Mehmet Capik

• Karadeniz Technical University

This study presents the relationships between drill bit lifetime and mechanics, drillability and abrasive properties of rocks. Additively, worn-out of bit types were investigated. For that purpose, rock blocks were collected from tunnels. Regression analyses were employed to derive models for estimating the bit lifetime based upon drillability, and...

Aggregate is one of the most widely used construction material. The quality of the aggregate is determined using some testing methods. Among these methods, the Micro Deval Abrasion Loss (MDAL) test is commonly used for the determination of the quality and the abrasion resistance of aggregate. The main objective of this study is to develop models fo...

The Cerchar abrasivity index (CAI) is one of the most widely known index method for identification of rock abrasivity. It is a simple and fast testing method providing reliable information on rock abrasiveness. In this study, the relationships between the CAI and some rock properties such as uniaxial compressive strength (UCS), point load strength,...

ZET ili, merkez ilçesinde 0.000m 2 ik alandaki bina temel tiril tir. P bina ve e tahmini Elde edilen sonuçlar , ve Çevr yönetmeliklerine göre ABSTRACT This study is carried out at the foundation excavation of the building about 10 000m 2 It is investigated whether the blasted foundation building excavation would damage the nature and settlement are...

The drilling rate index (DRI) is an important parameter that influences the drillability of rocks. It can easily be used when estimating the economics of any excavation operation. Therefore, in the current study, an attempt was made to investigate the rock properties that govern the DRI. The relationships between the DRI and some physicomechanical...

Rock drilling is one of the main operation of mining. Drillability is the ratio of the drilling bit’s penetration rate into rock. Factors which are affecting drillability can be divided into two main groups of parameters; these parameters are controllable and uncontrollable parameters. Rock or formation’s properties can be given as an example to un...

Mechanized excavation seems to be the only alternative for drilling & blasting method. Investigation of suitability of rock excavation machine to the formation and rock cutting efficiency is main concern of rock cutting mechanization. Specific energy is the energy consumed per unit volume of excavated rock debris and is also the best indicator for...

For given geological conditions, cuttability or performance prediction can be expressed by specific cutting force (SFC), specific normal force (SFN), specific energy (SE), and pick wear rate. These parameters are difficult to determine. For this reason researchers try to assess these parameters indirectly by rock mechanical parameters. The Drilling...

Cutter forces have an indispensable place in mechanical excavation, especially selection of excavating machine. During mechanical excavation, three-dimensional forces occur on the cutter. These are cutting force or rolling force (FC and FR), normal force (FN) and sideway force (FS). Cutting force and normal force is very important variables such th...

In this study, 5 different rock samples (dolomitic limestone fossilized sandstone, lithic tuff, bioclastic limestone and vitric tuff) and 2 different ore samples (copper ore and lead ore) were subjected to small scale rock cutting test and Cerchar abrasivity test for determination of cuttability parameters which are namely; specific cutting force,...

Brittleness is one of the most crucial properties of rocks. Also brittleness has a critical point in excavation mechanics. If rocks are investigated from the cutting mechanics’ point of view, rocks are groupped in two types of cutting profiles. These are: brittle and ductile cutting profiles. Although there is no exact definition of brittleness, it...

Tool forces have an important role in selection of excavation machine. During rock excavation forces in three dimensions are being occurred. These forces are; cutting force, normal force and sideway forces. Tool forces are being measured by dynamometers in laboratory rock cutting tests (full scale rock cutting test and small scale rock cutting test...

In this study, use of Rock Quality Designation (RQD) and Volumetric Joint Count (Jv) parameters for prediction of block volume from Harşit Granitoid exposed in Dogankent (Giresun) area, was investigated. For this purpose, a quarry was chosen as the study area and properties of discontinuities were determined by performing scan-line surveys on the p...