Electronic Theses and Dissertation

Efisiensi transportasi dalam kegiatan pertambangan sangat dipengaruhi oleh kondisi geometri jalan angkut dan daya dukung jalan terhadap beban kendaraan. Penelitian ini dilakukan pada jalan hauling Elang PT Agrabudi Jasa Bersama, Kabupaten Aceh Barat, untuk mengevaluasi pengaruh geometri jalan terhadap waktu tempuh (travel time) serta menganalisis daya dukung jalan terhadap alat angkut. Data diperoleh melalui pengukuran langsung terhadap lebar jalan, kemiringan (grade), superelevasi, jari-jari tikungan, dan waktu tempuh aktual dump truck Mitsubishi Canter 125 PS dalam kondisi bermuatan dan kosong. Analisis tambahan mencakup rolling resistance, grade resistance, serta simulasi perbaikan geometri. Hasil penelitian menunjukkan beberapa segmen jalan belum memenuhi standar ideal, terutama pada STA 9+900 dan STA 10+700 (jalan lurus), serta STA 4+500 dan STA 7+600 (tikungan). Selain itu, kemiringan jalan di beberapa STA melebihi batas maksimum 8%. Kondisi seperti ini menyebabkan rata-rata waktu tempuh alat angkut mencapai 70,35 menit. Setelah dilakukan simulasi perbaikan geometri, waktu tempuh menurun menjadi 58,12 menit, menunjukkan efisiensi sebesar 12,23 menit atau 17,4%. Penurunan ini membuktikan bahwa perbaikan geometri jalan dapat meningkatkan efisiensi operasional, mengurangi hambatan waktu tempuh, dan mendukung pencapaian target produksi serta memastikan biaya pengangkutan batubara tetap efisien dan terkendali.


Kata kunci: Geometri jalan, travel time, jalan hauling, pengangkutan batubara, PT Agrabudi Jasa Bersama.

Transportation efficiency in mining operations is highly influenced by the geometric condition and bearing capacity of the haul road. This study was conducted on the Elang hauling road at PT Agrabudi Jasa Bersama, West Aceh Regency, to evaluate the influence of road geometry on travel time and analyze the road’s ability to support haul truck loads. Data were collected through direct field measurements of road width, gradient, superelevation, curve radius, and actual travel time of Mitsubishi Canter 125 PS dump trucks in both loaded and empty conditions. Additional analyses included rolling resistance, grade resistance, and a geometric road improvement simulation. The findings show that several road segments did not meet geometric standards, particularly STA 9+900 and STA 10+700 (straight sections), and STA 4+500 and STA 7+600 (curved sections). Moreover, some gradients exceeded the company’s maximum limit of 8%. These conditions contributed to a high average travel time of 70.35 minutes. After a simulated geometric improvement, including widening, grade correction, and curve adjustments, the travel time decreased to 58.12 minutes—an improvement of 12.23 minutes or 17.4%. This reduction demonstrates that improving road geometry significantly enhances transportation efficiency, reduces travel delays, and supports production target achievement while ensuring coal transportation costs remain efficient and under control. Keywords: road geometry, travel time, road hauling, coal transport, PT Agrabudi Jasa Bersama.