Electronic Theses and Dissertation

Kegiatan peledakan pada tambang terbuka merupakan metode utama pembongkaran batuan, namun berpotensi menimbulkan ground vibration yang dapat mengganggu lingkungan dan permukiman di sekitar area tambang. penelitian ini bertujuan menganalisis pengaruh parameter peledakan terhadap peak particle velocity (ppv), mengembangkan model prediksi ppv berdasarkan scaled distance (sd), mengevaluasi efektivitas metode pengendalian ground vibration, serta menyusun rekomendasi teknis pengendalian peledakan di pit 2 banko barat pt bukit asam tbk, tanjung enim, sumatera selatan. penelitian menggunakan data primer berupa nilai ppv, jarak pengukuran, charge per delay, geometri peledakan aktual, dan surface delay, kemudian dianalisis menggunakan regresi power, multiple linear regression (mlr), dan pareto chart. hasil penelitian menunjukkan bahwa nilai ppv di pemukiman berada pada rentang 0,418–0,930 mm/s pada rentang jarak 671–1273 m sehingga masih berada di bawah batas pengendalian perusahaan sebesar 1 mm/s. model regresi power menghasilkan persamaan ppv = 686,98(sd)−1,337 dengan nilai r² sebesar 0,7798, sehingga memiliki kemampuan yang baik dalam memprediksi ground vibration. analisis mlr menunjukkan bahwa jarak, charge per delay, dan stemming merupakan parameter yang paling dominan memengaruhi ppv. evaluasi efektivitas menunjukkan bahwa burden relief merupakan metode pengendalian paling efektif dengan efektivitas 33,64%, diikuti line drilling sebesar 18,72%. berdasarkan hasil penelitian tersebut, pengendalian ground vibration dapat direkomendasikan melalui pengaturan charge per delay berdasarkan model regresi power serta penggunaan kombinasi surface delay 67 × 109 ms pada sistem nonel atau electronic delay detonator (edd) untuk mempertahankan nilai ppv pada tingkat yang aman tanpa mengurangi efektivitas peledakan.

Blasting is the primary method of rock fragmentation in surface mining; however, it has the potential to generate ground vibration that may adversely affect the surrounding environment and nearby residential areas. This study aimed to analyze the influence of blasting parameters on Peak Particle Velocity (PPV), develop a PPV prediction model based on Scaled Distance (SD), evaluate the effectiveness of ground vibration control methods, and propose technical recommendations for vibration control at Pit 2 Banko Barat, PT Bukit Asam Tbk, Tanjung Enim, South Sumatra Province. Primary data, including PPV, monitoring distance, charge per delay, actual blasting geometry, and surface delay, were analyzed using power regression, Multiple Linear Regression (MLR), and Pareto Chart analysis. The results showed that PPV values measured at the residential area ranged from 0.418 to 0.930 mm/s t monitoring distances of 671–1273 m, remaining below the company's control limit of 1 mm/s. The developed power regression model, PPV = 686.98(SD)−1.337, achieved an R² value of 0.7798, indicating good predictive capability for ground vibration under similar blasting conditions. MLR analysis identified distance, charge per delay, and stemming as the dominant factors influencing PPV. Evaluation of vibration control methods indicated that burden relief was the most effective technique, reducing PPV by 33.64%, followed by line drilling with an effectiveness of 18.72%. Based on these findings, ground vibration control is recommended through optimization of charge per delay using the developed power regression model and the application of a 67 × 109 ms surface delay for Nonel initiation systems or the use of Electronic Delay Detonators (EDD) to maintain PPV at a safe level without compromising blasting performance.