utama dalam pascatambang adalah pemantauan stabilitas lereng timbunan. Penelitian ini bertujuan untuk menganalisis tingkat ketelitian penggunaan foto udara dari Unmanned Aerial Vehicles (UAV) dalam mengidentifikasi lereng timbunan lahan pascatambang, dengan pendekatan kuantitatif berbasis parameter spasial. Dari hasil penelitian penggunan drone/UAV dalam kegiatan identfikasi lereng lahan pascatambang IPD (In pit dump) Pit 1 lahan pascatambang PT Megaprima berdasarkan ketentuan (standart) yang berlaku didapat nilai CE90 yang dihasilkan nilai horisontal adalah 0,64 meter dan nilai LE90 ketetlitian secara vertikal adalah 2,02 meter secara ketentuan masih masuk dalam Kelas 1 pada ketelitian horizontal dan masuk kedalam kelas 3 ketetlitian secara vertikal. Dari data spasial yang dihasilkan dari pemetaan menggunakan drone atau UAV pada daerah peneltian IPD Pit 1 berdasarkan analisis ulang (back analysis) geoteknik nilai Faktor Keamanan (FK) adalah 0,77 dalam kondisi FK Dinamis pada salah titik lereng timbunan yang diteltiti, sehingga jika mengacu kepada ketentuan Kepmen ESDM nomor : 1827.K/30/MEM/2018 masuk kedalam kataegori keparahan konsekuensi tinggi. Secara lingkungan daerah peneltian masih terdapat void, kurangnya vegetasi yang menutupi, banyak terbentuk gulir erosi dan dekat dengan pemukiman Masyarakat serta daerah penelitian merupakan lereng timbunan yang terbentuk pada lubang bekas tambang seluas 70 Ha.References
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