PATLATMA KAYNAKLI PARÇALANMA MODELLERİNİN BİR KUMTAŞI OCAĞINDA İNCELENMESİ

Year 2020, , 145 - 156, 01.09.2020

Türker Hüdaverdi Özge Akyıldız

https://doi.org/10.30797/madencilik.792386

Cited By: 3

Abstract

Parçalanma modelleri bir kumtaşı ocağında basamak patlatması operasyonları için incelenmiştir.
Patlatma kaynaklı parçalanmanın değerlendirilmesi amacıyla farklı bakış açıları ortaya konmuştur.
Her atım için boyut dağılım eğrileri çizilmiştir. KuzRam modelinin başarılı sonuçlar verdiği
görülmüştür. KCO modeli özellikle ince boyutlu malzemenin tahmininde başarılıdır. Modellerin
yetkinliği ince, orta ve iri boyutlu malzeme miktarının tahmini açısından detaylı bir şekilde
incelenmiştir. Chung ve Katsabanis modeli pratik olarak uygulanmış ve ocak için bir modifikasyon
önerilmiştir. Modellerin validasyonu için on farklı hata ölçütü kullanılmıştır. Simetrik hata ve ölçekli
hata ölçütlerinin parçalanmanın değerlendirilmesi amacıyla kullanılabilirliği incelenmiştir. KuzRam
modeli ortalama parça boyutunu üç santimetrenin altında bir hata ile tahmin edebilmektedir.
Modifiye edilmiş Chung ve Katsabanis modeli de başarılı sonuçlar vermiştir.

Keywords

Aggregate quarry, Rock blasting, Fragmentation, Size distribution, Error metrics,

INVESTIGATION OF BLAST FRAGMENTATION MODELS IN A SANDSTONE QUARRY

Abstract

The existing blast fragmentation models were investigated in a sandstone quarry for bench blasting
operations. It was tried to present different perspectives for evaluation of blast fragmentation.
Size distribution curves were created for each blast. KuzRam model provided successful results.
Kuznetsov-Cunningham-Ouchterlony (KCO) model was useful especially for the fine size
predictions. Capability of the models for fine, mean and coarse size predictions were evaluated in
detail. Uniformity coefficients proposed by the models were examined. Chung & Katsabanis model
was practically tested and a modification implemented for the studied quarry. Model validation was
performed using ten different error metrics. Applicability of symmetric errors and scaled errors was
investigated for evaluation of blast fragmentation. KuzRam model predicted mean fragment size
with an error lower than three centimeters. The results of the modified Chung & Katsabanis model
is quite promise.

Keywords

Aggregate quarry, Rock blasting, Fragmentation, Size distribution, Error metrics.

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