OVERVIEW PREDIKSI ALIRAN AIRTANAH PADA PENAMBANGAN OPEN PIT

  • kadek nando setiawan nando saudara
  • Tedy Agung Cahyadi Universitas Pembangunan Nasional Veteran Yogyakarta
Kata Kunci: aliran airtanah, model numerik, tambang terbuka

Abstrak

Menghadapi air dalam penggalian penambangan terbuka (open pit) menyebabkan banyak masalah operasional, ekonomi, dan keselamatan. dengan bertambahnya kedalaman penambangan, kondisi hidrogeologis menjadi lebih kompleks, dan aliran air masuk ke tambang meningkat setiap tahun, bencana air tambang sering terjadi, yang mengakibatkan kerugian ekonomi hingga puluhan juta dollar. Oleh karena itu, perlu dilakukannya prediksi aliran air masuk ke tambang. Penelitian ini bertujuan mengetahui model aliran airtanah yang cocok diterapkan di pertambangan, dan melihat tren aliran airtanah yang masuk ke pit serta menentukan faktor yang mempengaruhi aliran air masuk ke tambang. Penulis melakukan komparasi beberapa literatur untuk mengetahui model terbaik, menganalisis tren aliran airtanah dan faktor yang mempengaruhi aliran air ke tambang. Dari hasil tersebut didapatkan bahwa, model numerik memberikan hasil yang lebih baik daripada model analitik, tren aliran airtanah terjadi kenaikan dan penurunan serta fluktuasi, terhadap waktu dan kedalaman, serta banyak faktor yang mempengaruhi aliran airtanah ke pit tambang diantaranya faktor geologi, hidrogeologi, dan kegiatan penambanganya.

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Diterbitkan
2020-10-27