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This study, which was performed to determine the material characteristics of coal and inner burdens (t=0.5 m) located in coal seam, was carried out in TKI-GLI-Omerler underground mine. Four test areas, which were each having an approximate area of 15 m2, were determined on the A1 panel which with a height of 3.5 m and a length of 110 m. The total area for coal face in A1 panel is 385 m2. These test regions were located on mid part and two edges of the tested longwall face. The experimental regions were divided into 238 measuring areas, cells, within themselves. In-situ Schmidt Hardness tests were then performed, at least three times at the mid-point of each cell, to find final test values for these cells, which were end up totally 238 test values. For the point load strength index test, the coal face of A1 panel was divided into 21 unit regions with approximately 5 meter intervals. Each of these regions divided into five sub-units. Then a total of 563 point load tests were performed by irregular samples selected from each subunit. After that, relations between the results of Schmidt Hardness and Point Load Strength tests were determined to evaluate their mechanical interrelations. In this study, additionally, new classification method was offered to evaluate excavation properties of coal seams.

BÜYÜK ÖLÇEKLİ KÖMÜR ARININDA GERÇEKLEŞTİRİLEN SCHMİDT SERTLİK İNDEKSİ VE NOKTA YÜKLEME DAYANIMI DENEY SONUÇLARININ DEĞERLENDİRİLMESİ