ÖZET

Bu yazıda, kömür karışımlarının hangi sağlamlıkta kok vereceğinin hesaplanmasını

olanaklı kılan ve en çok kullanılan 3 yöntem, kısaca özetlenmektedir:

— Kok parçalanma sağlamlığı M40‘ın hesaplanmasına yönelik, Simonis ve arkadaşlarının

yöntemi,

— Kok stabilitesinin hesaplanmasına yönelik, Schapiro ve Gray‘ın yöntemi,

— Optimal kömür karışımının saptanmasına yönelik Miyazu ve arkadaşlarının

yöntemi.

ABSTRACT

In this study, most frequently used three methods, to predict the degree of

coke stability of coal mixtures, are briefly summarized:

— The method of Simonis and et. al., for the determination of mechanical

strength M40 of coke,

— The method of Gray and Schapiro for the determination of stability of coke,

— The method of Miyazu and et. al., for the determination of optimum coal

mixture.

 ÖZET

ABSTRACT

This paper is concerned with the study of the tailings öf the mineraldressing plant of Eskişehir Kavak Chromite Mine as filling material in the underground openings.

The main problem in the production levels of  the mine, which employs  the "cut-and-fill" method, is the deficiency of mine safety and productivity. The incoherent rock fill is compressed with time and deteriorates the stability of the workings on the upper levels.

There are high pressures developing on the workings due to the heavy broken ore mass which constitutes the roof of the workings. This stituation gives rise to an instable roof under which the maintenance of wooden supports is difficult. Hence, due to the failure of the overhand method, the "undercut-and fill" method or, in other words, underhand cut-and-fill method is proposed. This method employs a type of consolidated fill-cemented fill-to prevent the convergence of the roof and walls and to provide a downward-moving stope with a safer roof.

Proper fill properties for the mine have been investigated in this research and it has been observed  that the most suitable fill material, under the conditions pre vailing at  Kavak  Mine would be, the mixture of cement, 16 per cent in weight and the tailings of the ore-dressing plant which would be placed into the openings by hydraulic means through  a system  of pipelines after being prepared by hydroc yclones at the  surface.

 ÖZET

Bu yazıda, bilgisayarlarla ilgili temel kavramlar açıklanmakta ve mikrobilgisayarlar

ağırlıkta olmak üzere madencilik sektöründeki bilgisayar kullanımı geçmişten

geleceğe belli bir perspektif içinde irdelenmektedir.

ABSTRACT

In this paper, basic concepts related with computers are explained and the

historical usage of computers in the mining industry and the future perspectives

are discussed with the special emphasis being on the microcomputers.

ÖZET

Filon şeklinde yataklarıma gösteren maden yataklarının haritalanması işletme sırasında pek çok pratik ve teknik yararlar sağlar. Harîtalama işlemi sırasında jeo lojik, mineralojik, metalojenik özellikler ve rezerv durumu göz önüne alınır. Filon haritaları uygun ölçekte hazırlanarak tenör-rezerv ilişkilerini gösteren istatistik ra kamlar, üzerine işlenir. Madenin parajenezi ve mineralleşme fazlarının, filon geo- metrisiyle  ilişkilerini  tenör-yön-eğim  diyagramları yardımıyla açıklamak olanaklı olmaktadır.

ABSTRACT

Mapping of deposits, exhibiting vein type bedding is of practical and technical value during production. Sn the process of mapping geological, mineralogical and metallogenical  properties and the condition of reserves are taken into considera tion.

The vein maps are prepared in a suitable scale and statistical numbers showing grade-reserve relationships are marked on them. It is possible to explain the rela tionship  between  the paragenesis and mineralization phases and vein geometry with the help of grade-direction-slope diagrams.