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  • Küçük Resim
    Öğe
    Delme Hızı Ve Baskı Kuvvetinin Enerji Tüketimine Etkisinin Araştırılması
    (Selçuk Üniversitesi Mühendislik Fakültesi, 2019) Bi̇li̇m, Niyazi; Karakaya, Emre
    Artan sanayileşme ve madenciliğin gelişmesiyle beraber dünyada son yıllarda sondaj çalışmaları artmıştır. Madencilikte birçok amaçla kaya birimlerinde delikler delinmektedir. Kayaların farklı ekipmanlarla delinmesi esnasında makinelerin performansına birçok faktör etki etmektedir. Araştırmacılar daha verimli bir delme işlemi için, bu faktörler içeresinden, değiştirilebilir parametreler üzerinde çalışmalar sürdürmektedirler. Delinebilirlik analizlerinde delme hızı önemli bir göstergedir. Kaya madde ve kütlesinde verimli bir delmenin gerçekleştirilebilmesi için, delme hızının genelde yüksek olması arzu edilir. Fakat delme hızının artması için uygulanan prosedürler tüketilen enerjinin de artmasına neden olmaktadır. Bu nedenle, delme işleminde enerji tüketiminin daha önceden tahmin edilebilmesi maden projeleri için büyük önem arz etmektedir. Bu çalışmada, yedi farklı kaya biriminde 11 farklı baskı kuvvetinde ve dört farklı dönme hızında delme deneyleri gerçekleştirilmiştir. Delme deneyleri soncunda elde edilen verilerle güç tüketimlerinin değişimi araştırılmıştır. Ayrıca, delme hızıyla enerji tüketimi arasında ilişkiler değerlendirilerek bazı eşitlikler geliştirilmiştir.
  • Küçük Resim
    Öğe
    Kayaçların fiziksel ve mekanik özelliklerinden yararlanarak delinebilirlik tahmin modellerinin geliştirilmesi
    (Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 2018) Karakaya, Emre; Bilim, Niyazi
    With today's increasing population, the importance of underground and overland resources is increasing. Sounding studies are required to estimate the reserve and grade of these sources in the most accurate way. In addition to drilling operations for search and etudes, holes are drilled for many purposes in mining. Today, drilling works are carried out in mining and other engineering fields for underground water condition detection, rock bolts, blasting holes, control purposes, drainage, injection, basic works and so on. For this reason, it is of utmost importance that drilling works are carried out efficiently. In this thesis study, it is aimed to create a practical drillability index model by taking advantage of the physical and mechanical properties of rocks. For this purpose, drilling experiments were carried out by changing parameters such as rotation speed, pressure force and hole diameter while taking a core with a laboratory scale core drilling machine from eight different natural rocks obtained from various regions. Experiments were carried out at eleven different pressing forces by changing the pressing force from the machine-dependent exchangeable parameters while these rock-drilling tests were carried out. In addition, a power analyzer also measured the power spent on 11 different press forces in rock penetration tests. Relations between parameters affecting punctuality were analyzed using numerical data obtained from power measurement. The effect of rotation speed on puncture was also investigated by varying the rotation speed of the drill bit. It was also determined how much wear the drill bit was measured on a sensitive scale after each rock drillability test. However, physio-mechanical tests (uniaxial compressive strength, Brazilian strength, Schmidt hardness, point loading strength, density, porosity, brittleness, Mohs hardness) were carried out in the same rock blocks. In order to develop a new drillability prediction model, the results of rock drillability experiment performed on rocks and the data obtained from rock mechanics experiments were analyzed. As a result of the analyzes made, it was found that the relations between the rock drillability experiments and the mechanical experiments are very meaningful and high. 11 different drilling speed data obtained at 11 different pressing forces and physio-mechanical test data were evaluated using the SPSS program. In this program, 11 different drilling speed values (obtained at 11 different pressing forces) were compared for these three mechanical test groups based on three different physio-mechanical properties, density-porosity, Schmidt-Brazilian and density-porosity-Schmidt. As a result, 33 equations were derived, with 11 different equations for each mechanical test group. It has been determined that the pressure of these equations does not significantly affect the sensitivity of equations unless the pressure force is applied to the rock excessively (on adverse conditions).