Analisis Parameter Peledakan yang Sangat Mempengaruhi Arah dan Jarak Flying Rock pada Tambang Andesit PT Gunung Kulalet Kecamatan Baleendah Kabupaten Bandung Provinsi Jawa Barat

Fahri Ramadhan, Yuliadi Yuliadi, Noor Fauzi Isniarno

Abstract


Abstract. Blasting is the most widely used method of rock decomposition in the mineral industry, rock decomposition by using blasting is required large blasting energy, blasting energy is divided into 2 namely mechanical energy that can defiance rocks and residual energy that causes negative impacts of blasting, namely ground vibration, airblast, and flying rock. The purpose of this study is to find out the most influential geometric parameters of blasting and to determine the most influential parameters of detonation. The primary data taken for the study were a burden, spacing, stemming, explosive stuffing, into the hole, a number of blast holes, boundary coordinates of blasting area, flying rock coordinate points, and blasting patterns. The farthest actual flying rock-throwing distance is obtained based on the plotting boundary of the blasting area and flying rock point and taken the furthest throw distance, the most influential blasting geometry of the flying rock distance can be known by using simple linear regression to know the determination coefficient and correlation coefficient. The furthest flying rock distance is at 20 as far as 115.43 m and the closest flying rock distance is 22.47 m, the coefficient of determination for each detonation geometry parameter is burden R2=0.4030, spacing R2=0.3766, stemming R2=0.4905, into hole R2=0.2075, explosive stuffing R2=0.0023, and powder factor R2=0.4386 so that the most influential geometric parameters are stemming.

Keywords: Flying Rock, Stemming, linear regression, coefficient of determination

Abstrak. Peledakan merupakan metode pemberaian batuan yang paling banyak digunakan di industri mineral, pemberaian batuan dengan menggunakan peledakan dibutuhkan energi peledakan yang besar, energi peledakan terbagi menjadi 2 yaitu energi mekanik yang dapat memberaikan batuan dan energi sisa yang menimbulkan dampak negatif peledakan yaitu ground vibration, airblast, dan flying rock. Tujuan dari penelitian ini untuk mengetahui parameter geometri peledakan yang paling berpengaruh,. Data primer yang diambil untuk penelitian yaitu burden, spaci, stemming, isian bahan peledak, kedalam lubang, jumlah lubang ledak, koordinat boundary area peledakan, titik koordinat flying rock, dan pola peledakan. Jarak lemparan flying rock aktual terjauh didapat berdasarkan hasil plotting boundary area peledakan dan titik flying rock dan diambil jarak lemparan terjauh, geometri peledakan yang paling berpengaruh terhadap jarak flying rock dapat diketahui dengan menggunakan regresi linier sederhana untuk mengetahui koefisien determinasi dan koefisien korelasi. Jarak flying rock terjauh berada dilokasi 20 sejauh 115,43 m dan jarak flying rock terdekat sebesar 22,47 m, nilai koefisien determinasi untuk setiap parameter geometri peledakan yaitu burden R2=0,4030, spaci R2=0,3766, stemming R2=0,4905, kedalam lubang R2=0,2075, isian bahan peledak R2=0,0023, dan powder factor R2=0,4386 sehingga parameter geometri yang paling berpengaruh yaitu stemming.

Kata Kunci: Flying Rock, Stemming, regresi linier, koefisien determinasi


Keywords


Flying Rock, Stemming, regresi linier, koefisien determinasi

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DOI: http://dx.doi.org/10.29313/pertambangan.v0i0.30895

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